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

A multiple spanning tree protocol and network equipment technology, applied in the field of communication, can solve the problems of residual BPDU messages, network equipment can not quickly converge, etc.

CN102916885AActive Publication Date: 2013-02-06连邦网络科技服务南通有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-02-06

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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.
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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...

Examples

Embodiment Construction

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0036] figure 1 It is a schematic flowchart of a method for multi-spanning tree protocol network topology convergence provided by an embodiment of the present invention, such as figure 1 Shown, including:

[0037] 101. A network device obtains a BPDU message carrying STP information through a target port, and updates the STP information of the target port, where the STP information includes at least total root information, region root infor...