Method and system for removing ring identification nonmatched message on RPR ring network

Abstract

A method for separating message with non-matched ring identification from RPR ring network includes revising identification information of message with non-matched ring identification on ring network, carrying out judgment on identification information of said message first when node on ring network is passed by said message and directly lifting off said message from ring network if said message is in according with pre-confirmed lift-off condition. The system used for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to a method and a system for stripping messages whose ring identifiers are different (that is, do not match) the ring directions on an RPR ring network, and belong to the technical field of two-layer ring networks. Background technique [0002] RPR (Resilient Packet Ring, Resilient Packet Ring) technology is a ring network technology based on Layer 2. It adopts a bidirectional ring network topology and is divided into an inner ring and an outer ring (also called ring 0 and ring 1). The inner ring and the outer ring can be used at the same time, which improves the bandwidth utilization rate of the ring network compared with SDH. RPR technology provides flexible topology protection and switching. When the ring network fails, the switching can be completed within 50ms, ensuring data paths between nodes on both sides of the fault point. [0003] The RPR ring network can support up to 255 nodes. The message format is as follows: [...

AI Technical Summary

Problems solved by technology

Therefore, there will be some packets that are detoured back to the opposite ring direction when the fault occurs, and are still transmitted on the opposite ring direction when the fault recovers. Since the ring identifiers of these packets are different from the currently transmitted ring direction, the ttl will not be reduced. 1 operation, so it cannot be stripped due to ttl=0, and it is always forwarded on the ring network, occupying the ring network bandwidth

[0013] To sum up, when the ring network fault is eliminated, some packets on the ring network that are detoured back to another ring direction are still on the opposite ring direction. (Ring ID) is different from the ring direction of the current data transmission and cannot be stripped from the ring network. These packets will always occupy the ring network bandwidth, resulting in a smaller effective bandwidth on the ring network.

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