WO2016029821A1 - Method and device for creating virtual network instance - Google Patents

Method and device for creating virtual network instance Download PDF

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Publication number
WO2016029821A1
WO2016029821A1 PCT/CN2015/087670 CN2015087670W WO2016029821A1 WO 2016029821 A1 WO2016029821 A1 WO 2016029821A1 CN 2015087670 W CN2015087670 W CN 2015087670W WO 2016029821 A1 WO2016029821 A1 WO 2016029821A1
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Prior art keywords
virtual network
information
instance
network unit
path
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PCT/CN2015/087670
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French (fr)
Chinese (zh)
Inventor
李世涛
狄龙
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华为技术有限公司
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Publication of WO2016029821A1 publication Critical patent/WO2016029821A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks

Definitions

  • the present invention relates to the field of electronic information, and in particular to a method and device for creating a virtual network instance.
  • NFV Network Function Virtualization
  • the virtual network service architecture can be implemented on the physical hardware.
  • a VNF (Virtualized Network Function) unit in the NS is defined. And describes the connection relationship between the various VNF units.
  • the data can be transmitted in the virtual network through the defined VNF unit and the connection relationship between the various VNF units.
  • Embodiments of the present invention provide a method and an apparatus for creating a virtual network instance, which can solve the problem that when data has multiple paths to be selected between VNF units, it is impossible to determine which path to transmit from, thereby causing service interruption. problem.
  • a method for creating a virtual network instance is applied to a network management device, including:
  • the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used by And indicating the transmission path between the virtual network units, the connection information is used to indicate a connection relationship between the virtual network units, and the resource requirement information of each virtual network unit is used to indicate Describe the resources required for each virtual network unit to create an instance;
  • connection information Sending the connection information to the lower layer device, so that the lower layer device establishes a connection between the first virtual network unit, or establishes a connection between the first virtual network unit and another virtual network unit;
  • the sending the path information to the lower layer device specifically includes:
  • the resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit;
  • connection information includes at least one of a connection type and bandwidth information between the virtual network units.
  • the virtual network unit is determined to be a virtual network unit that needs to create an instance.
  • the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
  • the condition for selecting a transmission path includes selecting a transmission path according to a service type of the data.
  • a method for creating a virtual network instance is applied to an underlying device, including:
  • connection information sent by the network management device establishing a connection between the virtual network units that need to create an instance according to the connection information, or establishing between the virtual network unit that needs to create an instance and other virtual network units.
  • a connection wherein the connection information is used to indicate a connection relationship between virtual network units;
  • the path Information is used to indicate the transmission path of data between the virtual network elements.
  • the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
  • the second possible implementation further includes include:
  • Receiving data determining, according to the stored path information, a data transmission path as the first transmission path;
  • the conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
  • a network management device includes:
  • a network operation and maintenance module configured to acquire network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate data a transmission path between the virtual network units, the connection information is used to indicate a connection relationship between the virtual network units, and resource requirement information of each virtual network unit is used to indicate each of the The resources required by the virtual network unit to create an instance;
  • the network operation and maintenance module is further configured to determine, according to the network service description information, a virtual network unit that needs to create an instance, and use the virtual network unit that needs to create an instance as the first virtual network unit;
  • the lower layer basic device management module configured to receive the resource requirement information of the first virtual network unit and the connection information that are sent by the network operation and maintenance module, and obtain the The resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the first virtual network unit, and sends the connection information to the lower layer device, so that the lower layer device is in the first virtual network. Establishing a connection between the units or establishing a connection between the first virtual network unit and other virtual network units;
  • the underlying device management module is further configured to send the path information acquired by the network operation and maintenance module to the lower layer device, so that the lower layer device stores the path information.
  • the sending, by the underlying basic device management module, the path information to the lower layer device specifically includes:
  • the lower layer device management module is configured to send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information;
  • the underlying base device management module is configured to send the path information to each virtual network unit in the virtual network unit, so that each virtual network unit in the virtual network unit stores the path information.
  • the resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit;
  • connection information includes at least one of a connection type and bandwidth information between the virtual network units.
  • the network management device further includes a database module for storing state information
  • the network operation and maintenance module is further configured to query, in the status information that has been stored by the database module, whether each virtual network unit in the virtual network unit has created an instance, if the status information indicates the status If the virtual network unit corresponding to the information does not create an instance, the virtual network unit is determined to be a virtual network unit that needs to create an instance.
  • the path information also includes a policy of selecting a path, the policy including a condition for selecting a transmission path.
  • the conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
  • a lower layer device includes:
  • a receiving module configured to receive resource requirement information of a virtual network unit that needs to be created by the network management device, and transmit the resource requirement information to an instance creation module, where the resource requirement information is used to indicate that the virtual network is a virtual network The resources required for the unit to create an instance;
  • the instance creation module is configured to create an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the virtual network unit that needs to create an instance determines the virtual network unit determined by the network management device The virtual network unit in which the instance needs to be created;
  • the receiving module is further configured to receive connection information sent by the network management device, and transmit the connection information to the connection establishment module, where the connection information is used to indicate between the virtual network units Connection relationship
  • connection establishing module configured to establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units;
  • the receiving module is further configured to receive path information sent by the network management device, where the path information is used to indicate a transmission path of data between the virtual network units;
  • a storage module configured to store the path information.
  • the path information also includes a policy of selecting a path, the policy including a condition for selecting a transmission path.
  • the receiving module is further configured to receive data
  • the lower layer device further includes a path selection module and a forwarding module.
  • the path selection module is configured to determine, according to the stored path information, that the transmission path of the data is the first transmission path, and determine the data transmission according to the transmission path of the data determined by the path information. The identity of the next virtual network element lost;
  • the forwarding module is configured to transmit the data to the next virtual network unit according to the identifier of the next virtual network unit.
  • the conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
  • the method and device for creating a virtual network instance provided by the embodiment of the present invention, by acquiring the network service description information including the path information, determining the virtual network unit that needs to create an instance according to the network service description information including the path information, and creating an instance as needed
  • the resource requirement information of the virtual network unit creates an instance for the virtual network unit that needs to create an instance, establishes a connection between the virtual network elements that need to create an instance according to the connection information, or creates a virtual network unit and other virtual network units that need to create an instance.
  • Establish a connection store the path information contained in the network description information, and when the data is transmitted between the VNF units inside the network service, select the transmission path according to the path information, thereby solving the problem that when there are multiple transmission paths, Determine the service interruption caused by which transmission path is transmitted.
  • FIG. 1 is a schematic diagram of an application scenario of a method for creating a virtual network instance according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for creating a virtual network instance according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for creating a virtual network instance according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for creating another virtual network instance according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a data transmission path according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a VNF unit connection relationship according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another VNF unit connection relationship according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a network management device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a lower layer device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another network management device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another lower layer device according to an embodiment of the present invention.
  • An embodiment of the present invention provides an NFV (Network Function Virtualization) system.
  • the NFV system structure can be instantiated by using a network service (NS) as shown in FIG.
  • Network services refer to applications running on the network, such as web services, video services, and so on.
  • the NFV technology utilizes a common hardware device instead of a dedicated network management device to create an instance of the network service to virtualize the network service, so that the network service no longer depends on the dedicated hardware device.
  • OSS/BSS Operaation Support System/Business Support System
  • Network management equipment includes: NFVO (Network Functions Virtualization Orchestrator, Network virtualization operation and maintenance device), responsible for the allocation and management of resources, including allocating resources for network services during the instantiation of network services, adding resources to network services that have been instantiated, or reducing the processing and removal of resources. Resources occupied by network services.
  • NFVO Network Functions Virtualization Orchestrator, Network virtualization operation and maintenance device
  • the catalog is used for receiving and storing information such as NSD information included in the instantiation application proposed by the OSS/BSS of the operator network, information of the existing VNF instance, and the like.
  • VNFM VNF Manager, Management Module
  • VIM Virtualised Infrastructure Manager, the management module of the virtualized lower-layer device
  • NFVI Network Functions Virtualization Infrastructure
  • the lower layer device may be an NFVI, including computing resources, storage resources, network resources, and the like. Create an instance for the network service by applying for resources from the lower layer device.
  • An embodiment of the present invention provides a method for creating a virtual network instance.
  • the network management device applied to the NFV system shown in FIG. 1 is as shown in FIG. 2, and includes the following steps:
  • the Network Service Description is used to describe a Network Service (NS).
  • the network management device may obtain the NSD in the network service request sent by the network service user equipment, where the network service application is an application sent by the network management device when the network service user equipment needs to deploy and instantiate a certain network service.
  • a network service includes at least one VNF (Virtualized Network Function) unit, the network management device creates an instance for a VNF unit, and an instantiated VNF unit is called a VNF Instance.
  • the network service user equipment submits the network service request to the network management device for applying for instantiation of the VNF unit in the network service, and upgrading, changing, requesting to add resources to some VNF units that have been instantiated or cut back Resources and other operations.
  • the specific content of the instantiation application of the network service includes the NSD of the network service. Specifically, the NSD includes path information, connection information, and description information of each VNF unit in the VNF unit included in the network service.
  • the path information is used to indicate a transmission path of data between at least two VNF units.
  • the target VNF unit of the data transmission can be determined by querying the path information, and then the data is transmitted to the target VNF unit.
  • connection information is used to indicate a connection relationship between the at least two VNF units, including a connection type between at least two VNF units and bandwidth information.
  • connection type can be IPv4 or IPv6.
  • each VNF unit The description information of each VNF unit is called a VNFD (VNF Description), and each VNFD includes software and platform information that the corresponding VNF needs to run, and resource requirement information of the VNF.
  • the resource requirement information is used to indicate resources required for creating an instance for the VNF unit, including computing resources, storage resources, and the like.
  • the network management device determines which VNF unit needs to create an instance according to each VNFD, and uses the VNF unit that needs to create an instance as the first VNF unit.
  • the VNF unit that has created the instance is queried in the database. If the VNF1 exists and the idle resource of the VNF1 satisfies the description of the VNFD, the network management device may allocate the VNF1 to the VNF1. Network services without the need to instantiate the VNF unit described by the VNFD. If VNF1 does not exist in an existing VNF instance, the VNF unit described by the VNFD needs to be instantiated.
  • the network service includes at least one VNF unit, and the first VNF unit may have one first VNF unit or multiple first VNF units.
  • the network management device sends the resource requirement information of the first VNF unit to the lower layer device, and requests the next The layer device allocates resources for the first VNF unit and creates an instance for the first VNF unit.
  • the network management device instantiates each of the first VNF units.
  • the resource requirement information may be included in the instantiation creation request and sent to the lower layer device.
  • connection information Send the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network units that need to create an instance, or establishes a connection between the virtual network unit that needs to create an instance and other virtual network units.
  • the first VNF unit needs to establish a connection with other VNF units within the network service. Specifically, the lower layer device establishes a connection between the virtual network units that need to create an instance according to the connection relationship described by the connection information, or establishes a connection between the virtual network unit that needs to create an instance and other virtual network units.
  • the network management device allocates one or more existing VNF instances to the network service when allocating resources for the network service, between the existing VNF instances assigned to the network service. If a connection that satisfies the connection information has been established, the network service can directly use the existing connection without establishing a new connection. If the existing VNF instances assigned to the network service have not established a connection that satisfies the connection information, then the connection is established for the existing VNF instances assigned to the network service according to the connection relationship.
  • the network unit stores path information.
  • the network device may be a router or an SDN (Software Defined Network) controller.
  • the network management device After acquiring the NSD, the network management device sends the path information to the network device of the lower layer device, and the network device of the lower layer device stores the path information, or sends the path information to each virtual network unit in the virtual network unit, where the virtual network unit is used.
  • Each virtual network unit stores path information.
  • the method for creating a virtual network instance provided by the embodiment of the present invention, by obtaining the network service description information including the path information, determining the virtual network unit that needs to create an instance according to the network service description information including the path information, and the virtual instance of the instance needs to be created.
  • the resource requirement information of the network unit is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network units that need to create an instance.
  • Each virtual network unit in the network unit facilitates storage of path information for each virtual network unit in the virtual network unit.
  • the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
  • An embodiment of the present invention provides another method for creating a virtual network instance.
  • the method is applied to the lower layer device in the system shown in FIG. 1 .
  • the lower layer device is an NFVI. As shown, the following steps are included:
  • the resource requirement information is used to indicate resources required to create an instance for a virtual network unit.
  • the virtual network unit that needs to create an instance for the network management device determines the virtual network unit that needs to create an instance in the virtual network unit.
  • the resource allocation request includes resource requirement information of a virtual network unit that needs to create an instance, and the resource requirement information is used to indicate resources required to create an instance for one virtual network unit.
  • the underlying device includes the resources required to create a virtual network instance, including computing resources and storage resources. Source, etc.
  • the lower layer device allocates resources for the virtual network unit that needs to create an instance according to the resource requirement information of the virtual network unit that needs to be created in the received resource allocation request, and instantiates the virtual network unit that needs to create the instance.
  • connection information sent by the network management device establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units.
  • connection information is used to indicate a connection relationship between one of the virtual network elements, and the connection information is included in the NSD.
  • the lower layer device receives the request for establishing a connection sent by the network management device, and according to the connection information included in the request, between the virtual network units that need to create an instance. Establish a connection or establish a connection between a virtual network unit that needs to create an instance and other virtual network elements.
  • the path information is used to indicate a transmission path of data between VNF units included in the network service when the network service processes the service.
  • the path information is stored, the path information is queried during the data transmission process, and the data is transmitted according to the transmission path indicated by the path information.
  • the method for creating a virtual network instance creates an instance for the virtual network unit that needs to create an instance according to the resource requirement information, receives the connection information sent by the network management device, and creates a virtual network unit of the instance according to the connection information.
  • Establish a connection, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units receive path information sent by the network management device, store the path information in the network device, or store the path information in the virtual network.
  • the transmission path is selected according to the path information, which solves when there are multiple transmission paths. Because the service interruption problem caused by which transmission path is transmitted cannot be determined.
  • An embodiment of the present invention provides a method for creating a virtual network instance.
  • the application is the NFV system shown in FIG. 1 above.
  • the embodiment uses NFVO, Catalog, VNFM, VIM in the NFV system, and
  • the NFVI is used as an example to describe the method for creating a virtual network instance.
  • the embodiment is merely illustrative, and the present invention is not limited thereto. Referring to FIG. 4, the following steps are included:
  • the NFVO obtains network service description information.
  • the network service includes at least one virtual network unit, and the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit.
  • the path information is used to indicate a transmission path between the virtual network units
  • the connection information is used to indicate a connection relationship between the virtual network units
  • the resource requirement information of each virtual network unit is used to indicate each virtual network respectively.
  • the NFVO receives an On-boarding request for the network service sent by the OSS/BSS.
  • the registration request includes specific description information NSD of the network service that needs to be instantiated and the identity of the NSD.
  • a network service includes at least one VNF unit, and the NSF includes a VNFD of each of the at least one VNF unit.
  • the first network service is taken as an example to describe path information.
  • the first network service is used to provide HTTP web browsing, video, and communication services in the mobile communication.
  • the specific functions and structures of the first network service may not be exactly the same as the actual situation, and are merely used for illustration.
  • the first network service includes a plurality of VNF units, which are LB (Load Balancing), Web Proxy (Web Proxy), FW (Firewall, Firewall), and Router ACL (Router Access Control List). Video Optimizer, Network Address Translation (NAT).
  • LB Local Balancing
  • Web Proxy Web Proxy
  • FW Firewall, Firewall
  • Router ACL Router ACL
  • Video Optimizer, Network Address Translation (NAT) There are three transmission paths between the VNF units in the first network service.
  • the data transmission path is: LB—Web Proxy—FW—NAT.
  • the data transmission path is: Video Optimizer-FW.
  • the data transmission path is: Router ACL.
  • the transmission path includes only one VNF unit. After the data enters the first network service, only one VNF unit is passed, that is, the Router ACL. And then it is sent out of the first network service.
  • Each data transmission path corresponds to a policy of the data transmission path, including a condition for selecting the data transmission path.
  • the data transmission path of the HTTP webpage browsing service if the data received from the outside of the first network service satisfies the policy of the HTTP webpage browsing service data transmission path, the data is transmitted to the LB, in order, respectively. After Web Proxy, FW, and NAT, data is output from the first network service.
  • this embodiment provides five forms of NSD.
  • NSD In the first form of NSD described in XML (Extensible Markup Language), it includes three parts: ⁇ Types>, ServiceTemplate (Service Template), and ⁇ ServiceChaining>.
  • ⁇ Types> includes the following:
  • the node type (NodeType) and the relationship type (RelationshipType) are defined in ⁇ Types>.
  • the node type is used for the type attribute of the VNF unit.
  • the relationship type is used to define the relationship attribute between two VNF units, including the connection relationship between the two VNF units, the connection type, and the bandwidth information.
  • the ServiceTemplate includes the VNFD of each VNF unit in the first network service, the connection relationship between each adjacent two VNF units, and the data forwarding relationship.
  • a VNFD is a node template. Specifically, a VNF unit LB included in the first network service is used as an example. The VNFD of the LB is:
  • the Properties are used to define the parameters of the VNF unit, including the software and image information of the VNF unit, and the resource requirement information.
  • the resource requirement information includes the processing speed information of the VNF unit and the storage space information of the VNF unit.
  • the processing speed information may include a clock frequency of a central processing unit (CPU), a number of cores, and the like.
  • relationshipTemplate The relationship between the two adjacent VNF units and the data forwarding relationship is described by a relationship template (RelationshipTemplate).
  • RelationshipTemplate The relationship between the LB and the Web Proxy is described as an example. The details are as follows:
  • the specific name of the present invention is not limited to the specific name of the relationship type describing the data transmission relationship.
  • the relationship type named FollowedBy is defined in ⁇ Types> and is used to describe the data transfer relationship between two adjacent nodes.
  • ⁇ ServiceChaining> includes path information. Each data transmission path is described by a ServiceChainingTemplate.
  • the ServiceChainingTemplate describes the forwarding relationship of data in a data transmission path and the policy of the data transmission path, that is, the condition for selecting the transmission path. Take the ServiceChainingTemplate with the identifier FG1 as an example. The details are as follows:
  • the data transmission path described by the ServiceChainingTemplate identified as FG1 includes three connections: Link1, Link2, and Link3.
  • Link1, Link2, and Link3 are the identifiers of the three relationship templates in the service template, and the data transmission described by the three service templates.
  • the relationship is transmitted from LB To the Web Proxy, from the Web Proxy to the FW, from the FW to the NAT, the transmission path described by Link1, Link2, and Link3 is: LB—Web Proxy—FW—NAT, that is, the first network service processes an HTTP web page browsing.
  • the specific content of policyFG1 is defined in Type, which is a reference here.
  • this embodiment provides a definition of policyFG1, and the specific content is as follows:
  • the protocol type of the data is HTTP and the payload type is HTML
  • the data is HTTP web browsing service data
  • the data is transmitted through the transmission path described by FG1.
  • HTTP web browsing service data transmission path policy The specific definition of the HTTP web browsing service data transmission path policy is not limited.
  • the ServiceChainingTemplate identified as FG2 describes the data transmission path of the video service and the policy policyFG2 of the data transmission path
  • the ServiceChainingTemplate identified as FG3 describes the data transmission path of the FMC mobile private network access service and the The policy of the data transmission path policyFG3.
  • the same as policyFG1, the specific contents of policyFG2 and policyFG3 are also defined in ⁇ Types>, which is a reference here.
  • this embodiment provides a definition of policyFG2, and the specific content is as follows:
  • the data is video service data, then the data is transmitted through the transmission path described by FG2.
  • the video service data transmission path policy does not limit the specific definition of the video service data transmission path policy.
  • this embodiment provides a definition of a policyFG3, where the FMC dedicated access network segment is 10.138.*.*, and the specific content is as follows:
  • the data is the FMC mobile private network access service data, and then the data is transmitted through the transmission path described by FG3.
  • FG3 the transmission path described by FG3.
  • a transmission path may include one or more connections of the relationship type FollowedBy, and the connections form a complete transmission path and a data transmission path, and one transmission path may also include only one VNF unit, which represents that the data only enters the network service.
  • the network service is sent out through a VNF unit.
  • the data transmission path of the FMC mobile private network access service is taken as an example, and the description information of the path is as follows:
  • the data transmission path of the FMC mobile private network access service which is identified as FG3, includes only one VNF of the Router ACL.
  • the description of the data transmission path in the path information includes only the Router ACL and no data forwarding relationship. The description indicates that the data enters the first network service and passes through only one VNF unit, that is, the Router ACL, and then is sent out of the first network service.
  • an embodiment of the present invention provides a second form of NSD described by XML, including ⁇ Types> and ServiceTemplate.
  • the second form of NSD adds a new node type named ServiceChainingType in ⁇ Types>.
  • ServiceTemplate a node description of the service type is ServiceChainingType and the name is ServiceChaining.
  • a path information of the network service the path information is included in an element named ⁇ ForwardingPathProperties>, the path information includes a description of three data transmission paths in the first network service, and a policy of each data transmission path.
  • a Path element describes a data transmission path, including the data forwarding relationship and policy of the data transmission path. Take a Path element identified as FP1 as an example. The details are as follows:
  • the transmission path described by the Path element identified as FP1 includes the links identifying Link1, Link2, and Link3, respectively.
  • Link1 is used as an example.
  • the data transmission relationship represented by the data is transmitted from the LB to the FW.
  • the data transmission relationship described by the connection identified as Link2 is transmitted from the Web Proxy to the FW
  • the data transmission relationship described by the connection identified as Link3 is from the FW to the NAT.
