CN101453467B - Method for supporting point to multi-point network interface by IS-IS dynamic routing protocol - Google Patents
Method for supporting point to multi-point network interface by IS-IS dynamic routing protocol Download PDFInfo
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- CN101453467B CN101453467B CN2007102028196A CN200710202819A CN101453467B CN 101453467 B CN101453467 B CN 101453467B CN 2007102028196 A CN2007102028196 A CN 2007102028196A CN 200710202819 A CN200710202819 A CN 200710202819A CN 101453467 B CN101453467 B CN 101453467B
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Abstract
The invention relates to the field of computer network data communication, in particular to IS-IS dynamic route protocol technology. The invention discloses a method for supporting a point-to-multipoint network interface by the IS-IS dynamic route protocol, which can directly operate the IS-IS dynamic route protocol on the point-to-multipoint network interface. The technical proposal of the method comprises the following steps: a, operating the IS-IS dynamic route protocol on interfaces of all routers of the point-to-multipoint network; b, setting convergence routers into point-to-multipoint network interfaces, and setting interfaces of other routers into point-to-point network interfaces; and c, establishing point-to-point neighbors for the convergence routers with each router respectively, and maintaining synchronization of neighbored link status database. The invention has the advantages that the method can directly operate the IS-IS dynamic route protocol on the point-to-multipoint network interface without modifying network interface configuration so as to simplify the network interface configuration.
Description
Technical field
The present invention relates to the computer network data communications field, particularly IS-IS dynamic routing protocol technology.
Background technology
The IS-IS dynamic routing protocol is a kind of Link State dynamic routing protocol.The IS-IS dynamic routing protocol can only be supported point to point network (like PPP) interface and radio network (like Ethernet) interface to the support of type of network interface from it is stipulated in the agreement that.The IS-IS dynamic routing protocol can not be supported point-to-point configuration (as X.25) interface.
At present, the method that operation IS-IS dynamic routing protocol uses on the point-to-point configuration interface is: the point-to-point configuration interface is divided into a plurality of point to point network interfaces with a plurality of sub-interfaces.On the convergence router of point-to-point configuration, create a plurality of sub-interfaces; Each sub-interface links to each other with an end-to-end router; Thereby point-to-point configuration is divided into a plurality of point to point networks, reaches the purpose of operation IS-IS dynamic routing protocol on point-to-point configuration.
Said method essentially, the IS-IS dynamic routing protocol is not supported the point-to-point configuration interface, but is divided into a plurality of point to point network interfaces to the point-to-point configuration interface.When the router quantity on the point-to-point configuration is a lot, will need a large amount of sub-interface configurations on the convergence router.Simultaneously, when the Routing Protocol that moves on network switched to the IS-IS dynamic routing protocol by other Routing Protocol, the point-to-point configuration interface need all reconfigure.The point-to-point configuration interface is divided into a plurality of point to point network interfaces through sub-interface, has increased the risk and the complexity of network upgrade.
Summary of the invention
Technical problem to be solved by this invention is the method that provides a kind of IS-IS dynamic routing protocol to support the point-to-point configuration interface, directly operation IS-IS dynamic routing protocol on the point-to-point configuration interface.
The technical scheme that the present invention solve the technical problem employing is that the IS-IS dynamic routing protocol is supported the method for point-to-point configuration interface, it is characterized in that, comprises the following steps:
A. operation IS-IS dynamic routing protocol on the interface of the all-router of point-to-point configuration;
B. the interface of convergence router is set to the point-to-point configuration interface, and the interface of all the other routers is set to the point to point network interface;
C. convergence router is set up point-to-point neighbours with each router respectively, and the maintenance of neighbor link state database synchronization.
Further, said step c comprises:
C1. on the point-to-point configuration interface, send neighbours' negotiation packet, convergence router is set up point-to-point neighbours with each router respectively;
C2. in LSD, produce neighbours' adjacency information;
C3. timed sending message on the point-to-point configuration interface is safeguarded the link state database synchronization of the LSD and the convergence router of each router.
The invention has the beneficial effects as follows; Need not revise the network interface configuration; Can directly on the point-to-point configuration interface, directly move the IS-IS dynamic routing protocol, simplify the network interface configuration, operation IS-IS dynamic routing protocol is more easy, easy on various point-to-point configurations.Increase the flexibility of operation Routing Protocol on the network, made things convenient for system upgrade and renewal.
Below in conjunction with embodiment and accompanying drawing, the present invention is described further.
Description of drawings
Fig. 1 is the network topological diagram of the specific embodiment of the invention.
