CN110430114A - A kind of virtual router and the method for realizing SDN network and traditional IP interconnection - Google Patents
A kind of virtual router and the method for realizing SDN network and traditional IP interconnection Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
- H04L12/4675—Dynamic sharing of VLAN information amongst network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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Abstract
The invention discloses a kind of virtual routers, it is characterised in that: including SDN controller, kernel module, protocol module；The SDN controller: to the northbound interface of upper offer standard, the flow table configuration-direct of application and the message data of protocol module are carried out OF protocol encapsulation by SDN controller module, and be forwarded at corresponding interface and handle；To the southbound interface of lower offer standard；The kernel module: shielding bottom provides the IP layer and interface of standard for the operation of upper-layer protocol；And complete the communication adaptation between IP kernel message and SDN controller；The protocol module: for handling traditional standard router protocol, corresponding routing table, forwarding table are formed, and SDN controller is informed by routing engine module, is generated flow entry according to routing table, forwarding table by SDN controller, and carry out issuing processing.The present invention is able to achieve SDN network and traditional network interconnected communication.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of virtual router and realization SDN network and tradition
The method of IP network interconnection.
Background technique
Legacy network devices are individually controlled by equipment, and each equipment should complete forwarding surface function, complete control again
Face processed and chain of command function complete networking by interactive controlling signaling between equipment.
Firstly, being difficult to carry out resource tune from the angle of the whole network on web impact factor and service quality guarantee in traditional network
Whole and control；Secondly on forward mode, legacy network devices are substantially fixation, i.e., carry out routing according to target ip address
Forwarding, can not be according to every progress comprehensive matching forwarding in MAC, IP, TCP/UDP；Furthermore legacy network devices are to net
What network manager was presented is black box mode, the state and the method for operation of network be all the agreement that carries of these network device itselfs from
Dynamic completion, network manager can not intervene at all；In addition in economic benefit, the completion of network function in traditional network,
The participation of software in equipment is needed, the application of new technology each time requires to carry out the upgrading or replacement of equipment.
With technology development and evolution, the extensive use of the technologies such as network virtualization, big data and cloud computing, traditional net
Network framework has been difficult to be competent at, and SDN network is come into being.
SDN network includes SDN controller and edge SDN switch, and SDN network main feature includes following several respects:
A) control and forward separating；
B) centralized network-control；
C) open standard programmable interface.
Networking mainly passes through the flow table forwarding between SDN controller control internal switch nodes inside SDN network；For big
Scale network, can carry out region division to SDN network, and a SDN controller controls a region.The east of controller is crossed by whole Netcom
West constructs controller cluster to interface inter-link, selects higher level controller, realizes and controls each controller, and completes complete
Network control system.
Currently, traditional network is applied on a large scale, and SDN network is as emerging network, be necessarily required to it is existing
Traditional network interconnected, intercommunication, interoperability.
Since in SDN network framework, interchanger no longer parses any agreement, flow table matching and forwarding, control are only done
Mode is all needed to be sent on controller and be parsed using centralization, all protocol analysis, and flow table issuance is also unified under controller
Hair.SDN controller is only responsible for the parsing and encapsulation of agreement, and SDN internal network, using the control of centralization, inside is no longer deposited
In interface IP address, Routing Protocol etc., therefore works as SDN network and need to need with existing IP network routing device in protocol level
When intercommunication, exist because can not be with the ARP protocol, Routing Protocol, MPLS label retransmission protocol intercommunication of standard the problems such as, it is difficult
To be used together with existing network fusion, this is a kind of challenge to transitional SDN technology is in.
The research of SDN technology is concentrated mainly on the cluster application etc. between SDN internal network and multiple domain SDN network at present,
It is inadequate to SDN network and traditional network interconnection and mixed networking research.
Summary of the invention
The present invention provides a kind of void to solve the problems, such as that traditional IP cannot be interconnected directly with SDN network
Quasi- router and the method for realizing SDN network and traditional IP interconnection realize SDN network by building virtual router
With Traditional IP interconnected communication.