  • the transmission path described by the Path element identified as FP1 is the HTTP web browsing service data transmission path: LB—Web Proxy—FW—NAT, and the policy of the path is policyFG1.
  • the VNFD of each VNF unit is the same as that of the first form of NSD, and will not be described here.
  • the embodiment of the present invention provides a third form of NSD described by XML, and describes a data transmission relationship between two adjacent VNF units by a relationship type named FollowedBy, and the specific type of the relationship name is followedBy.
  • the definition is the same as in the first form of NSD.
  • a complete data transmission path is described by a Path element in the node template by the node type named ServiceChainingType. Take the HTTP web browsing service data transmission path as an example.
  • the description information of the data transmission path is as follows:
  • connection with the links of Link1, Link2, and Link3 is a relationship type of followedBy, which describes the data transmission relationship from LB transmission to Web Proxy, from Web Proxy to FW, and from FW to NAT.
  • the path described by the path labeled FP1 is LB—Web Proxy—FW—NAT, and the policy is policyFG1.
  • the definition of each VNFD and the adjacent VNF transmission relationship is the same as that in the first form of NSD, and details are not described herein again.
  • each ServiceChainingTemplate respectively describes a complete data transmission path, including a data forwarding relationship between adjacent VNF units. And the strategy of the data transmission path. Take the HTTP web browsing service data transmission path as an example.
  • the description information of the data transmission path is as follows:
  • the difference from the description of the path information by the ⁇ ServiceChaining> element in the NSD of the first form is that the data transmission relationship between two adjacent VNF units is not defined by the relationship template, but is defined in the ServiceChainingTemplate.
  • the data transmission relationship described by the connection identified as Link2 is transmitted from the Web Proxy to the FW
  • the data transmission relationship described by the connection identified as Link3 is from the FW to the NAT.
  • the data transmission path described by the Path element identified as FP1 It is: LB—Web Proxy—FW—NAT.
  • the policy of the data transmission path is policyFG1.
  • the path information includes only one link and the link only includes the “source” parameter.
  • the data transmission path of the FMC mobile private network access service is taken as an example, and the description information of the data transmission path is specific. as follows:
  • the first network service is described by a YAML data description language.
  • the path information is described in the node template by the node type named tosca.nodes.ServiceChaining.
  • each Path includes a description of a transmission path and a policy of the transmission path.
  • the data transmission relationship between two VNF units is defined by Link.
  • the "source" parameter in the Link indicates the VNF unit that transmits the data
  • the "target” parameter in the Link indicates the VNF unit that receives the data.
  • the Path includes only one link, and only the “source” parameter is included in the link.
  • a transmission path may include a link or by multiple A combination of links. Take the HTTP web browsing service data transmission path as an example.
  • the description information of the data transmission path is as follows:
  • NSD The five forms of NSD provided in this embodiment describe the data transmission relationship between two adjacent VNF units, and further describe the complete transmission path by the data transmission relationship between two adjacent VNF units.
  • the NFVO After receiving the network service registration request sent by the OSS/BSS, the NFVO sends the NSD to the database for storage.
  • the database is specifically a catalog.
  • the NFVO sends a registration request confirmation message to the OSS/BSS to confirm that the NSD is successfully saved.
  • the OSS/BSS sends a request for instantiating a network service to the NFVO, where the request includes an identifier of the NSD.
  • the NFVO sends a query request including an NSD identifier to the database according to the identifier of the NSD, where the query request is used to query the database, and which VNF units included in the network service need to be created. Build instances and which do not need to create instances.
  • the database records the status information of the VNF unit that has created the instance.
  • the database queries the status information according to the NSD, and determines whether each VNF unit included in the network service has created an instance according to the status information, if a VNF included in the network service If the cell does not create an instance, the VNF unit is used as a virtual network element that needs to create an instance.
  • the database finds the NSD that has been stored according to the NSD identifier, and confirms each VNFD included in the NSD according to the status information. For VNFD1 included in NSD, if VNF1 exists in the existing VNF instance, and the idle resource of VNF1 satisfies the resource requirement in the description of VNFD1, VNF1 can be allocated to the network service without re-instantiating the VNF unit described by VNFD1. . If it is determined according to the state information that VNF1 does not exist in the existing VNF instance, it is necessary to instantiate the VNF unit described by the VNFD.
  • the network service includes at least one VNF unit, where there may be one first VNF unit or multiple first VNF units.
  • the network management device will use the virtual network unit that needs to create an instance as a virtual network unit that needs to create an instance.
  • the NFVO sends a request to the VNFM to instantiate the first VNF unit, where the request includes a VNFD indication of the first VNF unit.
  • the VNFM requests the VNFD of the first VNF unit from the database according to the VNFD indication of the first VNF unit.
  • the database returns the VNFD of the first VNF unit to the VNFM.
  • the VNFM sends a resource allocation request to the NFVO according to the resource requirement information included in the VNFD.
  • the NFVO sends the resource allocation request to the VIM, requesting to create an instance for the first VNF unit.
  • the VIM requests the NFVI for the required resource according to the resource allocation request, and for the VNF.
  • the unit creates the required image.
  • the NFVI sends a resource allocation confirmation message to the VIM, indicating that the resource allocation is successful.
  • the resource allocation confirmation message includes address information of resources allocated for the first VNF unit.
  • the VIM sends the resource allocation confirmation message to the NFVO.
  • the NFVO sends the resource allocation confirmation message to the VNFM.
  • the VNFM creates an instance for the first VNF unit according to the address information of the resource allocated for the first VNF unit.
  • the VNFM sends a first VNF unit instance creation confirmation message to the NFVO, indicating that the first VNF unit instance is successfully created.
  • the NFVO may send a request for instantiating the first VNF unit to different VNFMs respectively, and different VNFMs respectively create instances for the plurality of first VNF units.
  • the lower layer device receives the resource requirement information of the virtual network unit that needs to be created by the network management device, and creates an instance for the virtual network unit that needs to create an instance according to the resource requirement information.
  • the NFVO sends a request for establishing a connection to the VIM, requesting to establish a connection between the VNF units included in the network service according to the description of the NSD.
  • the request includes connection information obtained from the NSD, and the connection information is used to indicate a connection relationship between VNF units included in the network service.
  • the connection information includes the connection type and the required bandwidth.
  • the connection type may be IPv4 (Internet Protocol Version 4, Internet Protocol Version 4) or IPv6 (Internet Protocol Version 6, Internet Protocol Version 6).
  • the VIM sends a request for establishing a connection received from the NFVO to the NFVI, requesting to establish a connection between the VNF units included in the network service according to the NSD.
  • the NFVI establishes a connection for the first VNF unit according to the request for establishing a connection received from the VIM. Pick up.
  • the result returned by the database to the NFVO indicates that the existing VNF instance has VNF1.
  • the surplus resources of VNF1 satisfy the description of VNFD1, and the network management device allocates the VNF1 instance to the network service.
  • the network management device can allocate multiple existing VNF instances to the network service. These are allocated to existing VNF instances of the network service. If a connection that satisfies the connection information has been established, the existing connection can be directly used without establishing. New connection. If the existing VNF instances assigned to the network service have not established a connection that satisfies the connection information, the connection is established for the existing VNF instances according to the connection relationship.
  • the lower layer device receives the connection information sent by the network management device, establishes a connection between the virtual network units that need to create an instance according to the connection information, or establishes between the virtual network unit that needs to create an instance and other virtual network units. connection.
  • the NFVI then returns to the VIM a message that the connection was successfully established.
  • the VIM returns a message confirming that the connection establishment is completed to the NFVO.
  • the lower layer device receives the path information sent by the network management device, and stores the path information in the network device, or stores the path information in a storage space of each virtual network unit in the virtual network unit.
  • the network device of the lower layer device may be a router or an SDN controller.
  • the path information in the NSD is used to indicate the transmission path of the data between the VNF units included in the network service when the network service processes the service.
  • the path information is stored, and in the data transmission process, the path information is queried, and the data transmission is performed according to the transmission path indicated by the path information.
  • this embodiment provides two ways of storing path information.
  • the path information is stored in the network device of the NFVI, and when the data is transmitted between the VNF units inside the network service, the network device of the NFVI selects the transmission path according to the policy of the transmission path. .
  • the path information storage process is specifically: after the first VNF unit instance is successfully created, or after the existing VNF instance is allocated for the network service, the VNFM will VNF The instance ID of the instance is sent to the NFVO. The instance identifier is used to indicate that data is transmitted to a VNF instance during data transmission.
  • the NFVO replaces each VNFD identifier in the path information with the instance identifier of the VNF instance corresponding to the VNFD, and sends the path information to the network device of the NFVI via the VIM, and the network device of the NFVI stores the path information.
  • the information interaction process between the VNFM, the NFVO, the VIM, and the NFVI and the information interaction process in the process of establishing a connection with the VNF unit serving the network service can be completed simultaneously with the process of establishing a connection to the VNF unit of the network service.
  • the path information included in the NSD is stored in the storage space of each VNF unit, and when the data is transmitted between the VNF units inside the network service, the VNF instance is based on the transmission path.
  • the strategy chooses which VNF unit to transfer the data to.
  • the path information storage process is specifically: after the connection between the VNF units included in the network service is established, the NFVO replaces each VNFD identifier in the path information with the instance identifier of the VNF instance corresponding to the VNFD, and for each The VNF unit separates the path information related to the VNF unit from the path information, and then sends the VNFM to the corresponding VNF instance storage.
  • the first network service includes three transmission paths, which are:
  • the policy is the HTTP web browsing service data transmission path of policyFG1: LB—Web Proxy—FW—NAT;
  • the video service data transmission path of policyFG2 is: Video Optimizer-FW;
  • the data transmission path of the FMC mobile private network access service of the policyFG3 is the Router ACL.
  • the separated path information is: LB sends the data that meets the policy policyFG1 to the Web Proxy;
  • the separated path information is: the Web Proxy sends the data satisfying the policy policyFG1 to the FW;
  • the data of the HTTP web browsing service and the data of the video service are judged according to the policy of the HTTP webpage browsing service transmission path and the video service transmission path after the data received by the FW and the FW, and the corresponding result is selected according to the judgment result.
  • Data transfer path In combination with the definition of the policy for the HTTP web browsing service transmission path in step 401:
  • the FW sends the protocol type HTTP, and the payload type is HTML data to the NAT.
  • step 401 In combination with the definition of the policy for the video service transmission path in step 401:
  • the FW sends the first network service to the data of the type of the payload of 31, 32, 33 or 34.
  • the VNFM After the path information separated for each VNF unit is stored in the corresponding VNF unit, the VNFM sends an indication message that the path information is successfully saved to the NFVO.
  • the NFVO After the connection between the VNF units included in the network service is established, and the path information is stored, the NFVO returns a message that the network instance is completed to the OSS/BSS.
  • an embodiment of the present invention provides a data transmission method. Referring to FIG. 6 in combination with the two methods for storing path information in step 423, the following steps are included:
  • the lower layer device receives the data data, and determines the data transmission path according to the stored path information. Is the first transmission path.
  • the policy of a transmission path in the path information is the condition for selecting the transmission path. After the network service is instantiated, after the lower layer device receives the data, the data is parsed, and the parsed data is judged according to the policy in the stored path information. If the parsed data satisfies a certain transmission path policy, Then the transmission path is the first transmission path.
  • the path information is stored in the network device of the NFVI, and the network device of the NFVI parses the data and selects a data transmission path according to the stored path information.
  • the path information is stored in a storage space of each VNF unit included in the network service.
  • the VNF instance parses the data and selects a data transmission path according to the stored path information.
  • the policy of the data transmission path selects different transmission paths according to different service types.
  • the first network service is used as an example. After receiving the data, the first network service parses the data to determine the service type of the data. If the parsed data satisfies policyFG1, the data is HTTP web browsing service data. Then the first transmission path is: LB—Web Proxy—FW—NAT. If the parsed data satisfies policyFG2, that is, the data is video service data, the first transmission path is: Video Optimizer-FW. If the parsed data meets the policy FG3, that is, the data is the FMC mobile private network access service data, the first transmission path is: Router ACL. In this embodiment, the video service data transmission path is used as the first transmission path, and the process of data transmission between the VNF units of the first network service is described.
  • the lower layer device determines, according to the path information, an identifier of a next virtual network unit of the data transmission, and transmits the data to the next virtual network unit according to the identifier of the next virtual network unit.
  • the lower layer device determines the next VNF unit of the data transmission according to the transmission relationship between the data in the first transmission path between the different VNF units, and further determines its identity.
  • the identifier of the VNF unit may be an instance identifier (Instance ID) of the VNF unit, and the instance identifier is obtained in the stored path information.
  • the connection relationship described by the NSD of the first network service is as shown in FIG. 7, where LB, Web Proxy, FW, RouterACL, VideoOptimizer, and NAT are all connected to the NFVI network device.
  • the data is transmitted to the network device of the NFVI through the GW (Gate Way), and the network device of the NFVI determines according to the policy of the transmission path, and determines that the next VNF unit of the data transmission is Video Optimizer.
  • the data is transferred to the Video Optimizer according to the instance identifier of the Video Optimizer.
  • the Video Optimizer transmits the processed data back to the network device of the NFVI.
  • the network device of the NFVI judges again according to the policy of the transmission path, determines that the next VNF unit of the data transmission is FW, and transmits the data to the FW according to the instance identifier of the FW.
  • the FW transmits the processed data back to the network device of the NFVI.
  • the network device of the NFVI transmits the data to the GW according to the policy of the transmission path, and the data is output from the first network service. At this point, after the data is input to the first network service, it is output from the first network service through the first transmission path.
  • the connection relationship described by the NSD of the first network service is as shown in FIG. 8.
  • the LB, Web Proxy, FW, RouterACL, VideoOptimizer, and NAT are all connected to the NFVI network device. Since the path information is stored in the storage space of each VNF unit, the NFVI network device simply transmits the data to the next VNF unit according to the instance identifier of the next VNF unit included in the received data.
  • the instance identifier of the VNF unit that receives the data is not included in the data, and the network device of the NFVI cannot forward the NFVI, so the NSD of the first network service further includes the VNFD of the entry VNF unit.
  • the ingress VNF unit is connected to the network device of the NFVI for forwarding the data received from outside the network service for the first time.
  • the data sent from the outside of the first network service to the first network service is first sent to the ingress VNF unit, and the ingress VNF unit makes a judgment based on the stored path information to determine the next one of the data transmission.
  • VNF unit The path information saved by the ingress VNF unit is path information separated for the ingress VNF unit. Specifically, if the parsed data satisfies policyFG1, the next VNF unit of the data transmission is LB. If the parsed data satisfies policyFG2, the next VNF unit of the data transfer is Video Optimizer. If the parsed data meets policyFG3, the next VNF unit of the data transmission is the Router ACL.
  • the identifier of the next VNF unit is added to the data, and the data is transmitted to the next VNF unit through the NFVI switch.
  • each VNF unit in the first network service determines the received data according to the path policy, determines the next VNF unit of the data transmission, and adds the identifier of the next VNF unit to the data, and the data is transmitted through the NFVI switch. Transfer to the next VNF unit.
  • the identifier of the VNF unit is an instance identifier of the VNF unit.
  • the ingress VNF unit determines that the next VNF unit of the data transmission is a Video Optimizer, and the ingress VNF unit adds an instance identifier of the Video Optimizer to the data, and transmits the data to the Video Optimizer through the NFVI switch.
  • the Video Optimizer judges according to the policy of the transmission path, determines that the next VNF unit of the data transmission is FW, and the Video Optimizer adds the instance identifier of the FW to the data, and transmits the data to the FW through the NFVI switch.
  • the FW transmits the data to the ingress VNF unit, and the ingress VNF unit sends the data out of the first network service. At this point, after the data is input to the first network service, the data is output from the first network service through the first transmission path.
  • a method for creating a virtual network instance adds path information in an NSD, where the path information describes a data transmission relationship between each two adjacent VNF units in the network service, and the data is in the network service center.
  • the transmission path between the VNF units is included, and the creation process of the virtual network instance is completed according to the NSD including the path information, and the path information is stored.
  • the data transmission path is selected according to the path information, thereby solving the problem that when there are multiple paths between the VNF units, the data cannot be determined. From which path to transfer, resulting in business interruption problems.
  • An embodiment of the present invention provides a network management device.
  • the network management device is applied to In the NFV system shown in Fig. 1, the functions of NFVO, Catalog, VNFM, and VIM are completed.
  • the network management device 901 includes a network operation and maintenance module 9011 and a lower layer infrastructure management module 9012.
  • the network operation and maintenance module 9011 is configured to acquire network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate that the data is in the virtual network.
  • the transmission path between the units, the connection information is used to indicate the connection relationship between the virtual network units, and the resource requirement information of each virtual network unit is used to respectively indicate resources required for creating an instance for each virtual network unit.
  • the network operation and maintenance module 9011 is further configured to determine, according to the network service description information, a virtual network unit that needs to create an instance, and use a virtual network unit that needs to create an instance as the first virtual network unit.
  • the underlying device management module 9012 is configured to receive the resource requirement information and the connection information of the first virtual network unit that is transmitted by the network operation and maintenance module, and send the resource requirement information acquired by the network operation and maintenance module to the lower layer device, so that the lower layer device is
  • the first virtual network unit creates an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the first virtual network unit or establishes a connection between the first virtual network unit and the other virtual network unit.
  • the underlying device management module 9012 is further configured to send the path information acquired by the network operation and maintenance module 9011 to the lower layer device, so that the lower layer device stores the path information.
  • the underlying basic device management module 9012 is further configured to send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information;
  • the lower base device management module 9012 is configured to send path information to each virtual network unit in the virtual network unit, so that each virtual network unit in the virtual network unit stores path information.
  • the resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit.
  • connection information includes at least one of a connection type between the virtual network units and bandwidth information.
  • the network management device 901 further includes a database module 9013 for storing state information.
  • the network operation and maintenance module 9011 is further configured to query, in the state information that the database module 9013 has stored, whether each virtual network unit in the virtual network unit has created an instance, and if the state information indicates that the virtual network unit corresponding to the state information does not create an instance,
  • the virtual network unit is used as a virtual network unit that needs to create an instance.
  • the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
  • condition for selecting the transmission path includes selecting a transmission path according to the service type of the data.
  • the network management device determines the virtual network unit that needs to create an instance according to the network service description information that includes the path information, and obtains the virtual network unit that needs to create an instance.
  • the resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network unit that needs to create an instance, or
  • a virtual network unit that needs to create an instance establishes a connection with other virtual network units, and sends the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to the virtual network unit.
  • Each virtual network unit facilitates storage of path information for each virtual network unit in the virtual network unit.
  • the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
  • Embodiments of the present invention provide a lower layer device.
  • the lower layer device is applied to the NFV system shown in FIG. 1 to perform the function of the NFVI.
  • the network management device 1001 includes a receiving module 1011, an instance creating module 1012, a connection establishing module 1013, and a storage module 1014.
  • the receiving module 1011 is configured to receive the resource requirement information of the virtual network unit that needs to be created by the network management device 1011, and transmit the resource requirement information to the instance creating module 1012, where Resource requirement information is used to indicate the resources needed to create an instance for a virtual network element.
  • the instance creation module 1012 is configured to create an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the virtual network unit that needs to create the instance is a virtual network unit determined by the network management device 1011 and needs to create an instance in the virtual network unit. .
  • the receiving module 1011 is further configured to receive the connection information sent by the network management device 1011, and transmit the connection information to the connection establishing module 1013, where the connection information is used to indicate a connection relationship between the virtual network units.
  • the connection establishing module 1013 is configured to establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units.
  • the receiving module 1011 is further configured to receive path information sent by the network management device 1011, where the path information is used to indicate a transmission path of the data between the virtual network units.
  • the storage module 1014 is configured to store path information.
  • the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
  • the receiving module 1011 is further configured to receive data data.
  • the lower layer device further includes a path selection module 1015 and a forwarding module 1016,
  • the path selection module 1015 is configured to determine that the data transmission path is the first transmission path, and determine the identifier of the next virtual network unit of the data transmission according to the stored path information.
  • the forwarding module 1016 is configured to transmit data to the next virtual network unit according to the identifier of the next virtual network unit.
  • the forwarding module 1016 is further configured to add an identifier of the next virtual network unit to the data.
  • the storage module 1014 is specifically configured to store path information in a storage space of each virtual network unit in the virtual network unit.
  • condition for selecting the transmission path includes selecting a transmission path according to the service type of the data.
  • the lower layer device establishes an instance between virtual network units that need to create an instance according to connection information by creating an instance for a virtual network unit that needs to create an instance, or a virtual network unit and other virtual ones that need to create an instance.
  • the network unit establishes a connection, receives path information sent by the network management device, and stores the path information in the network device, or stores the path information in a storage space of each virtual network unit in the virtual network unit.
  • the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
  • An embodiment of the present invention provides another network management device 1101.
  • the device may be embedded or itself a micro-processing computer, such as a general-purpose computer, a customized computer, a mobile terminal, or a portable device such as a tablet.
  • a terminal device such as a network terminal, a storage device terminal, and the like, the network management device 1101 includes: at least one processor 1111, a memory 1112, a bus 1113, a transmitter 1114, and a receiver 1115, the at least one processor 1111, the memory 1112, and the transmitter 1114.
  • the receiver 1115 is connected through the bus 1113 and completes communication with each other.
  • the bus 1113 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, a PCIe bus, or an EISA (Extended Industry Standard Architecture) bus.
