WO2016015559A1 - Bearer resource allocation method, apparatus and system for cloudified data center network - Google Patents

Bearer resource allocation method, apparatus and system for cloudified data center network Download PDF

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Publication number
WO2016015559A1
WO2016015559A1 PCT/CN2015/084003 CN2015084003W WO2016015559A1 WO 2016015559 A1 WO2016015559 A1 WO 2016015559A1 CN 2015084003 W CN2015084003 W CN 2015084003W WO 2016015559 A1 WO2016015559 A1 WO 2016015559A1
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node
information
communication path
local
address information
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PCT/CN2015/084003
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French (fr)
Chinese (zh)
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余庆华
杨欣华
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华为技术有限公司
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Priority to CN201410373067.XA priority Critical patent/CN104202264B/en
Priority to CN201410373067.X priority
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Publication of WO2016015559A1 publication Critical patent/WO2016015559A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • H04L29/08Transmission control procedure, e.g. data link level control procedure

Abstract

Embodiments of the present invention provide a bearer resource allocation method, apparatus and system for a cloudified data center network. The method comprises: an SDN controller receives a communication path request sent by a cloud platform management apparatus, wherein the communication path request carries address information of a local node, address information of a peer node, and information of a bandwidth demand and information of a QoS demand between the local node and the peer node, and the cloud platform management apparatus, the local node and the peer node are located in a cloudified data center network where the SDN controller is located; allocate, according to the address information of the local node, the address information of the peer node, the information of the bandwidth demand and the information of the QoS demand, a communication path satisfying the bandwidth demand and the QoS demand to the local node and the peer node from network resources managed by the SDN controller; and send a forwarding flow table of the communication path to a forwarding plane device of the cloudified data center network so as to establish a forwarding plane communication path between the local node and the peer node through the forwarding plane device.

Description

Method, device and system for carrying resource allocation of cloud data center network Technical field

Embodiments of the present invention relate to the field of communications, and more specifically, to a method, an apparatus, and a system for allocating bearer resources of a clouded data center network.

Background technique

The telecom network element cloudization refers to deploying traditional telecom network elements and applications based on physical chassis and boards to a general data center server in the form of software VMs (virtual machines) to provide various telecommunication services. The deployment method is called Network Functions Virtualization (NFV) in the industry. In a clouded data center, telecom network elements and applications exist in the form of VMs (virtual machines) rather than in the form of single boards on traditional telecommunication hardware. Communication between network elements and network elements, and between different business processes within the same network element, is represented as communication between VMs.

According to the characteristics of data center cloud computing, VMs can be deployed and migrated arbitrarily, which means that the traffic between VMs is different depending on the VM deployment location. Traffic may pass through Top of Rack (TOR) and row aggregation switches. (End of Row, EOR) and the core switch, or only through TOR + EOR, or only through the TOR, or traffic only inside the server.

How to improve the utilization efficiency of the bearer resources (link resources) and provide suitable bearer resources (link resources) for the communication of the VM is a technical problem to be solved by the present invention.

Summary of the invention

The embodiment of the invention provides a method, a device and a system for allocating a bearer resource of a clouded data center network, which can ensure the service requirement of the communication between the VM and the peer node in the cloud data center network, and improve the utilization of the bearer resource to a certain extent. effectiveness.

In a first aspect, a method for allocating a bearer resource of a cloud data center network is provided. The method includes: receiving, by the SDN controller, a communication path request sent by the cloud platform management device, where the communication path request carries address information of the local node The address information of the peer node, the bandwidth requirement information and the QoS requirement information between the local node and the peer node, the local node is a VM or a VNF, the cloud platform management device, the local node, and the pair The end node is located in the cloud data center network where the SDN controller is located; the SDN controller is based on the address information of the local node, the peer end section The address information of the point, the bandwidth requirement information, and the QoS requirement information, the communication path that meets the bandwidth requirement and the QoS requirement is allocated to the local node and the opposite end node from the network resource managed by the SDN controller; the SDN controller Transmitting a forwarding flow table of the communication path to the forwarding plane device of the cloud data center network, so as to establish a forwarding plane communication path between the local end node and the opposite end node by using the forwarding plane device.

With reference to the first aspect, in a first possible implementation, the communication path request further carries the VM migration event indication information and the address information of the local node before the migration, and the SDN controller determines, according to the address information of the local node, The address information of the peer node, the bandwidth requirement information, and the QoS requirement information are specifically implemented by the local node and the peer node by using the network resource managed by the SDN controller to allocate a communication path that meets the bandwidth requirement and the QoS requirement. The SDN controller according to the VM migration event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information, from the network resources managed by the SDN controller The local end node and the opposite end node allocate a post-migration communication path that meets the bandwidth requirement and the QoS requirement, and cancel the local end node and the pair according to the address information before the local node migration and the address information of the opposite end node. The communication path before the end node is migrated.

With reference to the first aspect, in a second possible implementation, the communication path request further carries bandwidth abnormal event indication information, and the SDN controller is configured according to address information of the local node, address information of the opposite node, and the bandwidth. The requirement information and the QoS requirement information, the communication path allocated by the local node and the opposite end node to meet the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller is specifically implemented as follows: the SDN controller is abnormal according to the bandwidth The event indication information, the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information are re-from the network resources managed by the SDN controller to the local node and the peer end. The nodes allocate communication paths that meet bandwidth requirements and QoS requirements.

With reference to the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in a fourth possible implementation, the communication node The address information includes at least one of the following: an identity ID of the communication node, a media access control MAC address of the communication node, an internet protocol IP address of the communication node, an ID of a server where the communication node is located, and a local area network switch LSW where the communication node is located The ID, the MAC address of the LSW where the communication node is located, and the IP address of the LSW where the communication node is located; wherein the communication node is the local node or the opposite node.

Combining the first aspect or the first possible implementation of the first aspect to the third of the first aspect In a fourth possible implementation manner, the bandwidth requirement information between the local end node and the opposite end node includes at least one of the following: the local end node and the opposite end The minimum guaranteed bandwidth between nodes, the maximum available bandwidth between the local node and the correspondent node.

With reference to the first aspect, or the first possible implementation of the first aspect, to any one of the possible implementations of the fourth possible implementation of the first aspect, in a fifth possible implementation manner, the local end The QoS requirement information between the node and the peer node includes at least one of the following: a maximum allowed delay between the local node and the opposite node, a maximum allowed jitter between the local node and the opposite node, and the The maximum allowed packet loss rate between the end node and the peer node.

In a second aspect, a method for allocating a bearer resource of a cloud data center network is provided. The method includes: the cloud platform management device acquires address information of the local node, address information of the peer node, the local node and the peer end The bandwidth requirement information and the service quality QoS requirement information between the nodes, wherein the local node is a VM or a VNF; the cloud platform management device sends a communication path request to the SDN controller, where the communication path request carries the local node The address information, the address information of the peer node, the bandwidth requirement information and the QoS requirement information between the local node and the correspondent node, the cloud platform management device, the local node, and the peer node are located in the SDN controller In the cloud data center network, the communication path request is used to request the SDN controller to obtain the address information of the local end node, the address information of the opposite end node, the bandwidth requirement information, and the QoS requirement information from the SDN. The network resource managed by the controller allocates a communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite node.

