MSTP-based (Multiple Spanning Tree Protocol) network topology convergence method, equipment and system

Abstract

The embodiment of the invention discloses an MSTP-based (Multiple Spanning Tree Protocol) network topology convergence method. The method comprises the steps that: network equipment acquires a BPDU (Bridge Protocol Data Unit) message carrying STP (Spanning Tree Protocol) information through a target port and updates the STP information of the target port; the network equipment compares common root information of the STP information of other receiving ports with the common root information contained in the acquired STP information and compares domain rood information of the STP information of other receiving ports with the domain root information contained in the acquired STP information; and the network equipment updates the overhead of external routes of the receiving ports (which are consistent through comparison) in the other ports into overhead indicated by external route overhead information contained in the acquired STP information. Correspondingly, the embodiment of the invention also discloses network equipment and a system. By the MSTP-based network topology convergence method, the network equipment and the system, invalid BPDU messages can be avoided in an MSTP multi-domain networking environment with complicated networks, so that rapid convergence can be carried out among the network equipment.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a method, equipment and system for the convergence of a multiple spanning tree protocol network topology. Background technique [0002] The Spanning Tree Protocol (STP) is a basic protocol in Layer 2 network equipment. The main function of this protocol is to ensure that there will be no loops in the network and to provide redundant backup links. In a more complex network environment of Multiple Spanning Tree Protocol (MSTP) and multiple domains, due to the defects of the current MSTP standard, invalid Bridge Protocol Data Unit (BPDU) information may be caused It remains in the topology, causing the devices to fail to converge quickly until the old BPDU information becomes invalid. The details are as follows: [0003] A, B, and C network devices form a ring network at the convergence layer, C, D, and E network devices form a ring network at the access layer, and A, B, C, D, and E...

AI Technical Summary

Problems solved by technology

[0008] To sum up, in an MSTP multi-domain networking environment with a relatively complex network, i

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