  • the bus 1113 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 11, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 1112 is for executing application code of the inventive scheme, and the application code for executing the inventive scheme is stored in a memory and controlled by the processor 1111 for execution.
  • the memory can be a read only memory ROM or other type of static storage device that can store static information and instructions, a random access memory RAM or other type of dynamic storage device that can store information and instructions, or can be electrically erasable or programmable.
  • These memories are connected to the processor via a bus.
  • the processor 1111 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. Integrated circuits.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the processor 1111 is configured to invoke the program code in the memory 1112 to perform the operations of the network operation and maintenance module, the lower layer basic device management module, and the database module in the device embodiment corresponding to FIG. 9 above. For example, it will not be described here.
  • the network management device determines the virtual network unit that needs to create an instance according to the network service description information that includes the path information, and obtains the virtual network unit that needs to create an instance.
  • the resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network unit that needs to create an instance, or
  • a virtual network unit that needs to create an instance establishes a connection with other virtual network units, and sends the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to the virtual network unit.
  • Each virtual network unit facilitates storage of path information for each virtual network unit in the virtual network unit.
  • the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
  • An embodiment of the present invention provides another lower layer device 1201.
  • the device may be embedded or itself a microprocessor computer, such as a general purpose computer, a custom machine, a mobile phone terminal, or a portable device such as a tablet.
  • a terminal device such as a storage device terminal
  • the lower layer device 1201 includes: at least one processor 1211, a memory 1212, a bus 1213, a transmitter 1214, and The receiver 1215, the at least one processor 1211, the memory 1212, the transmitter 1214, and the receiver 1215 are connected by a bus 1213 and complete communication with each other.
  • the bus 1213 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, a PCIe bus, or an EISA (Extended Industry Standard Architecture) bus.
  • the bus 1213 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 12, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 1212 is for executing application code of the inventive scheme, and the application code for executing the inventive scheme is stored in a memory and controlled by the processor 1211 for execution.
  • the memory can be a read only memory ROM or other type of static storage device that can store static information and instructions, a random access memory RAM or other type of dynamic storage device that can store information and instructions, or can be electrically erasable or programmable.
  • These memories are connected to the processor via a bus.
  • the processor 1211 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. Integrated circuits.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the processor 1211 is configured to invoke the program code in the memory 1212 to perform the operations of the remote unit and the near-end unit in the device embodiment corresponding to FIG. 10 described above. For details, refer to the device embodiment corresponding to FIG. Narration.
  • the lower layer device creates a virtual network unit for creating an instance.
  • Build an instance establish a connection between the virtual network elements that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units, receive the path information sent by the network management device, and The information is stored in the network device or the path information is stored in the storage space of each virtual network unit in the virtual network unit.
  • the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • the computer readable medium may include a RAM (Random Access Memory), a ROM (Read Only Memory), and an EEPROM (Electrically Erasable Programmable Read Only Memory).
  • CD-ROM Compact Disc Read Only Memory
  • CD-ROM Compact Disc Read Only Memory
  • Any connection may suitably be a computer readable medium.
  • coaxial cable, fiber optic cable, twisted pair, DSL (Digital Subscriber Line), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium.
  • the disc and the disc include a CD (Compact Disc), a laser disc, a compact disc, a DVD disc (Digital Versatile Disc), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied,
  • the disc is laser-optic Copy the data. Combinations of the above should also be included within the scope of the computer readable media.

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Abstract

The present invention relates to the field of electronic information. Disclosed is a method for creating a virtual network instance, which can solve the problem that when multiple paths between internal virtual network units in a network service are available for data, the failure of determining one of the paths for transmission causes service interruption. The specific solution is: acquiring network service descriptive information; using virtual network units with expected instance creation as virtual network units with expected instance creation according to the network service descriptive information; sending resource requirement information and connection information of the virtual network units with expected instance creation to a lower-layer device; sending path information to a network device of the lower-layer device, or sending the path information to each of the virtual network units; and selecting a transmission path according to the path information when data is under transmission between the virtual network units. The present invention is applied to creation of a virtual network instance.

Description

一种虚拟网络实例的创建方法以及设备Method and device for creating virtual network instance 技术领域Technical field
本发明涉以及电子信息领域,尤其涉以及一种虚拟网络实例的创建方法以及设备。The present invention relates to the field of electronic information, and in particular to a method and device for creating a virtual network instance.
背景技术Background technique
NFV(Network Function Virtualization,网络功能虚拟化)通过使用通用的硬件设备以及虚拟化技术来实现网络中一些专用设备的功能,使得网络服务不再依赖于专用的硬件设备,从而降低了部署专用设备的成本。NFV (Network Function Virtualization) realizes the functions of some special devices in the network by using common hardware devices and virtualization technologies, so that network services are no longer dependent on dedicated hardware devices, thereby reducing the deployment of dedicated devices. cost.
在现有技术中,通过对NS(Network Service,网络服务)创建实例,可以将虚拟网络服务架构在实体硬件上实现,例如,要定义NS中的VNF(Virtualized Network Function,虚拟网络功能)单元,并描述各个VNF单元之间的连接关系。当用户应用该NS时,数据就可以通过定义的VNF单元以及各个VNF单元之间的连接关系在虚拟网络中进行传输。In the prior art, by creating an instance of the NS (Network Service), the virtual network service architecture can be implemented on the physical hardware. For example, a VNF (Virtualized Network Function) unit in the NS is defined. And describes the connection relationship between the various VNF units. When the user applies the NS, the data can be transmitted in the virtual network through the defined VNF unit and the connection relationship between the various VNF units.
但是,在实现上述方法的过程中,发明人发现当数据在VNF单元之间有多条路径可以选择的时候,因为不能确定从哪条路径进行传输,会导致业务中断。However, in the process of implementing the above method, the inventors found that when data has multiple paths to be selected between VNF units, it is impossible to determine which path to transmit from, which may result in service interruption.
发明内容Summary of the invention
本发明的实施例提供一种虚拟网络实例的创建方法以及装置,能够解决当数据在VNF单元之间有多条路径可以选择的时候,因为不能确定从哪条路径进行传输,从而导致业务中断的问题。Embodiments of the present invention provide a method and an apparatus for creating a virtual network instance, which can solve the problem that when data has multiple paths to be selected between VNF units, it is impossible to determine which path to transmit from, thereby causing service interruption. problem.
为达到上述目的,本发明的实施例采用如下技术方案:In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:
第一方面,一种虚拟网络实例的创建方法,应用于网络管理设备,包括:In a first aspect, a method for creating a virtual network instance is applied to a network management device, including:
获取网络服务描述信息,所述网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息,其中,所述路径信息用 于指示数据在所述虚拟网络单元之间的传输路径,所述连接信息用于指示所述虚拟网络单元之间的连接关系,所述每一个虚拟网络单元的资源需求信息用于分别指示为所述每一个虚拟网络单元创建实例所需要的资源;Obtaining network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used by And indicating the transmission path between the virtual network units, the connection information is used to indicate a connection relationship between the virtual network units, and the resource requirement information of each virtual network unit is used to indicate Describe the resources required for each virtual network unit to create an instance;
根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为第一虚拟网络单元;Determining, according to the network service description information, a virtual network unit that needs to create an instance, and using the virtual network unit that needs to create an instance as the first virtual network unit;
将所述第一虚拟网络单元的资源需求信息发送至下层设备,以便于所述下层设备为所述第一虚拟网络单元创建实例;Transmitting the resource requirement information of the first virtual network unit to the lower layer device, so that the lower layer device creates an instance for the first virtual network unit;
将所述连接信息发送至下层设备,以便于所述下层设备在所述第一虚拟网络单元之间建立连接,或者在所述第一虚拟网络单元与其它虚拟网络单元之间建立连接;Sending the connection information to the lower layer device, so that the lower layer device establishes a connection between the first virtual network unit, or establishes a connection between the first virtual network unit and another virtual network unit;
将所述路径信息发送至所述下层设备,以便于所述下层设备存储所述路径信息。And sending the path information to the lower layer device, so that the lower layer device stores the path information.
结合第一方面,在第一种可能的实现方式中,所述将路径信息发送至所述下层设备具体包括:With reference to the first aspect, in the first possible implementation, the sending the path information to the lower layer device specifically includes:
将所述路径信息发送至所述下层设备的网络设备,以便于所述下层设备的所述网络设备存储所述路径信息;或者,Sending the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information; or
将所述路径信息发送至所述虚拟网络单元中每一个虚拟网络单元,以便于所述虚拟网络单元中每一个虚拟网络单元存储所述路径信息。And transmitting the path information to each of the virtual network units, so that each of the virtual network units stores the path information.
结合第一方面,在第二种可能的实现方式中,In combination with the first aspect, in a second possible implementation manner,
所述虚拟网络单元中每一个虚拟网络单元的资源需求信息包括所述资源需求信息对应的虚拟网络单元的处理速度信息以及所述虚拟网络单元的存储空间信息中的至少一个;The resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit;
所述连接信息包括所述虚拟网络单元之间的连接类型以及带宽信息中的至少一个。The connection information includes at least one of a connection type and bandwidth information between the virtual network units.
结合第一方面,在第三种可能的实现方式中, In combination with the first aspect, in a third possible implementation,
根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为需要创建实例的虚拟网络单元,包括:Determining, according to the network service description information, a virtual network unit that needs to create an instance, and using the virtual network unit that needs to create an instance as a virtual network unit that needs to create an instance, including:
在已经存储的状态信息中查询所述虚拟网络单元中的每一个虚拟网络单元是否已经创建实例;Querying, in the already stored state information, whether each virtual network unit in the virtual network unit has created an instance;
如果所述状态信息指示所述状态信息对应的虚拟网络单元没有创建实例,则将所述虚拟网络单元确定为需要创建实例的虚拟网络单元。If the status information indicates that the virtual network unit corresponding to the status information does not create an instance, the virtual network unit is determined to be a virtual network unit that needs to create an instance.
结合第一方面,在第四种可能的实现方式中,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。With reference to the first aspect, in a fourth possible implementation, the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
结合第一方面,在第五种可能的实现方式中,选择传输路径的条件包括根据数据的业务类型选择传输路径。In combination with the first aspect, in a fifth possible implementation, the condition for selecting a transmission path includes selecting a transmission path according to a service type of the data.
第二方面,一种虚拟网络实例的创建方法,应用于下层设备,包括:In a second aspect, a method for creating a virtual network instance is applied to an underlying device, including:
接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,根据所述资源需求信息为需要创建实例的虚拟网络单元创建实例,其中,所述资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源;Receiving resource requirement information of the virtual network unit that needs to be created by the network management device, and creating an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the resource requirement information is used to indicate that it is a virtual network unit. The resources needed to create an instance;
接收所述网络管理设备发送的连接信息,根据所述连接信息在所述需要创建实例的虚拟网络单元之间建立连接,或者在所述需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,其中,所述连接信息用于指示虚拟网络单元之间的连接关系;Receiving connection information sent by the network management device, establishing a connection between the virtual network units that need to create an instance according to the connection information, or establishing between the virtual network unit that needs to create an instance and other virtual network units. a connection, wherein the connection information is used to indicate a connection relationship between virtual network units;
接收所述网络管理设备发送的路径信息,并将所述路径信息存储在网络设备中,或者将所述路径信息存储在所述虚拟网络单元中每一个虚拟网络单元的存储空间中,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径。Receiving path information sent by the network management device, and storing the path information in a network device, or storing the path information in a storage space of each virtual network unit in the virtual network unit, the path Information is used to indicate the transmission path of data between the virtual network elements.
结合第二方面,在第一种可能的实现方式中,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。With reference to the second aspect, in a first possible implementation manner, the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
结合第二方面的第一种可能的实现方式,第二种可能的实现方式进一步包 括:In combination with the first possible implementation of the second aspect, the second possible implementation further includes include:
接收数据,根据存储的所述路径信息确定数据的传输路径为第一传输路径;Receiving data, determining, according to the stored path information, a data transmission path as the first transmission path;
根据所述路径信息确定的数据的传输路径确定所述数据传输的下一个虚拟网络单元的标识;Determining an identifier of a next virtual network unit of the data transmission according to a transmission path of the data determined by the path information;
根据所述下一个虚拟网络单元的标识将所述数据传输至所述下一个虚拟网络单元。Transmitting the data to the next virtual network element based on the identity of the next virtual network element.
结合第二方面的第一种可能的实现方式,在第三种可能的实现方式中,In conjunction with the first possible implementation of the second aspect, in a third possible implementation,
选择传输路径的条件包括根据数据的业务类型选择传输路径。The conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
第三方面,一种网络管理设备,包括:In a third aspect, a network management device includes:
网络运维模块,用于获取网络服务描述信息,所述网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息,其中,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径,所述连接信息用于指示所述虚拟网络单元之间的连接关系,所述每一个虚拟网络单元的资源需求信息用于分别指示为所述每一个虚拟网络单元创建实例所需要的资源;a network operation and maintenance module, configured to acquire network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate data a transmission path between the virtual network units, the connection information is used to indicate a connection relationship between the virtual network units, and resource requirement information of each virtual network unit is used to indicate each of the The resources required by the virtual network unit to create an instance;
所述网络运维模块,还用于根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为第一虚拟网络单元;The network operation and maintenance module is further configured to determine, according to the network service description information, a virtual network unit that needs to create an instance, and use the virtual network unit that needs to create an instance as the first virtual network unit;
所述下层基础设备管理模块,用于接收所述网络运维模块传输的所述第一虚拟网络单元的所述资源需求信息以及所述连接信息,并将所述网络运维模块获取的所述资源需求信息发送至下层设备,以便于所述下层设备为所述第一虚拟网络单元创建实例,将所述连接信息发送至所述下层设备,以便于所述下层设备在所述第一虚拟网络单元之间建立连接,或者在所述第一虚拟网络单元与其它虚拟网络单元之间建立连接; And the lower layer basic device management module, configured to receive the resource requirement information of the first virtual network unit and the connection information that are sent by the network operation and maintenance module, and obtain the The resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the first virtual network unit, and sends the connection information to the lower layer device, so that the lower layer device is in the first virtual network. Establishing a connection between the units or establishing a connection between the first virtual network unit and other virtual network units;
所述下层基础设备管理模块,还用于将所述网络运维模块获取的所述路径信息发送至所述下层设备,以便于所述下层设备存储所述路径信息。结合第三方面,在第一种可能的实现方式中,The underlying device management module is further configured to send the path information acquired by the network operation and maintenance module to the lower layer device, so that the lower layer device stores the path information. In combination with the third aspect, in a first possible implementation manner,
所述下层基础设备管理模块将路径信息发送至所述下层设备具体包括:The sending, by the underlying basic device management module, the path information to the lower layer device specifically includes:
所述下层基础设备管理模块用于将所述路径信息发送至所述下层设备的网络设备,以便于所述下层设备的所述网络设备存储所述路径信息;或者,The lower layer device management module is configured to send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information; or
所述下层基础设备管理模块用于将所述路径信息发送至所述虚拟网络单元中每一个虚拟网络单元,以便于所述虚拟网络单元中每一个虚拟网络单元存储所述路径信息。The underlying base device management module is configured to send the path information to each virtual network unit in the virtual network unit, so that each virtual network unit in the virtual network unit stores the path information.
结合第三方面,在第二种可能的实现方式中,In combination with the third aspect, in a second possible implementation manner,
所述虚拟网络单元中每一个虚拟网络单元的资源需求信息包括所述资源需求信息对应的虚拟网络单元的处理速度信息以及所述虚拟网络单元的存储空间信息中的至少一个;The resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit;
所述连接信息包括所述虚拟网络单元之间的连接类型以及带宽信息中的至少一个。The connection information includes at least one of a connection type and bandwidth information between the virtual network units.
结合第三方面,在第三种可能的实现方式中,In combination with the third aspect, in a third possible implementation manner,
所述网络管理设备还包括数据库模块,用于存储状态信息;The network management device further includes a database module for storing state information;
所述网络运维模块,还用于在所述数据库模块已经存储的所述状态信息中查询所述虚拟网络单元中的每一个虚拟网络单元是否已经创建实例,如果所述状态信息指示所述状态信息对应的虚拟网络单元没有创建实例,则将所述虚拟网络单元确定为需要创建实例的虚拟网络单元。The network operation and maintenance module is further configured to query, in the status information that has been stored by the database module, whether each virtual network unit in the virtual network unit has created an instance, if the status information indicates the status If the virtual network unit corresponding to the information does not create an instance, the virtual network unit is determined to be a virtual network unit that needs to create an instance.
结合第三方面,在第四种可能的实现方式中,In combination with the third aspect, in a fourth possible implementation manner,
所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The path information also includes a policy of selecting a path, the policy including a condition for selecting a transmission path.
结合第三方面,在第五种可能的实现方式中, In combination with the third aspect, in a fifth possible implementation manner,
选择传输路径的条件包括根据数据的业务类型选择传输路径。The conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
第四方面,一种下层设备,包括:In a fourth aspect, a lower layer device includes:
接收模块,用于接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,并将所述资源需求信息传输至实例创建模块,其中,所述资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源;a receiving module, configured to receive resource requirement information of a virtual network unit that needs to be created by the network management device, and transmit the resource requirement information to an instance creation module, where the resource requirement information is used to indicate that the virtual network is a virtual network The resources required for the unit to create an instance;
所述实例创建模块,用于根据所述资源需求信息为所述需要创建实例的虚拟网络单元创建实例,其中,所述需要创建实例的虚拟网络单元为所述网络管理设备确定的在虚拟网络单元中需要创建实例的虚拟网络单元;The instance creation module is configured to create an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the virtual network unit that needs to create an instance determines the virtual network unit determined by the network management device The virtual network unit in which the instance needs to be created;
所述接收模块,还用于接收所述网络管理设备发送的连接信息,并将所述连接信息传输至所述连接建立模块,其中,所述连接信息用于指示所述虚拟网络单元之间的连接关系;The receiving module is further configured to receive connection information sent by the network management device, and transmit the connection information to the connection establishment module, where the connection information is used to indicate between the virtual network units Connection relationship
连接建立模块,用于根据所述连接信息在所述需要创建实例的虚拟网络单元之间建立连接,或者在所述需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接;a connection establishing module, configured to establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units;
所述接收模块,还用于接收所述网络管理设备发送的路径信息,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径;The receiving module is further configured to receive path information sent by the network management device, where the path information is used to indicate a transmission path of data between the virtual network units;
存储模块,用于存储所述路径信息。a storage module, configured to store the path information.
结合第四方面,在第一种可能的实现方式中,In combination with the fourth aspect, in a first possible implementation manner,
所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The path information also includes a policy of selecting a path, the policy including a condition for selecting a transmission path.
结合第四方面的第一种可能的实现方式,在第二种可能的实现方式中,In conjunction with the first possible implementation of the fourth aspect, in a second possible implementation manner,
所述接收模块,还用于接收数据;The receiving module is further configured to receive data;
所述下层设备还包括路径选择模块和转发模块,The lower layer device further includes a path selection module and a forwarding module.
所述路径选择模块,用于根据存储的所述路径信息确定所述数据的传输路径为第一传输路径,根据所述路径信息确定的数据的传输路径确定所述数据传 输的下一个虚拟网络单元的标识;The path selection module is configured to determine, according to the stored path information, that the transmission path of the data is the first transmission path, and determine the data transmission according to the transmission path of the data determined by the path information. The identity of the next virtual network element lost;
所述转发模块,用于根据所述下一个虚拟网络单元的标识将所述数据传输至所述下一个虚拟网络单元。The forwarding module is configured to transmit the data to the next virtual network unit according to the identifier of the next virtual network unit.
结合第四方面的第一种可能的实现方式,在第三种可能的实现方式中,In conjunction with the first possible implementation of the fourth aspect, in a third possible implementation,
选择传输路径的条件包括根据数据的业务类型选择传输路径。The conditions for selecting a transmission path include selecting a transmission path according to the type of service of the data.
本发明实施例提供的虚拟网络实例的创建方法以及装置,通过获取包括了路径信息的网络服务描述信息,根据包括了路径信息的网络服务描述信息确定需要创建实例的虚拟网络单元,根据需要创建实例的虚拟网络单元的资源需求信息为需要创建实例的虚拟网络单元创建实例,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,将网络描述信息中包含的路径信息进行存储,当数据在网络服务内部的VNF单元之间传输时,根据路径信息选择传输路径,由此解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The method and device for creating a virtual network instance provided by the embodiment of the present invention, by acquiring the network service description information including the path information, determining the virtual network unit that needs to create an instance according to the network service description information including the path information, and creating an instance as needed The resource requirement information of the virtual network unit creates an instance for the virtual network unit that needs to create an instance, establishes a connection between the virtual network elements that need to create an instance according to the connection information, or creates a virtual network unit and other virtual network units that need to create an instance. Establish a connection, store the path information contained in the network description information, and when the data is transmitted between the VNF units inside the network service, select the transmission path according to the path information, thereby solving the problem that when there are multiple transmission paths, Determine the service interruption caused by which transmission path is transmitted.
附图说明DRAWINGS
为了更清楚地说明本发明实施例的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获取其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.
图1为本发明的实施例提供的虚拟网络实例的创建方法的一种应用场景示意图;FIG. 1 is a schematic diagram of an application scenario of a method for creating a virtual network instance according to an embodiment of the present invention;
图2为本发明的实施例提供的一种虚拟网络实例的创建方法流程示意图;2 is a schematic flowchart of a method for creating a virtual network instance according to an embodiment of the present invention;
图3为本发明的实施例提供的另一种虚拟网络实例的创建方法流程示意图; 3 is a schematic flowchart of another method for creating a virtual network instance according to an embodiment of the present invention;
图4为本发明的实施例提供的再一种虚拟网络实例的创建方法流程示意图;4 is a schematic flowchart of a method for creating another virtual network instance according to an embodiment of the present invention;
图5为本发明的实施例提供的一种数据传输路径示意图;FIG. 5 is a schematic diagram of a data transmission path according to an embodiment of the present invention; FIG.