With reference to the second aspect, in a first possible implementation, the specific implementation is as follows: the communication path request is used to request that a new communication path be allocated between the local end node and the opposite end node. The communication path request further carries the VM migration event indication information and the address information before the local node migration, and the communication path request is used to request that the local node and the opposite node re-allocate the communication path after the migration, and cancel the migration. The communication path between the local node and the opposite node.

With reference to the second aspect, in a second possible implementation, the specific implementation is as follows: the communication path request further carries bandwidth abnormal event indication information, where the communication path request is used to request the local node and the opposite end node after the migration Redistribute communication paths that meet bandwidth requirements and QoS requirements.

In a third aspect, a software-defined network controller is provided. The software-defined network controller includes: a receiving unit, configured to receive a communication path request sent by a cloud platform management device, where the communication path request carries an address of the local node Information, address information of the peer node, bandwidth requirement information and QoS requirement information between the local node and the correspondent node, where the local node is a VM or a VNF, the cloud platform management device, the local node, and the peer node are located in the cloud data center network; the path allocation unit is configured to: according to address information of the local node, address information of the peer node, The bandwidth requirement information and the QoS requirement information, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller; and the sending unit is configured to send the cloudized data to the The forwarding plane device of the central network sends a forwarding flow table of the communication path to establish a forwarding plane communication path between the local node and the opposite node by using the forwarding plane device.

With reference to the third aspect, in a first possible implementation, the communication path request further carries the VM migration event indication information and the address information of the local node before the migration, where the path allocation unit is specifically configured to: according to the VM migration event The indication information, the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information, where the local node and the peer end are the network resources managed by the software-defined network controller. The node allocates a post-migration communication path that meets the bandwidth requirement and the QoS requirement, and cancels the communication path between the local node and the peer node before the migration according to the address information before the local node migration and the address information of the opposite node.

With reference to the third aspect, in a first possible implementation, the communication path request further carries the bandwidth abnormal event indication information, where the path allocation unit is specifically configured to: according to the bandwidth abnormal event indication information, address information of the local end node And the address information of the peer node, the bandwidth requirement information, and the QoS requirement information, and re-assigning the communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite node from the network resource managed by the SDN controller. .

In a fourth aspect, a cloud platform management apparatus is provided. The cloud platform management apparatus includes: an acquiring unit, configured to acquire address information of a local node, address information of a peer node, and the local node and the peer node The bandwidth requirement information and the QoS requirement information, wherein the local node is a VM or a VNF; and the generating unit is configured to generate a communication path request, where the communication path request carries the address information of the local node and the address of the opposite node The information, the bandwidth requirement information and the service quality QoS requirement information between the local node and the peer node, and the sending unit, configured to send the communication path request to the SDN controller, where the cloud platform management device, the local end The node and the peer node are located in the cloud data center network where the SDN controller is located, and the communication path request is used to request the SDN controller to use the address information of the local node, the address information of the peer node, and the bandwidth. The demand information and the QoS requirement information, the local node and the peer node are allocated bandwidth requirements and Qo from the network resources managed by the SDN controller. The communication path for s demand.

In conjunction with the fourth aspect, in a first possible implementation, the communication path request is further carried The VM migration event indication information and the address information of the local node before migration, the communication path request is used to request that the local node and the opposite node re-allocate the communication path after the migration, and cancel the local node before the migration The communication path between the peer nodes.

With reference to the fourth aspect, in a second possible implementation manner, the communication path request further carries bandwidth abnormal event indication information, where the communication path request is used to request that the local end node and the opposite end node re-allocate the matching bandwidth after the migration Communication path for demand and QoS requirements.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, or the second possible implementation manner of the fourth aspect, in a third possible implementation manner, the cloud platform management device is a virtual machine VM control management The device, the virtual network function management VNFM device, the system unified coordination device or the management coordination MANO device.

In a fifth aspect, a data center system is provided, comprising: software-defined network control in a third aspect or a first possible implementation manner of the third aspect or a second possible implementation manner of the third aspect And the cloud platform management apparatus in the fourth aspect or the first possible implementation manner of the fourth aspect or the second possible implementation manner of the fourth aspect or the third possible implementation manner of the fourth aspect.

Based on the above technical solution, the method and device for allocating bearer resources of the cloud data center network according to the embodiment of the present invention, by using the address information of the local node, the address information of the peer node, the local node and the pair according to the cloud platform management device The bandwidth requirement information and the QoS requirement information between the end nodes are allocated to the communication path between the local node and the opposite node, which can ensure the service requirement of the communication between the VM and the peer node in the cloud data center network, and to a certain extent Improve the utilization efficiency of bearer resources.

DRAWINGS

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.

FIG. 1 is a schematic diagram of a data center network architecture according to an embodiment of the present invention.

2 is a schematic diagram of an SDN network architecture according to an embodiment of the present invention.

3 is a flow chart of a method for allocating bearer resources of a clouded data center network.

FIG. 4 is an interaction flowchart of a cloud data center network bearer resource allocation method.

FIG. 5 is another interaction flowchart of a cloud data center network bearer resource allocation method.

FIG. 6 is another flow chart of interaction of the cloud data center network bearer resource allocation method.

FIG. 7 is still another flow chart of the cloud data center network bearer resource allocation method.

8 is a flow chart of a method for allocating bearer resources of a clouded data center network.

FIG. 9 is a schematic structural diagram of an SDN controller according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a cloud platform management apparatus according to an embodiment of the present invention.

FIG. 11 is another schematic structural diagram of an SDN controller according to an embodiment of the present invention.

FIG. 12 is another schematic structural diagram of a cloud platform management apparatus according to an embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a data center system according to an embodiment of the present invention.

detailed description

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 a part of the embodiments of the present invention, but 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.

In order to facilitate the understanding of the embodiments of the present invention, several elements introduced in the description of the embodiments of the present invention are first described herein.

Software Defined Network (SDN): A new network innovation architecture for Emulex networks. By separating the control plane of the network device from the data plane, flexible control of network traffic is achieved.

The SDN controller, the SDN controller device, stores the network topology information of the SDN. The SDN controller can discover the network topology consisting of network switches, including software switches on the hypervisor and hardware switches in the data center cabinet. The SDN controller converts the network programming mode from a distributed mode (a network device that communicates with each other to a forwarding path) to a centralized mode. The SDN controller can use OpenFlow to program the forwarding table of the network switch.

FIG. 1 is a schematic diagram of a data center network architecture according to an embodiment of the present invention. In the scenario shown in FIG. 1, the telecommunication network element and the application exist in the form of a VM (virtual machine), instead of being in the form of a single board on the traditional telecommunication hardware. Communication between network elements and network elements, and between different business processes within the same network element, is represented as communication between VMs. As shown in Figure 1, network elements 1, 2, and 3 are deployed on servers in the data center. Each network element contains multiple VMs, which are distributed on multiple servers. Data center services are interconnected by switches of different levels such as TOR, EOR, and core switches to provide communication channels. Service gateways, including firewalls, load balancers, etc. Hang on the core switch. The double-arrow solid line in the figure indicates the communication between the VMs of the network elements, and the double-arrow dotted line indicates the communication between different VMs in the same network element.

According to the characteristics of data center cloud computing, VMs can be deployed and migrated arbitrarily, which means that the traffic between VMs depends on the location of VM deployment. Traffic may pass through TOR, EOR and core switches, or may only pass TOR+EOR. , or only through the TOR, or traffic only inside the server. In order to meet the telecom service SLA standard, IP communication between these VMs must meet certain QoS requirements.

