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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., can solve problems such as speeding up the processing speed of multicast-related protocols, achieve high real-time performance, reduce delayed effect

Inactive Publication Date: 2011-10-26
ZTE CORP
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  • 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
Comparison scheme
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Embodiment Construction

[0031] The invention sets a group drop (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 flow of this group reaches each node, because the multicast forwarding table is empty and there is no forwarding object, the multicast flow is discarded content. At the same time, in the DROP mode, each node is added to the multicast path of the multicast forwarding table of the group, and its own multicast forwarding table is stored in each node, and the multicast path is set to unknown multicast packets. Forwarding mode. The above settings are established statically and do not require the participation of the protocol.

[0032] In this way, the multicast forwarding table of each node always exists, and the multicast stream always exists on the Ethernet ring network. When a node local multicast user joins ...

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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 thatwhen 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 a multicast link of an Ethernet ring network. Background technique [0002] As a metropolitan 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 recovery time of traditional data networks. It can provide 50ms fast protection feature, 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 transformation of broadband access convergence network. [0003] For a large number of key multicast applications such as IPTV (Internet protocol television) services, etc., the Ethernet ring network has many natural advantages: Compared with the traditional multi-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/42H04L12/18
Inventor 高辉毕连宏曲延锋
Owner ZTE CORP
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