To realize aforementioned present invention purpose, the technical solution adopted is as follows: a kind of virtual router, including SDN controller,
Kernel module, protocol module；
The SDN controller: to the northbound interface of upper offer standard, the flow table configuration-direct of application and protocol module
Message data carries out OF protocol encapsulation by SDN controller module, and is forwarded at corresponding interface and handles；To lower offer standard
Southbound interface；
The kernel module: shielding bottom provides the IP layer and interface of standard for the operation of upper-layer protocol；And it completes in IP
Communication adaptation between core message and SDN controller；
The protocol module: for handling traditional standard router protocol, corresponding routing table, forwarding are formed
Table, and SDN controller is informed by routing engine module, flow entry is generated according to routing table, forwarding table by SDN controller, and
It carries out issuing processing.
Preferably, the kernel module is configured with NetLink adaptation module, for completing the mapping of virtual IP interface.
Further, it is suitable to IP kernel interface data interaction to be also used to complete SDN controller for the NetLink adaptation module
Match, provides protocol module unified standardization IP interface by IP inner nuclear layer, the protocol data received from SDN controller passes through
NETLINK adaptable interface is sent to IP inner nuclear layer.
Still further, the protocol module use Quagga consultative management module, can pass through standard Socket interface from
IP inner nuclear layer receives protocol massages.
Still further, the traditional standard router protocol includes unicast routing protocol, multicast routing protocol, MPLS association
View, the protocol module respectively correspond unicast routing protocol, multicast routing protocol, mpls protocol to form unicast routing table, group
Broadcast forwarding table, MPLS label forwarding table.
Still further, the SDN controller deployment is on the control unit, described control unit includes computer, industry control
Plate, server, cloud platform；SDN controller load operating in the form of software.
Based on above-described virtual router, the present invention also provides a kind of realization SDN network and traditional IP are mutual
The method of connection, described this method include preparation process, interactive process, the specific steps are as follows:
Preparation process:
S101: the edge SDN switch in SDN network is attached with the conventional switch in traditional IP, is opened
The conventional switch of dynamic traditional IP, and start ospf protocol on interconnecting interface；
S102: SDN network is virtually become to virtual router as described in any one of claims 1 to 6；
S103: constructing virtual interface mapping relations in the NetLink adaptation module of virtual router, and SDN network is external
The interface that the interface mappings of presentation are externally presented at virtual router；
S104: starting ospf protocol on virtual router, externally sends ospf protocol by virtual interface；
Interactive process:
S201: virtual interface mapping relations are constructed in step S103, the kernel module of virtual router passes through SDN controller
Southbound interface to edge SDN switch download flow table, complete SDN controller to edge SDN switch carry out flow table setting, and
SDN controller is all sent to handle the protocol massages of all conventional switch；
S202: edge SDN switch receives the OSPF routing message of conventional switch transmission, is sent to by southbound interface
The processing of SDN controller；
S203:SDN controller passes through virtual interface mapping relations pair according to the transmission address for including in message and interface number
Virtual interface should be arrived, IP kernel message sent to by NetLink adaptation module in kernel module；
S204: protocol module receives the protocol massages of IP kernel transmission by routing engine module, and is sent to ospf protocol
Module is handled；
S205:OSPF agreement obtains routing report by sending routing message to virtual interface in NetLink adaptation module
Text, and the interface that corresponding interchanger is externally presented is found according to interface number and virtual interface mapping relations, message is sent to SDN control
Device processed
S206:SDN controller is sent to OSPF message on the interface of corresponding edge SDN switch by northbound interface
It sends.
Further, the transmitting-receiving process based on the OSPF routing message in above-mentioned protocol module, forms road for ospf protocol
By table；Routing table is sent to the processing of SDN controller by protocol process module, and SDN controller first carries out routing table after receiving
It is converted into flow entry；Flow entry is issued to corresponding edge SDN switch and executed by SDN controller.
Still further, the southbound interface includes flow table issuance to the execution of each edge SDN switch, OpenFlow agreement
Encapsulation and parsing, the processing of standard ICP/IP protocol message.
Still further, the interface that the SDN network is externally presented is the external interface of each edge SDN switch, institute
It states the external interface of each edge SDN switch and is mapped to a router interface on the virtual router.
