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A multiple spanning tree protocol bridge priority coordination method

A multiple spanning tree protocol and spanning tree protocol technology, applied in the field of communication, can solve problems such as network turbulence, loops, and asynchronous information dissemination, and achieve the effects of improved convergence speed, simple scheme, and easy implementation

Inactive Publication Date: 2007-02-28
HUAWEI TECH CO LTD
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Problems solved by technology

[0010] The purpose of this patent is to propose a method for coordinating the priority of multiple spanning tree protocol bridges to solve the problem of network turbulence and loops caused by asynchronous information dissemination when the priorities of multiple spanning tree bridges in the network change.

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  • A multiple spanning tree protocol bridge priority coordination method
  • A multiple spanning tree protocol bridge priority coordination method
  • A multiple spanning tree protocol bridge priority coordination method

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[0026] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0027] In the switching network, the MAC address of each switching device is unique. If a device finds that the MAC address is the same but the bridge priority is different during the topology learning process through the MSTP protocol, there must be network information propagation. Inconsistent situations.

[0028] The core idea of ​​the present invention is to coordinate the bridge priority information on the port to form a consistent priority after the switch receives the spanning tree protocol message and before entering the PRS (Port Role Selection state machine) state machine role calculation. level, so that each bridge MAC address corresponds to a unique bridge priority.

[0029] As shown in Figure 3, the present invention specifically comprises the following steps:

[0030] a. Take out all bridge IDs in the message;

[0031] Th...

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Abstract

The invention relates to the method for realizing bridge priority level information coordination of boundary ports for multiple spanning tree domain, wherein the bridge priority level information is coordinated on the ports after the switchboard receives the spanning tree protocol messages and before entering the PRS phase machine role, thus enabling each port form a consist cognition for the bridge priority level. The method according to the invention can substantially increase the convergence rate for the overall network topology.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for realizing priority coordination of boundary port information in multiple spanning tree domains. technical background [0002] Standards 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 virtual local area networks (VLAN, Virtual Local AreaNetwork), The IEEE802.1s Draft14 draft further proposes a multiple spanning tree protocol, that is, MSTP (Multiple Spanning Tree Protocol). IEEE802.1s divides one or more switching devices into different MST domains, and maintains multiple spanning tree instances (MSTIs) in one domain to allow data packets of different VLANs to be forwarded according to their respective paths, and between all domains They are connected in series through a common spanning tree (CST) to ensure the connectivity o...

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Application Information

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IPC IPC(8): H04L12/24H04L29/06H04L12/16
Inventor 陈锋汪勇陈刚苏兴山
Owner HUAWEI TECH CO LTD
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