Method for solving stability of OSPF protocol at multi-neighbour high route

Abstract

The method includes: The preset receiving rate of message is dynamically adjusted and the current receiving rate is calcualted according to the current volume of neighbour retransmission list when OSPE protocol receives refreshing message. The refreshing message is discarded if the current receiving rate of message is quicker than the preset receiving rate for raising greatly stability of OSPE protocol at the condition of multineighbour and big route.

Description

Technical field [0001] The invention belongs to the field of computer network communication, and specifically relates to a stability solution method for forming a large-scale backbone network by using the OSPF protocol. Background technique [0002] OSPF is a link-state-based dynamic routing technology that enhances scalability through hierarchical area division. An AS can be divided into multiple areas, and multiple routers can belong to the same area. The router at the border of two areas is called an area border router, and this router saves topology database information for each area. Routes between different areas are transmitted through network summary routing information, which is called inter-area routes. The entire OSPF autonomous domain can distribute external routing information, which usually includes routing information learned by BGP or RIP routing protocols. The OSPF protocol can quickly detect changes in the network topology (such as changes in the state o...

AI Technical Summary

Problems solved by technology

At this time, if the following router establishes an adjacency relationship with the backbone router, the backbone router may not be able to normally process the Hello packets that maintain the adjacency relationship, that is, it cannot send Hello packets in time or receive Hello packets in time for further processing. processing, resulting in the loss of the adjacency established by the previous router

After the following routers establish adjacency, the backbone router and the front router need to try to establish an adjacency again, which may lead to the loss of the adjacency established by the following routers.

In short, in such a situation, the adjacency relationship between the backbone router and the neighboring routers may be in a state of constant oscillation, and eventually the convergence state cannot be reached, which seriously affects the network performance of the router and the normal use of large-scale networks.

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