SDN network is integrally invented a virtual router by the present invention, and virtual router is integrally externally rendered as one
Standard router function.SDN network internal network is regarded as the interaction of virtual router internal information, can pass through pure SDN flow table
The normal flow table matching exchange of network internal is realized in control；The external interconnecting interface of SDN network can be mapped as virtual router to external
Mouthful, various conventional router agreements are run in virtual router, and protocol interaction is externally carried out by each external connection interface, it is this
Under mode, SDN network can be disposed in the entire network in a manner of one common two layers or three-layer routing device, realize flattening
Networking.
SDN network of the present invention is made of SDN controller and edge SDN switch, each SDN controller can
More SDN switches are controlled, SDN controller completes the networking of SDN network internal standard.
SDN controller of the present invention is completed to control SDN network, and to edge SDN switch interface and protocol aware control
Function processed.A virtual channel, such virtual router are established between the interface that SDN network is externally presented and SDN controller
On network layer protocol the OF of virtual channel can be transferred through by the all-network layer protocol message that the virtual interface being adapted to is sent
Agreement is sent on corresponding SDN switch interface, and corresponding IP kernel interface gives protocol module processing message transmission.Agreement
The agreement of module operation can also transmit data to edge SDN switch interface, realization and external perimysium reference by virtual channel
Protocol interaction between router.
Beneficial effects of the present invention are as follows:
1. the present invention proposes the concept of virtual router, SDN network is integrally invented a virtual standard router,
The interface mappings that SDN network edge SDN switch is externally presented are the interface of virtual router, by constructing virtual channel,
Direct-connected in logic between realization SDN controller and edge SDN switch, protocol massages can be carried out by the virtual channel to diplomacy
Mutually.
2. method of the present invention can be realized SDN network and the seamless intercommunication of non-SDN network, including SDN network and non-
Direct interconnection, multiple SDN network interconnection, multiple tradition non-SDN route-exchanging device and multiple of the edge of SDN network to edge
The mixing of SDN network interconnects.
3. method of the present invention is simply easily realized, adaptation layer is constructed by NetLink, shielding bottom-layer network realizes machine
System, provides the IP inner nuclear layer platform of standard, measured Quagga protocol process module directly dispose just be able to carry out with outside
Portion's traditional network carries out the interaction of two or three layer protocols.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment virtual router.
Fig. 2 is the present embodiment system structure diagram.
Fig. 3 is the flow chart that the present embodiment edge SDN switch receives protocol massages.
Fig. 4 is the flow chart that the present embodiment protocol module receives message from IP kernel.
Fig. 5 is the flow chart that the present embodiment protocol module list item issues.
Fig. 6 is the schematic diagram that SDN network is invented virtual router by the present embodiment.
Fig. 7 is the present embodiment virtual channel schematic diagram.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in Figure 1, a kind of virtual router, including SDN controller, kernel module, protocol module；
The SDN controller: to the northbound interface of upper offer standard, the flow table configuration-direct of application and protocol module
Message data carries out OF protocol encapsulation by SDN controller module, and is forwarded at corresponding interface and handles；To lower offer standard
Southbound interface；
The kernel module: shielding bottom provides the IP layer and interface of standard for the operation of upper-layer protocol；And it completes in IP
Communication adaptation between core message and SDN controller；
The protocol module: the protocol module uses Quagga consultative management module, provides traditional standard router association
Processing software function is discussed, unicast routing protocol (OSPF, RIP, EIGRP, BGP), the Multicast Routing association of traditional standard can be completed
View, mpls protocol, are respectively formed unicast routing table, multicast forward table, MPLS label forwarding table, and accuse by routing engine module
Know SDN controller, generates flow entry according to information such as routing table, forwarding tables by SDN controller, and issue processing.
Kernel module described in the present embodiment is configured with NetLink adaptation module, for completing the mapping of virtual IP interface.Institute
It states NetLink adaptation module and is also used to complete SDN controller to IP kernel interface data interaction adaptation, by IP inner nuclear layer to association
View module provides unified standardization IP interface, and the protocol data received from SDN controller is sent to by NETLINK adaptable interface
IP inner nuclear layer.