图6本发明的实施例提供的一种数据传输方法流程示意图;FIG. 6 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;
图7为本发明的实施例提供的一种VNF单元连接关系的示意图;FIG. 7 is a schematic diagram of a VNF unit connection relationship according to an embodiment of the present invention; FIG.
图8为本发明的实施例提供的另一种VNF单元连接关系的示意图;FIG. 8 is a schematic diagram of another VNF unit connection relationship according to an embodiment of the present invention; FIG.
图9为本发明的实施例提供的一种网络管理设备的结构示意图;FIG. 9 is a schematic structural diagram of a network management device according to an embodiment of the present invention;
图10为本发明的实施例提供的一种下层设备的结构示意图;FIG. 10 is a schematic structural diagram of a lower layer device according to an embodiment of the present invention;
图11为本发明的实施例提供的另一种网络管理设备的结构示意图;FIG. 11 is a schematic structural diagram of another network management device according to an embodiment of the present invention;
图12为本发明的实施例提供的另一种下层设备的结构示意图。FIG. 12 is a schematic structural diagram of another lower layer device according to an embodiment of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下获取的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
本发明的实施例提供一种NFV(Network Function Virtualization,网络功能虚拟化)系统,该NFV系统结构参照图1所示,能够实现网络服务(NS,Network Service)的实例化。网络服务指运行在网络中的应用,比如web服务,视频服务等。An embodiment of the present invention provides an NFV (Network Function Virtualization) system. The NFV system structure can be instantiated by using a network service (NS) as shown in FIG. Network services refer to applications running on the network, such as web services, video services, and so on.
NFV技术利用通用硬件设备代替专用网络管理设备,为网络服务创建实例从而实现网络服务的虚拟化,使得网络服务不再依赖于专用的硬件设备。The NFV technology utilizes a common hardware device instead of a dedicated network management device to create an instance of the network service to virtualize the network service, so that the network service no longer depends on the dedicated hardware device.
运营商网络的OSS/BSS(Operation support System/Business Support System,运营支撑系统/业务支撑系统)。OSS/BSS (Operation Support System/Business Support System) of the carrier network.
网络管理设备包括:NFVO(Network Functions Virtualization Orchestrator, 网络虚拟化运维器),统一负责资源的分配和管理,包括在网络服务的实例化过程中为网络服务分配资源、对已经实例化的网络服务进行增加资源或者减少资源的处理、撤除已经实例化的网络服务所占用的资源等。Network management equipment includes: NFVO (Network Functions Virtualization Orchestrator, Network virtualization operation and maintenance device), responsible for the allocation and management of resources, including allocating resources for network services during the instantiation of network services, adding resources to network services that have been instantiated, or reducing the processing and removal of resources. Resources occupied by network services.
Catalog,数据库,用于接收并保存运营商网络的OSS/BSS提出的实例化申请中所包含的NSD信息、已有VNF实例的信息等信息。The catalog, the database, is used for receiving and storing information such as NSD information included in the instantiation application proposed by the OSS/BSS of the operator network, information of the existing VNF instance, and the like.
VNFM(VNF Manager,管理模块),负责对一个或者多个VNF实例的管理。VNFM (VNF Manager, Management Module), responsible for the management of one or more VNF instances.
VIM(Virtualised Infrastructure Manager,虚拟化下层设备的管理模块),在为网络服务创建实例的过程中,向NFVI(Network Functions Virtualization Infrastructure,网络功能虚拟化基础设施)申请为网络服务创建实例所需要的资源。VIM (Virtualised Infrastructure Manager, the management module of the virtualized lower-layer device), in the process of creating an instance for the network service, apply to the NFVI (Network Functions Virtualization Infrastructure) for the resources needed to create an instance for the network service. .
下层设备可以是NFVI,包括计算资源、存储资源、网络资源等。通过向下层设备申请资源,为网络服务创建实例。The lower layer device may be an NFVI, including computing resources, storage resources, network resources, and the like. Create an instance for the network service by applying for resources from the lower layer device.
本发明的实施例提供一种虚拟网络实例的创建方法,可选的,应用于上述图1所示的NFV系统中的网络管理设备,参照图2所示,包括以下步骤:An embodiment of the present invention provides a method for creating a virtual network instance. Optionally, the network management device applied to the NFV system shown in FIG. 1 is as shown in FIG. 2, and includes the following steps:
201、获取网络服务描述信息。201. Obtain a network service description information.
网络服务描述信息NSD(Network Service Description,网络服务描述)用于描述一个网络服务(NS,Network Service)。可选的,网络管理设备可以在网络服务用户设备发送的网络服务申请中获取NSD,网络服务申请为网络服务用户设备需要部署并实例化某种网络服务时向网络管理设备发送的申请。The Network Service Description (NSD) is used to describe a Network Service (NS). Optionally, the network management device may obtain the NSD in the network service request sent by the network service user equipment, where the network service application is an application sent by the network management device when the network service user equipment needs to deploy and instantiate a certain network service.
一个网络服务包括至少一个VNF(Virtualized Network Function,虚拟网络功能)单元,网络管理设备为一个VNF单元创建实例,一个实例化的VNF单元称为一个VNF实例(VNF Instance)。可选的,网络服务用户设备向网络管理设备提出的网络服务申请用于申请对网络服务中的VNF单元进行实例化,以及对已经实例化的某些VNF单元进行升级、更改、请求增加资源或者减少 资源等操作。网络服务的实例化申请的具体内容包括网络服务的NSD,具体的,NSD包括路径信息、连接信息、网络服务所包括的VNF单元中每一个VNF单元的描述信息。A network service includes at least one VNF (Virtualized Network Function) unit, the network management device creates an instance for a VNF unit, and an instantiated VNF unit is called a VNF Instance. Optionally, the network service user equipment submits the network service request to the network management device for applying for instantiation of the VNF unit in the network service, and upgrading, changing, requesting to add resources to some VNF units that have been instantiated or cut back Resources and other operations. The specific content of the instantiation application of the network service includes the NSD of the network service. Specifically, the NSD includes path information, connection information, and description information of each VNF unit in the VNF unit included in the network service.
其中,路径信息用于指示数据在至少两个VNF单元之间的传输路径。在数据传输过程中,通过查询路径信息可以确定数据传输的目标VNF单元,继而向目标VNF单元传输数据。The path information is used to indicate a transmission path of data between at least two VNF units. In the data transmission process, the target VNF unit of the data transmission can be determined by querying the path information, and then the data is transmitted to the target VNF unit.
连接信息用于指示至少两个VNF单元之间的连接关系,包括至少两个VNF单元之间的连接类型以及带宽信息。可选的,连接类型可以是IPv4或者IPv6。The connection information is used to indicate a connection relationship between the at least two VNF units, including a connection type between at least two VNF units and bandwidth information. Optionally, the connection type can be IPv4 or IPv6.
每一个VNF单元的描述信息称为一个VNFD(VNF Description,VNF单元描述),每个VNFD包括相应VNF需要运行的软件和平台信息,以及该VNF的资源需求信息。资源需求信息用于指示为该VNF单元创建实例所需要的资源,包括计算资源、存储资源等。The description information of each VNF unit is called a VNFD (VNF Description), and each VNFD includes software and platform information that the corresponding VNF needs to run, and resource requirement information of the VNF. The resource requirement information is used to indicate resources required for creating an instance for the VNF unit, including computing resources, storage resources, and the like.
202、根据网络服务描述信息确定需要创建实例的虚拟网络单元。202. Determine, according to the network service description information, a virtual network unit that needs to create an instance.
网络管理设备根据每一个VNFD确定哪些是需要创建实例的VNF单元,并将需要创建实例的VNF单元作为第一VNF单元。The network management device determines which VNF unit needs to create an instance according to each VNFD, and uses the VNF unit that needs to create an instance as the first VNF unit.
具体的,以NSD中的某一个VNFD为例,在数据库中对已经创建实例的VNF单元进行查询,如果存在VNF1,VNF1的空闲资源满足该VNFD的描述,那么,网络管理设备可以将VNF1分配给网络服务,而无需再实例化该VNFD所描述的VNF单元。如果已有的VNF实例中不存在VNF1,则需要将该VNFD所描述的VNF单元实例化。Specifically, taking a VNFD in the NSD as an example, the VNF unit that has created the instance is queried in the database. If the VNF1 exists and the idle resource of the VNF1 satisfies the description of the VNFD, the network management device may allocate the VNF1 to the VNF1. Network services without the need to instantiate the VNF unit described by the VNFD. If VNF1 does not exist in an existing VNF instance, the VNF unit described by the VNFD needs to be instantiated.
可选的,网络服务包括至少一个VNF单元,第一VNF单元可以有一个第一VNF单元,也可以有多个第一VNF单元。Optionally, the network service includes at least one VNF unit, and the first VNF unit may have one first VNF unit or multiple first VNF units.
203、将需要创建实例的虚拟网络单元的资源需求信息发送至下层设备,以便于下层设备为需要创建实例的虚拟网络单元创建实例。203. Send resource requirement information of the virtual network unit that needs to create an instance to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance.
网络管理设备将第一VNF单元的资源需求信息发送至下层设备,请求下 层设备为第一VNF单元分配资源,并为第一VNF单元创建实例。The network management device sends the resource requirement information of the first VNF unit to the lower layer device, and requests the next The layer device allocates resources for the first VNF unit and creates an instance for the first VNF unit.
可选的,当有多个第一VNF单元时,网络管理设备分别将每个第一VNF单元实例化。进一步可选的,可以将资源需求信息包含在实例化创建请求中,发送至下层设备。Optionally, when there are multiple first VNF units, the network management device instantiates each of the first VNF units. Further optionally, the resource requirement information may be included in the instantiation creation request and sent to the lower layer device.
204、将连接信息发送至下层设备,以便于下层设备在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。204. Send the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network units that need to create an instance, or establishes a connection between the virtual network unit that needs to create an instance and other virtual network units.
在第一VNF单元实例化后,第一VNF单元需要与网络服务内的其他VNF单元建立连接。具体的,下层设备根据连接信息所描述的连接关系在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。After the first VNF unit is instantiated, the first VNF unit needs to establish a connection with other VNF units within the network service. Specifically, the lower layer device establishes a connection between the virtual network units that need to create an instance according to the connection relationship described by the connection information, or establishes a connection between the virtual network unit that needs to create an instance and other virtual network units.
在一种应用场景中,网络管理设备在为网络服务分配资源的时候,将一个或者多个已有的VNF实例分配给了网络服务,在这些被分配给网络服务的已有的VNF实例之间,如果已经建立了满足连接信息的连接,则网络服务可以直接使用已有连接而无需建立新的连接。如果这些被分配给网络服务的已有的VNF实例之间,还没有建立满足连接信息的连接,则按照连接关系为这些被分配给网络服务的已有的VNF实例建立连接。In an application scenario, the network management device allocates one or more existing VNF instances to the network service when allocating resources for the network service, between the existing VNF instances assigned to the network service. If a connection that satisfies the connection information has been established, the network service can directly use the existing connection without establishing a new connection. If the existing VNF instances assigned to the network service have not established a connection that satisfies the connection information, then the connection is established for the existing VNF instances assigned to the network service according to the connection relationship.
205、将路径信息发送至下层设备的网络设备,以便于下层设备的网络设备存储路径信息,或者,将路径信息发送至虚拟网络单元中每一个虚拟网络单元,以便于虚拟网络单元中每一个虚拟网络单元存储路径信息。205. Send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to each virtual network unit in the virtual network unit, so as to facilitate each virtual virtual network unit. The network unit stores path information.
可选的,网络设备可以是路由器,或者SDN(Software Defined Network,软件定义网络)控制器。网络管理设备在获取NSD之后,将路径信息发送至下层设备的网络设备,由下层设备的网络设备存储路径信息,或者将路径信息发送至虚拟网络单元中每一个虚拟网络单元,由虚拟网络单元中每一个虚拟网络单元存储路径信息。这样当数据在网络服务所包括的VNF单元之间传输时, 就能够由下层设备的网络设备或者虚拟网络单元中每一个虚拟网络单元根据存储的路径信息选择数据的传输路径。Optionally, the network device may be a router or an SDN (Software Defined Network) controller. After acquiring the NSD, the network management device sends the path information to the network device of the lower layer device, and the network device of the lower layer device stores the path information, or sends the path information to each virtual network unit in the virtual network unit, where the virtual network unit is used. Each virtual network unit stores path information. Thus when data is transferred between VNF units included in the network service, It is possible to select a transmission path of data according to the stored path information by each of the network devices of the lower device or the virtual network unit.
本发明的实施例提供的虚拟网络实例的创建方法,通过获取包括了路径信息的网络服务描述信息,根据包含路径信息的网络服务描述信息确定需要创建实例的虚拟网络单元,将需要创建实例的虚拟网络单元的资源需求信息发送至下层设备,以便于下层设备为需要创建实例的虚拟网络单元创建实例,将连接信息发送至下层设备,以便于下层设备在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,将路径信息发送至下层设备的网络设备,以便于下层设备的网络设备存储路径信息,或者,将路径信息发送至虚拟网络单元中每一个虚拟网络单元,以便于虚拟网络单元中每一个虚拟网络单元存储路径信息。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The method for creating a virtual network instance provided by the embodiment of the present invention, by obtaining the network service description information including the path information, determining the virtual network unit that needs to create an instance according to the network service description information including the path information, and the virtual instance of the instance needs to be created. The resource requirement information of the network unit is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network units that need to create an instance. Or establishing a connection between the virtual network unit that needs to create an instance and other virtual network units, and sending the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to the virtual device. Each virtual network unit in the network unit facilitates storage of path information for each virtual network unit in the virtual network unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
本发明的实施例提供另一种虚拟网络实例的创建方法,可选的,应用于上述图1所示的NFV所示的系统中的下层设备,优选的,该下层设备为NFVI,参照图3所示,包括以下步骤:An embodiment of the present invention provides another method for creating a virtual network instance. Optionally, the method is applied to the lower layer device in the system shown in FIG. 1 . Preferably, the lower layer device is an NFVI. As shown, the following steps are included:
301、接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,根据资源需求信息为需要创建实例的虚拟网络单元创建实例。301. Receive resource requirement information of a virtual network unit that needs to be created by the network management device, and create an instance for the virtual network unit that needs to create an instance according to the resource requirement information.
其中,资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源;The resource requirement information is used to indicate resources required to create an instance for a virtual network unit.
需要创建实例的虚拟网络单元为网络管理设备确定的在虚拟网络单元中需要创建实例的虚拟网络单元。资源分配请求包括了需要创建实例的虚拟网络单元的资源需求信息,该资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源。The virtual network unit that needs to create an instance for the network management device determines the virtual network unit that needs to create an instance in the virtual network unit. The resource allocation request includes resource requirement information of a virtual network unit that needs to create an instance, and the resource requirement information is used to indicate resources required to create an instance for one virtual network unit.
下层设备包括了创建虚拟网络实例所需要的资源,包括计算资源、存储资 源等。下层设备根据接收到的资源分配请求中包括的需要创建实例的虚拟网络单元的资源需求信息,为需要创建实例的虚拟网络单元分配资源,将需要创建实例的虚拟网络单元实例化。The underlying device includes the resources required to create a virtual network instance, including computing resources and storage resources. Source, etc. The lower layer device allocates resources for the virtual network unit that needs to create an instance according to the resource requirement information of the virtual network unit that needs to be created in the received resource allocation request, and instantiates the virtual network unit that needs to create the instance.
302、接收网络管理设备发送的连接信息,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。302. Receive connection information sent by the network management device, establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units.
连接信息用于指示所少一个虚拟网络单元之间的连接关系,连接信息包含于NSD中。The connection information is used to indicate a connection relationship between one of the virtual network elements, and the connection information is included in the NSD.
可选的,在需要创建实例的虚拟网络单元的实例化完成后,下层设备接收网络管理设备发送的建立连接的请求,并根据该请求所包括的连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。Optionally, after the instantiation of the virtual network unit that needs to create the instance is completed, the lower layer device receives the request for establishing a connection sent by the network management device, and according to the connection information included in the request, between the virtual network units that need to create an instance. Establish a connection or establish a connection between a virtual network unit that needs to create an instance and other virtual network elements.
303、接收网络管理设备发送的路径信息,并将路径信息存储在网络设备中,或者将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。303. Receive path information sent by the network management device, and store the path information in the network device, or store the path information in a storage space of each virtual network unit in the virtual network unit.
路径信息用于在网络服务处理业务的时候,指示数据在网络服务所包括的VNF单元之间的传输路径。将路径信息存储下来,在数据传输过程中查询路径信息,按照路径信息所指示的传输路径进行数据传输。The path information is used to indicate a transmission path of data between VNF units included in the network service when the network service processes the service. The path information is stored, the path information is queried during the data transmission process, and the data is transmitted according to the transmission path indicated by the path information.
本发明的实施例提供的虚拟网络实例的创建方法,根据资源需求信息为需要创建实例的虚拟网络单元创建实例,接收网络管理设备发送的连接信息,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,接收网络管理设备发送的路径信息,并将路径信息存储在网络设备中,或者将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时 因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The method for creating a virtual network instance provided by the embodiment of the present invention creates an instance for the virtual network unit that needs to create an instance according to the resource requirement information, receives the connection information sent by the network management device, and creates a virtual network unit of the instance according to the connection information. Establish a connection, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units, receive path information sent by the network management device, store the path information in the network device, or store the path information in the virtual network. In the storage space of each virtual network unit in the unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves when there are multiple transmission paths. Because the service interruption problem caused by which transmission path is transmitted cannot be determined.
本发明的实施例提供再一种虚拟网络实例的创建方法,可选的,应用与上述图1所示的NFV系统,优选的,本实施例以NFV系统中的NFVO、Catalog、VNFM、VIM以及NFVI为例对虚拟网络实例的创建方法行说明,当然,本实施例只是举例说明,并不代表本发明局限于此,参照图4所示,包括以下步骤:An embodiment of the present invention provides a method for creating a virtual network instance. Optionally, the application is the NFV system shown in FIG. 1 above. Preferably, the embodiment uses NFVO, Catalog, VNFM, VIM in the NFV system, and The NFVI is used as an example to describe the method for creating a virtual network instance. Of course, the embodiment is merely illustrative, and the present invention is not limited thereto. Referring to FIG. 4, the following steps are included:
401、NFVO获取网络服务描述信息。401. The NFVO obtains network service description information.
网络服务包括至少一个虚拟网络单元,网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息。其中,路径信息用于指示数据在虚拟网络单元之间的传输路径,连接信息用于指示虚拟网络单元之间的连接关系,每一个虚拟网络单元的资源需求信息用于分别指示为每一个虚拟网络单元创建实例所需要的资源。The network service includes at least one virtual network unit, and the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit. The path information is used to indicate a transmission path between the virtual network units, and the connection information is used to indicate a connection relationship between the virtual network units, and the resource requirement information of each virtual network unit is used to indicate each virtual network respectively. The resources required for the unit to create an instance.
具体的,NFVO接收由OSS/BSS发送的对网络服务的注册(On-boarding)请求。注册请求包括需要实例化的网络服务的具体描述信息NSD以及该NSD的标识。一个网络服务包括至少一个VNF单元,NSD中包括至少一个VNF单元中每一个VNF单元的VNFD。Specifically, the NFVO receives an On-boarding request for the network service sent by the OSS/BSS. The registration request includes specific description information NSD of the network service that needs to be instantiated and the identity of the NSD. A network service includes at least one VNF unit, and the NSF includes a VNFD of each of the at least one VNF unit.
示例性地,参照图5,本实施例以第一网络服务为例,对路径信息进行说明。第一网络服务用于在移动通信中提供HTTP网页浏览、视频以及通信业务,第一网络服务的具体功能与结构可能与实际情况不完全相同,在此仅用于举例说明。第一网络服务包括了多个VNF单元,分别为LB(Load Balancing,负载均衡),Web Proxy(网页代理),FW(Firewall,防火墙),Router ACL(Router Access Control List,路由器访问控制列表),Video Optimizer(视频优化器),NAT(Network Address Translation,网络地址转换)。数据在第一网络服务内的VNF单元之间的传输路径有三条。当第一网络服务处理HTTP网页浏览业务时,数据传输路径为:LB—Web Proxy—FW—NAT。当第一网络服务处理视频业务时,数据传输路径为:Video Optimizer—FW。当第一网络服务处理 FMC(Fixed Mobile Convergence)移动专网接入业务时,数据传输路径为:Router ACL,该条传输路径中只包括一个VNF单元,代表数据进入第一网络服务后只经过一个VNF单元,即Router ACL,然后就被发送出第一网络服务。每条数据传输路径对应着该条数据传输路径的策略,包括选择该条数据传输路径的条件。具体的,以HTTP网页浏览业务的数据传输路径为例,对于从第一网络服务外部接收到的数据,如果数据满足HTTP网页浏览业务数据传输路径的策略,则将数据传输至LB,按照顺序分别经过Web Proxy、FW、NAT后,数据从第一网络服务输出。Illustratively, referring to FIG. 5, the first network service is taken as an example to describe path information. The first network service is used to provide HTTP web browsing, video, and communication services in the mobile communication. The specific functions and structures of the first network service may not be exactly the same as the actual situation, and are merely used for illustration. The first network service includes a plurality of VNF units, which are LB (Load Balancing), Web Proxy (Web Proxy), FW (Firewall, Firewall), and Router ACL (Router Access Control List). Video Optimizer, Network Address Translation (NAT). There are three transmission paths between the VNF units in the first network service. When the first network service processes the HTTP web browsing service, the data transmission path is: LB—Web Proxy—FW—NAT. When the first network service processes the video service, the data transmission path is: Video Optimizer-FW. When the first network service is processed When the FMC (Fixed Mobile Convergence) mobile private network access service, the data transmission path is: Router ACL. The transmission path includes only one VNF unit. After the data enters the first network service, only one VNF unit is passed, that is, the Router ACL. And then it is sent out of the first network service. Each data transmission path corresponds to a policy of the data transmission path, including a condition for selecting the data transmission path. Specifically, taking the data transmission path of the HTTP webpage browsing service as an example, if the data received from the outside of the first network service satisfies the policy of the HTTP webpage browsing service data transmission path, the data is transmitted to the LB, in order, respectively. After Web Proxy, FW, and NAT, data is output from the first network service.
