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Switching network multicast routing method and system

A switching network and routing technology, applied in the field of network switching, can solve problems such as occupying processor resources, and achieve the effects of improving robustness, avoiding lost cells, and improving stability and reliability.

Active Publication Date: 2019-07-09
SANECHIPS TECH CO LTD
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Problems solved by technology

But this method of software detection consumes a lot of processor resources

Method used

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  • Switching network multicast routing method and system
  • Switching network multicast routing method and system
  • Switching network multicast routing method and system

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Embodiment Construction

[0056] The solution of the embodiment of the present invention is mainly: from the destination line card to the source line card, transfer the reachable cells step by step to obtain multicast routing information, and finally identify which links can reach all network element chips in the switching network. The possible final access line card, multicast forwarding is only performed on these links, it can sense the link failure in the switching network in time and respond quickly, avoiding the loss of cells, so as to improve the performance of the switching network for multicast cell forwarding Stability and reliability without taking up additional cache resources.

[0057] Such as Figure 4 As shown, an embodiment of the present invention proposes a switching network multicast routing method, including:

[0058] Step S101, the destination line card transmits reachable cells to the source line card through the switching network step by step, and establishes multicast routing in...

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Abstract

The present invention relates to a switching network multicast routing method and system. The method comprises: the destination line card transfers the reachable cells to the source line card through the switching network step by step, and establishes a multicast routing in the network element chips of each level of the switching network. information; the network element chips at all levels select reachable links step by step according to the established multicast routing information, and forward the multicast cells from the source line card to the destination line card. The present invention obtains multicast routing information by transferring reachable cells step by step from the destination line card to the source line card, and finally identifies which links can reach all possible final access line cards in network element chips at all levels of the switching network , multicast forwarding is only carried out in these links, compared with the existing technology, it can detect the link failure in the switching network in time and respond quickly, avoiding the loss of cells, and greatly improving the switching network for multicast cell forwarding Stability and reliability improve the robustness of the switching network without occupying additional cache resources.

Description

technical field [0001] The invention relates to the technical field of network switching in large-capacity high-end routers, in particular to a multicast routing method and system for a switching network. Background technique [0002] A switching network refers to a network that completes cell switching in devices such as routers or switches, and finally realizes the exchange of communication messages through cell switching. In large-capacity high-end routers, in order to meet the requirements of switching capacity, a multi-level switching network is generally used. The three-level CLOS (Charles Clos) switching network is the most common and most studied multi-level interconnection switching network. [0003] Such as figure 1 as shown, figure 1 It is an example of a three-level CLOS network. The line card receives externally input data packets, completes data packet classification, traffic management, and cell slicing, and finally sends cells to the switching network. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L12/751H04L12/703H04L45/16H04L45/02H04L45/28
Inventor 吴涛仲建锋缪众林刘衡祁
Owner SANECHIPS TECH CO LTD
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