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Method and device for updating multicast routing table item in multilink transparent internet network

A technology of transparent interconnection and update method, applied in the field of communication, can solve the problem that multi-purpose packets cannot be forwarded normally, and achieve the effect of ensuring normal forwarding

Active Publication Date: 2012-11-14
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, according to the processing method of the prior art, RB4 will delete the original multicast routing table entry. Multi-purpose packets cannot be forwarded normally

Method used

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  • Method and device for updating multicast routing table item in multilink transparent internet network
  • Method and device for updating multicast routing table item in multilink transparent internet network
  • Method and device for updating multicast routing table item in multilink transparent internet network

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0020] In the embodiment of the present invention, a method for updating multicast routing entries in a TRILL network is proposed. Any multicast tree in the TRILL network includes a plurality of RBs. The method for forwarding a destination message by any BR is specifically as follows. When the link between the current RB and the root of the multicast tree is unreachable, effective multicast entries can be quickly recalculated to ensure normal forwarding of multi-purpose packets.

[0021] see figure 2 , figure 2 It is a flowchart of a method for updating a multicast routing table entry in an embodiment of the present invention. The specific steps are:

[0022] In step 201, any RB checks whether the link between itself and the root o...

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PUM

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Abstract

The invention discloses a method for updating a multicast routing table item in a multilink transparent internet network. The method comprises the steps as follows: when the RB detects that a link between an RB (routing bridge) and a multicast tree root of a multicast tree is not accessible, generating an SPF (shortest path first) tree by using the RB with the accessible link as a temporary tree root according to the recorded path information, and traversing the SPF tree, then generating and updating the multicast routing table item by using the multicast tree root. Based on the same inventive concept, the invention further discloses a device. When the link between the current RB and the multicast tree root is not accessible, the effective multicast table item can be quickly re-calculated so as to guarantee normal retransmission of multi-purpose messages.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a method and device for updating multicast routing table items in a Transparent Interconnection of Multiple Links (TRILL) network. Background technique [0002] TRILL is a data link layer (L2) networking standard recommended by the IETF. TRILL is of high importance as large data centers begin to leverage new technologies such as Fiber Channel over Ethernet (FCoE) to converge storage transport and IP transport onto Ethernet connections, while standard Spanning Tree Protocol (STP) will no longer be suitable Expansion of converged networks or hyperscale data centers. As FCoE adoption increases, enterprise storage will start joining other protocols on the IP network. From a storage perspective, over time, TRILL can at least replace the ubiquitous STP protocol on L2 networks. [0003] In a TRILL network, each routing bridge (RB) calculates one multicast distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56
Inventor 邹文宇
Owner XINHUASAN INFORMATION TECH CO LTD
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