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Fast transferring method and exchanger

A switch and border switch technology, applied in the field of virtual local area network, can solve the problems that affect the overall performance of VLAN connectivity, and cannot quickly migrate multiple spanning tree instances, so as to achieve the effect of improving the overall performance

Active Publication Date: 2009-02-11
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, if a new VLAN is newly created and a corresponding multiple spanning tree instance MSTI is newly activated for this purpose, then the multiple spanning tree instance can only be quickly migrated within the domain, and must follow the MSTP protocol between domains. According to the protocol, the forwarding state can only be entered after a delay of 30 seconds, which affects the overall performance of VLAN connectivity.
[0007] It can be seen that the existing technology is still unable to quickly migrate multiple spanning tree instances between domains

Method used

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] The basic idea of ​​the present invention is: when the MSTI is newly activated, the downstream MST domain border switch that receives the handshake request message will return the handshake response message to the upstream MST domain border switch. In this way, the upstream MST domain border switch can migrate the newly activated MSTI to the forwarding state, so as to achieve the purpose of fast migration.

[0047] figure 1 It is a flow chart of realizing fast migration between domains in the present invention. Such as figure 1 As shown, when the corresponding MSTI is newly activated, the method for implementing fast migration between domains may include the following steps:

[0048] Step 101: The downstream MST domain border sw...

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Abstract

A quick-shifting method includes receiving handshake request message on newly activated MSTI from up-stream boundary exchange board by down-stream MST domain boundary exchange board between MST domains when MSTI is newly activated then returning back handshake response message, shifting newly activated MSTI to be retransmission state when handshake response message is received by up-stream MST domain boundary exchange board.

Description

technical field [0001] The invention relates to the technology in the field of virtual local area network, in particular to a fast migration method and a switch. Background technique [0002] Virtual Local Area Network (VLAN, Virtual Local Area Network) is a technology that realizes a virtual workgroup by logically dividing devices in a local area network into network segments. In virtual local area network networking, because the switch in the layer 2 network cannot specify how many times the message can be forwarded like the router, once there is a loop in the network, it will cause the message to circulate and proliferate continuously in the loop, resulting in a broadcast storm. [0003] In this case, Spanning Tree Protocol (STP, Spanning Tree Protocol) came into being. The STP protocol is a layer-2 management protocol. Devices running this protocol can discover loops in the network by exchanging information with each other, and properly block some ports to eliminate loo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/56H04L29/06H04L12/44H04L12/937
Inventor 薛聪赵里遥
Owner NEW H3C TECH CO LTD