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Method and device for preventing multicast traffic congestion

A traffic congestion and multicast technology, applied in the field of network communication, can solve problems such as multicast traffic congestion, and achieve the effect of reducing forwarding pressure and alleviating multicast traffic congestion.

Active Publication Date: 2018-03-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in a PIM multicast network, with the increase of multicast services, multiple multicast traffic of different multicast groups will converge to the same PIM router at the same time. Insufficient, there will be multicast traffic congestion caused by insufficient bandwidth resources

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  • Method and device for preventing multicast traffic congestion
  • Method and device for preventing multicast traffic congestion
  • Method and device for preventing multicast traffic congestion

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Embodiment Construction

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

[0020] The method provided by the invention includes figure 1 Process shown:

[0021] see figure 1 , figure 1 The flow chart of the method provided by the present invention. like figure 1 As shown, the process may include the following steps:

[0022] Step 101, when the PIM router (taking router R1 as an example) detects that the multicast forwarding interface in the local multicast forwarding entry is congested with multicast traffic, it sends the first notification message to the downstream through the multicast forwarding interface PIM router (take router R2 as an example).

[0023] Here, the downstream PIM router of the router R1 is the router R2, which is essentially the PIM router connected to the router R1 through the multicast forwar...

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Abstract

The present application provides methods and devices for preventing multicast traffic congestion. When multicast traffic congestion occurs on the local multicast forwarding outbound interface of the upstream PIM router, the downstream PIM router will cause a multicast traffic that originally reached the downstream PIM router through the upstream PIM router to no longer be forwarded through the upstream PIM router. This reduces the forwarding pressure on the multicast forwarding outgoing interface of the upstream PIM router where the multicast traffic is congested, and effectively relieves the multicast traffic congestion of the upstream PIM router.

Description

technical field [0001] The present application relates to network communication technology, in particular to a method and device for preventing multicast traffic congestion. Background technique [0002] The multicast routing protocol is a routing control protocol for forwarding multicast packets on the third layer of the IP network. The function of the multicast routing protocol is to provide routing information for the forwarding of multicast packets, that is, to specify to which multicast receivers the received multicast packets should be forwarded. [0003] In a Protocol Independent Multicast (PIM: Protocol Independent Multicast) network, a multicast distribution tree is usually established in reverse from the multicast receiver side router to the multicast source side router by means of a multicast routing protocol, and the multicast traffic follows the established The multicast distribution tree is forwarded to multicast receivers hop by hop. [0004] However, in a P...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/801H04L12/761H04L45/16
CPCH04L47/12H04L49/201
Inventor 周绪龙孙策王伟
Owner NEW H3C TECH CO LTD