Protocol module described in the present embodiment uses Quagga consultative management module, provides the agreement under standardized network interface
Processing function can receive protocol massages from inner nuclear layer by standard Socket interface, and all general network protocols can be
It is run well on IP inner nuclear layer.
SDN controller described in the present embodiment dispose on the control unit, described control unit include computer, industrial control board,
Server, cloud platform；SDN controller load operating in the form of software.
Based on above-described virtual router, the present embodiment additionally provides a kind of realization SDN network and traditional IP
The method of interconnection, the present embodiment are explained in detail with instance system as shown in Figure 2, and the instance system includes four exchanges
Machine, wherein switch A, B are traditional three-tier switch, and interchanger C, D are SDN switch, SDN controller and interchanger C, D mono-
It rises and constitutes SDN network.The interface 1 of SDN switch C is connected with conventional switch A, and the interface 4 of SDN switch D is exchanged with tradition
Machine B connection.A' and B' is respectively terminal computer.
The method for realizing SDN network and traditional IP interconnection includes preparation process, interactive process, and specific steps are such as
Under:
Preparation process:
S101: the edge SDN switch in SDN network is attached with the conventional switch in traditional IP, is opened
The conventional switch of dynamic traditional IP, and start ospf protocol on interconnecting interface.As shown in Figure 2.
S102: SDN network is virtually become to the virtual router as above stated, as shown in Figure 2.
S103: constructing virtual interface mapping relations in the NetLink adaptation module of virtual router, and SDN network is external
The interface that the interface mappings of presentation are externally presented at virtual router, as shown in Fig. 2, the present embodiment virtual router externally has two
A virtual interface is respectively M and N, and wherein M interface IP address is 100.0.0.2, and the interface IP address of N is 200.0.0.2；That is M and N and
The mapping relations of the interface 1 of entity edge SDN switch C, the interface 4 of D.
S104: starting ospf protocol on virtual router, externally sends ospf protocol by virtual interface；
Interactive process:
S201: virtual interface mapping relations are constructed in step S103, the kernel module of virtual router passes through SDN controller
Southbound interface download flow table to SDN switch, complete SDN controller and flow table setting carried out to edge SDN switch, and by institute
There are the protocol massages of conventional switch that SDN controller is all sent to handle；
Specifically, the kernel module of virtual router is issued by the southbound interface of SDN controller to SDN switch C and D
Flow table, it is desirable that SDN switch receive all broadcast addresses, multicast address and destination address be 100.0.0.2 and
200.0.0.2 the Packet-In message in southbound interface agreement that message passes through SDN controller is sent to the processing of SDN controller.
S202: edge SDN switch C and D receive the OSPF routing message that traditional three-tier switch A and B is sent, and pass through
The processing of SDN controller is sent in the encapsulation of Packet-In message, as shown in figure 3, edge SDN switch receives the process of protocol massages.
After S203:SDN controller receives SDN switch Packet-In message, according to the transmission address that includes in message and
Interface number corresponds to virtual interface by virtual interface mapping relations, sends message in IP by NetLink adaptation module
Core.
S204: it as shown in figure 4, protocol process module is waited in the enterprising traveling journey of kernel, is received by routing engine module
The protocol massages of IP kernel transmission, the i.e. protocol massages of switch A and B brought, and it is sent to the association of the OSPF in protocol module
It discusses module and carries out route processing.
S205: as shown in figure 5, the ospf protocol of Quagga consultative management simultaneously is by sending routing report to virtual interface
Text obtains routing message in NetLink adaptation module, and finds corresponding exchange according to interface number and virtual interface mapping relations
Message is sent to SDN controller by the interface that machine is externally presented；
S206:SDN controller is sent to OSPF message based on the northbound interface that Packet-Out message is controlled by SDN
It is sent on the corresponding interface of corresponding edge SDN switch.
Transmitting-receiving process of the present embodiment based on the OSPF routing message in above-mentioned protocol module, ospf protocol is formed and is routed
Table；Routing table is sent to the processing of SDN controller by protocol process module, and SDN controller first turns routing table after receiving
Change flow entry into；SDN controller executes the flow table issuance of node C and node D to corresponding SDN switch.
