CN105703960A - Network function management system based on SDN and method thereof - Google Patents
Network function management system based on SDN and method thereof Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0695—Management of faults, events, alarms or notifications the faulty arrangement being the maintenance, administration or management system
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Abstract
The invention provides a network function management system based on an SDN. The network function management system comprises a user interface module, a requirement decomposition module, a logical processing module and an issuing module. The user interface module receives requirement information inputted by a user. The requirement decomposition module decomposes the requirement information and generates input parameters. The logical processing module generates a flow table and information of control applications according to the input parameters. The issuing module issues the flow table and the information of the control applications to an SDN controller so that the SDN controller is enabled to manage various network functions and turn on or turn off the corresponding applications according to the flow table and the information of the control applications to further control equipment in the SDN. The invention also provides a network function management method based on the SDN. Management of multiple network functions is enabled to be more flexible so that virtualization and automation of the network functions can be realized.
Description
Technical field
The present invention relates to network communication field, specifically, a kind of network function based on SDN manages system and method。
Background technology
Network function virtualization (networkfunctionsvirtualization, NFV) development makes the network function in network more diversified, wherein network function is primarily referred to as " network capable devices " in network, include but not limited to switch, router, NAT, DHCP, fire wall, WAF, vulnerability scanning, load balancing, anti-virus, anti-DoS, intrusion detection, intrusion prevention, vpn gateway, DPI etc., wherein " equipment " in " network capable devices " is for referring to, can be hardware device can also be the software in generic server, the software in virtual machine can also be present in。Management to so many network function is all carry out independent management respectively at present, so will cause problems, incompatible between the network capable devices of such as different manufacturers, and then can not effectively carry out the building of service chaining, active diversion, load balancing, resilient expansion, unified management etc. problem。
Summary of the invention
In view of this, it is an object of the invention to provide a kind of network function based on SDN and manage system and method so that the management of network function is more flexible, it is achieved the virtualization of network function, automatization。
A kind of network function based on SDN provided in embodiment of the present invention manages system, including: Subscriber Interface Module SIM, Requirement Decomposition module, logic processing module, issue module。Subscriber Interface Module SIM is for accepting the demand information of user's input；Requirement Decomposition module is used for decomposing described demand information, and generates input parameter；Logic processing module is for generating stream table according to described input parameter and controlling application message；Issue module for described stream table and described control application message are issued to SDN controller so that SDN controller manages every network function and startup according to described stream table and described control application message or cuts out respective application to control the equipment in SDN further。
Preferably, described demand information specifically includes one or more combination following: zone isolation, load sharing, resilient expansion, staged care, SDN equipment control, service chain management, high availability, network probe, network capable devices management, SDN application management。
Preferably, described network function concrete form includes the network function based on specialized hardware, the network function based on software, the network function based on virtual machine。
Preferably, described application is positioned at described SDN controller。
Preferably, described logic processing module is additionally operable to generate conventional management configuration information according to described input parameter, and issues module described in passing through described conventional management configuration information is issued to described SDN controller, and then controls the equipment in described SDN。
The network function management method based on SDN provided in a further embodiment of this invention, including: accept the demand information of user's input；Decompose described demand information, and generate input parameter；Generate stream table according to described input parameter and control application message；Described stream table and described control application message are issued to SDN controller so that SDN controller manages every network function and startup according to described stream table and described control application message or cuts out respective application to control the equipment in SDN further。
Preferably, described demand information specifically includes one or more combination following: zone isolation, load sharing, resilient expansion, staged care, SDN equipment control, service chain management, high availability, network probe, network capable devices management, SDN application management。
Preferably, described network function concrete form includes the network function based on specialized hardware, the network function based on software, the network function based on virtual machine。
Preferably, described application is positioned at described SDN controller。
Preferably, described method also includes generating conventional management configuration information according to described input parameter, and controls the equipment in described SDN according to described conventional management configuration information。
The above-mentioned network function based on SDN manages system and method, by user's request being decomposed, is converted into specific stream table, makes full use of the flexible control characteristic of SDN, and then achieve the flexible management for network functions various in network structure。