可选的,本实施例提供五种形式的NSD。在XML(Extensible Markup Language,可扩展标记语言)描述的第一种形式的NSD中,包括<Types>、ServiceTemplate(服务模板)以及<ServiceChaining>三部分。其中,<Types>包括以下内容:Optionally, this embodiment provides five forms of NSD. In the first form of NSD described in XML (Extensible Markup Language), it includes three parts: <Types>, ServiceTemplate (Service Template), and <ServiceChaining>. Among them, <Types> includes the following:
Figure PCTCN2015087670-appb-000001
Figure PCTCN2015087670-appb-000001
<Types>中定义了节点类型(NodeType)以及关系类型(RelationshipType)。节点类型用于定于VNF单元的类型属性。关系类型用于定义两个VNF单元之间的关系属性,包括两个VNF单元之间的连接关系、连接类型以及带宽信息等。 The node type (NodeType) and the relationship type (RelationshipType) are defined in <Types>. The node type is used for the type attribute of the VNF unit. The relationship type is used to define the relationship attribute between two VNF units, including the connection relationship between the two VNF units, the connection type, and the bandwidth information.
ServiceTemplate包括了第一网络服务中各个VNF单元的VNFD、每相邻的两个VNF单元之间的连接关系以及数据转发关系。The ServiceTemplate includes the VNFD of each VNF unit in the first network service, the connection relationship between each adjacent two VNF units, and the data forwarding relationship.
一个VNFD为一个节点模板(NodeTemplate),具体的,以第一网络服务所包括的一个VNF单元LB为例,LB的VNFD为:A VNFD is a node template. Specifically, a VNF unit LB included in the first network service is used as an example. The VNFD of the LB is:
Figure PCTCN2015087670-appb-000002
Figure PCTCN2015087670-appb-000002
其中,语句id=“LB”定义了该VNFD的标识为LB,节点类型为LoadBalanceType,LoadBalanceType已经在<Types>中定义,此处引用。Properties(属性)用于定义VNF单元的参数,其中包括VNF单元运行的软件以及镜像信息,以及对资源需求信息等,资源需求信息包括VNF单元的处理速度信息、VNF单元的存储空间信息等。可选的,处理速度信息可以包括中央处理器(CPU,Central Processing Unit)的时钟频率、核心数量等。The statement id=“LB” defines that the VNFD identifier is LB, the node type is LoadBalanceType, and the LoadBalanceType has been defined in <Types>, which is referred to here. The Properties are used to define the parameters of the VNF unit, including the software and image information of the VNF unit, and the resource requirement information. The resource requirement information includes the processing speed information of the VNF unit and the storage space information of the VNF unit. Optionally, the processing speed information may include a clock frequency of a central processing unit (CPU), a number of cores, and the like.
相邻的两个VNF单元之间的连接关系以及数据转发关系,通过一个关系模板(RelationshipTemplate)描述,以描述LB和Web Proxy之间连接关系以及数据转发关系的关系模板为例,具体如下:The relationship between the two adjacent VNF units and the data forwarding relationship is described by a relationship template (RelationshipTemplate). The relationship between the LB and the Web Proxy is described as an example. The details are as follows:
Figure PCTCN2015087670-appb-000003
Figure PCTCN2015087670-appb-000003
语句id=“Link1”定义了该关系模板的标识为Link1,语句type=“FollowedBy”定义Link1的关系类型为FollowedBy,FollowedBy为关系类型 的具体名称,本发明对描述数据传输关系的关系类型的具体名称不做限定。名称为FollowedBy的关系类型在<Types>中定义,用于描述两个相邻节点之间的数据传输关系,语句SourceElement ref=“LB”和语句TargetElement ref=“Web Proxy用于定义Link1所代表的数据传输关系,具体为从LB传输到Web Proxy。The statement id=“Link1” defines the relationship of the relationship template as Link1, and the statement type=“FollowedBy” defines the relationship type of Link1 as FollowedBy, and FollowedBy as the relationship type. The specific name of the present invention is not limited to the specific name of the relationship type describing the data transmission relationship. The relationship type named FollowedBy is defined in <Types> and is used to describe the data transfer relationship between two adjacent nodes. The statement SourceElement ref=“LB” and the statement TargetElement ref=“Web Proxy is used to define the link represented by Link1. Data transfer relationship, specifically from LB to Web Proxy.
<ServiceChaining>包括路径信息,每条数据传输路径用一个ServiceChainingTemplate描述,ServiceChainingTemplate描述一条数据传输路径中数据的转发关系以及该条数据传输路径的策略(Policy),即选择该条传输路径的条件。以标识为FG1的ServiceChainingTemplate为例,具体内容如下:<ServiceChaining> includes path information. Each data transmission path is described by a ServiceChainingTemplate. The ServiceChainingTemplate describes the forwarding relationship of data in a data transmission path and the policy of the data transmission path, that is, the condition for selecting the transmission path. Take the ServiceChainingTemplate with the identifier FG1 as an example. The details are as follows:
Figure PCTCN2015087670-appb-000004
Figure PCTCN2015087670-appb-000004
标识为FG1的ServiceChainingTemplate所描述的数据传输路径,包括Link1、Link2、Link3这三个连接,Link1、Link2、Link3分别为服务模板中三个关系模板的标识,这三个服务模板所描述的数据传输关系分别为从LB传输 到Web Proxy、从Web Proxy传输到FW、从FW传输到NAT,则由Link1、Link2、Link3共同描述的传输路径为:LB—Web Proxy—FW—NAT,即第一网络服务处理一个HTTP网页浏览业务时的数据传输路径。语句policyRef=“policyFG1”定义了该条传输路径的策略为policyFG1,policyFG1的具体内容在Type中定义,此处为引用。可选的,本实施例提供一种policyFG1的定义,具体内容如下:The data transmission path described by the ServiceChainingTemplate identified as FG1 includes three connections: Link1, Link2, and Link3. Link1, Link2, and Link3 are the identifiers of the three relationship templates in the service template, and the data transmission described by the three service templates. The relationship is transmitted from LB To the Web Proxy, from the Web Proxy to the FW, from the FW to the NAT, the transmission path described by Link1, Link2, and Link3 is: LB—Web Proxy—FW—NAT, that is, the first network service processes an HTTP web page browsing. The data transmission path for business. The statement policyRef=policyFG1 defines the policy of the transmission path as policyFG1. The specific content of policyFG1 is defined in Type, which is a reference here. Optionally, this embodiment provides a definition of policyFG1, and the specific content is as follows:
Figure PCTCN2015087670-appb-000005
Figure PCTCN2015087670-appb-000005
如果数据的协议类型为HTTP,且有效载荷的类型为HTML,则数据是HTTP网页浏览业务数据,那么将数据通过FG1所描述的传输路径进行传输。当然,此处仅是对HTTP网页浏览业务数据传输路径策略的举例说明,本发明对HTTP网页浏览业务数据传输路径策略的具体定义不做限定。If the protocol type of the data is HTTP and the payload type is HTML, then the data is HTTP web browsing service data, then the data is transmitted through the transmission path described by FG1. Of course, this is only an example of the HTTP web browsing service data transmission path policy. The specific definition of the HTTP web browsing service data transmission path policy is not limited.
同时,在<ServiceChaining>中,标识为FG2的ServiceChainingTemplate描述了视频业务的数据传输路径以及该数据传输路径的策略policyFG2,标识为FG3的ServiceChainingTemplate描述了FMC移动专网接入业务的数据传输路径以及该数据传输路径的策略policyFG3。与policyFG1相同,policyFG2以及policyFG3的具体内容也在<Types>中定义,此处为引用。 At the same time, in the <ServiceChaining>, the ServiceChainingTemplate identified as FG2 describes the data transmission path of the video service and the policy policyFG2 of the data transmission path, and the ServiceChainingTemplate identified as FG3 describes the data transmission path of the FMC mobile private network access service and the The policy of the data transmission path policyFG3. The same as policyFG1, the specific contents of policyFG2 and policyFG3 are also defined in <Types>, which is a reference here.
可选的,本实施例提供一种policyFG2的定义,具体内容如下:Optionally, this embodiment provides a definition of policyFG2, and the specific content is as follows:
Figure PCTCN2015087670-appb-000006
Figure PCTCN2015087670-appb-000006
如果数据的协议类型为RTP,且有效载荷的类型为31、32、33或者34,则数据是视频业务数据,那么将数据通过FG2所描述的传输路径进行传输。当然,此处仅是对视频业务数据传输路径策略的举例说明,本发明对对视频业务数据传输路径策略的具体定义不做限定。If the protocol type of the data is RTP and the payload type is 31, 32, 33 or 34, then the data is video service data, then the data is transmitted through the transmission path described by FG2. Of course, this is only an example of the video service data transmission path policy. The present invention does not limit the specific definition of the video service data transmission path policy.
可选的,本实施例提供一种policyFG3的定义,以FMC专用接入网段为10.138.*.*的情况为例,具体内容如下:Optionally, this embodiment provides a definition of a policyFG3, where the FMC dedicated access network segment is 10.138.*.*, and the specific content is as follows:
Figure PCTCN2015087670-appb-000007
Figure PCTCN2015087670-appb-000007
Figure PCTCN2015087670-appb-000008
Figure PCTCN2015087670-appb-000008
如果数据发送方的发送地址属于该网段,则数据是FMC移动专网接入业务数据,那么将数据通过FG3所描述的传输路径进行传输。当然,此处仅是对视频业务数据传输路径策略的举例说明,本发明对FMC移动专网接入业务数据传输路径策略的具体定义不做限定。If the sending address of the data sender belongs to the network segment, the data is the FMC mobile private network access service data, and then the data is transmitted through the transmission path described by FG3. Certainly, this is only an example of the video service data transmission path policy. The specific definition of the FMC mobile private network access service data transmission path policy is not limited.
第一种形式的NSD中,通过名称为FollowedBy的关系类型,描述相邻两个VNF单元之间的数据传输关系,通过ServiceChainingTemplate描述一条完整的数据传输路径。可选的,一条传输路径可以包括一个以上关系类型为FollowedBy的连接,由这些连接组成一条完整的传输路径一条数据传输路径,一条传输路径也可以只包括一个VNF单元,代表数据进入网络服务后只经过一个VNF单元就被发送出该网络服务。具体的,对一条传输路径只包括一个VNF单元的情况,以FMC移动专网接入业务的数据传输路径为例,该路径的描述信息具体如下:In the first form of NSD, a data transmission relationship between two adjacent VNF units is described by a relationship type named FollowedBy, and a complete data transmission path is described by a ServiceChainingTemplate. Optionally, a transmission path may include one or more connections of the relationship type FollowedBy, and the connections form a complete transmission path and a data transmission path, and one transmission path may also include only one VNF unit, which represents that the data only enters the network service. The network service is sent out through a VNF unit. Specifically, for a case where a transmission path includes only one VNF unit, the data transmission path of the FMC mobile private network access service is taken as an example, and the description information of the path is as follows:
Figure PCTCN2015087670-appb-000009
Figure PCTCN2015087670-appb-000009
Figure PCTCN2015087670-appb-000010
Figure PCTCN2015087670-appb-000010
其中,标识为FG3的FMC移动专网接入业务的数据传输路径,只包括Router ACL一个VNF,在路径信息中关于该条数据传输路径的描述中,就只包括Router ACL而没有关于数据转发关系的描述,代表数据进入第一网络服务后只经过一个VNF单元,即Router ACL,然后就被发送出第一网络服务。The data transmission path of the FMC mobile private network access service, which is identified as FG3, includes only one VNF of the Router ACL. The description of the data transmission path in the path information includes only the Router ACL and no data forwarding relationship. The description indicates that the data enters the first network service and passes through only one VNF unit, that is, the Router ACL, and then is sent out of the first network service.
可选的,本发明的实施例提供XML描述的第二种形式的NSD,包括<Types>以及ServiceTemplate两部分。与第一种形式的NSD相比较,第二种形式的NSD在<Types>中增加了新的名称为ServiceChainingType的节点类型,在ServiceTemplate中,通过一个节点类型为ServiceChainingType、名称为ServiceChaining的节点描述第一网络服务的路径信息,路径信息包括在名称为<ForwardingPathProperties>的元素中,路径信息包括对第一网络服务中的三条数据传输路径的描述,以及每条数据传输路径的策略。<ForwardingPathProperties>元素中,一个Path元素描述了一条数据传输路径,包括了该条数据传输路径的数据转发关系以及策略。以一个标识为FP1的Path元素为例,其具体内容如下:Optionally, an embodiment of the present invention provides a second form of NSD described by XML, including <Types> and ServiceTemplate. Compared with the first form of NSD, the second form of NSD adds a new node type named ServiceChainingType in <Types>. In the ServiceTemplate, a node description of the service type is ServiceChainingType and the name is ServiceChaining. A path information of the network service, the path information is included in an element named <ForwardingPathProperties>, the path information includes a description of three data transmission paths in the first network service, and a policy of each data transmission path. In the <ForwardingPathProperties> element, a Path element describes a data transmission path, including the data forwarding relationship and policy of the data transmission path. Take a Path element identified as FP1 as an example. The details are as follows:
Figure PCTCN2015087670-appb-000011
Figure PCTCN2015087670-appb-000011
Figure PCTCN2015087670-appb-000012
Figure PCTCN2015087670-appb-000012
标识为FP1的Path元素所描述的传输路径包括标识分别为Link1、Link2、Link3的连接,以Link1为例,语句<source ref=”LB”>以及<target ret=”Web Proxy”>定义了Link1所代表的数据传输关系,具体为数据从LB传输到FW。另外,标识为Link2的连接所描述的数据传输关系为从Web Proxy传输到FW,标识为Link3的连接所描述的数据传输关系为从FW传输到NAT。则标识为FP1的Path元素所描述的传输路径为HTTP网页浏览业务数据传输路径:LB—Web Proxy—FW—NAT,该路径的策略为policyFG1。其中每个VNF单元的VNFD与第一种形式的NSD中相同,此处不再赘述。The transmission path described by the Path element identified as FP1 includes the links identifying Link1, Link2, and Link3, respectively. Link1 is used as an example. The statement <source ref=”LB”> and <target ret=”Web Proxy”> define Link1. The data transmission relationship represented by the data is transmitted from the LB to the FW. In addition, the data transmission relationship described by the connection identified as Link2 is transmitted from the Web Proxy to the FW, and the data transmission relationship described by the connection identified as Link3 is from the FW to the NAT. The transmission path described by the Path element identified as FP1 is the HTTP web browsing service data transmission path: LB—Web Proxy—FW—NAT, and the policy of the path is policyFG1. The VNFD of each VNF unit is the same as that of the first form of NSD, and will not be described here.
可选的,本发明的实施例提供XML描述的第三种形式的NSD,通过名称为FollowedBy的关系类型,描述相邻两个VNF单元之间的数据传输关系,名称为FollowedBy的关系类型的具体定义与第一种形式的NSD中相同。通过名称为ServiceChainingType的节点类型,在节点模板中通过一个Path元素描述一条完整的数据传输路径。以HTTP网页浏览业务数据传输路径为例,该条数据传输路径为例的描述信息具体如下: Optionally, the embodiment of the present invention provides a third form of NSD described by XML, and describes a data transmission relationship between two adjacent VNF units by a relationship type named FollowedBy, and the specific type of the relationship name is FollowedBy. The definition is the same as in the first form of NSD. A complete data transmission path is described by a Path element in the node template by the node type named ServiceChainingType. Take the HTTP web browsing service data transmission path as an example. The description information of the data transmission path is as follows:
Figure PCTCN2015087670-appb-000013
Figure PCTCN2015087670-appb-000013
其中,标识分别为Link1、Link2、Link3的连接为关系类型为FollowedBy分别描述从LB传输到Web Proxy、从Web Proxy传输到FW、从FW传输到NAT的数据传输关系。标记为FP1的Path所描述的路径为LB—Web Proxy—FW—NAT,策略为policyFG1。其中每个VNFD以及相邻VNF传输关系的定义与第一种形式的NSD中相同,此处不再赘述。The connection with the links of Link1, Link2, and Link3 is a relationship type of FollowedBy, which describes the data transmission relationship from LB transmission to Web Proxy, from Web Proxy to FW, and from FW to NAT. The path described by the path labeled FP1 is LB—Web Proxy—FW—NAT, and the policy is policyFG1. The definition of each VNFD and the adjacent VNF transmission relationship is the same as that in the first form of NSD, and details are not described herein again.
可选的,本发明的实施例提供XML描述的第四种形式的NSD,在<ServiceChaining>元素中,每个ServiceChainingTemplate分别描述一条完整的数据传输路径,包括相邻VNF单元之间的数据转发关系以及该条数据传输路径的策略。以HTTP网页浏览业务数据传输路径为例,该条数据传输路径为例的描述信息具体如下:Optionally, the embodiment of the present invention provides a fourth form of NSD described by XML. In the <ServiceChaining> element, each ServiceChainingTemplate respectively describes a complete data transmission path, including a data forwarding relationship between adjacent VNF units. And the strategy of the data transmission path. Take the HTTP web browsing service data transmission path as an example. The description information of the data transmission path is as follows:
Figure PCTCN2015087670-appb-000014
Figure PCTCN2015087670-appb-000014
Figure PCTCN2015087670-appb-000015
Figure PCTCN2015087670-appb-000015
与第一种形式的NSD中通过<ServiceChaining>元素描述路径信息的不同之处在于,相邻两个VNF单元之间的数据传输关系,不是通过关系模板定义,而是在ServiceChainingTemplate中定义。以标识为link1的连接为例,语句<source ref=”LB”>以及<target ret=”Web Proxy”>定义了Link1所代表的数据传输关系为数据从LB传输到FW。另外,标识为Link2的连接所描述的数据传输关系为从Web Proxy传输到FW,标识为Link3的连接所描述的数据传输关系为从FW传输到NAT。则标识为FP1的Path元素所描述的数据传输路径 为:LB—Web Proxy—FW—NAT,该数据传输路径的策略为policyFG1。当数据传输路径只包括一个VNF时,路径信息只包括一个Link且该Link只包括“source”参数,此处以FMC移动专网接入业务的数据传输路径为例,该数据传输路径的描述信息具体如下:The difference from the description of the path information by the <ServiceChaining> element in the NSD of the first form is that the data transmission relationship between two adjacent VNF units is not defined by the relationship template, but is defined in the ServiceChainingTemplate. Taking the connection identified as link1 as an example, the statement <source ref=”LB”> and <target ret=”Web Proxy”> define the data transfer relationship represented by Link1 as data transfer from LB to FW. In addition, the data transmission relationship described by the connection identified as Link2 is transmitted from the Web Proxy to the FW, and the data transmission relationship described by the connection identified as Link3 is from the FW to the NAT. The data transmission path described by the Path element identified as FP1 It is: LB—Web Proxy—FW—NAT. The policy of the data transmission path is policyFG1. When the data transmission path includes only one VNF, the path information includes only one link and the link only includes the “source” parameter. Here, the data transmission path of the FMC mobile private network access service is taken as an example, and the description information of the data transmission path is specific. as follows:
Figure PCTCN2015087670-appb-000016
Figure PCTCN2015087670-appb-000016
可选的,第五种形式的NSD中,通过YAML数据描述语言对第一网络服务进行描述。通过名称为tosca.nodes.ServiceChaining的节点类型,在节点模板中对路径信息进行描述。具体的,在节点模板内,每个Path包括了对一条传输路径的描述以及该条传输路径的策略(Policy)。在一条传输路径内,两个VNF单元之间的数据传输关系通过Link来定义,Link内的“source”参数表示发送数据的VNF单元,Link内的“target”参数表示接收数据的VNF单元。可选的,一条传输路径内只包括一个VNF单元,则Path只包括一个Link,且Link内只包括“source”参数。可选的,一条传输路径可以包括一个Link或者由多 个Link组合而成。以HTTP网页浏览业务数据传输路径为例,该条数据传输路径为例的描述信息具体如下:Optionally, in the fifth form of the NSD, the first network service is described by a YAML data description language. The path information is described in the node template by the node type named tosca.nodes.ServiceChaining. Specifically, in the node template, each Path includes a description of a transmission path and a policy of the transmission path. In a transmission path, the data transmission relationship between two VNF units is defined by Link. The "source" parameter in the Link indicates the VNF unit that transmits the data, and the "target" parameter in the Link indicates the VNF unit that receives the data. Optionally, if only one VNF unit is included in a transmission path, the Path includes only one link, and only the “source” parameter is included in the link. Optionally, a transmission path may include a link or by multiple A combination of links. Take the HTTP web browsing service data transmission path as an example. The description information of the data transmission path is as follows:
Figure PCTCN2015087670-appb-000017
Figure PCTCN2015087670-appb-000017
本实施例提供的五种形式的NSD,对相邻两个VNF单元之间的数据传输关系进行描述,并进一步通过相邻的两个VNF单元之间的数据传输关系对完整传输路径进行描述。The five forms of NSD provided in this embodiment describe the data transmission relationship between two adjacent VNF units, and further describe the complete transmission path by the data transmission relationship between two adjacent VNF units.