Wherein, the routing table is as follows:
Destination address: B next-hop: B outgoing interface: N hop count: 1
Destination address: A next-hop: A outgoing interface: M hop count: 1
The SDN controller carries out routing table to be converted into flow entry, as follows:
Node C flow table:
Destination address: B next-hop: D outgoing interface: 2
Destination address: A next-hop: A outgoing interface: 1
Node D flow table:
Destination address: B next-hop: B outgoing interface: 4
Destination address: A next-hop: C outgoing interface: 3
The present embodiment is during practical traditional network and SDN network interconnect, when the service message of traditional network enters
To after SDN network, SDN switch forwards the data to corresponding next-hop node according to flow table；
It is specific as follows:
D1: the Ping terminal B ' on terminal A '；
D2: conventional switch A issues next-hop 100.0.0.2, i.e. C node according to routing table, business；
D3: edge SDN switch C carries out matching forwarding according to the flow table of SDN controller, and data are turned
It is dealt into edge SDN switch D；
D4: edge SDN switch D carries out matching forwarding according to the flow table of SDN controller, and data are turned
It is dealt into 200.0.0.1, i.e. B node；
D5: conventional switch B execution conventional switch function forwards the data to terminal B '；
The inverse process of the present embodiment Ping terminal A ' on terminal B ' is similar, to realize that two-way Ping is logical.
Southbound interface described in the present embodiment includes flow table issuance to the execution of each SDN switch, the encapsulation of OpenFlow agreement
With parsing, the processing of standard ICP/IP protocol message.
The interface that SDN network described in the present embodiment is externally presented is the external interface of each edge SDN switch, described every
The external interface of a edge SDN switch is mapped to a router interface on the virtual router.
As shown in fig. 6, SDN network is integrally invented a virtual router by the present embodiment, virtual router is integrally right
It is rendered as a standard router function outside.SDN network internal network is regarded as the interaction of virtual router internal information, can lead to
It crosses pure SDN flow table control and realizes the normal flow table matching exchange of network internal；The external interconnecting interface of SDN network can be mapped as virtual road
By device external interface, various conventional router agreements are run in virtual router, and externally assisted by each external connection interface
View interacts, and under this mode, SDN network can be disposed in the entire network in a manner of one common two layers or three-layer routing device,
Realize the networking of flattening.
SDN network described in the present embodiment is made of SDN controller and SDN switch, each SDN controller can be controlled
More SDN switches are made, SDN controller completes the networking of SDN network internal standard.
The present embodiment SDN controller is completed to control SDN network, and to edge SDN switch interface and protocol aware
Control function.As shown in fig. 7, a virtual channel is established between the interface that SDN network is externally presented and SDN controller, this
Network layer protocol on sample virtual router can be transferred through by the all-network layer protocol message that the virtual interface being adapted to is sent
The OF agreement of virtual channel is sent on corresponding SDN switch interface, and corresponding IP kernel interface gives agreement message transmission
Resume module.The agreement of protocol module operation can also transmit data to edge SDN switch interface by virtual channel, real
The now protocol interaction between external perimysium reference router.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.Any modification done within the spirit and principles of the present invention and changes equivalent replacement
Into etc., it should all be included in the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of virtual router, it is characterised in that: including SDN controller, kernel module, protocol module；
The SDN controller: to the northbound interface of upper offer standard, the flow table configuration-direct of application and the message of protocol module
Data carry out OF protocol encapsulation by SDN controller module, and are forwarded at corresponding interface and handle；To the south orientation of lower offer standard
Interface；
The kernel module: shielding bottom provides the IP layer and interface of standard for the operation of upper-layer protocol；And complete IP kernel report
Communication adaptation between text and SDN controller；
The protocol module: for handling traditional standard router protocol, forming corresponding routing table, forwarding table, and
SDN controller is informed by routing engine module, is generated flow entry according to routing table, forwarding table by SDN controller, and carried out down
Hair processing.