It should be understood that FIG. 1 is only an application scenario of an embodiment of the present invention. In practical applications, there may be multiple variations. For example, the VM is replaced by a VNF, and so on, and a plurality of network nodes may be added or deleted in the network architecture shown in FIG. 1. The embodiment of the present invention is not limited herein.

2 is a schematic diagram of an SDN network architecture according to an embodiment of the present invention. In the SDN architecture, the network control plane is implemented in the SDN controller (SDN Controller). The network forwarding plane is implemented on the forwarding device at the infrastructure layer. The forwarding device is only responsible for packet forwarding and is not responsible for the calculation and maintenance of the forwarding path. The specific forwarding path of each IP flow on the network is controlled by the SDN Controller, and is sent to the forwarding layer device through a control data plane interface protocol (for example, Openflow protocol, etc.), and the communication path of each IP flow can be performed by the SDN Controller. Flexible control.

3 is a flow chart of a method for allocating bearer resources of a clouded data center network. The method of Figure 3 is performed by an SDN controller.

301. The SDN controller receives a communication path request sent by the cloud platform management apparatus.

The communication path request carries the address information of the local node, the address information of the peer node, the bandwidth requirement information and the QoS requirement information between the local node and the opposite node, and the local node is a virtual machine (Virtual Machine, The VM platform or the virtualized network function (VNF), the cloud platform management device, the local node, and the peer node are located in the cloud data center network where the SDN controller is located.

It should be understood that, in the embodiment of the present invention, the peer node may be a VM, a physical machine, or a VNF.

It should be understood that, in the embodiment of the present invention, the cloud platform management device may be a VM control management device, a virtualized network function manager (VNFM) device, a system unified coordination device, or a management and orchestration (MANO) device.

It should be understood that, in the embodiment of the present invention, the address information may include not only direct address information, such as a Media Access Control (MAC) address, an Internet Protocol (Internet Protocol, IP) address, etc., may also include indirect address information, such as identification information. Specifically, the address information of the communication node includes at least one of the following: an identity of the communication node (Identity, ID), a MAC address of the communication node, an IP address of the communication node, an ID of a server where the communication node is located, and the communication The ID of the LAN switch (LSW) where the node is located, the MAC address of the LSW where the communication node is located, and the IP address of the LSW where the communication node is located. The communication node is the local node or the peer node.

It should be understood that the bandwidth requirement information between the local end node and the opposite end node includes at least one of the following: a minimum guaranteed bandwidth between the local end node and the opposite end node, and a maximum available between the local end node and the opposite end node. bandwidth.

It should be understood that the QoS requirement information between the local end node and the opposite end node includes at least one of the following: a maximum allowable delay between the local end node and the opposite end node, and between the local end node and the opposite end node. Maximum allowable jitter, the maximum allowed packet loss rate between the local node and the correspondent node.

302. The SDN controller, according to the address information of the local node, the address information of the peer node, the bandwidth requirement information, and the QoS requirement information, is the local node and the network resource managed by the SDN controller. The peer node allocates a communication path that meets the bandwidth requirement and the QoS requirement.

Specifically, the SDN controller stores network topology information, available bandwidth resource information, and QoS information of each forwarding path of the clouded data center network. The SDN controller may combine the network topology information, the available bandwidth resource information, and the forwarding of the cloud data center network according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. The QoS information of the path, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller.

303. The SDN controller sends a forwarding flow table of the communication path to the forwarding plane device of the cloud data center network, to establish a forwarding plane communication path between the local node and the opposite node by using the forwarding plane device.

In the embodiment of the present invention, the local node is allocated according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information, which are sent by the cloud platform management device. The communication path between the peer node and the peer node can ensure the service requirement of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resource to a certain extent.

It should be understood that the method of the embodiment of the present invention can be applied to various application scenarios.

Optionally, as an embodiment, the communication path request may be used to request the SDN controller as The local node and the opposite node establish a new communication path. In an application scenario of the embodiment of the present invention, the local node may be a newly deployed VM, and is ready to establish communication with the peer node. In another application scenario of the embodiment of the present invention, the local end node and the opposite end node have established a communication path, and a new communication path is needed due to service requirements.

Optionally, as another embodiment, the communication path request further carries VM migration event indication information and address information before the local node migration. At this time, the step 302 is specifically implemented as follows: the SDN controller according to the VM migration event indication information, the address information of the local end node, the address information of the opposite end node, the bandwidth requirement information, and the QoS requirement information, from the SDN The network resource managed by the controller allocates a post-migration communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite end node, and according to the address information before the local node migration and the address information of the opposite end node, The communication path between the local node and the peer node before migration is cancelled. In the embodiment of the present invention, the SDN controller re-allocates the communication path for the migrated VM, so that the service carried by the VM can be migrated without interrupting the service communication, thereby ensuring the uninterrupted operation of the service and improving the cloudization to a certain extent. The performance of the data center system.

Optionally, as another embodiment, the communication path request further carries bandwidth abnormal event indication information. At this time, the step 302 is specifically implemented as follows: the SDN controller re-reports the information according to the bandwidth abnormal event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. The network resource managed by the SDN controller allocates a communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite node. In the embodiment of the present invention, the SDN controller re-allocates the communication path for the VM whose bandwidth is abnormal, and can dynamically adjust the forwarding path of the forwarding plane when the QoS requirement of the VM service changes, thereby ensuring the QoS of the VM communication, thereby enabling The services carried by the VM can be guaranteed to improve the performance of the cloud data center system to some extent.

Hereinafter, the method of the embodiment of the present invention will be further described in conjunction with specific embodiments.

FIG. 4 is an interaction flowchart of a cloud data center network bearer resource allocation method. In the embodiment of the present invention, the cloud platform management device is a VM control management device, such as a VM Manager, and the like.

401. The VM control management device deploys a new VM.

When the service requires a VM, it will apply to the VM management module, and the VM management module will deploy a suitable VM according to the needs of the business.

The VM control management device manages the bandwidth requirements and QoS requirements of each VM for external communication. When deploying a new VM, the VM Control Manager needs to establish an external forwarding path for the new VM. This At the same time, the VM control management device needs to acquire the bandwidth requirement and QoS requirement of the new VM for external communication.

402. The VM control management device sends a communication path request to the SDN controller.

The VM control management device sends a communication path request to the SDN controller to establish a communication path for the communication request of the new VM and its opposite node. The communication path request may carry the address information of the local node, the address information of the opposite node, the bandwidth requirement information of the communication between the local node and the opposite node, and the communication between the local node and the opposite node. QoS demand information, etc. In addition, the local node is a new VM to be deployed.

The VM control management device, the local node, and the opposite node are all located in the cloud data center, and are nodes on the SDN network of the cloud data center. The SDN controller is a controller device of the cloud data center, and can store network topology information, available bandwidth resource information, and QoS information of each forwarding path in the cloud data center.

Specifically, the address information of the local node may be the identifier information of the local node, such as the ID, MAC address, and IP address of the local node, or the access address information of the local node, for example, where the local node is located. The server identification information includes the server ID where the local node is located, the access LSW ID of the local node, and the MAC address of the access LSW of the local node. The address information of the peer node may be the ID, MAC address, IP address, etc. of the peer node, or the access address information of the peer node, for example, the server identifier information of the peer node, including the server where the peer node is located. ID, the access LSW ID of the peer node, and the MAC address of the peer node's access LSW.