402、NFVO接收到OSS/BSS发送的网络服务注册请求后,将NSD发送给数据库进行保存,可选的,在一种云计算的应用场景中,数据库具体为Catalog。After receiving the network service registration request sent by the OSS/BSS, the NFVO sends the NSD to the database for storage. Optionally, in a cloud computing application scenario, the database is specifically a catalog.
403、数据库将NSD保存后,NFVO向OSS/BSS发送注册请求确认消息,确认NSD保存成功。403. After the database saves the NSD, the NFVO sends a registration request confirmation message to the OSS/BSS to confirm that the NSD is successfully saved.
404、OSS/BSS向NFVO发送将网络服务实例化的请求,该请求中包括NSD的标识。404. The OSS/BSS sends a request for instantiating a network service to the NFVO, where the request includes an identifier of the NSD.
405、NFVO根据NSD的标识向数据库发送包括NSD标识的查询请求,该查询请求用于向数据库查询,网络服务所包括的VNF单元中,哪些需要创 建实例,哪些不需要创建实例。数据库中记录有已经创建实例的VNF单元的状态信息,数据库根据NSD在状态信息中查询,根据状态信息确定网络服务所包括的每一个VNF单元是否已经创建实例,如果网络服务所包括的某一个VNF单元没有创建实例,则将该VNF单元作为需要创建实例的虚拟网络单元。405. The NFVO sends a query request including an NSD identifier to the database according to the identifier of the NSD, where the query request is used to query the database, and which VNF units included in the network service need to be created. Build instances and which do not need to create instances. The database records the status information of the VNF unit that has created the instance. The database queries the status information according to the NSD, and determines whether each VNF unit included in the network service has created an instance according to the status information, if a VNF included in the network service If the cell does not create an instance, the VNF unit is used as a virtual network element that needs to create an instance.
具体的,数据库根据NSD标识查找到已经存储的NSD,根据状态信息对NSD所包括的每个VNFD进行确认。针对NSD包括的VNFD1,如果已有的VNF实例中存在VNF1,VNF1的空闲资源满足VNFD1的描述中对于资源的需求,则可以将VNF1分配给网络服务,而无需再实例化VNFD1所描述的VNF单元。如果根据状态信息确定已有的VNF实例中不存在VNF1,则需要实例化该VNFD所描述的VNF单元。Specifically, the database finds the NSD that has been stored according to the NSD identifier, and confirms each VNFD included in the NSD according to the status information. For VNFD1 included in NSD, if VNF1 exists in the existing VNF instance, and the idle resource of VNF1 satisfies the resource requirement in the description of VNFD1, VNF1 can be allocated to the network service without re-instantiating the VNF unit described by VNFD1. . If it is determined according to the state information that VNF1 does not exist in the existing VNF instance, it is necessary to instantiate the VNF unit described by the VNFD.
406、数据库将将需要创建实例的VNF单元作为第一VNF单元,并将第一VNF单元的VNFD的标示发送至NFVO。可选的,网络服务包括至少一个VNF单元,其中可以有一个第一VNF单元,也可以有多个第一VNF单元。406. The database will use the VNF unit that needs to create the instance as the first VNF unit, and send the identifier of the VNFD of the first VNF unit to the NFVO. Optionally, the network service includes at least one VNF unit, where there may be one first VNF unit or multiple first VNF units.
通过步骤404-406,网络管理设备将需要创建实例的虚拟网络单元作为需要创建实例的虚拟网络单元。Through steps 404-406, the network management device will use the virtual network unit that needs to create an instance as a virtual network unit that needs to create an instance.
407、NFVO向VNFM发送实例化第一VNF单元的请求,该请求中包含第一VNF单元的VNFD标示。407. The NFVO sends a request to the VNFM to instantiate the first VNF unit, where the request includes a VNFD indication of the first VNF unit.
408、VNFM根据第一VNF单元的VNFD标示向数据库请求第一VNF单元的VNFD。408. The VNFM requests the VNFD of the first VNF unit from the database according to the VNFD indication of the first VNF unit.
409、数据库向VNFM返回第一VNF单元的VNFD。409. The database returns the VNFD of the first VNF unit to the VNFM.
410、VNFM根据VNFD所包括的资源需求信息向NFVO发送资源分配请求。410. The VNFM sends a resource allocation request to the NFVO according to the resource requirement information included in the VNFD.
411、NFVO将该资源分配请求发送给VIM,请求为第一VNF单元创建实例。411. The NFVO sends the resource allocation request to the VIM, requesting to create an instance for the first VNF unit.
412、VIM根据该资源分配请求向NFVI申请需要的资源,以及为该VNF 单元建立需要的镜像。412. The VIM requests the NFVI for the required resource according to the resource allocation request, and for the VNF. The unit creates the required image.
413、NFVI在资源分配成功后向VIM发送资源分配确认消息,指示资源分配成功。其中,资源分配确认消息包括为第一VNF单元所分配资源的地址信息。413. After the resource allocation is successful, the NFVI sends a resource allocation confirmation message to the VIM, indicating that the resource allocation is successful. The resource allocation confirmation message includes address information of resources allocated for the first VNF unit.
414、VIM将该资源分配确认消息发送至NFVO。414. The VIM sends the resource allocation confirmation message to the NFVO.
415、NFVO将该资源分配确认消息发送至VNFM。415. The NFVO sends the resource allocation confirmation message to the VNFM.
416、VNFM根据为第一VNF单元所分配资源的地址信息,为第一VNF单元创建实例。416. The VNFM creates an instance for the first VNF unit according to the address information of the resource allocated for the first VNF unit.
417、VNFM向NFVO发送第一VNF单元实例创建确认消息,指示第一VNF单元实例创建成功。417. The VNFM sends a first VNF unit instance creation confirmation message to the NFVO, indicating that the first VNF unit instance is successfully created.
418、当有多个第一VNF单元时,重复步骤407-417。可选的,NFVO可以分别向不同的VNFM发送实例化第一VNF单元的请求,由不同的VNFM分别为多个第一VNF单元创建实例。418. When there are multiple first VNF units, repeat steps 407-417. Optionally, the NFVO may send a request for instantiating the first VNF unit to different VNFMs respectively, and different VNFMs respectively create instances for the plurality of first VNF units.
通过步骤407-418,下层设备接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,根据资源需求信息为需要创建实例的虚拟网络单元创建实例。Through the steps 407-418, the lower layer device receives the resource requirement information of the virtual network unit that needs to be created by the network management device, and creates an instance for the virtual network unit that needs to create an instance according to the resource requirement information.
419、NFVO向VIM发送建立连接的请求,请求根据NSD的描述在网络服务所包括的VNF单元之间建立连接。该请求中包括从NSD中获取的连接信息,连接信息用于指示网络服务所包括的VNF单元之间的连接关系。可选的,连接信息包括连接类型以及需要的带宽等。具体可选的,连接类型可以是IPv4(Internet Protocol Version 4,互联网协议第四版)或者IPv6(Internet Protocol Version 6,互联网协议第六版)。419. The NFVO sends a request for establishing a connection to the VIM, requesting to establish a connection between the VNF units included in the network service according to the description of the NSD. The request includes connection information obtained from the NSD, and the connection information is used to indicate a connection relationship between VNF units included in the network service. Optionally, the connection information includes the connection type and the required bandwidth. Optionally, the connection type may be IPv4 (Internet Protocol Version 4, Internet Protocol Version 4) or IPv6 (Internet Protocol Version 6, Internet Protocol Version 6).
420、VIM将从NFVO接收到的建立连接的请求发送至NFVI,请求根据NSD在网络服务所包括的VNF单元之间建立连接。420. The VIM sends a request for establishing a connection received from the NFVO to the NFVI, requesting to establish a connection between the VNF units included in the network service according to the NSD.
421、NFVI根据从VIM接收到的建立连接的请求为第一VNF单元建立连 接。结合步骤405,在一种应用场景中,在确定网络服务所包括的VNF单元中哪些需要创建实例,哪些不需要创建实例的时候,数据库向NFVO返回的结果指示,已有的VNF实例中存在VNF1,VNF1的富余资源满足VNFD1的描述,网络管理设备将VNF1实例分配给了网络服务。网络管理设备可以将多个已有的VNF实例分配给网络服务,这些被分配给网络服务的已有VNF实例之间,如果已经建立满足连接信息的连接,则可以直接使用已有连接而无需建立新连接。如果这些被分配给网络服务的已有VNF实例之间还没有建立满足连接信息的连接,则按照连接关系为这些已有VNF实例建立连接。421. The NFVI establishes a connection for the first VNF unit according to the request for establishing a connection received from the VIM. Pick up. In conjunction with step 405, in an application scenario, when determining which of the VNF units included in the network service need to create an instance and which do not need to create an instance, the result returned by the database to the NFVO indicates that the existing VNF instance has VNF1. The surplus resources of VNF1 satisfy the description of VNFD1, and the network management device allocates the VNF1 instance to the network service. The network management device can allocate multiple existing VNF instances to the network service. These are allocated to existing VNF instances of the network service. If a connection that satisfies the connection information has been established, the existing connection can be directly used without establishing. New connection. If the existing VNF instances assigned to the network service have not established a connection that satisfies the connection information, the connection is established for the existing VNF instances according to the connection relationship.
经过步骤419-421,下层设备接收网络管理设备发送的连接信息,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。然后NFVI向VIM返回连接建立成功的消息。After step 419-421, the lower layer device receives the connection information sent by the network management device, establishes a connection between the virtual network units that need to create an instance according to the connection information, or establishes between the virtual network unit that needs to create an instance and other virtual network units. connection. The NFVI then returns to the VIM a message that the connection was successfully established.
422、VIM向NFVO返回确认连接建立完成的消息。422. The VIM returns a message confirming that the connection establishment is completed to the NFVO.
423、存储路径信息。423. Store path information.
下层设备接收网络管理设备发送的路径信息,并将路径信息存储在网络设备中,或者将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。其中,下层设备的网络设备可以是路由器,或者SDN控制器。The lower layer device receives the path information sent by the network management device, and stores the path information in the network device, or stores the path information in a storage space of each virtual network unit in the virtual network unit. The network device of the lower layer device may be a router or an SDN controller.
NSD中的路径信息,用于在网络服务处理业务的时候,指示数据在网络服务所包括的VNF单元之间的传输路径。将路径信息存储下来,在数据传输过程中,查询路径信息,按照路径信息所指示的传输路径进行数据传输。The path information in the NSD is used to indicate the transmission path of the data between the VNF units included in the network service when the network service processes the service. The path information is stored, and in the data transmission process, the path information is queried, and the data transmission is performed according to the transmission path indicated by the path information.
可选的,本实施例提供两种存储路径信息的方式。Optionally, this embodiment provides two ways of storing path information.
在第一种存储路径信息的方式中,将路径信息存储在NFVI的网络设备中,则当数据在网络服务内部的VNF单元之间传输时,由NFVI的网络设备根据传输路径的策略选择传输路径。路径信息存储过程具体为,在第一VNF单元实例创建成功之后,或者为网络服务分配了已有的VNF实例之后,VNFM将VNF 实例的实例标识(Instance ID)发送至NFVO。其中,实例标识用于在数据传输过程中,指示将数据传输至某个VNF实例。NFVO将路径信息中的每一个VNFD标识用该VNFD所对应VNF实例的实例标识代替,将路径信息经VIM发送至NFVI的网络设备,由NFVI的网络设备存储路径信息。In the first way of storing path information, the path information is stored in the network device of the NFVI, and when the data is transmitted between the VNF units inside the network service, the network device of the NFVI selects the transmission path according to the policy of the transmission path. . The path information storage process is specifically: after the first VNF unit instance is successfully created, or after the existing VNF instance is allocated for the network service, the VNFM will VNF The instance ID of the instance is sent to the NFVO. The instance identifier is used to indicate that data is transmitted to a VNF instance during data transmission. The NFVO replaces each VNFD identifier in the path information with the instance identifier of the VNF instance corresponding to the VNFD, and sends the path information to the network device of the NFVI via the VIM, and the network device of the NFVI stores the path information.
可选的,结合步骤417-422,在第一种存储路径信息的方式中,VNFM、NFVO、VIM以及NFVI的之间的信息交互过程与为网络服务的VNF单元建立连接过程中的信息交互过程相同,因此路径信息的存储过程可以与为网络服务的VNF单元建立连接的过程同时完成。Optionally, in combination with steps 417-422, in the manner of storing the path information in the first manner, the information interaction process between the VNFM, the NFVO, the VIM, and the NFVI and the information interaction process in the process of establishing a connection with the VNF unit serving the network service The same, so the storage process of the path information can be completed simultaneously with the process of establishing a connection to the VNF unit of the network service.
在第二种存储路径信息的方式中,将NSD中包含的路径信息存储在每一个VNF单元的存储空间中,则当数据在网络服务内部的VNF单元之间传输时,由VNF实例根据传输路径的策略选择将数据传输至哪一个VNF单元。路径信息存储过程具体为,在网络服务所包括的VNF单元之间的连接建立完毕后,由NFVO将路径信息中的每一个VNFD标识用该VNFD所对应VNF实例的实例标识代替,同时针对每一个VNF单元,将与该VNF单元相关的路径信息从路径信息中分离出来,然后经VNFM发送至相应VNF实例存储。在此以第一网络服务为例,对针对每一个VNF单元的路径信息的分离进行示例说明。第一网络服务中共包括三条传输路径,分别是:In the second way of storing the path information, the path information included in the NSD is stored in the storage space of each VNF unit, and when the data is transmitted between the VNF units inside the network service, the VNF instance is based on the transmission path. The strategy chooses which VNF unit to transfer the data to. The path information storage process is specifically: after the connection between the VNF units included in the network service is established, the NFVO replaces each VNFD identifier in the path information with the instance identifier of the VNF instance corresponding to the VNFD, and for each The VNF unit separates the path information related to the VNF unit from the path information, and then sends the VNFM to the corresponding VNF instance storage. Here, taking the first network service as an example, the separation of the path information for each VNF unit is exemplified. The first network service includes three transmission paths, which are:
策略为policyFG1的HTTP网页浏览业务数据传输路径:LB—Web Proxy—FW—NAT;The policy is the HTTP web browsing service data transmission path of policyFG1: LB—Web Proxy—FW—NAT;
策略为policyFG2的视频业务数据传输路径:Video Optimizer—FW;The video service data transmission path of policyFG2 is: Video Optimizer-FW;
策略为policyFG3的FMC移动专网接入业务数据传输路径:Router ACL。The data transmission path of the FMC mobile private network access service of the policyFG3 is the Router ACL.
针对LB,分离出的路径信息为:LB将满足策略policyFG1的数据发送给Web Proxy;For the LB, the separated path information is: LB sends the data that meets the policy policyFG1 to the Web Proxy;
针对Web Proxy,分离出的路径信息为:Web Proxy将满足策略policyFG1的数据发送给FW; For the Web Proxy, the separated path information is: the Web Proxy sends the data satisfying the policy policyFG1 to the FW;
针对FW,HTTP网页浏览业务的数据以及视频业务的数据都经过FW,FW接收到的数据后,按照HTTP网页浏览业务传输路径的策略和视频业务传输路径的策略进行判断,根据判断结果选择相应的数据传输路径。结合步骤401中对HTTP网页浏览业务传输路径的策略的定义:For FW, the data of the HTTP web browsing service and the data of the video service are judged according to the policy of the HTTP webpage browsing service transmission path and the video service transmission path after the data received by the FW and the FW, and the corresponding result is selected according to the judgment result. Data transfer path. In combination with the definition of the policy for the HTTP web browsing service transmission path in step 401:
Figure PCTCN2015087670-appb-000018
Figure PCTCN2015087670-appb-000018
FW将协议类型为HTTP,且有效载荷的类型为HTML的数据发送给NAT。The FW sends the protocol type HTTP, and the payload type is HTML data to the NAT.
结合步骤401中对视频业务传输路径的策略的定义:In combination with the definition of the policy for the video service transmission path in step 401:
Figure PCTCN2015087670-appb-000019
Figure PCTCN2015087670-appb-000019
FW将协议类型为RTP,且有效载荷的类型为31、32、33或者34的数据发送出第一网络服务。The FW sends the first network service to the data of the type of the payload of 31, 32, 33 or 34.
类似地,将第一网络服务中每个VNF单元的路径信息进行分离,此处不再赘述。Similarly, the path information of each VNF unit in the first network service is separated, and details are not described herein again.
将针对每一个VNF单元分离出的路径信息存储到相应的VNF单元后,VNFM将路径信息保存成功的指示消息发送至NFVO。After the path information separated for each VNF unit is stored in the corresponding VNF unit, the VNFM sends an indication message that the path information is successfully saved to the NFVO.
424、在网络服务所包括的VNF单元之间的连接建立完毕,以及路径信息存储完毕后,NFVO向OSS/BSS返回网络实例建立完成的消息。424. After the connection between the VNF units included in the network service is established, and the path information is stored, the NFVO returns a message that the network instance is completed to the OSS/BSS.
基于上述图4对应的实施例,本发明的实施例提供一种数据传输方法,结合步骤423中的两种存储路径信息的方式,参照图6所示,包括以下步骤:Based on the embodiment corresponding to FIG. 4 above, an embodiment of the present invention provides a data transmission method. Referring to FIG. 6 in combination with the two methods for storing path information in step 423, the following steps are included:
601、下层设备接收数据数据,根据存储的路径信息确定数据的传输路径 为第一传输路径。601. The lower layer device receives the data data, and determines the data transmission path according to the stored path information. Is the first transmission path.
路径信息中一条传输路径的策略即为选择该传输路径的条件。网络服务实例化完成后,当下层设备接收到数据之后,对数据进行解析,对解析后的数据根据所存储的路径信息中的策略进行判断,如果解析后的数据满足某一条传输路径的策略,则该条传输路径为第一传输路径。The policy of a transmission path in the path information is the condition for selecting the transmission path. After the network service is instantiated, after the lower layer device receives the data, the data is parsed, and the parsed data is judged according to the policy in the stored path information. If the parsed data satisfies a certain transmission path policy, Then the transmission path is the first transmission path.
可选的,路径信息存储在NFVI的网络设备中,由NFVI的网络设备对数据进行解析并根据存储的路径信息选择数据的传输路径。Optionally, the path information is stored in the network device of the NFVI, and the network device of the NFVI parses the data and selects a data transmission path according to the stored path information.
可选的,路径信息存储在网络服务所包括的每一个VNF单元的存储空间中,当网络服务内部进行数据传输时,由VNF实例对数据进行解析并根据存储的路径信息选择数据的传输路径。Optionally, the path information is stored in a storage space of each VNF unit included in the network service. When the network service performs data transmission, the VNF instance parses the data and selects a data transmission path according to the stored path information.
可选的,数据传输路径的策略根据不同的业务类型选择不同的传输路径。具体的,以第一网络服务为例,第一网络服务在接收到数据后,对数据进行解析判以断数据的业务类型,如果解析后的数据满足policyFG1,即数据为HTTP网页浏览业务数据,则第一传输路径为:LB—Web Proxy—FW—NAT。如果解析后的数据满足policyFG2,即数据为视频业务数据,则第一传输路径为:Video Optimizer—FW。如果解析后的数据满足policyFG3,即数据为FMC移动专网接入业务数据,则第一传输路径为:Router ACL。本实施例中以视频业务数据传输路径为第一传输路径,对数据在第一网络服务的VNF单元之间传输的过程进行说明。Optionally, the policy of the data transmission path selects different transmission paths according to different service types. Specifically, the first network service is used as an example. After receiving the data, the first network service parses the data to determine the service type of the data. If the parsed data satisfies policyFG1, the data is HTTP web browsing service data. Then the first transmission path is: LB—Web Proxy—FW—NAT. If the parsed data satisfies policyFG2, that is, the data is video service data, the first transmission path is: Video Optimizer-FW. If the parsed data meets the policy FG3, that is, the data is the FMC mobile private network access service data, the first transmission path is: Router ACL. In this embodiment, the video service data transmission path is used as the first transmission path, and the process of data transmission between the VNF units of the first network service is described.
602、下层设备根据路径信息确定数据传输的下一个虚拟网络单元的标识,并根据下一个虚拟网络单元的标识将数据传输至下一个虚拟网络单元。602. The lower layer device determines, according to the path information, an identifier of a next virtual network unit of the data transmission, and transmits the data to the next virtual network unit according to the identifier of the next virtual network unit.
下层设备根据第一传输路径中数据在不同VNF单元之间的传输关系,确定数据传输的下一个VNF单元,并进一步确定其标识。可选的,VNF单元的标识可以为VNF单元的实例标识(Instance ID),实例标识在存储的路径信息中获取。 The lower layer device determines the next VNF unit of the data transmission according to the transmission relationship between the data in the first transmission path between the different VNF units, and further determines its identity. Optionally, the identifier of the VNF unit may be an instance identifier (Instance ID) of the VNF unit, and the instance identifier is obtained in the stored path information.