2. virtual router according to claim 1, it is characterised in that: the kernel module is adapted to configured with NetLink
Module, for completing the mapping of virtual IP interface.
3. virtual router according to claim 2, it is characterised in that: the NetLink adaptation module is also used to complete
SDN controller is adapted to IP kernel interface data interaction, is provided unified standardization IP to protocol module by IP inner nuclear layer and is connect
Mouthful, the protocol data received from SDN controller is sent to IP inner nuclear layer by NETLINK adaptable interface.
4. virtual router according to claim 3, it is characterised in that: the protocol module uses Quagga consultative management
Module can receive protocol massages from IP inner nuclear layer by standard Socket interface.
5. virtual router according to claim 4, it is characterised in that: the traditional standard router protocol includes unicast
Routing Protocol, multicast routing protocol, mpls protocol, the protocol module assist unicast routing protocol, multicast routing protocol, MPLS
View respectively corresponds to form unicast routing table, multicast forward table, MPLS label forwarding table.
6. virtual router according to claim 5, it is characterised in that: the SDN controller is disposed on the control unit,
Described control unit includes computer, industrial control board, server, cloud platform；The SDN controller loads fortune in the form of software
Row.
7. a kind of method for realizing SDN network and traditional IP interconnection, it is characterised in that: described this method includes preparing
Journey, interactive process, the specific steps are as follows:
Preparation process:
S101: the edge SDN switch in SDN network is attached with the conventional switch in traditional IP, and starting passes
The conventional switch of system IP network, and start ospf protocol on interconnecting interface；
S102: SDN network is virtually become to virtual router as described in any one of claims 1 to 6；
S103: virtual interface mapping relations are constructed in the NetLink adaptation module of virtual router, SDN network is externally presented
The interface that is externally presented at virtual router of interface mappings；
S104: starting ospf protocol on virtual router, externally sends ospf protocol by virtual interface；
Interactive process:
S201: virtual interface mapping relations are constructed in step S103, the kernel module of virtual router passes through the south of SDN controller
Flow table is downloaded to interface to edge SDN switch, SDN controller is completed and flow table setting is carried out to edge SDN switch, and by institute
There are the protocol massages of conventional switch that SDN controller is all sent to handle；
S202: edge SDN switch receives the OSPF routing message of conventional switch transmission, is sent to SDN control by southbound interface
Device processing processed；
S203:SDN controller is corresponded to according to the transmission address for including in message and interface number by virtual interface mapping relations
Virtual interface, the IP kernel sent message to by NetLink adaptation module in kernel module；
S204: protocol module receives the protocol massages of IP kernel transmission by routing engine module, and is sent to ospf protocol module
It is handled；
S205:OSPF agreement is by sending routing message to virtual interface, the acquisition routing message in NetLink adaptation module,
And the interface that corresponding interchanger is externally presented is found according to interface number and virtual interface mapping relations, message is sent to SDN control
Device
S206:SDN controller is sent to OSPF message on the interface of corresponding edge SDN switch by northbound interface and sends
It goes out.
8. the method according to claim 7 for realizing SDN network and traditional IP interconnection, it is characterised in that: based on upper
The transmitting-receiving process for stating the OSPF routing message in protocol module, forms routing table for ospf protocol；Protocol process module is routing
Table is sent to the processing of SDN controller, and SDN controller first carries out routing table after receiving to be converted into flow entry；SDN controller handle
Flow entry is issued to corresponding SDN switch and executes.
9. the method according to claim 7 for realizing SDN network and traditional IP interconnection, it is characterised in that: the south
It include flow table issuance to the execution of each SDN switch, the encapsulation of OpenFlow agreement and parsing, standard ICP/IP protocol report to interface
The processing of text.
10. the method according to claim 7 for realizing SDN network and traditional IP interconnection, it is characterised in that: described
The interface that SDN network is externally presented is the external interface of each edge SDN switch, and each edge SDN switch is external
Interface a router interface is mapped on the virtual router.
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| CN112702269A (en) * | 2021-01-21 | 2021-04-23 | 国网新疆电力有限公司信息通信公司 | SDN and non-SDN intercommunication method and intercommunication system |
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