Method and device for realizing multicast load sharing

A load sharing and multicast technology, applied in the communication field, can solve problems such as DR or querier pressure, and achieve the effect of avoiding heavy load

Inactive Publication Date: 2010-02-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a method and device for realizing multicast load sharing, so as to solve the problem of excessive pressure on DR or querier

Method used

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  • Method and device for realizing multicast load sharing
  • Method and device for realizing multicast load sharing
  • Method and device for realizing multicast load sharing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The following describes Embodiment 1: PIM-SM DR load sharing

[0055] Assuming that in Example 1 Figure 5 In the configuration, PIM SM is configured on all interfaces, IGMP is configured on the interface connecting RTD / RTE to the receiver, and RTB and RTD are respectively interface-level DRs of the network segment where they are located.

[0056] Scenario 1: Source DR load balancing 1

[0057] 1. The multicast server sends 3 multicast data sources, configure RTA to serve G1, and RTB to serve G2 and G3.

[0058] 2. After RTA receives the data of these groups, on intf4, according to the longest matching principle introduced above, elect G1 among them as DR, so G1 sends a registration message to its corresponding RP.

[0059] 3. Similarly, RTB sends registration messages to their corresponding RPs for G2 and G3.

[0060] Here is a more specific example of the scenario:

[0061] 1) Configure RTD's intf2 (IP address 10.1.1.2) as 225.1.0.0 / 16 service, RTE's intf1 (IP add...

Embodiment 2

[0084] The following describes the second embodiment: PIM-SSM DR load sharing

[0085] Assuming that in the second embodiment Figure 5In this configuration, PIM SSM is configured on all interfaces, IGMP is configured on the interface connecting RTD / RTE to the receiver, and RTD is the interface-level DR of the network segment where it is located.

[0086] For SSM, it is forwarded directly through SPT without RP.

[0087] Scenario 1: Receiver DR Load Balancing 1

[0088] 1. HostA, HostB, and HostC send IGMP V3 REPORT to join different source groups (S1, G1), (S1, G2), (S1, G3). Configure RTD to serve G1, and RTE to serve G2 and G3.

[0089] 2. RTD receives these IGMP V3 REPORTs, becomes the DR of group G1, sends (S, G) join to its corresponding source, obtains the data and forwards it to the receiving end.

[0090] 3. The RTE sends (S, G) join to the corresponding source for the groups G2 and G3, obtains the data and forwards it to the receiving end.

[0091] Scenario 2: D...

Embodiment 3

[0095] Embodiment 3 is introduced below: IGMP querier load sharing

[0096] Assuming that in Example 3 Figure 5 In the configuration, only IGMP is configured on the interface connecting RTD / RTE to the receiving end, and PIM-SM / SSM is configured on all other interfaces, and RTD is the IGMP querier in the network segment where it is located.

[0097] When the interface is not configured with PIM-SM / SSM, the router on the shared network segment elects an IGMP querier to be responsible for the data forwarding of this network segment.

[0098] Scenario 1: Querier Load Balancing 1

[0099] 1. HostA, HostB, and HostC send IGMP V2 / V3 REPORT to join different groups G1, G2, and G3. Configure RTD to serve G1, and RTE to serve G2 and G3.

[0100] 2. RTD receives these IGMP V2 / V3 REPORTs, becomes the IGMP querier of group G1, sends (*, G) join to its corresponding RP or sends (S, G) join to its corresponding source, obtains data and Forward to the receiving end.

[0101] 3. Similarl...

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PUM

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Abstract

The invention discloses a method and a device for realizing multicast load sharing. The method comprises the following steps: determining a corresponding relation between a router and a multicast group set, wherein the multicast group set comprises at least one multicast group; selecting the router corresponding to the set of the multicast group as a designated router; and processing service of the multicast group by the designated router. The device and the method provide a load sharing solution based on DR for routers of a receiving terminal and a multicast source terminal, and achieve balance load of service of the multicast groups among the multiple routers so as to prevent the problem that single DR is over loaded.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for realizing multicast load sharing in the technical field of multicast. Background technique [0002] IP multicast refers to sending data packets to a certain subset of nodes in the network in the form of best-effort delivery in an IP network. This subset is called a multicast group. The basic idea of ​​IP multicast is that the source host only sends one copy of data, and the destination address in this data is the address of the multicast group. All receivers in the multicast group can receive the same data copy, and only multicast Hosts in the group (target hosts) can receive the data, but other hosts in the network cannot. [0003] Sparse mode Protocol Independent Multicast-Parse Mode (PIM-SM) and Source-Specific Multicast (SSM) are two commonly used intra-domain multicast modes. For PIM-SM, its working process can be summarized as: neighbor disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/18H04L29/06
CPCH04L47/10H04L47/125H04L47/15H04L12/18
Inventor 段少雄梁铷苏海洋
Owner HUAWEI TECH CO LTD
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