可选的,在路径信息存储在NFVI的网络设备中的应用场景中,结合图4所对应的实施例,第一网络服务的NSD所描述的连接关系如图7所示,其中,LB、Web Proxy、FW、RouterACL、VideoOptimizer以及NAT都连接在NFVI的网络设备上。第一网络服务实例化完成后,数据通过GW(Gate Way,网关)被传输至NFVI的网络设备,NFVI的网络设备根据传输路径的策略进行判断,确定数据传输的下一个VNF单元为Video Optimizer,并根据Video Optimizer的实例标识将数据传输至Video Optimizer。Video Optimizer将经过处理的数据传输回NFVI的网络设备,NFVI的网络设备再次根据传输路径的策略进行判断,确定数据传输的下一个VNF单元为FW,并根据FW的实例标识将数据传输至FW。FW将经过处理的数据传输回NFVI的网络设备,NFVI的网络设备根据传输路径的策略进行判断后将数据传输至GW,则数据从第一网络服务输出。至此,数据输入第一网络服务后,经过第一传输路径,从第一网络服务输出。Optionally, in the application scenario in which the path information is stored in the network device of the NFVI, in conjunction with the embodiment corresponding to FIG. 4, the connection relationship described by the NSD of the first network service is as shown in FIG. 7, where LB, Web Proxy, FW, RouterACL, VideoOptimizer, and NAT are all connected to the NFVI network device. After the instantiation of the first network service is completed, the data is transmitted to the network device of the NFVI through the GW (Gate Way), and the network device of the NFVI determines according to the policy of the transmission path, and determines that the next VNF unit of the data transmission is Video Optimizer. The data is transferred to the Video Optimizer according to the instance identifier of the Video Optimizer. The Video Optimizer transmits the processed data back to the network device of the NFVI. The network device of the NFVI judges again according to the policy of the transmission path, determines that the next VNF unit of the data transmission is FW, and transmits the data to the FW according to the instance identifier of the FW. The FW transmits the processed data back to the network device of the NFVI. The network device of the NFVI transmits the data to the GW according to the policy of the transmission path, and the data is output from the first network service. At this point, after the data is input to the first network service, it is output from the first network service through the first transmission path.
可选的,在路径信息存储在网络服务所包括的每一个VNF单元的存储空间中的场景中,结合图4所对应的实施例,第一网络服务的NSD所描述的连接关系如图8所示,其中,LB、Web Proxy、FW、RouterACL、VideoOptimizer以及NAT都连接在NFVI的网络设备上。由于路径信息保存在每个VNF单元的存储空间中,NFVI的网络设备只是按照收到数据中包含的下一个VNF单元的实例标识将数据传输至下一个VNF单元。对于从第一网络服务外部接收到的数据,数据中不包括接收数据的VNF单元的实例标识,NFVI的网络设备不能对其进行转发,因此第一网络服务的NSD中还包括入口VNF单元的VNFD,入口VNF单元连接在NFVI的网络设备上,用于对从网络服务外部接收到的数据进行第一次转发。Optionally, in the scenario where the path information is stored in the storage space of each VNF unit included in the network service, in conjunction with the embodiment corresponding to FIG. 4, the connection relationship described by the NSD of the first network service is as shown in FIG. 8. The LB, Web Proxy, FW, RouterACL, VideoOptimizer, and NAT are all connected to the NFVI network device. Since the path information is stored in the storage space of each VNF unit, the NFVI network device simply transmits the data to the next VNF unit according to the instance identifier of the next VNF unit included in the received data. For the data received from the outside of the first network service, the instance identifier of the VNF unit that receives the data is not included in the data, and the network device of the NFVI cannot forward the NFVI, so the NSD of the first network service further includes the VNFD of the entry VNF unit. The ingress VNF unit is connected to the network device of the NFVI for forwarding the data received from outside the network service for the first time.
从第一网络服务外部发送至第一网络服务的数据首先被发送至入口VNF单元,入口VNF单元根据存储的路径信息进行判断,确定数据传输的下一个 VNF单元。入口VNF单元所保存的路径信息为针对入口VNF单元分离出的路径信息,具体为,如果解析后的数据满足policyFG1,则数据传输的下一个VNF单元为LB。如果解析后的数据满足policyFG2,则数据传输的下一个VNF单元为Video Optimizer。如果解析后的数据满足policyFG3,则数据传输的下一个VNF单元为Router ACL。入口VNF单元确定数据传输的下一个VNF单元后,在数据中添加下一个VNF单元的标识,通过NFVI交换机将数据传输至下一个VNF单元。同样地,第一网络服务中的每个VNF单元对接收到的数据根据路径策略进行判断,确定数据传输的下一个VNF单元,并在数据中添加下一个VNF单元的标识,通过NFVI交换机将数据传输至下一个VNF单元。可选的,VNF单元的标识为VNF单元的实例标识。The data sent from the outside of the first network service to the first network service is first sent to the ingress VNF unit, and the ingress VNF unit makes a judgment based on the stored path information to determine the next one of the data transmission. VNF unit. The path information saved by the ingress VNF unit is path information separated for the ingress VNF unit. Specifically, if the parsed data satisfies policyFG1, the next VNF unit of the data transmission is LB. If the parsed data satisfies policyFG2, the next VNF unit of the data transfer is Video Optimizer. If the parsed data meets policyFG3, the next VNF unit of the data transmission is the Router ACL. After the ingress VNF unit determines the next VNF unit for data transmission, the identifier of the next VNF unit is added to the data, and the data is transmitted to the next VNF unit through the NFVI switch. Similarly, each VNF unit in the first network service determines the received data according to the path policy, determines the next VNF unit of the data transmission, and adds the identifier of the next VNF unit to the data, and the data is transmitted through the NFVI switch. Transfer to the next VNF unit. Optionally, the identifier of the VNF unit is an instance identifier of the VNF unit.
本实施例中,入口VNF单元确定数据传输的下一个VNF单元为Video Optimizer,入口VNF单元在数据中添加Video Optimizer的实例标识,通过NFVI交换机将数据传输至Video Optimizer。Video Optimizer根据传输路径的策略进行判断,确定数据传输的下一个VNF单元为FW,Video Optimizer在数据中添加FW的实例标识,通过NFVI交换机将数据传输至FW。同理,FW将数据传输至入口VNF单元,入口VNF单元将数据发送出第一网络服务,至此,数据输入第一网络服务后,经过第一传输路径,从第一网络服务输出。In this embodiment, the ingress VNF unit determines that the next VNF unit of the data transmission is a Video Optimizer, and the ingress VNF unit adds an instance identifier of the Video Optimizer to the data, and transmits the data to the Video Optimizer through the NFVI switch. The Video Optimizer judges according to the policy of the transmission path, determines that the next VNF unit of the data transmission is FW, and the Video Optimizer adds the instance identifier of the FW to the data, and transmits the data to the FW through the NFVI switch. Similarly, the FW transmits the data to the ingress VNF unit, and the ingress VNF unit sends the data out of the first network service. At this point, after the data is input to the first network service, the data is output from the first network service through the first transmission path.
本发明的实施例提供的虚拟网络实例的创建方法,在NSD中加入路径信息,其中路径信息描述了网络服务内相邻的每两个VNF单元之间的数据传输关系,以及数据在网络服务所包括的VNF单元之间的传输路径,并根据包括路径信息的NSD,完成虚拟网络实例的创建过程,同时储存路径信息。这样,当数据在网络服务所包括的VNF单元之间的传输时,根据路径信息选择数据的传输路径,由此解决了当数据在VNF单元之间有多条路径可以选择的时候,因为不能确定从哪条路径进行传输,而导致的业务中断问题。A method for creating a virtual network instance according to an embodiment of the present invention adds path information in an NSD, where the path information describes a data transmission relationship between each two adjacent VNF units in the network service, and the data is in the network service center. The transmission path between the VNF units is included, and the creation process of the virtual network instance is completed according to the NSD including the path information, and the path information is stored. In this way, when the data is transmitted between the VNF units included in the network service, the data transmission path is selected according to the path information, thereby solving the problem that when there are multiple paths between the VNF units, the data cannot be determined. From which path to transfer, resulting in business interruption problems.
本发明的实施例提供一种网络管理设备,可选的,该网络管理设备应用于 图1所示的NFV系统中,完成NFVO、Catalog、VNFM以及VIM的功能。参照图9所示,该网络管理设备901包括网络运维模块9011以及下层基础设备管理模块9012。An embodiment of the present invention provides a network management device. Optionally, the network management device is applied to In the NFV system shown in Fig. 1, the functions of NFVO, Catalog, VNFM, and VIM are completed. Referring to FIG. 9, the network management device 901 includes a network operation and maintenance module 9011 and a lower layer infrastructure management module 9012.
网络运维模块9011,用于获取网络服务描述信息,网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息,其中,路径信息用于指示数据在虚拟网络单元之间的传输路径,连接信息用于指示虚拟网络单元之间的连接关系,每一个虚拟网络单元的资源需求信息用于分别指示为每一个虚拟网络单元创建实例所需要的资源。The network operation and maintenance module 9011 is configured to acquire network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate that the data is in the virtual network. The transmission path between the units, the connection information is used to indicate the connection relationship between the virtual network units, and the resource requirement information of each virtual network unit is used to respectively indicate resources required for creating an instance for each virtual network unit.
网络运维模块9011,还用于根据网络服务描述信息确定需要创建实例的虚拟网络单元,将需要创建实例的虚拟网络单元作为第一虚拟网络单元。The network operation and maintenance module 9011 is further configured to determine, according to the network service description information, a virtual network unit that needs to create an instance, and use a virtual network unit that needs to create an instance as the first virtual network unit.
下层基础设备管理模块9012,用于接收网络运维模块传输的第一虚拟网络单元的资源需求信息以及连接信息,并将网络运维模块获取的资源需求信息发送至下层设备,以便于下层设备为第一虚拟网络单元创建实例,将连接信息发送至下层设备,以便于下层设备在第一虚拟网络单元之间建立连接,或者在第一虚拟网络单元与其它虚拟网络单元之间建立连接。The underlying device management module 9012 is configured to receive the resource requirement information and the connection information of the first virtual network unit that is transmitted by the network operation and maintenance module, and send the resource requirement information acquired by the network operation and maintenance module to the lower layer device, so that the lower layer device is The first virtual network unit creates an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the first virtual network unit or establishes a connection between the first virtual network unit and the other virtual network unit.
下层基础设备管理模块9012,还用于将网络运维模块9011获取的路径信息发送至下层设备,以便于下层设备存储路径信息。The underlying device management module 9012 is further configured to send the path information acquired by the network operation and maintenance module 9011 to the lower layer device, so that the lower layer device stores the path information.
可选的,下层基础设备管理模块9012还用于将路径信息发送至下层设备的网络设备,以便于下层设备的网络设备存储路径信息;或者,Optionally, the underlying basic device management module 9012 is further configured to send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information; or
下层基础设备管理模块9012用于将路径信息发送至虚拟网络单元中每一个虚拟网络单元,以便于虚拟网络单元中每一个虚拟网络单元存储路径信息。The lower base device management module 9012 is configured to send path information to each virtual network unit in the virtual network unit, so that each virtual network unit in the virtual network unit stores path information.
可选的,虚拟网络单元中每一个虚拟网络单元的资源需求信息包括资源需求信息对应的虚拟网络单元的处理速度信息以及虚拟网络单元的存储空间信息中的至少一个。Optionally, the resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit.
连接信息包括虚拟网络单元之间的连接类型以及带宽信息中的至少一个。 The connection information includes at least one of a connection type between the virtual network units and bandwidth information.
可选的,网络管理设备901还包括数据库模块9013,用于存储状态信息。Optionally, the network management device 901 further includes a database module 9013 for storing state information.
网络运维模块9011,还用于在数据库模块9013已经存储的状态信息中查询虚拟网络单元中的每一个虚拟网络单元是否已经创建实例,如果状态信息指示状态信息对应的虚拟网络单元没有创建实例,则将虚拟网络单元作为需要创建实例的虚拟网络单元。The network operation and maintenance module 9011 is further configured to query, in the state information that the database module 9013 has stored, whether each virtual network unit in the virtual network unit has created an instance, and if the state information indicates that the virtual network unit corresponding to the state information does not create an instance, The virtual network unit is used as a virtual network unit that needs to create an instance.
可选的,路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。Optionally, the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
可选的,选择传输路径的条件包括根据数据的业务类型选择传输路径。Optionally, the condition for selecting the transmission path includes selecting a transmission path according to the service type of the data.
本发明的实施例提供的网络管理设备,通过获取包括了路径信息的网络服务描述信息,根据包含路径信息的网络服务描述信息确定需要创建实例的虚拟网络单元,将需要创建实例的虚拟网络单元的资源需求信息发送至下层设备,以便于下层设备为需要创建实例的虚拟网络单元创建实例,将连接信息发送至下层设备,以便于下层设备在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,将路径信息发送至下层设备的网络设备,以便于下层设备的网络设备存储路径信息,或者,将路径信息发送至虚拟网络单元中每一个虚拟网络单元,以便于虚拟网络单元中每一个虚拟网络单元存储路径信息。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The network management device provided by the embodiment of the present invention determines the virtual network unit that needs to create an instance according to the network service description information that includes the path information, and obtains the virtual network unit that needs to create an instance. The resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network unit that needs to create an instance, or A virtual network unit that needs to create an instance establishes a connection with other virtual network units, and sends the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to the virtual network unit. Each virtual network unit facilitates storage of path information for each virtual network unit in the virtual network unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
本发明的实施例提供一种下层设备,可选的,该下层设备应用于图1所示的NFV系统中,完成NFVI的功能。参照图10所示,该网络管理设备1001包括接收模块1011、实例创建模块1012、连接建立模块1013以及存储模块1014。Embodiments of the present invention provide a lower layer device. Optionally, the lower layer device is applied to the NFV system shown in FIG. 1 to perform the function of the NFVI. Referring to FIG. 10, the network management device 1001 includes a receiving module 1011, an instance creating module 1012, a connection establishing module 1013, and a storage module 1014.
接收模块1011,用于接收网络管理设备1011发送的需要创建实例的虚拟网络单元的资源需求信息,并将资源需求信息传输至实例创建模块1012,其中, 资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源。The receiving module 1011 is configured to receive the resource requirement information of the virtual network unit that needs to be created by the network management device 1011, and transmit the resource requirement information to the instance creating module 1012, where Resource requirement information is used to indicate the resources needed to create an instance for a virtual network element.
实例创建模块1012,用于根据资源需求信息为需要创建实例的虚拟网络单元创建实例,其中,需要创建实例的虚拟网络单元为网络管理设备1011确定的在虚拟网络单元中需要创建实例的虚拟网络单元。The instance creation module 1012 is configured to create an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the virtual network unit that needs to create the instance is a virtual network unit determined by the network management device 1011 and needs to create an instance in the virtual network unit. .
接收模块1011,还用于接收网络管理设备1011发送的连接信息,并将连接信息传输至连接建立模块1013,其中,连接信息用于指示虚拟网络单元之间的连接关系。The receiving module 1011 is further configured to receive the connection information sent by the network management device 1011, and transmit the connection information to the connection establishing module 1013, where the connection information is used to indicate a connection relationship between the virtual network units.
连接建立模块1013,用于根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接。The connection establishing module 1013 is configured to establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units.
接收模块1011,还用于接收网络管理设备1011发送的路径信息,路径信息用于指示数据在虚拟网络单元之间的传输路径。The receiving module 1011 is further configured to receive path information sent by the network management device 1011, where the path information is used to indicate a transmission path of the data between the virtual network units.
存储模块1014,用于存储路径信息。The storage module 1014 is configured to store path information.
可选的,路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。Optionally, the path information further includes a policy for selecting a path, where the policy includes a condition for selecting a transmission path.
可选的,接收模块1011,还用于接收数据数据。Optionally, the receiving module 1011 is further configured to receive data data.
下层设备还包括路径选择模块1015和转发模块1016,The lower layer device further includes a path selection module 1015 and a forwarding module 1016,
路径选择模块1015,用于确定数据的传输路径为第一传输路径,根据存储的路径信息确定数据传输的下一个虚拟网络单元的标识。The path selection module 1015 is configured to determine that the data transmission path is the first transmission path, and determine the identifier of the next virtual network unit of the data transmission according to the stored path information.
转发模块1016,用于根据下一个虚拟网络单元的标识将数据传输至下一个虚拟网络单元。The forwarding module 1016 is configured to transmit data to the next virtual network unit according to the identifier of the next virtual network unit.
可选的,转发模块1016,还用于在数据中添加下一个虚拟网络单元的标识。Optionally, the forwarding module 1016 is further configured to add an identifier of the next virtual network unit to the data.
可选的,存储模块1014,具体用于将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。Optionally, the storage module 1014 is specifically configured to store path information in a storage space of each virtual network unit in the virtual network unit.
可选的,选择传输路径的条件包括根据数据的业务类型选择传输路径。 Optionally, the condition for selecting the transmission path includes selecting a transmission path according to the service type of the data.
本发明的实施例提供的下层设备,通过为需要创建实例的虚拟网络单元创建实例,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,接收网络管理设备发送的路径信息,并将路径信息存储在网络设备中,或者将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The lower layer device provided by the embodiment of the present invention establishes an instance between virtual network units that need to create an instance according to connection information by creating an instance for a virtual network unit that needs to create an instance, or a virtual network unit and other virtual ones that need to create an instance. The network unit establishes a connection, receives path information sent by the network management device, and stores the path information in the network device, or stores the path information in a storage space of each virtual network unit in the virtual network unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
本发明的实施例提供另一种网络管理设备1101,参照图11所示,该设备可以嵌入或者本身就是微处理计算机,比如:通用计算机、客户定制机、手机终端或者平板机等便携设备,以太网终端,存储设备终端等终端设备,该网络管理设备1101包括:至少一个处理器1111、存储器1112、总线1113、发送器1114和接收器1115,该至少一个处理器1111、存储器1112、发送器1114和接收器1115通过总线1113连接并完成相互间的通信。An embodiment of the present invention provides another network management device 1101. As shown in FIG. 11, the device may be embedded or itself a micro-processing computer, such as a general-purpose computer, a customized computer, a mobile terminal, or a portable device such as a tablet. A terminal device such as a network terminal, a storage device terminal, and the like, the network management device 1101 includes: at least one processor 1111, a memory 1112, a bus 1113, a transmitter 1114, and a receiver 1115, the at least one processor 1111, the memory 1112, and the transmitter 1114. The receiver 1115 is connected through the bus 1113 and completes communication with each other.
该总线1113可以是ISA(Industry Standard Architecture,工业标准体系结构)总线、PCI(Peripheral Component,外部设备互连)总线、PCIe总线或者EISA(Extended Industry Standard Architecture,扩展工业标准体系结构)总线等。该总线1113可以分为地址总线、数据总线、控制总线等。为便于表示,图11中仅用一条粗线表示,但并不表示仅有一根总线或者一种类型的总线。其中:The bus 1113 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, a PCIe bus, or an EISA (Extended Industry Standard Architecture) bus. The bus 1113 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 11, but it does not mean that there is only one bus or one type of bus. among them:
存储器1112用于执行本发明方案的应用程序代码,执行本发明方案的应用程序代码保存在存储器中,并由处理器1111来控制执行。The memory 1112 is for executing application code of the inventive scheme, and the application code for executing the inventive scheme is stored in a memory and controlled by the processor 1111 for execution.
该存储器可以是只读存储器ROM或者可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器RAM或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器EEPROM、只读光盘CD-ROM或者其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字 通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、FPGA(现场可编程逻辑门阵列)或者能够用于携带或者存储具有指令或者数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。这些存储器通过总线与处理器相连接。The memory can be a read only memory ROM or other type of static storage device that can store static information and instructions, a random access memory RAM or other type of dynamic storage device that can store information and instructions, or can be electrically erasable or programmable. Read-only memory EEPROM, CD-ROM or other CD storage, CD storage (including compact discs, laser discs, CDs, digital Universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, FPGAs (Field Programmable Logic Gate Arrays) or can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer Any other medium, but not limited to this. These memories are connected to the processor via a bus.
处理器1111可能是一个中央处理器1111(Central Processing Unit,简称为CPU),或者是特定集成电路(Application Specific Integrated Circuit,简称为ASIC),或者是被配置成实施本发明实施例的一个或者多个集成电路。The processor 1111 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. Integrated circuits.
处理器1111,用于调用存储器1112中的程序代码,用以执行上述图9对应的设备实施例中网络运维模块、下层基础设备管理模块以及数据库模块的操作,具体描述参照9对应的设备实施例,此处不再赘述。The processor 1111 is configured to invoke the program code in the memory 1112 to perform the operations of the network operation and maintenance module, the lower layer basic device management module, and the database module in the device embodiment corresponding to FIG. 9 above. For example, it will not be described here.
