Election method and equipment for LSA conversion equipment

Abstract

The invention discloses an election method and device of an LSA conversion device. The election method of the LSA conversion device comprises the steps that (1) an ABR obtains information of the capacity of converting a seven-LSA into a five-LSA of the ABR; (2) when the ABR has the capacity of unconditionally converting a Type-7LSA into a Type-5LSA, the ABR is elected as the LSA conversion device; (3) when the ABR does not have the capacity of converting the Type-7LSA into the Type-5LSA, the ABR cannot be elected as the LSA conversion device; (4) when the ABR is qualified for converting the Type-7LSA into the Type-5LSA, and does not have the capacity of unconditionally converting the Type-7LSA into the Type-5LSA, whether an LSA received by the ABR is provided with a first identification is queried; (5) when the LSA is provided with the first identification, the ABR is not elected as the LSA conversion device; (6) when the LSA is not provided with the first identification, election is carried out among all ABRs corresponding to LSAs without second identifications to obtain the LSA conversion device. According to the election method and device of the LSA conversion device, the phenomenon that the ABR which does not have the capacity of converting the Type-7LSA into the Type-5LSA is elected to be the LSA conversion device can be avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for selecting an LSA (Link State Advertisement, Link State Advertisement) conversion device. Background technique [0002] OSPFv3 (Open Shortest Path First version 3, open shortest path first version 3) is an autonomous system internal routing protocol based on link state. text) to establish and maintain neighborly relationships. Furthermore, the LSA used to describe the link state is diffused among network devices forming a neighbor relationship, and each network device finally forms the same LSDB (LinkState Data Base, link state database). Further, routing calculation is performed on the basis of LSDB, routing information is generated and stored in RIB (Routing Information Base, routing information table), and the optimal route is selected from RIB, and the optimal reason is sent to FIB (Forwarding Information Base). Base, forwarding informa...

AI Technical Summary

Problems solved by technology

In the existing LSA conversion device election method, the following situation may occur: ABR is elected as the LSA conversion device. The ABR should be responsible for converting Type-7 LSAs to Type-5 LSAs, but the ABR is not capable of converting Type-7 5LSA capability; other ABRs capable of converting Type-7LSAs to Type-5LSAs were not elected as LSA conversion devices, resulting in no LSA conversion devices capable of converting Type-7LSAs to Type-5LSAs in the NSSA network, and thus unable Propagate LSAs in the NSSA network to other areas

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