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A method for quickly switching Ethernet loop network multicast link

A fast switching, Ethernet ring network technology, applied in ring networks, devices that provide special services in branches, data exchange through path configuration, etc. delayed effect

Inactive Publication Date: 2008-01-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the process of multicast protocol can be optimized and the processing speed of multicast-related protocols can be accelerated, the processing time is much longer than the control level of 50ms

Method used

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  • A method for quickly switching Ethernet loop network multicast link
  • A method for quickly switching Ethernet loop network multicast link
  • A method for quickly switching Ethernet loop network multicast link

Examples

Experimental program
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Embodiment Construction

[0029] The present invention sets a drop group (DROP) mode for each multicast group, and establishes an empty multicast forwarding table in each multicast node. In DROP mode, if no user joins, the content of the multicast forwarding table of each node is empty. When the multicast stream of this group reaches each node, because the multicast forwarding table is empty and there is no forwarding object, the multicast stream is discarded. content. At the same time, in DROP mode, each node is added to the multicast path of the multicast forwarding table of the group, and each node stores its own multicast forwarding table, and the multicast path is set to the unknown multicast packet all forwarding mode. The above settings are statically established and do not require the participation of the protocol.

[0030] In this way, the multicast forwarding table of each node always exists, and the multicast stream always exists on the Ethernet ring network. When the local multicast user ...

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PUM

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Abstract

The method comprises: setting a group-discarded mode for each multicast group in the Ethernet; under said group-discarded mode, creating a multicast forwarding table for each multicast node; adding the ring-network port of each node into the multicast forwarding table of the node; the ring-network ports of all nodes forms a multicast path of Ethernet; while the users or links in the Ethernet vary, the multicast link is switched at the node relating to the variation. The invention introduces a group-discarded mode under which the multicast table of each node in Ethernet always exists such that when needing to make link switch, the multicast forwarding table doesn't need to be made any more and the notice to main node is also not to be required so as to reduce the delay of switching the multicast links.

Description

technical field [0001] The invention relates to an automatic protection technology of an Ethernet ring network, in particular to a method for fast switching of an Ethernet ring network multicast link. Background technique [0002] As a metro Ethernet technology, the Ethernet ring network is being used more and more widely. The Ethernet ring network solves the problems of weak protection capability, large delay, and long fault recovery time of traditional data networks. It can provide 50ms fast protection characteristics, improve service quality and network reliability, and is compatible with traditional Ethernet protocols. It is a metropolitan area. An important technical choice and solution for the optimization and reconstruction of broadband access convergence network. [0003] For a large number of key multicast applications such as IPTV (Internet protocol television) services, the Ethernet ring network has many natural advantages: Each downstream port needs to replicat...

Claims

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Application Information

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IPC IPC(8): H04L12/42H04L12/18
Inventor 高辉毕连宏曲延锋
Owner ZTE CORP
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