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention。
Accompanying drawing explanation
Fig. 1 is the present invention to be managed based on the network function of SDN is unified implementation Organization Chart。
Fig. 2 is present invention network function management system one functional block diagram based on SDN
Fig. 3 is the present invention based on field format for stream table in the network function management system of SDN。
Fig. 4 be the present invention based in the network function management system of SDN for the field format of application。
Fig. 5 is the present invention network function management method one embodiment flow chart based on SDN。
Main element symbol description
Network function based on SDN manages system 10
SDN controller 20
SDN 30
Subscriber Interface Module SIM 100
Logic processing module 102
Requirement Decomposition module 104
Issue module 106
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
Fig. 1 is that the present invention implements Organization Chart based on SDN function control system one。In FIG, network function exists with three kinds of forms, namely based on the network function (hereinafter referred to as form 1) of specialized hardware, the network function (hereinafter referred to as form 2) based on software, the network function (hereinafter referred to as form 3) based on virtual machine。It carries out UNICOM each through SDN 30, and accepts the control of SDN controller 20。In FIG, SDN controller 20 is connected based on the network function management system 10 of SDN with the present invention。
Fig. 2 is that the present invention is based on SDN function control system 10 1 functional block diagram。It includes Subscriber Interface Module SIM 100, Requirement Decomposition module 102, logic processing module 104, issues module 106。
Subscriber Interface Module SIM 100 is for accepting the demand information of user's input。In the present embodiment, user has various operational requirements for various network functions, such as zone isolation, the network capable devices being about to be connected in SDN 30 is divided into different link fields, access mutually or the access of only permission part even if they are connected on same switch also not allow, form logic region；Load sharing, namely automatically according to set strategy, shares traffic load on multiple network capable devices, even if multiple heterogeneous networks function device belongs to different manufacturers or different models；Resilient expansion, namely realize according to " load " situation: 1. automatically new network capable devices is linked into network and flow is imported to this network capable devices, 2. can also roll off the production line unwanted network capable devices when " load " is light and stop to import flow, 3. can accomplish the flow of network capable devices lighter to multiple " loads " is incorporated into a network capable devices；Staged care, certain process is carried out before importing to network capable devices by flow, such as filter out some unwanted messages, effectively reduce the load of network capable devices, or message is carried out the interpolation of label and deletes i.e. " painted " and " discoloring " process in order to identify different data streams；SDN equipment control, namely, under cloud framework, SDN can be pointed to " virtual switch " of cloud platform server internal and unified collaborative, the management and control of SDN equipment of physics by special technique and realize previously described three kinds of form network capable devices flows are guided；Service chain management, according to user's request, different types of network traffics are imported to different network capable devices, for example, TCP/UDP logic port is in the equipment 1 that 80 service traffics import to " form 1 ", the service traffics that TCP/UDP logic port is 21 are imported in the equipment 2 of " form 1 ", import in the equipment 3 of " form 3 " from the flow of user A, source IP network section is in the equipment 4 that the flow of B imports to possible " form 4 ", import in the equipment 5 of " form 5 " from the flow of physical port 8, etc.；High availability, by automatically identifying the heartbeat signal of network capable devices or carrying out the intercommunication of message by same network capable devices and obtain the status information of network capable devices, to judge whether overweight whether it can work on or bear, then rolled off the production line according to the result judged, or stop importing flow, flow is imported to standby or another one network capable devices simultaneously；Network probe, collects and screens all flow informations flowing through SDN, issue relevant device and be analyzed according to user's request。Network capable devices manages, namely the management of the network capable devices identical, different types of of different manufacturers, same producer is realized, such as, after network capable devices connection line, it is also carried out service chaining flow guiding process, zone isolation according to being pre-configured with strategy by automatic sensing, identification。It addition, in the present embodiment, SDN controller 20 also exists various SDN application, in order to realize the demand of user, also can enable or stop the situation of a certain SDN application, i.e. SDN application management。Above-mentioned example also not exclusively represents the user's request information under framework residing for the present invention, is only only for purposes of illustrating example cited by the present invention program。