Specifically, the bandwidth requirement information of the local node and the opposite node may include at least one of a minimum guaranteed bandwidth and a maximum available bandwidth of the local node and the opposite node.

Specifically, the QoS requirement information of the local node and the opposite node may include at least one of an allowable maximum value of the delay, an allowable maximum value of the lost packet, and an allowable maximum value of the jitter.

For a specific example, the communication path request may carry the following content: local node (new VM) MAC address + peer node MAC address + minimum guaranteed bandwidth + maximum available bandwidth + maximum allowed delay + maximum allowed jitter + maximum allowed packet loss rate. For example, "28-6e-d4-88-c4-f8" + "28-6e-d4-88-c5-03" + 10 Mbps + 100 Mbps + 50 ms + 5 ms + 0.01. It should be understood that the example of the communication path request in the embodiment of the present invention is merely an example, and the embodiment of the present invention is not limited thereto.

403. The SDN controller determines a forwarding path.

After receiving the communication path request, the SDN controller can determine the forwarding path between the local node and the opposite node according to its own forwarding path algorithm. A possible forwarding path calculation algorithm such as under:

The SDN controller maintains the topology of the entire data center IP network and the available bandwidth resource data, and collects the QoS data of each forwarding path according to the historical traffic statistics. When the SDN controller receives the bandwidth requirements and QoS requirements required for the local node and the peer node MAC address of the new communication path sent by the VM control management device, the local node and the peer node to communicate, the bandwidth resource can be maintained. And the QoS database, select a forwarding path that satisfies the condition, and modify the original available bandwidth resource data.

404. The SDN controller sends a forwarding flow table to the forwarding plane device, and carries the forwarding path information.

After determining the forwarding path, the SDN controller can send a forwarding flow table carrying the forwarding path to the forwarding plane device by using a control data plane interface (for example, the Openflow protocol).

405. The forwarding plane device establishes a forwarding path.

After receiving the forwarding flow table carrying the forwarding path, the forwarding plane device can establish a bearer network IP forwarding path according to the forwarding flow table.

406. The forwarding plane device sends a path establishment success indication information to the SDN controller.

After the forwarding plane device establishes the forwarding path, the path establishment success indication information may be sent to the SDN controller.

407. The SDN controller sends the feedback information of the communication path request to the VM control management apparatus.

The SDN controller may send feedback information of the communication path request to the VM control management device to indicate that the communication path is successfully established.

408, the VM control management device completes the deployment.

After receiving the feedback information of the forwarding path establishment success feedback from the SDN controller, the VM control management device can confirm that the forwarding path of the new VM is established. At this point, you can complete the deployment of the new VM.

In the embodiment of the present invention, the newly deployed information is obtained by using the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information, which are sent by the VM control management device. The VM and the peer node allocate communication paths, which can ensure the service requirements of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resources to a certain extent.

It should be understood that, in the embodiment of the present invention, the cloud platform management device may also be other devices, such as a VNFM, a MANO, or a system unified coordination device. When the cloud platform management device changes, the communication node may be different. For example, when the cloud platform management device is VNFM, the VM can be used. VNF is replaced. Of course, other similar embodiments are also possible, and the embodiments of the present invention are not described herein again.

FIG. 5 is another interaction flowchart of a cloud data center network bearer resource allocation method. In the embodiment of the present invention, the cloud platform management device is a VM control management device.

501. The VM control management device monitors that the VM has a migration operation.

In a data center cloud environment, the VM migration process is controlled by the VM management platform. The VM management platform manages the bandwidth and QoS requirements for VM deployment while also managing the bandwidth and QoS requirements required for VM migration.

502. The VM control management device sends a communication path request to the SDN controller.

When the VM initiates the migration operation, the VM control management device sends a communication path request to the SDN controller requesting that the communication path between the local node (post-migration VM) and the correspondent node is updated. The communication path request may carry the VM migration event identifier, the address information before the local node migration (the address information before the VM migration), the address information of the local node (the address information after the VM migration), and the peer node. Address information, bandwidth requirement information, and QoS requirements information. For the specific implementation of the address information, the bandwidth requirement information, and the QoS requirement information, reference may be made to the step 402 of FIG. 4, which is not described herein again.

The VM control management device, the local node, and the opposite node are all located in the cloud data center, and are nodes on the SDN network of the cloud data center. The SDN controller is a controller device of the cloud data center, and can store network topology information, available bandwidth resource information, and QoS information of each forwarding path in the cloud data center.

Because the VM migration is equivalent to a MAC drift event, the MAC drift event is usually equivalent. In general, this is an abnormal event (a security attack may occur with MAC spoofing), and the traditional data communication device will report it. A MAC drift alarm event. To prevent the VM from being migrated, the IP network also reports such unnecessary abnormal alarms. The VM control management device will inform the SDN controller of the VM migration event, indicating that this is a normal MAC address migration, and does not need to report the MAC drift alarm and request After the VM is migrated, a forwarding path is recalculated and sent to the forwarding plane device.

For a specific example, the communication path request may carry the following contents: VM migration event identifier + local node pre-migration MAC address (pre-VM migration MAC address) + local node MAC address (VM migration MAC address) + peer node MAC Address + Minimum Guaranteed Bandwidth + Maximum Available Bandwidth + Maximum Allowable Delay + Maximum Allowable Jitter + Maximum Allowable Packet Loss Rate. For example, "01" + "28-6e-d4-88-c4-22" + "28-6e-d4-88-c4-f8" + "28-6e-d4-88-c5-03" + 10Mbps +100Mbps+50ms+5ms+0.01, where “01” is the VM migration event identifier. Of course, in the actual application, other information may be used as the VM migration event identifier, which is not limited herein.

It should be understood that the example of the communication path request in the embodiment of the present invention is merely an example, and the embodiment of the present invention is not limited thereto.

503. The SDN controller determines a forwarding path.

After receiving the communication path request, the SDN controller can determine the forwarding path between the local node (the migrated VM) and the opposite node according to its own forwarding path algorithm. A possible forwarding path calculation algorithm is as follows:

The SDN controller maintains the topology of the entire data center IP network and the available bandwidth resource data, and collects the QoS data of each forwarding path according to the historical traffic statistics. After receiving the communication path request sent by the VM control management device, the SDN controller may confirm that the VM has a migration event, block the MAC drift alarm, and select a forwarding path that satisfies the condition from the maintained bandwidth resource and the QoS database, and release the VM. The communication path assigned before migration and modify the original available bandwidth resource data. The communication path request may carry the VM migration event notification, the local node pre-migration MAC address (the VM pre-migration MAC address), the local node MAC address (the VM migration MAC address), the peer node MAC address, and the communication. Required bandwidth requirements and QoS requirements

504. The SDN controller sends a forwarding flow table to the forwarding plane device, and carries the forwarding path information.

Specifically, the forwarding flow table may carry a newly allocated communication path. Of course, the forwarding flow table may also carry the communication path information before the migration of the peer node.

505. The forwarding plane device establishes a forwarding path.

The forwarding plane device establishes a communication path for the local node (the migrated VM) and its opposite node, and releases the communication path allocated before the local node (VM) migrates.

506. The forwarding plane device sends a path establishment success indication information to the SDN controller.

507. The SDN controller sends the feedback information of the communication path request to the VM control management device.

