Multiple generation tree protocol based domain roots switching method

A multiple spanning tree protocol and its implementation method are applied in the field of network communication to achieve the effect of avoiding temporary loops
CN1510873AInactive Publication Date: 2004-07-07HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2004-07-07
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

An implement method for domain root switching based on Multiple Spanning Tree Protocol (MSTP), this method is: when taking CIST domain to switch, after the precedence information of each port in the exchanger renews by PIM, trigger the switching procedure of handling CIST domain root corresponding to MSTI, to ensure each of MSTI in MST domain knows the information about CIST domain root switching. This method can avoid MSTI comes out temporary loop circuit due to CIST domain root changing.
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Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to a method for implementing domain root switching based on multiple spanning tree protocols. Background technique

[0002] IEEE802.1d and IEEE80.1w provide solutions to avoid data loops and realize redundant link backup in simple switching networks; in order to adapt to large complex switching networks with multiple VLANs (Virtual Local Area Networks, Virtual Local Area Network), IEEE802 The .1s Draft14 draft further proposes MSTP (Multiple Spanning Tree Protocol, Multiple Spanning Tree Protocol), which divides one or more switching devices into different MST (Multiple Spanning Tree) domains, and maintains multiple MSTI (Multiple Spanning Tree Protocol) domains in one domain. Spanning tree instance), each MSTI has a different ID (identification), and each MSTI allows data packets of different VLANs to be forwarded according to their own paths. The instances are compl...

Claims

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