Requirement Decomposition module 102 is used for decomposing described demand information, and generates input parameter。In the present embodiment, the demand information of user can be inputted parameter after decomposing accordingly, shown in stream table definition field as targeted in Fig. 3, the data for user's request information finally can be expressed in present embodiment that its each field represents, such as the action that the first field represents, it has specific form, and second field representative is device identification number (identification, ID), that the 3rd field representative is physical port number (in_port) ...。For example, if operated for the staged care in network function, forbid that the data stream that source IP is A flowing through the equipment that ID is 1 passes through, then Requirement Decomposition module is /action=stop_flow/{dp_id=1}/{ in_port=0}/{ src_ip=A}/{ dst_ip=0}/{ src_mac=0}/{ dst_mac=0}/{ proto=all}/{ src_port=0}/{ dst_port=0} by generating the corresponding data data of field as shown in Figure 3 after decomposing user's request information, wherein assignment be 0 represent to the no requirement (NR) of this field, proto=all represents institute's protocols having。Equally, Fig. 4 show the definition field for application demand, its first field represents action, second field represents the ID of application, 3rd field represents the input parameter of application, it being numbered the applicating example of 100586 enabling some, its field is /action=enable_app/{app_id=100568}/{ parameter=null}, wherein parameter=null represents printenv。Requirement Decomposition module 102 is except completing two kinds of input parameters above, other parameters i.e. legacy network managing configuration information that both above parameter can not complete can also be generated, and it is issued to the network equipment by other network management configuration interface such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB etc., owing to these several technology are standard technique, it is not described in detail herein。
Logic processing module 104 is used for the data genaration stream table of decomposing module output according to demand and controls the information of application, it addition, logic processing module 104 can also generate other conventional management configuration information according to demand when being necessary。In SDN, the foundation that its data forward flows table exactly。And so-called stream table, it is abstract to the one of the data forwarding capability of the network equipment in fact can be deemed to be in SDN OpenFlow。In legacy network devices, the data of switch and router forward the two layer MAC address forward table, ARP table or the three layers of IP address routing table that need to preserve in dependence equipment, and the stream table used in OpenFlow switch is also such, in its list item, but incorporate network configuration information at all levels in network, thus more rich rule can be used when carrying out data forwarding, and the control mechanism of SDN is center control machine system, it is achieved that the unification of whole net presents, collaborative and management and control。In the present embodiment, logic processing module can be further divided into multiple logical block according to user's request, such as load sharing unit, staged care unit etc., input parameter Requirement Decomposition module obtained by these little logical blocks is further processed to adapt to the requirement of bottom SDN equipment。Such as merge the stream table of the same terms, get rid of conflicting stream table, generate the stream table of the different-format of different manufacturers, in order to obtain the SDN stream table that can issue。Same, logic processing module 104 parameter of decomposing module 102 output according to demand can also generate the information of application on SDN controller that controls。Additionally, time necessary, logic processing module 104 also can generate such as other kinds of conventional management configuration informations such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB according to demand, is not described in detail herein。
Issue module 106 for the information of stream table and control application and other kinds of conventional management configuration information are issued to SDN controller 20, make SDN controller 20 according to information and the other kinds of every network function of conventional management configuration information management and the startup of described stream table and described control application or close respective application, and the equipment of different manufacturers, different model is comprehensively managed。In the present embodiment, based on the management characteristic of the network equipment in SDN 30, by issuing module, the stream table generated is sent to SDN controller 20, SDN controller 20 and then foundation stream table control SDN, to realize meeting the management network function of user's request, same, issue after the information controlling application is issued to SDN controller 20 by module 106, SDN controller 20 can control unlatching or the stopping of respective application according to the information controlling application。In the present embodiment, above-mentioned application refers to the program run on SDN controller 20, for SDN equipment is undertaken the realization of certain function, such as " Layer2 switching ", " static routing ", " dynamic routing " etc. by SDN controller 20。Same, issue module 106 and will be issued to the network equipment based on other kinds of conventional management configuration informations such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB also by SDN controller 20, reach the purpose of the management control of producer comprehensive, many, polytypic equipment。
Fig. 5 is the present invention network function management method one embodiment flow chart based on SDN。By functional module described in service chart 2, and then realize in Fig. 5 the network function management method based on SDN。
In step S500, Subscriber Interface Module SIM 100 is for accepting the demand information of user's input。In the present embodiment, user has various operational requirements for various network functions, such as zone isolation, the network capable devices being about to be connected in SDN 30 is divided into different link fields, access mutually or the access of only permission part even if they are connected on same switch also not allow, form logic region；Load sharing, namely automatically according to set strategy, shares traffic load on multiple network capable devices, even if multiple heterogeneous networks function device belongs to different manufacturers or different models；Resilient expansion, namely realize according to " load " situation: 1. automatically new network capable devices is linked into network and flow is imported to this network capable devices, 2. can also roll off the production line unwanted network capable devices when " load " is light and stop to import flow, 3. can accomplish the flow of network capable devices lighter to multiple " loads " is incorporated into a network capable devices；Staged care, certain process is carried out before importing to network capable devices by flow, such as filter out some unwanted messages, effectively reduce the load of " network