The method of the step 506 and the step 507 is similar to the steps 406 and 407 of FIG. 4, and details are not described herein again.

508. The VM control management device completes the migration operation of the VM.

After the communication path between the local node VM and the peer node is re-established successfully, the VM migration operation is completed.

In the embodiment of the present invention, the address information of the local node sent by the VM control management device is used. The address information of the peer node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information are the communication paths between the migrated VM and the peer node, and can not terminate the service service. To ensure the service requirements of the communication between the VM and the peer node in the cloud data center network, and to improve the utilization efficiency of the bearer resources to a certain extent.

It should be understood that, in the embodiment of the present invention, the cloud platform management device may also be other devices, such as a VNFM, a MANO, or a system unified coordination device. When the cloud platform management device changes, the communication node may be different. For example, when the cloud platform management device is a VNFM, the VM can be replaced with a VNF. Of course, other similar embodiments are also possible, and the embodiments of the present invention are not described herein again.

FIG. 6 is another flow chart of interaction of the cloud data center network bearer resource allocation method. In the embodiment of the present invention, the cloud platform management device is MANO.

601, MANO monitors the VM to add an external communication link.

MANO manages the bandwidth requirements and QoS requirements of each VM for external communication.

In a clouded data center system, MANO can monitor changes in the service and configuration data of a running VM to determine whether the VM adds an external communication link.

602. The MANO sends a communication path request to the SDN controller.

When MANO monitors that the VM adds an external communication link, it can send a communication path request to the SDN controller to request a new communication path. The communication path request may carry the address information of the local node, the address information of the opposite node, the bandwidth requirement information of the communication between the local node and the opposite node, and the communication between the local node and the opposite node. QoS demand information, etc.

The MANO, the local node, and the peer node are all located in the cloud data center and are nodes on the SDN network of the cloud data center. The SDN controller is a controller device of the cloud data center, and can store network topology information, available bandwidth resource information, and QoS information of each forwarding path in the cloud data center.

603. The SDN controller determines a forwarding path.

604. The SDN controller sends a forwarding flow table to the forwarding plane device, and carries the forwarding path information.

605. The forwarding plane device establishes a forwarding path.

606. The forwarding plane device sends a path establishment success indication information to the SDN controller.

607. The SDN controller sends the feedback information of the communication path request to the MANO.

Steps 603-607 and steps 403-407 of FIG. 4 are not described herein again.

In the embodiment of the present invention, the address information of the local node sent by the MANO, the peer end The address information of the node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information, allocate a new communication path for the new communication between the VM and the peer node, and can ensure the cloud data center network. The service requirement of the VM to communicate with the peer node, and to some extent, improve the utilization efficiency of the bearer resource.

It should be understood that, in the embodiment of the present invention, the cloud platform management device may also be other devices, such as a VNFM, a VM control management device, or a system unified coordination device. When the cloud platform management device changes, the communication node may be different. For example, when the cloud platform management device is a VNFM, the VM can be replaced with a VNF. Of course, other similar embodiments are also possible, and the embodiments of the present invention are not described herein again.

FIG. 7 is still another flow chart of the cloud data center network bearer resource allocation method.

701, MANO monitors that the VM traffic change exceeds the threshold.

MANO manages the bandwidth requirements and QoS requirements of each VM for external communication.

In the data center cloud environment, the service model of the running VM changes abnormally for some reason, and the required bandwidth is sent to change greatly. The change exceeds the threshold. The original planned forwarding path may not meet the service requirements. . Specifically, the threshold may be an absolute bandwidth, such as 0.5M, or a relative bandwidth, such as 5%, and the like.

When the external communication traffic of the VM changes beyond the threshold, the VM reports the event to MANO and reports the current maximum traffic to MANO.

702. The MANO sends a communication path request to the SDN controller.

When the MANO receives the event notification that the communication traffic changes beyond the threshold and the current traffic maximum value, the MANO can send a communication path request to the SDN controller. The communication path request may carry the address information of the local node, the address information of the opposite node, the bandwidth requirement information of the communication between the local node and the opposite node, and the communication between the local node and the opposite node. QoS demand information, etc.

The MANO, the local node, and the peer node are all located in the cloud data center and are nodes on the SDN network of the cloud data center. The SDN controller is a controller device of the cloud data center, and can store network topology information, available bandwidth resource information, and QoS information of each forwarding path in the cloud data center.

703. The SDN controller determines a forwarding path.

The SDN controller can recalculate the forwarding path for the local node and the opposite node according to the communication path request sent by the MANO.

704. The SDN controller sends a forwarding flow table to the forwarding plane device, and carries the forwarding path information.

705. The forwarding plane device establishes a forwarding path.

706. The forwarding plane device sends a path establishment success indication information to the SDN controller.

707. The SDN controller sends a feedback of the communication path request to the MANO.

Steps 704-707 and steps 404-407 of FIG. 4 are not described herein again.

In the embodiment of the present invention, the local node and the pair can be obtained by using the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information. When the service data traffic between the end nodes changes greatly, a new communication path is allocated for the communication link between the local node and the opposite node, thereby ensuring communication between the VM and the peer node in the cloud data center network. Business needs, and to some extent improve the utilization efficiency of the carrying resources.

It should be understood that, in the embodiment of the present invention, the cloud platform management device may also be other devices, such as a VNFM, a VM control management device, or a system unified coordination device. When the cloud platform management device changes, the communication node may be different. For example, when the cloud platform management device is a VNFM, the VM can be replaced with a VNF. Of course, other similar embodiments are also possible, and the embodiments of the present invention are not described herein again.

FIG. 8 is a flowchart of a method for allocating bearer resources of a clouded data center network according to an embodiment of the present invention. The method of Figure 8 is performed by a cloud platform management device.

801. The cloud platform management device acquires address information of the local node and the opposite node, bandwidth requirement information and QoS requirement information between the local node and the opposite node.

The local node is a VM or a VNF.

It should be understood that, in the embodiment of the present invention, the address information may include not only direct address information, such as a Media Access Control (MAC) address, an Internet Protocol (IP) address, but also indirect address information, such as Identification information, etc. Specifically, the address information of the local node may be the identifier information of the local node, such as the ID, MAC address, and IP address of the local node, or the access address information of the local node, for example, where the local node is located. The server identification information includes the server ID where the local node is located, the access LSW ID of the local node, and the MAC address of the access LSW of the local node. The address information of the peer node may be the ID, MAC address, IP address, etc. of the peer node, or the access address information of the peer node, for example, the server identifier information of the peer node, including the server where the peer node is located. ID, the access LSW ID of the peer node, and the MAC address of the peer node's access LSW.

It should be understood that the bandwidth requirement information between the local end node and the opposite end node includes at least the following One: the minimum guaranteed bandwidth between the local end node and the opposite end node, and the maximum available bandwidth between the local end node and the opposite end node.

It should be understood that the QoS requirement information between the local end node and the opposite end node includes at least one of the following: a maximum allowable delay between the local end node and the opposite end node, and between the local end node and the opposite end node. Maximum allowable jitter, the maximum allowed packet loss rate between the local node and the correspondent node.

802. The cloud platform management device sends a communication path request to the SDN controller.

The communication path request carries the address information of the local node, the address information of the peer node, the bandwidth requirement information and the QoS requirement information between the local node and the correspondent node, and the cloud platform management device and the local end The node and the peer node are located in the cloud data center network where the SDN controller is located, and the communication path request is used to request the SDN controller to use the address information of the local node, the address information of the peer node, The bandwidth requirement information and the QoS requirement information, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller.

