Exchange network multicast route method and system

A switching network and routing technology, applied in the field of network switching, can solve the problem of occupying processor resources, and achieve the effect of improving robustness, improving stability and reliability, and avoiding lost cells

Active Publication Date: 2014-12-24
SANECHIPS TECH CO LTD
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Problems solved by technology

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

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  • Exchange network multicast route method and system
  • Exchange network multicast route method and system
  • Exchange network multicast route 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 invention relates to an exchange network multicast route method and system; the method comprises the following steps: a target line card transmits reachable cells step by step to a source line card through the exchange network, thus setting up multicast route information in network element chips of each level in the exchange network; the network element chips of each level selects reachable links step by step so as to forward the multicast cells of the source line card to the target line card according to the multicast router information set up by the network element chips of each level. The target line card transmits reachable cells step by step to the source line card so as to obtain the multicast route information, so the links capable of reaching all possible final access line cards can be indentified in network element chips of each level in the exchange network, and multicast transfer is only carried out in the links; compared with the prior art, link faults in the exchange network can be timely sensed and responded, cells cannot be lost, thus greatly improving exchange network stability and reliability for multicast cell transfer, improving robustness of the exchange network, and in addition, no extra caching resource is needed.

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 Applications(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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