Embodiment
Referring to Fig. 1, in network X.25, there are router-A, router B, router C, wherein router-A is a convergence router, respectively has a virtual connections (VC) to reach router B and router C in the network X.25.Router-A and router B direct communication, router-A and router C direct communication, but router B and router C can not direct communications.X.25 router-A is connected to that the interface of network is S0/0, and the IP address is 10.1.1.1/8; X.25 router B is connected to that the interface of network is S0/0, and the IP address is 10.1.1.2/8; X.25 router C is connected to that the interface of network is S0/0, and the IP address is 10.1.1.3/8.At the interfaces enabled IS-IS dynamic routing protocol of the S0/0 of router-A, and the S0/0 interface of router-A is set to the point-to-point configuration interface; At the interfaces enabled IS-IS dynamic routing protocol of the S0/0 of router B, and the S0/0 interface of router B is set to the point to point network interface; At the interfaces enabled IS-IS dynamic routing protocol of the S0/0 of router C, and the S0/0 interface of router C is set to the point to point network interface.
Behind the interfaces enabled IS-IS dynamic routing protocol of the S0/0 of router-A; The point-to-point neighbours' negotiation packet of timed sending (Point-to-point IS to IS hello PDU message); Respectively with router B and the router C point-to-point neighbours that hold consultation, machinery of consultation is consulted identical with the point-to-point neighbours of general point to point network interface.Because the S0/0 interface of router-A is the point-to-point configuration interface,, promptly set up router B, two point-to-point neighbours of router C simultaneously so allow to set up simultaneously a plurality of point-to-point neighbours.
After router-A and router B, router C set up point-to-point neighbours respectively; In the LSD of router-A, router B, router C, produce neighbours' adjacency information, method is the same with the adjacency information that point-to-point neighbours on the general point to point network interface produce neighbours.On the S0/0 of the router-A interface during neighbor advertisement Link State Packet (LSP message) in network X.25; Owing on the S0/0 interface of router-A router B and two point-to-point neighbours of router C are arranged; In order to guarantee the reliability of LSP message transmissions; On the S0/0 of router-A interface, start sufficient sequence message (CSNP message) transmission timer, timed sending CSNP message, the breviary information of content in the LSD of router B and router C advertizing router A.Receive the CSNP message of router-A transmission as router B, router C after; LSD content in the CSNP message and local LSD content are compared; If find the local LSD content that lacks neighbours, then ask for the LSD content that lacks to router-A transmitting section sequence number message (PSNP message) request; If find that there is more LSD content this locality, then initiatively the LSD content sent to router-A.Thereby make that the LSD of router B and router C is all synchronous with router-A, guaranteed all-router on the network X.25 LSD synchronously.
The above X.25 network be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Anyly be familiar with this technological people in the technical scope that the present invention discloses, the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (1)
1.IS-IS dynamic routing protocol is supported the method for point-to-point configuration interface, it is characterized in that, comprises the following steps:
A. operation IS-IS dynamic routing protocol on the interface of the all-router of point-to-point configuration;
B. the interface of convergence router is set to the point-to-point configuration interface, and the interface of all the other routers is set to the point to point network interface;
C. convergence router is set up point-to-point neighbours with each router respectively, and the maintenance of neighbor link state database synchronization; Said step c comprises:
C1. on the point-to-point configuration interface, send neighbours' negotiation packet, convergence router is set up point-to-point neighbours with each router respectively;
C2. in LSD, produce neighbours' adjacency information;
C3. timed sending message on the point-to-point configuration interface is safeguarded the link state database synchronization of the LSD and the convergence router of each router.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007102028196A CN101453467B (en) | 2007-12-03 | 2007-12-03 | Method for supporting point to multi-point network interface by IS-IS dynamic routing protocol |
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| CN2007102028196A CN101453467B (en) | 2007-12-03 | 2007-12-03 | Method for supporting point to multi-point network interface by IS-IS dynamic routing protocol |
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| CN101453467A CN101453467A (en) | 2009-06-10 |
| CN101453467B true CN101453467B (en) | 2012-07-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106789673B (en) * | 2016-04-22 | 2020-11-20 | 新华三技术有限公司 | Link state synchronization method and device |
| CN107493237A (en) * | 2017-07-28 | 2017-12-19 | 江西山水光电科技股份有限公司 | The DCN of point-to-multipoint and multiple spot and Mulit-point Connection is from circulation method |
| CN110730126B (en) * | 2019-10-22 | 2022-07-22 | 迈普通信技术股份有限公司 | Link aggregation system, data frame sending or receiving method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802641A (en) * | 2003-04-09 | 2006-07-12 | 思科技术公司 | Selective diversion and injection of communication traffic |
| CN1838664A (en) * | 2005-03-22 | 2006-09-27 | 杭州华为三康技术有限公司 | Method for solving network suboptimum route problem |
| CN101036349A (en) * | 2004-11-15 | 2007-09-12 | 思科技术公司 | CSNP cache for efficient periodic CSNP in a router |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802641A (en) * | 2003-04-09 | 2006-07-12 | 思科技术公司 | Selective diversion and injection of communication traffic |
| CN101036349A (en) * | 2004-11-15 | 2007-09-12 | 思科技术公司 | CSNP cache for efficient periodic CSNP in a router |
| CN1838664A (en) * | 2005-03-22 | 2006-09-27 | 杭州华为三康技术有限公司 | Method for solving network suboptimum route problem |
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