In the embodiment of the present invention, the SDN controller is requested to allocate the address information by sending the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information to the SDN controller. The communication path between the end node and the peer node can ensure the service requirement of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resource to a certain extent.

Optionally, as an embodiment, the communication path request is used to request to allocate a new communication path to the local node and the correspondent node.

Optionally, in another embodiment, the communication path request further carries the VM migration event indication information and the address information before the local node migration, where the communication path request is used to request the local node and the opposite end after the migration. The node reassigns the communication path and cancels the communication path between the local node and the opposite node before migration.

Optionally, in another embodiment, the communication path request further carries a bandwidth abnormal event indication information, where the communication path request is used to request that the local end node and the opposite end node re-allocate the communication that meets the bandwidth requirement and the QoS requirement after the migration. path.

In addition, the specific application of the method of the embodiment of the present invention may be referred to the method performed by the cloud platform management apparatus of the embodiment shown in FIG. 4 to FIG.

FIG. 9 is a schematic structural diagram of an SDN controller 900 according to an embodiment of the present invention. The SDN controller 900 can include:

The receiving unit 901 is configured to receive a communication path request sent by the cloud platform management device.

The communication path request carries the address information of the local node, the address information of the peer node, the bandwidth requirement information between the local node and the correspondent node, and the service quality QoS requirement information, where the local node is a VM or The VNF, the cloud platform management device, the local node, and the peer node are located in the cloud data center network.

The path allocation unit 902 is configured to: according to the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information, the local node and the network resource managed by the SDN controller are The peer node allocates a communication path that meets bandwidth requirements and QoS requirements.

The sending unit 903 is configured to send, to the forwarding plane device of the cloud data center network, a forwarding flow table of the communication path, to establish a forwarding plane communication path between the local node and the opposite node by using the forwarding plane device.

In the embodiment of the present invention, the SDN controller 900 passes the address information of the local node, the address information of the opposite node, the bandwidth requirement information and the QoS requirement information between the local node and the opposite node according to the cloud platform management device. The communication path between the local node and the peer node is allocated, which can ensure the service requirement of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resource to a certain extent.

Specifically, the SDN controller may further include a storage unit that stores network topology information, available bandwidth resource information, and QoS information of each forwarding path of the clouded data center network. The path allocation unit 902 can combine the network topology information, the available bandwidth resource information, and each of the cloud data center network according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. For the QoS information of the forwarding path, the local node and the opposite node are allocated a communication path that meets the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller.

Optionally, as another embodiment, the communication path request further carries VM migration event indication information and address information before the local node migration. At this time, the path allocation unit 902 is specifically configured to: according to the VM migration event indication information, address information of the local end node, address information of the opposite end node, the bandwidth requirement information, and the QoS requirement information, from the SDN controller. The managed network resource allocates the post-migration communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite end node, and cancels the location information according to the address information before the local node migration and the address information of the opposite end node. The communication path between the local node and the peer node before migration. In the embodiment of the present invention, The SDN controller 900 reallocates the communication path for the migrated VM, so that the service carried by the VM can be migrated without interrupting the service communication, ensuring the uninterrupted operation of the service, and improving the performance of the clouded data center system to a certain extent.

Optionally, as another embodiment, the communication path request further carries bandwidth abnormal event indication information. At this time, the path allocation unit 902 is specifically configured to: re-control from the SDN according to the bandwidth abnormal event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. In the network resource managed by the device, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement. In the embodiment of the present invention, the SDN controller 900 re-allocates the communication path for the VM whose bandwidth is abnormal, and can dynamically adjust the forwarding path of the forwarding plane when the QoS requirement of the VM service changes, thereby ensuring the Qos of the VM communication, and further The services carried by the VM can be guaranteed, and the performance of the clouded data center system is improved to some extent.

The SDN controller 900 can also perform the method of FIG. 3 and implement the specific functions of the SDN controller in the embodiments shown in FIG. 3 to FIG. 7. The embodiments of the present invention are not described herein again.

FIG. 10 is a schematic structural diagram of a cloud platform management apparatus 1000 according to an embodiment of the present invention. The cloud platform management device 1000 can include:

The obtaining unit 1001 is configured to obtain address information of the local node, address information of the peer node, bandwidth requirement information between the local node and the correspondent node, and service quality QoS requirement information.

The local node is a VM or a VNF.

The generating unit 1002 is configured to generate a communication path request.

The communication path request carries the address information of the local node, the address information of the peer node, the bandwidth requirement information between the local node and the correspondent node, and the service quality QoS requirement information.

The sending unit 1003 is configured to send the communication path request to the SDN controller.

The cloud platform management device 1000, the local node, and the peer node are located in a cloud data center network where the SDN controller is located, and the communication path request is used to request the SDN controller to obtain address information according to the local node. The address information of the peer node, the bandwidth requirement information, and the QoS requirement information, the communication path that meets the bandwidth requirement and the QoS requirement is allocated to the local node and the correspondent node from the network resources managed by the SDN controller.

In the embodiment of the present invention, the cloud platform management apparatus 1000 sends the address information of the local end node, the address information of the opposite end node, the bandwidth requirement information between the local end node and the opposite end node, and the QoS requirement information to the SDN controller. The SDN controller allocates a connection between the local node and the opposite node. The credit path can ensure the service requirements of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resources to a certain extent.

Optionally, as an embodiment, the communication path request is used to request to allocate a new communication path to the local node and the correspondent node.

Optionally, in another embodiment, the communication path request further carries the VM migration event indication information and the address information before the local node migration, where the communication path request is used to request the local node and the opposite end after the migration. The node reassigns the communication path and cancels the communication path between the local node and the opposite node before migration.

Optionally, in another embodiment, the communication path request further carries a bandwidth abnormal event indication information, where the communication path request is used to request that the local end node and the opposite end node re-allocate the communication that meets the bandwidth requirement and the QoS requirement after the migration. path.

In addition, the cloud platform management apparatus 1000 can also perform the method of FIG. 8 and implement the specific functions of the cloud platform management apparatus in the embodiments shown in FIG. 4 to FIG.

FIG. 11 is a schematic structural diagram of an SDN controller 1100 according to an embodiment of the present invention. The SDN controller 1100 can include a processor 1102, a memory 1104, and an IO channel 1101.

The IO channel 1101, the processor 1102, and the memory 1104 are interconnected by a bus 1105 system. The bus 1105 can be an ISA bus, a PCI bus, or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.

The memory 1104 is configured to store a program. In particular, the program can include program code, the program code including computer operating instructions. Memory 1104 can include read only memory and random access memory and provides instructions and data to processor 1102. Memory 1104 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.

The processor 1102 is configured to execute a program stored in the memory 1104, and is specifically configured to perform the following operations:

Receiving, by the IO channel 1101, a communication path request sent by the cloud platform management device, where the communication path request carries the address information of the local node, the address information of the opposite node, and the bandwidth requirement between the local node and the opposite node Information and service quality QoS requirement information, the local node is a VM or a VNF, and the cloud platform management device, the local node, and the peer node are located in a cloud data center network where the SDN controller is located;

According to the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information, the local node and the peer node are allocated a matching bandwidth from the network resources managed by the SDN controller. Communication path for demand and QoS requirements;

The forwarding flow table of the communication path is sent to the forwarding plane device of the cloud data center network through the IO channel 1101, so as to establish a forwarding plane communication path between the local node and the opposite node by using the forwarding plane device.