function " equipment, or message is carried out the interpolation of label and deletes i.e. " painted " and " discoloring " process in order to identify different data streams；SDN equipment control, namely, under cloud framework, SDN can be pointed to " virtual switch " of cloud platform server internal and unified collaborative, the management and control of SDN equipment of physics by special technique and realize previously described three kinds of form network capable devices flows are guided；Service chain management, according to user's request, different types of network traffics are imported to different " network function " equipment, for example, TCP/UDP logic port is in the equipment 1 that 80 service traffics import to " form 1 ", the service traffics that TCP/UDP logic port is 21 are imported in the equipment 2 of " form 1 ", import in the equipment 3 of " form 3 " from the flow of user A, source IP network section is in the equipment 4 that the flow of B imports to possible " form 4 ", import in the equipment 5 of " form 5 " from the flow of physical port 8, etc.；High availability, by automatically identifying the heartbeat signal of network capable devices or carrying out the intercommunication of message by same network capable devices and obtain the status information of network capable devices, to judge whether overweight whether it can work on or bear, then rolled off the production line according to the result judged, or stop importing flow, flow is imported to standby or another one network capable devices simultaneously；Network probe, collects and screens all flow informations flowing through SDN equipment, issue relevant device and be analyzed according to user's request。Network capable devices manages, namely the management of the network capable devices identical, different types of of different manufacturers, same producer is realized, such as, after network capable devices connection line, it is also carried out service chaining flow guiding process, zone isolation according to being pre-configured with strategy by automatic sensing, identification。It addition, in the present embodiment, SDN controller 20 also existing various SDN application, the demand in order to realize user also can enable or stop the situation of a certain SDN application, i.e. SDN application management。Above-mentioned example also not exclusively represents the user's request information under framework residing for the present invention, is only only for purposes of illustrating example cited by the present invention program。
In step S502, Requirement Decomposition module 102 is used for decomposing described demand information, and generates input parameter。In the present embodiment, the demand information of user can be inputted parameter after decomposing accordingly, as shown in Figure 3, the data for user's request information finally can be expressed in present embodiment that its each field represents, such as the action that the first field represents, it has specific form, and second field representative is device identification number (identification, ID), that the 3rd field representative is physical port number (in_port) ...。For example, if operated for the staged care in network function, forbid that the data stream that source IP is A flowing through the equipment that ID is 1 passes through, then Requirement Decomposition module is /action=stop_flow/{dp_id=1}/{ in_port=0}/{ src_ip=A}/{ dst_ip=0}/{ src_mac=0}/{ dst_mac=0}/{ proto=all}/{ src_port=0}/{ dst_port=0} by generating the corresponding data of field as shown in Figure 3 after decomposing user's request information, wherein assignment be 0 represent to the no requirement (NR) of this field, proto=all represents institute's protocols having。Equally, Fig. 4 show the definition field for application demand, its first field represents action, second field represents the ID of application, 3rd field represents the input parameter of application, it being numbered the applicating example of 100586 enabling some, its field is /action=enable_app/{app_id=100586}/{ parameter=null}, wherein parameter=null represents printenv。Requirement Decomposition module 102 is except completing two kinds of input parameters above, other parameters i.e. legacy network managing configuration information can also be generated, and it is issued to the network equipment by other network management configuration interface such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB etc., owing to these several technology are the technology of standard of comparison, it is not described in detail herein。
In step S504, logic processing module 104 is used for the data genaration stream table of decomposing module output according to demand and controls the information of application, it addition, logic processing module 104 can also generate other conventional management configuration information according to demand when being necessary。In SDN, the foundation that its data forward flows table exactly。And so-called stream table, it is abstract to the one of the data forwarding capability of the network equipment in fact can be deemed to be in SDN OpenFlow。In legacy network devices, the data of switch and router forward the two layer MAC address forward table, ARP table or the three layers of IP address routing table that need to preserve in dependence equipment, and the stream table used in OpenFlow switch is also such, in its list item, but incorporate network configuration information at all levels in network, thus more rich rule can be used when carrying out data forwarding, and the control mechanism of SDN is center control machine system, it is achieved that the unification of whole net presents, collaborative and management and control。In the present embodiment, logic processing module can be further divided into multiple logical block according to user's request, such as load sharing unit, staged care unit etc., input parameter Requirement Decomposition module obtained by these little logical blocks is further processed to adapt to the requirement of bottom SDN equipment。Such as merge the stream table of the same terms, get rid of conflicting stream table, generate the stream table of the different-format of different manufacturers, in order to obtain the SDN stream table that can issue。Same, logic processing module 106 parameter of decomposing module 104 output according to demand can also generate the information of application on SDN controller 20 that controls。Additionally, time necessary, logic processing module 106 also can generate such as other kinds of conventional management configuration informations such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB according to demand, is not described in detail herein。
