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Method and system for multicast equal-cost multipath load sharing

A technology of equal-cost multi-path and load sharing, which is applied in the direction of transmission system, digital transmission system, branch office to provide special service devices, etc., and can solve problems such as heavy network load, inability to realize ECMP load sharing, and shortage of bandwidth resources

Inactive Publication Date: 2017-06-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, at present, since the SPBV technology is only applicable to a single ECT Algorithm, ECMP load sharing of multicast streams within the SPT Region cannot be realized
Moreover, as the proportion of multicast traffic in the network becomes larger and larger, there will be more and more multicast sources. If each multicast flow adopts the forwarding method of the existing SPBV technology, the network load will be too large , Bandwidth resource shortage

Method used

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  • Method and system for multicast equal-cost multipath load sharing
  • Method and system for multicast equal-cost multipath load sharing
  • Method and system for multicast equal-cost multipath load sharing

Examples

Experimental program
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Embodiment 1

[0078] In this embodiment, the multicast address 1 and the multicast address 2 are registered on the egress switch by means of dynamic registration (MMRP), so as to realize SPBV ECMP load sharing. image 3 It is a schematic diagram of paths formed by multicast address-based SPBV ECMP load balancing in the embodiment. combine image 3 , the method of SPBV ECMP load sharing in this embodiment, such as Figure 4 shown, including the following steps:

[0079] Step 401: When ECMP load sharing is required, the egress switches SW6 and SW7 and the ingress switch SW1 on the edge of the SPT Region register multicast address 1 and multicast address 2 in the way of MMRP;

[0080] Specifically, the destination host sends out a multicast stream that expects to receive the multicast address as multicast address 1, so it sends out an MMRPDU requesting to join the multicast group, and the multicast source also sends out an MMRPDU requesting to join the multicast group ;

[0081] Port P1 of...

Embodiment 2

[0098] In this embodiment, the manual registration method is used to register the multicast address 1 and the multicast address 2 on the ingress and egress switches, so as to realize SPBV ECMP load sharing. The path formed by the multicast address-based SPBV ECMP load balancing in this embodiment is similar to the path in Embodiment 1. combine image 3 , the method of SPBV ECMP load sharing in this embodiment, such as Figure 5 shown, including the following steps:

[0099] Step 501: When ECMP load balancing is required, egress switches SW6 and SW7 and ingress switch SW1 on the edge of the SPT Region register multicast address 1 and multicast address 2 by manual registration;

[0100] Step 502: SW1, SW6, and SW7 establish a one-to-one correspondence between each multicast address and the ECT Algorithm according to the pre-configured corresponding method or using the Hash Algorithm, and then execute Step 503;

[0101] Specifically, multicast address 1 corresponds to ECT Algo...

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Abstract

The invention discloses a method and system for ECMP load sharing, comprising: when ECMP load sharing is required, an ingress switch connected to more than one multicast source, and a multicast switch expected to receive the multicast from the more than one multicast source The egress switches connected to the destination host of the flow all register the multicast addresses corresponding to the more than one multicast source, and the ingress switches and the egress switches all establish a one-to-one correspondence between each of the multicast addresses and the ECT algorithm; The ingress switch and the egress switch flood the corresponding relationship between each multicast address and the corresponding ECT algorithm in the entire SPT Region, so that different ECT algorithms generate corresponding equivalent SPTs, and on the generated equivalent SPTs forming a multicast forwarding path corresponding to the multicast address; the ingress switch and the egress switch forward the multicast flow corresponding to each multicast address according to the generated multicast forwarding path corresponding to the corresponding equivalent SPT. The invention can effectively implement ECMP load sharing.

Description

technical field [0001] The present invention relates to Shortest Path Bridging (SPB, Shortest Path Bridging) technology, in particular to an ECMP (Equal Cost Multiple Paths, Equal Cost Multiple Paths) load sharing method and system. Background technique [0002] Currently, the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers), a standard organization, has formulated a set of SPB technologies in the standard IEEE 802.1aq to implement shortest path forwarding of unicast and multicast data. The entire SPB network may include more than one Shortest Path Tree (SPT, Shortest PathTree) domain (Region). Among them, the formation mechanism of the SPT Regions is similar to the formation mechanism of the multiple spanning tree (MST, Multiple Spanning Tree) domain (Region) of the Multiple Spanning Tree Protocol (MSTP, Multiple Spanning Tree Protocol) formulated by the existing standard IEEE 802.1Q. The SPT Regions are connected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04L12/18H04L45/16
Inventor 强海霞肖敏
Owner ZTE CORP