The method performed by the SDN controller disclosed in any of the embodiments of FIG. 3 to FIG. 7 of the present invention may be applied to the processor 1102 or implemented by the processor 1102. The processor 1102 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1102 or an instruction in a form of software. The processor 1102 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP Processor, etc.), or a digital signal processor (DSP), an application specific integrated circuit. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1104, and the processor 1102 reads the information in the memory 1104 and, in conjunction with its hardware, performs the steps of the above method.

In the embodiment of the present invention, the SDN controller 1100 passes the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information according to the cloud platform management device. The communication path between the local node and the peer node is allocated, which can ensure the service requirement of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resource to a certain extent.

Specifically, the memory 1104 may store network topology information, available bandwidth resource information, and QoS information of each forwarding path of the clouded data center network. The processor 1102 can combine the network topology information, the available bandwidth resource information, and the forwarding of the cloud data center network according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. The QoS information of the path, from the network resources managed by the SDN controller, is the local node and The peer node allocates a communication path that meets bandwidth requirements and QoS requirements.

Optionally, as another embodiment, the communication path request further carries VM migration event indication information and address information before the local node migration. The local node and the peer node are used in the network resource managed by the SDN controller according to the address information of the local node, the address information of the peer node, the bandwidth requirement information, and the QoS requirement information. The processor 1102 is specifically configured to: according to the VM migration event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the following, and the communication path that meets the bandwidth requirement and the QoS requirement. The QoS requirement information, the local communication node and the opposite end node are allocated a post-migration communication path that meets the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller, and according to the address information before the local node migration and The address information of the peer node cancels the communication path between the local node and the peer node before migration. In the embodiment of the present invention, the SDN controller 1100 re-allocates the communication path for the migrated VM, so that the service carried by the VM can be migrated without interrupting the service communication, ensuring the uninterrupted operation of the service, and improving the cloud to a certain extent. The performance of a data center system.

Optionally, as another embodiment, the communication path request further carries bandwidth abnormal event indication information. The local node and the peer node are used in the network resource managed by the SDN controller according to the address information of the local node, the address information of the peer node, the bandwidth requirement information, and the QoS requirement information. The processor 1102 is specifically configured to: according to the bandwidth abnormal event indication information, the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the communication path that meets the bandwidth requirement and the QoS requirement. The QoS requirement information is re-allocated from the network resource managed by the SDN controller to the local end node and the opposite end node to allocate a communication path that meets the bandwidth requirement and the QoS requirement. In the embodiment of the present invention, the SDN controller 1100 reallocates the communication path for the VM whose bandwidth is abnormal, and can dynamically adjust the forwarding path of the forwarding plane when the QoS requirement of the VM service changes, thereby ensuring the Qos of the VM communication, and further The services carried by the VM can be guaranteed, and the performance of the clouded data center system is improved to some extent.

The SDN controller 1100 can also perform the method of FIG. 3 and implement the specific functions of the SDN controller in the embodiments shown in FIG. 3 to FIG. 7. The embodiments of the present invention are not described herein again.

FIG. 12 is a schematic structural diagram of an SDN controller 1200 according to an embodiment of the present invention. The SDN controller 1200 can include a processor 1202, a memory 1204, and an IO channel 1201.

The IO channel 1201, the processor 1202, and the memory 1204 are interconnected by a bus 1205 system. The bus 1205 may be an ISA bus, a PCI bus, or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one double-headed arrow is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.

The memory 1204 is configured to store a program. In particular, the program can include program code, the program code including computer operating instructions. Memory 1204 can include read only memory and random access memory and provides instructions and data to processor 1202. The memory 1204 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.

The processor 1202 executes the program stored in the memory 1204, and is specifically configured to perform the following operations:

Obtaining the address information of the local node, the address information of the peer node, the bandwidth requirement information between the local node and the peer node, and the service quality QoS requirement information, where the local node is a VM or a VNF;

Sending a communication path request to the SDN controller, where the communication path request carries the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the correspondent node, and the quality of service QoS requirement Information, the cloud platform management device, the local node, and the peer node are located in a cloud data center network where the SDN controller is located, and the communication path request is used to request the SDN controller to obtain address information according to the local node. The address information of the peer node, the bandwidth requirement information, and the QoS requirement information, the communication path that meets the bandwidth requirement and the QoS requirement is allocated to the local node and the correspondent node from the network resources managed by the SDN controller.

The method performed by the cloud platform management apparatus disclosed in any of the embodiments of FIG. 4 to FIG. 8 of the present invention may be applied to the processor 1202 or implemented by the processor 1202. Processor 1202 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1202 or an instruction in a form of software. The processor 1202 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP processor, etc.), or a digital signal processor (DSP), an application specific integrated circuit. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly embodied as a hardware decoding processor. Execution is complete, or the combination of hardware and software modules in the decoding processor is performed. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1204, and the processor 1202 reads the information in the memory 1204 and completes the steps of the above method in combination with its hardware.

In the embodiment of the present invention, the cloud platform management device 1200 sends the address information of the local node, the address information of the opposite node, the bandwidth requirement information between the local node and the opposite node, and the QoS requirement information to the SDN controller. The SDN controller allocates the communication path between the local node and the peer node, which can ensure the service requirement of the VM and the peer node in the cloud data center network, and improve the utilization efficiency of the bearer resource to a certain extent.

Optionally, as an embodiment, the communication path request is used to request to allocate a new communication path to the local node and the correspondent node.

Optionally, in another embodiment, the communication path request further carries the VM migration event indication information and the address information before the local node migration, where the communication path request is used to request the local node and the opposite end after the migration. The node reassigns the communication path and cancels the communication path between the local node and the opposite node before migration.

Optionally, in another embodiment, the communication path request further carries a bandwidth abnormal event indication information, where the communication path request is used to request that the local end node and the opposite end node re-allocate the communication that meets the bandwidth requirement and the QoS requirement after the migration. path.

In addition, the cloud platform management device 1200 can also perform the method of FIG. 8 and implement the specific functions of the cloud platform management device in the embodiment shown in FIG. 4 to FIG. 8 , and details are not described herein again.

FIG. 13 is a schematic structural diagram of a data center system 1300 according to an embodiment of the present invention. The data center system 1300 can include an SDN controller 1301 and a cloud platform management device 1302. The SDN controller 1301 may be the SDN controller 900 of the embodiment shown in FIG. 9 or the SDN controller 1100 of the embodiment shown in FIG. 11. The cloud platform management device 1302 may be the cloud platform management device of the embodiment shown in FIG. 1000, or the cloud platform management device 1200 of the embodiment shown in FIG.

Of course, it should be understood that the data center system 1300 may also include a data center server, a virtual machine deployed on the data center server, and an SDN network, and the like.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the technical solution. Apply application and design constraints. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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 protection of the present invention The scope should be stated in the scope of the claims.

