Ether ring redundancy protection method

Abstract

This invention provides a method for protecting ether loop circuit redundancy avoiding network storm resulted from loop circuit to make the topology converge quickly. A master device receives its sent ether loop circuit detection control message correctly in definite time to determine the existence of the redundancy, if it exists, the master device blocks the required protected VLAN message. The method checks the break of the ether circuit with devices on the circuit and sends control message about the break, the master device removes the data message block when receiving the control message of the break .This invention can detect the topology variance quickly and process the packet blocking.

Description

Technical field: [0001] The invention belongs to the field of broadband network communication, in particular to a fast protection method for an Ethernet loop. Background technique: [0002] There is redundancy on many LANs or WANs, and there is a ring topology. Loops in the Ethernet environment may cause network storms. To avoid this phenomenon, it is necessary to perform corresponding packet blocking on the ring to cut off the ring. We hope that when a loop occurs, the redundant loop can be cut off as soon as possible; when the redundant loop no longer exists, the original blockage can be quickly unblocked. In short, after the topology change of the ring, it is our goal to complete the convergence in a short time. [0003] The Spanning Tree Protocol (Spanning Tree Protocol) as we know it may take a long time for consistent recovery in a topology change event. The new Rapid Spanning Tree Protocol (Rapid Spanning Tree Protocol) is recognized as faster. However, its consi...

AI Technical Summary

Problems solved by technology

[0003] The Spanning Tree Protocol (Spanning Tree Protocol) as we know it may take a long time to recover consistently in a topology change event

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