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Update method and device for multicast list in the change of switching network topology

A technology for exchanging network and multicast entries, which is applied in the field of network communication, and can solve problems such as long periods, inability to update multicast entries quickly, long interruption of multicast traffic, etc.

Inactive Publication Date: 2007-08-01
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the period for routers to send Query messages is relatively long, usually two minutes, and the recovery process of multicast entries in this mode takes a long time. Therefore, when the MSTP link of the switching network changes, even if the MSTP link The path can be quickly switched, and the multicast flow will be interrupted for more than two minutes, so the topology of the switching network can be quickly converged, but the multicast entries cannot be updated quickly, which will cause the multicast traffic to be interrupted for a long time

Method used

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  • Update method and device for multicast list in the change of switching network topology
  • Update method and device for multicast list in the change of switching network topology
  • Update method and device for multicast list in the change of switching network topology

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0031] The structure of the transmission bridge switch of a kind of switching network of the present invention is shown in Figure 1, comprises topology detection unit 11, topology change message generation unit 12, message processing unit 13, port role setting unit 14, multicast management unit 15 and registration message generating unit 16. Wherein the topology detection unit 11 is connected with the topology change message generation unit 12; the message processing unit 13 is connected with the port role setting unit 14; the multicast management unit 15 is respectively connected with the message processing unit 13, the port role setting unit 14 and the registration message The text generation unit 16 is connected.

[0032]The topology detection unit 11 determines whether the topology of the switching network changes by dete...

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Abstract

The disclosed update method for multicast item when SN topology varying comprises: when detecting the SN topology varying or receiving topology-variation message, the root bridge switch sends configuration message to every transmission bridge switch; then, the said transmission bridge switch re-sets port role and sends register message with multicast information to the superior switch; finally, every switch in SN updates self multicast item. This invention is fast and has no effect to user.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for updating multicast table items when the topology of the switching network changes. Background technique [0002] IGMP (Internet Group Management Protocol, Internet Group Management Protocol) runs between the host and the network device directly connected to the host, and is a protocol used by the IP host to report the membership of the multicast group. Through the IGMP protocol, on the one hand, the host can notify the local network device that it wants to join and receive the information of a specific multicast group through the IGMP protocol; on the other hand, the network device periodically queries the members of a known group in the LAN through the IGMP protocol is active. The main function of the IGMP protocol is to solve the problem of occupying bandwidth when broadcasting on the network. In the network, when sending broadcast inform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/56H04L29/06H04L12/18H04L12/24H04L45/02
Inventor 周万
Owner NEW H3C TECH CO LTD
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