Claims (17)

  1. A method for allocating a bearer resource of a cloud data center network, comprising:
    The software-defined network SDN controller receives the communication path request sent by the cloud platform management device, where the communication path request carries the address information of the local node, the address information of the peer node, the local node, and the peer node The bandwidth requirement information and the service quality QoS requirement information, the local node is a virtual machine VM or a virtual network function entity VNF, and the cloud platform management device, the local node, and the peer node are located in the The clouded data center network where the SDN controller is located;
    The SDN controller is configured according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information, from the network resources managed by the SDN controller. The local end node and the opposite end node allocate a communication path that meets the bandwidth requirement and the QoS requirement;
    Sending, by the SDN controller, a forwarding flow table of the communication path to a forwarding plane device of the cloud data center network, to establish a forwarding plane communication between the local end node and the opposite end node by using a forwarding plane device path.
  2. The method according to claim 1, wherein the communication path request further carries VM migration event indication information and address information before the local node migration, and the SDN controller is configured according to the address of the local node. The information, the address information of the peer node, the bandwidth requirement information, and the QoS requirement information are allocated to the local node and the peer node according to the bandwidth requirement from the network resources managed by the SDN controller. And communication paths for Qos requirements include:
    The SDN controller according to the VM migration event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information, from the SDN controller The managed network resource allocates a post-migration communication path that meets the bandwidth requirement and the QoS requirement to the local node and the opposite end node, and according to the address information before the local node migration and the address of the opposite node The information cancels the communication path between the local node and the peer node before migration.
  3. The method of claim 1, wherein the communication path request further carries bandwidth abnormal event indication information, and the SDN controller is configured to: according to address information of the local node, address information of the opposite node, And the bandwidth requirement information and the QoS requirement information, the communication path that is allocated by the local node and the opposite node to meet the bandwidth requirement and the QoS requirement from the network resource managed by the SDN controller includes:
    The SDN controller re-controls from the SDN according to the bandwidth abnormal event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. In the network resource managed by the device, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement.
  4. The method according to any one of claims 1 to 3, wherein the address information of the communication node comprises at least one of: an identity ID of the communication node, a media access control MAC address of the communication node, The Internet Protocol IP address of the communication node, the ID of the server where the communication node is located, the ID of the local area network switch LSW where the communication node is located, the MAC address of the LSW where the communication node is located, and the IP address of the LSW where the communication node is located; The communication node is the local node or the opposite node.
  5. The method according to any one of claims 1 to 4, wherein the bandwidth requirement information between the local end node and the opposite end node includes at least one of the following: between the local end node and the opposite end node The minimum guaranteed bandwidth, the maximum available bandwidth between the local node and the opposite node.
  6. The method according to any one of claims 1 to 5, wherein the QoS requirement information between the local end node and the opposite end node includes at least one of the following: between the local end node and the opposite end node The maximum allowed delay, the maximum allowed jitter between the local node and the opposite node, and the maximum allowed packet loss rate between the local node and the opposite node.
  7. A method for allocating a bearer resource of a cloud data center network, comprising:
    The cloud platform management device acquires the address information of the local node, the address information of the peer node, the bandwidth requirement information between the local node and the correspondent node, and the service quality QoS requirement information, where the local node a virtual machine VM or virtual network function entity VNF;
    The cloud platform management device sends a communication path request to the software-defined network SDN controller, where the communication path request carries the address information of the local node, the address information of the opposite node, and the local node and The cloud platform management device, the local node, and the peer node are located in the cloud data center network where the SDN controller is located, the bandwidth requirement information and the service quality QoS requirement information between the peer nodes. The communication path request is used to request the SDN controller to control from the SDN according to the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. In the network resource managed by the device, the local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement.
  8. The method of claim 7 wherein said communication path request is further carried The VM migration event indication information and the address information before the local node migration, the communication path request is used to request that the local node and the opposite node re-allocate the communication path after the migration, and cancel the A communication path between the local node and the opposite node.
  9. The method of claim 7, wherein the communication path request further carries bandwidth abnormal event indication information, and the communication path request is used for requesting reallocation of the local node and the opposite node after migration Communication path that meets bandwidth requirements and QoS requirements.
  10. A software defined network controller, comprising:
    a receiving unit, configured to receive a communication path request sent by the cloud platform management device, where the communication path request carries address information of the local node, address information of the peer node, and the local node and the peer node The bandwidth requirement information and the service quality QoS requirement information, the local node is a virtual machine VM or a virtual network function entity VNF, and the cloud platform management device, the local node, and the peer node are located in the cloud In a data center network;
    a path allocation unit, configured to use, according to address information of the local node, address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information, from a network resource managed by the software definition network controller Allocating a communication path that meets a bandwidth requirement and a Qos requirement for the local node and the opposite node;
    a sending unit, configured to send, to the forwarding plane device of the cloud data center network, a forwarding flow table of the communication path, to establish, by using the forwarding plane device, a forwarding plane communication between the local end node and the opposite end node path.
  11. The software-defined network controller according to claim 10, wherein the communication path request further carries VM migration event indication information and address information before the local node migration, and the path allocation unit is specifically configured to: And the network managed by the software defined network controller according to the VM migration event indication information, the address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information. Distributing the post-migration communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite end node in the resource, and cancels according to the address information before the local node migration and the address information of the opposite end node. The communication path between the local node and the peer node before migration.
  12. The software-defined network controller according to claim 10, wherein the communication path request further carries bandwidth abnormal event indication information, and the path allocation unit is configured to: according to the bandwidth abnormal event indication information, The address information of the local node, the address information of the opposite node, the bandwidth requirement information, and the QoS requirement information are redefined from the software The network resource managed by the network controller allocates a communication path that meets the bandwidth requirement and the QoS requirement for the local node and the opposite node.
  13. A cloud platform management device, comprising:
    An acquiring unit, configured to obtain address information of the local node, address information of the peer node, bandwidth requirement information between the local node and the peer node, and service quality QoS requirement information, where the local end The node is a virtual machine VM or a virtual network function entity VNF;
    a generating unit, configured to generate a communication path request, where the communication path request carries address information of the local end node, address information of the opposite end node, and between the local end node and the opposite end node Bandwidth requirement information and service quality QoS requirement information;
    a sending unit, configured to send the communication path request to a software-defined network SDN controller, where the cloud platform management device, the local node, and the peer node are located in the cloud data of the SDN controller In the central network, the communication path request is used to request the SDN controller to use the address information of the local node, the address information of the correspondent node, the bandwidth requirement information, and the QoS requirement information. The local end node and the opposite end node are allocated a communication path that meets the bandwidth requirement and the QoS requirement in the network resource managed by the SDN controller.
  14. The cloud platform management apparatus according to claim 13, wherein the communication path request further carries VM migration event indication information and address information before the local node migration, and the communication path request is used for requesting migration The local node and the opposite node re-allocate the communication path, and cancel the communication path between the local node and the opposite node before the migration.
  15. The cloud platform management apparatus according to claim 13, wherein the communication path request further carries bandwidth abnormal event indication information, and the communication path request is used to request that the local node and the opposite end after migration The node redistributes the communication path that meets the bandwidth requirements and QoS requirements.
  16. The cloud platform management device according to any one of claims 13 to 15, wherein the cloud platform management device is a virtual machine VM control management device, a virtual network function management VNFM device, a system unified coordination device, or a management coordination MANO. Device.
  17. A data center system, comprising the software-defined network controller according to any one of claims 10 to 12, and the cloud platform management device according to any one of claims 13 to 16.
PCT/CN2015/084003 2014-07-31 2015-07-14 Bearer resource allocation method, apparatus and system for cloudified data center network WO2016015559A1 (en)

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