本发明的实施例提供的网络管理设备,通过获取包括了路径信息的网络服务描述信息,根据包含路径信息的网络服务描述信息确定需要创建实例的虚拟网络单元,将需要创建实例的虚拟网络单元的资源需求信息发送至下层设备,以便于下层设备为需要创建实例的虚拟网络单元创建实例,将连接信息发送至下层设备,以便于下层设备在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,将路径信息发送至下层设备的网络设备,以便于下层设备的网络设备存储路径信息,或者,将路径信息发送至虚拟网络单元中每一个虚拟网络单元,以便于虚拟网络单元中每一个虚拟网络单元存储路径信息。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The network management device provided by the embodiment of the present invention determines the virtual network unit that needs to create an instance according to the network service description information that includes the path information, and obtains the virtual network unit that needs to create an instance. The resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the virtual network unit that needs to create an instance, and sends the connection information to the lower layer device, so that the lower layer device establishes a connection between the virtual network unit that needs to create an instance, or A virtual network unit that needs to create an instance establishes a connection with other virtual network units, and sends the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information, or sends the path information to the virtual network unit. Each virtual network unit facilitates storage of path information for each virtual network unit in the virtual network unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
本发明的实施例提供另一种下层设备1201,参照图12所示,该设备可以嵌入或者本身就是微处理计算机,比如:通用计算机、客户定制机、手机终端或者平板机等便携设备,以太网终端,存储设备终端等终端设备,该下层设备1201包括:至少一个处理器1211、存储器1212、总线1213、发送器1214和 接收器1215,该至少一个处理器1211、存储器1212、发送器1214和接收器1215通过总线1213连接并完成相互间的通信。An embodiment of the present invention provides another lower layer device 1201. As shown in FIG. 12, the device may be embedded or itself a microprocessor computer, such as a general purpose computer, a custom machine, a mobile phone terminal, or a portable device such as a tablet. a terminal device, such as a storage device terminal, the lower layer device 1201 includes: at least one processor 1211, a memory 1212, a bus 1213, a transmitter 1214, and The receiver 1215, the at least one processor 1211, the memory 1212, the transmitter 1214, and the receiver 1215 are connected by a bus 1213 and complete communication with each other.
该总线1213可以是ISA(Industry Standard Architecture,工业标准体系结构)总线、PCI(Peripheral Component,外部设备互连)总线、PCIe总线或者EISA(Extended Industry Standard Architecture,扩展工业标准体系结构)总线等。该总线1213可以分为地址总线、数据总线、控制总线等。为便于表示,图12中仅用一条粗线表示,但并不表示仅有一根总线或者一种类型的总线。其中:The bus 1213 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus, a PCIe bus, or an EISA (Extended Industry Standard Architecture) bus. The bus 1213 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 12, but it does not mean that there is only one bus or one type of bus. among them:
存储器1212用于执行本发明方案的应用程序代码,执行本发明方案的应用程序代码保存在存储器中,并由处理器1211来控制执行。The memory 1212 is for executing application code of the inventive scheme, and the application code for executing the inventive scheme is stored in a memory and controlled by the processor 1211 for execution.
该存储器可以是只读存储器ROM或者可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器RAM或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器EEPROM、只读光盘CD-ROM或者其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、FPGA(现场可编程逻辑门阵列)或者能够用于携带或者存储具有指令或者数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。这些存储器通过总线与处理器相连接。The memory can be a read only memory ROM or other type of static storage device that can store static information and instructions, a random access memory RAM or other type of dynamic storage device that can store information and instructions, or can be electrically erasable or programmable. Read-only memory EEPROM, CD-ROM or other CD storage, CD storage (including compact discs, laser discs, CDs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, FPGAs (onsite The programmable logic gate array) can be used to carry or store any other medium having the desired program code in the form of an instruction or data structure and accessible by a computer, but is not limited thereto. These memories are connected to the processor via a bus.
处理器1211可能是一个中央处理器1211(Central Processing Unit,简称为CPU),或者是特定集成电路(Application Specific Integrated Circuit,简称为ASIC),或者是被配置成实施本发明实施例的一个或者多个集成电路。The processor 1211 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. Integrated circuits.
处理器1211,用于调用存储器1212中的程序代码,用以执行上述图10对应的设备实施例中远端单元以及近端单元的操作,具体描述参照图10对应的设备实施例,这里不再赘述。The processor 1211 is configured to invoke the program code in the memory 1212 to perform the operations of the remote unit and the near-end unit in the device embodiment corresponding to FIG. 10 described above. For details, refer to the device embodiment corresponding to FIG. Narration.
本发明的实施例提供的下层设备,通过为需要创建实例的虚拟网络单元创 建实例,根据连接信息在需要创建实例的虚拟网络单元之间建立连接,或者在需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,接收网络管理设备发送的路径信息,并将路径信息存储在网络设备中,或者将路径信息存储在虚拟网络单元中每一个虚拟网络单元的存储空间中。当数据在网络服务所包括的VNF单元之间传输时,根据路径信息选择传输路径,解决了当存在多条传输路径时因为不能确定从哪条传输路径进行传输而导致的业务中断问题。The lower layer device provided by the embodiment of the present invention creates a virtual network unit for creating an instance. Build an instance, establish a connection between the virtual network elements that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units, receive the path information sent by the network management device, and The information is stored in the network device or the path information is stored in the storage space of each virtual network unit in the virtual network unit. When data is transmitted between VNF units included in the network service, the transmission path is selected according to the path information, which solves the problem of service interruption caused by the inability to determine which transmission path is transmitted when there are multiple transmission paths.
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发明可以用硬件实现,或者固件实现,或者它们的组合方式来实现。当使用软件实现时,可以将上述功能存储在计算机可读介质中或者作为计算机可读介质上的一个或者多个指令或者代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于:计算机可读介质可以包括RAM(Random Access Memory,随机存储器)、ROM(Read Only Memory,只读内存)、EEPROM(Electrically Erasable Programmable Read Only Memory,电可擦可编程只读存储器)、CD-ROM(Compact Disc Read Only Memory,即只读光盘)或者其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或者存储具有指令或者数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。此外。任何连接可以适当的成为计算机可读介质。例如,如果软件是使用同轴电缆、光纤光缆、双绞线、DSL(Digital Subscriber Line,数字用户专线)或者诸如红外线、无线电和微波之类的无线技术从网站、服务器或者其他远程源传输的,那么同轴电缆、光纤光缆、双绞线、DSL或者诸如红外线、无线和微波之类的无线技术包括在所属介质的定影中。如本发明所使用的,盘和碟包括CD(Compact Disc,压缩光碟)、激光碟、光碟、DVD碟(Digital Versatile Disc,数字通用光)、软盘和蓝光光碟,其中盘通常磁性的复制数据,而碟则用激光来光学的 复制数据。上面的组合也应当包括在计算机可读介质的保护范围之内。Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to, the computer readable medium may include a RAM (Random Access Memory), a ROM (Read Only Memory), and an EEPROM (Electrically Erasable Programmable Read Only Memory). Read memory), CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, disk storage media or other magnetic storage device, or can be used to carry or store a desired program in the form of an instruction or data structure. Code and any other medium that can be accessed by a computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL (Digital Subscriber Line), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the fixing of the associated medium. As used in the present invention, the disc and the disc include a CD (Compact Disc), a laser disc, a compact disc, a DVD disc (Digital Versatile Disc), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied, The disc is laser-optic Copy the data. Combinations of the above should also be included within the scope of the computer readable media.
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或者替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应所述以权利要求的保护范围为准。 The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims (20)

  1. 一种虚拟网络实例的创建方法,其特征在于,应用于网络管理设备,包括:A method for creating a virtual network instance, which is characterized by being applied to a network management device, including:
    获取网络服务描述信息,所述网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息,其中,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径,所述连接信息用于指示所述虚拟网络单元之间的连接关系,所述每一个虚拟网络单元的资源需求信息用于分别指示为所述每一个虚拟网络单元创建实例所需要的资源;Obtaining network service description information, where the network service description information includes path information, connection information, resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate that the data is in the virtual network unit a transmission path, the connection information is used to indicate a connection relationship between the virtual network units, and resource requirement information of each virtual network unit is used to respectively indicate that an instance is created for each virtual network unit resource of;
    根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为第一虚拟网络单元;Determining, according to the network service description information, a virtual network unit that needs to create an instance, and using the virtual network unit that needs to create an instance as the first virtual network unit;
    将所述第一虚拟网络单元的资源需求信息发送至下层设备,以便于所述下层设备为所述第一虚拟网络单元创建实例;Transmitting the resource requirement information of the first virtual network unit to the lower layer device, so that the lower layer device creates an instance for the first virtual network unit;
    将所述连接信息发送至下层设备,以便于所述下层设备在所述第一虚拟网络单元之间建立连接,或者在所述第一虚拟网络单元与其它虚拟网络单元之间建立连接;Sending the connection information to the lower layer device, so that the lower layer device establishes a connection between the first virtual network unit, or establishes a connection between the first virtual network unit and another virtual network unit;
    将所述路径信息发送至所述下层设备,以便于所述下层设备存储所述路径信息。And sending the path information to the lower layer device, so that the lower layer device stores the path information.
  2. 根据权利要求1所述的方法,其特征在于,所述将路径信息发送至所述下层设备具体包括:The method according to claim 1, wherein the sending the path information to the lower layer device specifically includes:
    将所述路径信息发送至所述下层设备的网络设备,以便于所述下层设备的所述网络设备存储所述路径信息;或者,Sending the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information; or
    将所述路径信息发送至所述虚拟网络单元中每一个虚拟网络单元,以便于所述虚拟网络单元中每一个虚拟网络单元存储所述路径信息。 And transmitting the path information to each of the virtual network units, so that each of the virtual network units stores the path information.
  3. 根据权利要求1所述的方法,其特征在于,The method of claim 1 wherein
    所述虚拟网络单元中每一个虚拟网络单元的资源需求信息包括所述资源需求信息对应的虚拟网络单元的处理速度信息以及所述虚拟网络单元的存储空间信息中的至少一个;The resource requirement information of each virtual network unit in the virtual network unit includes at least one of processing speed information of the virtual network unit corresponding to the resource requirement information and storage space information of the virtual network unit;
    所述连接信息包括所述虚拟网络单元之间的连接类型以及带宽信息中的至少一个。The connection information includes at least one of a connection type and bandwidth information between the virtual network units.
  4. 根据权利要求1所述的方法,其特征在于,根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为需要创建实例的虚拟网络单元,包括:The method according to claim 1, wherein the virtual network unit that needs to create an instance is determined according to the network service description information, and the virtual network unit that needs to create an instance is used as a virtual network unit that needs to create an instance, including:
    在已经存储的状态信息中查询所述虚拟网络单元中的每一个虚拟网络单元是否已经创建实例;Querying, in the already stored state information, whether each virtual network unit in the virtual network unit has created an instance;
    如果所述状态信息指示所述状态信息对应的虚拟网络单元没有创建实例,则将所述虚拟网络单元确定为需要创建实例的虚拟网络单元。If the status information indicates that the virtual network unit corresponding to the status information does not create an instance, the virtual network unit is determined to be a virtual network unit that needs to create an instance.
  5. 根据权利要求1所述的方法,其特征在于,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The method according to claim 1, wherein the path information further comprises a policy of selecting a path, the policy comprising selecting a condition of a transmission path.
  6. 根据权利要求5所述的方法,其特征在于,选择传输路径的条件包括根据数据的业务类型选择传输路径。The method of claim 5 wherein selecting a condition of the transmission path comprises selecting a transmission path based on a type of service of the data.
  7. 一种虚拟网络实例的创建方法,其特征在于,应用于下层设备,包括:A method for creating a virtual network instance, which is applied to an underlying device, including:
    接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,根据所述资源需求信息为需要创建实例的虚拟网络单元创建实例,其中,所述资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源;Receiving resource requirement information of the virtual network unit that needs to be created by the network management device, and creating an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the resource requirement information is used to indicate that it is a virtual network unit. The resources needed to create an instance;
    接收所述网络管理设备发送的连接信息,根据所述连接信息在所述需要创 建实例的虚拟网络单元之间建立连接,或者在所述需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接,其中,所述连接信息用于指示虚拟网络单元之间的连接关系;Receiving connection information sent by the network management device, according to the connection information, in the need Establishing a connection between the virtual network units of the instance, or establishing a connection between the virtual network unit that needs to create an instance and other virtual network units, wherein the connection information is used to indicate a connection relationship between the virtual network units;
    接收所述网络管理设备发送的路径信息,并将所述路径信息存储在网络设备中,或者将所述路径信息存储在所述虚拟网络单元中每一个虚拟网络单元的存储空间中,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径。Receiving path information sent by the network management device, and storing the path information in a network device, or storing the path information in a storage space of each virtual network unit in the virtual network unit, the path Information is used to indicate the transmission path of data between the virtual network elements.
  8. 根据权利要求7所述的方法,其特征在于,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The method according to claim 7, wherein the path information further comprises a policy of selecting a path, the policy comprising selecting a condition of a transmission path.
  9. 根据权利要求8所述的方法,其特征在于,进一步包括:The method of claim 8 further comprising:
    接收数据,根据存储的所述路径信息确定数据的传输路径为第一传输路径;Receiving data, determining, according to the stored path information, a data transmission path as the first transmission path;
    根据所述路径信息确定的数据的传输路径确定所述数据传输的下一个虚拟网络单元的标识;Determining an identifier of a next virtual network unit of the data transmission according to a transmission path of the data determined by the path information;
    根据所述下一个虚拟网络单元的标识将所述数据传输至所述下一个虚拟网络单元。Transmitting the data to the next virtual network element based on the identity of the next virtual network element.
  10. 根据权利要求8所述的方法,其特征在于,选择传输路径的条件包括根据数据的业务类型选择传输路径。The method of claim 8 wherein the condition of selecting the transmission path comprises selecting the transmission path based on the type of service of the data.
  11. 一种网络管理设备,其特征在于,包括:A network management device, comprising:
    网络运维模块,用于获取网络服务描述信息,所述网络服务描述信息包括路径信息、连接信息、虚拟网络单元中每一个虚拟网络单元的资源需求信息,其中,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径,所述 连接信息用于指示所述虚拟网络单元之间的连接关系,所述每一个虚拟网络单元的资源需求信息用于分别指示为所述每一个虚拟网络单元创建实例所需要的资源;a network operation and maintenance module, configured to acquire network service description information, where the network service description information includes path information, connection information, and resource requirement information of each virtual network unit in the virtual network unit, where the path information is used to indicate data a transmission path between the virtual network units, the The connection information is used to indicate a connection relationship between the virtual network units, where the resource requirement information of each virtual network unit is used to respectively indicate resources required for creating an instance for each virtual network unit;
    所述网络运维模块,还用于根据所述网络服务描述信息确定需要创建实例的虚拟网络单元,将所述需要创建实例的虚拟网络单元作为第一虚拟网络单元;The network operation and maintenance module is further configured to determine, according to the network service description information, a virtual network unit that needs to create an instance, and use the virtual network unit that needs to create an instance as the first virtual network unit;
    所述下层基础设备管理模块,用于接收所述网络运维模块传输的所述第一虚拟网络单元的所述资源需求信息以及所述连接信息,并将所述网络运维模块获取的所述资源需求信息发送至下层设备,以便于所述下层设备为所述第一虚拟网络单元创建实例,将所述连接信息发送至所述下层设备,以便于所述下层设备在所述第一虚拟网络单元之间建立连接,或者在所述第一虚拟网络单元与其它虚拟网络单元之间建立连接;And the lower layer basic device management module, configured to receive the resource requirement information of the first virtual network unit and the connection information that are sent by the network operation and maintenance module, and obtain the The resource requirement information is sent to the lower layer device, so that the lower layer device creates an instance for the first virtual network unit, and sends the connection information to the lower layer device, so that the lower layer device is in the first virtual network. Establishing a connection between the units or establishing a connection between the first virtual network unit and other virtual network units;
    所述下层基础设备管理模块,还用于将所述网络运维模块获取的所述路径信息发送至所述下层设备,以便于所述下层设备存储所述路径信息。The underlying device management module is further configured to send the path information acquired by the network operation and maintenance module to the lower layer device, so that the lower layer device stores the path information.
  12. 根据权利要求11所述的设备,其特征在于,所述下层基础设备管理模块将路径信息发送至所述下层设备具体包括:The device according to claim 11, wherein the sending, by the underlying base device management module, the path information to the lower layer device specifically includes:
    所述下层基础设备管理模块还用于将所述路径信息发送至所述下层设备的网络设备,以便于所述下层设备的所述网络设备存储所述路径信息;或者,The lower layer device management module is further configured to send the path information to the network device of the lower layer device, so that the network device of the lower layer device stores the path information; or
    所述下层基础设备管理模块还用于将所述路径信息发送至所述虚拟网络单元中每一个虚拟网络单元,以便于所述虚拟网络单元中每一个虚拟网络单元存储所述路径信息。The underlying infrastructure management module is further configured to send the path information to each virtual network unit in the virtual network unit, so that each virtual network unit in the virtual network unit stores the path information.
  13. 根据权利要求11所述的设备,其特征在于,The device according to claim 11 wherein:
    所述虚拟网络单元中每一个虚拟网络单元的资源需求信息包括所述资源需求信息对应的虚拟网络单元的处理速度信息以及所述虚拟网络单元的存储 空间信息中的至少一个;The resource requirement information of each virtual network unit in the virtual network unit includes processing speed information of the virtual network unit corresponding to the resource requirement information and storage of the virtual network unit At least one of the spatial information;
    所述连接信息包括所述虚拟网络单元之间的连接类型以及带宽信息中的至少一个。The connection information includes at least one of a connection type and bandwidth information between the virtual network units.
  14. 根据权利要求11所述的设备,其特征在于,The device according to claim 11 wherein:
    所述网络管理设备还包括数据库模块,用于存储状态信息;The network management device further includes a database module for storing state information;
    所述网络运维模块,还用于在所述数据库模块已经存储的所述状态信息中查询所述虚拟网络单元中的每一个虚拟网络单元是否已经创建实例,如果所述状态信息指示所述状态信息对应的虚拟网络单元没有创建实例,则将所述虚拟网络单元确定为需要创建实例的虚拟网络单元。The network operation and maintenance module is further configured to query, in the status information that has been stored by the database module, whether each virtual network unit in the virtual network unit has created an instance, if the status information indicates the status If the virtual network unit corresponding to the information does not create an instance, the virtual network unit is determined to be a virtual network unit that needs to create an instance.
  15. 根据权利要求11所述的设备,其特征在于,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The device according to claim 11, wherein the path information further comprises a policy of selecting a path, the policy comprising selecting a condition of a transmission path.
  16. 根据权利要求15所述的设备,其特征在于,选择传输路径的条件包括根据数据的业务类型选择传输路径。The apparatus according to claim 15, wherein the condition for selecting the transmission path comprises selecting the transmission path according to the type of service of the data.
  17. 一种下层设备,其特征在于,包括:A lower layer device, comprising:
    接收模块,用于接收网络管理设备发送的需要创建实例的虚拟网络单元的资源需求信息,并将所述资源需求信息传输至实例创建模块,其中,所述资源需求信息用于指示为一个虚拟网络单元创建实例所需要的资源;a receiving module, configured to receive resource requirement information of a virtual network unit that needs to be created by the network management device, and transmit the resource requirement information to an instance creation module, where the resource requirement information is used to indicate that the virtual network is a virtual network The resources required for the unit to create an instance;
    所述实例创建模块,用于根据所述资源需求信息为所述需要创建实例的虚拟网络单元创建实例,其中,所述需要创建实例的虚拟网络单元为所述网络管理设备确定的在虚拟网络单元中需要创建实例的虚拟网络单元;The instance creation module is configured to create an instance for the virtual network unit that needs to create an instance according to the resource requirement information, where the virtual network unit that needs to create an instance determines the virtual network unit determined by the network management device The virtual network unit in which the instance needs to be created;
    所述接收模块,还用于接收所述网络管理设备发送的连接信息,并将所述连接信息传输至所述连接建立模块,其中,所述连接信息用于指示所述虚拟网 络单元之间的连接关系;The receiving module is further configured to receive connection information sent by the network management device, and transmit the connection information to the connection establishment module, where the connection information is used to indicate the virtual network Connection relationship between network elements;
    连接建立模块,用于根据所述连接信息在所述需要创建实例的虚拟网络单元之间建立连接,或者在所述需要创建实例的虚拟网络单元与其它虚拟网络单元之间建立连接;a connection establishing module, configured to establish a connection between the virtual network units that need to create an instance according to the connection information, or establish a connection between the virtual network unit that needs to create an instance and other virtual network units;
    所述接收模块,还用于接收所述网络管理设备发送的路径信息,所述路径信息用于指示数据在所述虚拟网络单元之间的传输路径;The receiving module is further configured to receive path information sent by the network management device, where the path information is used to indicate a transmission path of data between the virtual network units;
    存储模块,用于存储所述路径信息。a storage module, configured to store the path information.
  18. 根据权利要求17所述的设备,其特征在于,所述路径信息还包括选择路径的策略,所述策略包括选择一条传输路径的条件。The device according to claim 17, wherein the path information further comprises a policy of selecting a path, the policy comprising selecting a condition of a transmission path.
  19. 根据权利要求18所述的设备,其特征在于,The device of claim 18, wherein
    所述接收模块,还用于接收数据;The receiving module is further configured to receive data;
    所述下层设备还包括路径选择模块和转发模块,The lower layer device further includes a path selection module and a forwarding module.
    所述路径选择模块,用于根据存储的所述路径信息确定所述数据的传输路径为第一传输路径,根据所述路径信息确定的数据的传输路径确定所述数据传输的下一个虚拟网络单元的标识;The path selection module is configured to determine, according to the stored path information, that the transmission path of the data is a first transmission path, and determine a next virtual network unit of the data transmission according to the transmission path of the data determined by the path information. Identification
    所述转发模块,用于根据所述下一个虚拟网络单元的标识将所述数据传输至所述下一个虚拟网络单元。The forwarding module is configured to transmit the data to the next virtual network unit according to the identifier of the next virtual network unit.
  20. 根据权利要求18所述的设备,其特征在于,选择传输路径的条件包括根据数据的业务类型选择传输路径。 The apparatus of claim 18, wherein the condition of selecting the transmission path comprises selecting a transmission path based on a type of service of the data.
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