In step S506, issue module 106 and be issued to SDN controller 20 for information and the other kinds of conventional management configuration information described stream table and described control applied, make SDN controller 20 according to information and the other kinds of every network function of conventional management configuration information management and the startup of described stream table and described control application or close respective application, and the equipment of different manufacturers, different model is comprehensively managed。In the present embodiment, based on the management characteristic of the network equipment in SDN 30, by issuing module 106, the stream table generated is sent to SDN controller 20, SDN controller 20 and then foundation stream table control SDN and meet the management network function of user's request, same, issuing after the information controlling application is issued to SDN controller 20 by module 106, SDN controller 20 can control the unlatching of respective application or stopping according to the information controlling application。In the present embodiment, above-mentioned application refers to the program run on SDN controller 20, for SDN equipment is undertaken the realization of certain function, such as " Layer2 switching ", " static routing ", " dynamic routing " etc. by SDN controller 20。Same, issue module 106 and will be issued to the network equipment based on other kinds of conventional management configuration informations such as CLI (order line), SNMP (Simple Network Management Protocol), NetConf and ovsDB also by SDN controller 20, reach the purpose of the management control of producer comprehensive, many, polytypic equipment。
In sum, by performing the present invention network function management system and method based on SDN, by user's request is decomposed, it is converted into specific stream table and other kinds of conventional management configuration information, make full use of the flexible control characteristic of SDN, and then achieve the flexible management for network functions various in network。
It should be noted that embodiment as described above, it is not intended that the restriction to invention protection domain。Any amendment made in the spirit and principles in the present invention, equivalent replacement and improvement etc., should be included in protection scope of the present invention。
Claims (10)
1. the network function management method based on SDN, it is characterised in that including:
Accept the demand information of user's input；
Decompose described demand information, and generate input parameter；
Generate stream table according to described input parameter and control application message；And
Described stream table and described control application message are issued to SDN controller so that described SDN controller manages every network function and startup according to described stream table and described control application message or cuts out respective application to control the equipment in SDN further。
2. the network function management method based on SDN as claimed in claim 1, it is characterized in that, described demand information specifically includes one or more combination following: zone isolation, load sharing, resilient expansion, staged care, SDN equipment control, service chain management, high availability, network probe, network capable devices management, SDN application management。
3. the network function management method based on SDN as claimed in claim 1, it is characterised in that described network function concrete form includes the network function based on specialized hardware, the network function based on software, the network function based on virtual machine。
4. the network function management method based on SDN as claimed in claim 1, it is characterised in that described application is positioned at described SDN controller。
5. the network function management method based on SDN as claimed in claim 1, it is characterised in that described method also includes: generate conventional management configuration information according to described input parameter, and control the equipment in described SDN according to described conventional management configuration information。
6. the network function based on SDN manages system, it is characterised in that including:
Subscriber Interface Module SIM, for accepting the demand information of user's input；
Requirement Decomposition module, is used for decomposing described demand information, and generates input parameter；
Logic processing module, for generating stream table according to described input parameter and controlling application message；And
Issue module, for described stream table and described control application message are issued to SDN controller so that described SDN controller manages every network function and startup according to described stream table and described control application message or cuts out respective application to control the equipment in SDN further。
7. the network function based on SDN as claimed in claim 6 manages system, it is characterized in that, described demand information specifically include following one or more combination zone isolation, load sharing, resilient expansion, staged care, SDN equipment control, service chain management, high availability, network probe, network capable devices management, SDN application management。
8. the network function based on SDN as claimed in claim 6 manages system, it is characterised in that described network function concrete form includes the network function based on specialized hardware, the network function based on software, the network function based on virtual machine。
9. the network function based on SDN as claimed in claim 6 manages system, it is characterised in that described application is positioned at described SDN controller。
10. the network function based on SDN as claimed in claim 6 manages system, it is characterized in that, described logic processing module is additionally operable to generate conventional management configuration information according to described input parameter, and issue module described in passing through described conventional management configuration information is issued to described SDN controller, and then control the equipment in described SDN。
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