Method and device for inhibiting multicast router from oscillating

Abstract

The invention discloses a method and a device for inhibiting a multicast router from oscillating, wherein the device comprises an output interface statistic module, a routing table statistic module and a synchronous module; the method comprises the following steps of counting the change condition of each output interface in a multicast router table; judging if the output interfaces satisfy a first oscillation inhibiting condition according to a first oscillation inhibiting policy and inhibiting synchronization of the output interface which satisfies the first oscillation inhibiting condition when synchronizing the multicast router table; counting the change condition of each route table entry in the multicast router table; judging if the route table entries satisfy a second oscillation inhibiting condition according to a second oscillation inhibiting policy and inhibiting synchronization of the route table entry which satisfies the second oscillation inhibiting condition when synchronizing the multicast router table. After the invention is adopted, the oscillation of the multicast router or the output interfaces of the multicast router is inhibited effectively so that the oscillation of multicast flow is inhibited, the ineffective consumption of device resources is reduced and the resource utilization rate is improved.

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a method and equipment for suppressing multicast route oscillation. Background technique [0002] IP multicast technology realizes point-to-multipoint efficient data transmission in IP network, can effectively save network bandwidth and reduce network load, so in real-time data transmission, multimedia conference, data copy, IPTV (Internet TV), games and simulation And many other aspects have a wide range of applications. With the development of network and multicast services, their stability, safety and reliability have attracted more and more public attention. [0003] The main situations that lead to multicast route flapping are as follows: [0004] 1) The multicast routing itself changes frequently or is frequently added or deleted; [0005] 2) The incoming interface of the multicast route changes frequently; [0006] 3) Outbound interfaces of multicast routes ar...

AI Technical Summary

Problems solved by technology

[0005] 2) The incoming interface of the multicast route changes frequently;

[0006] 3) Frequent addition or deletion of multicast routing outbound interfaces

First of all, it will have a serious impact on the stability of multicast traffic, which may cause intermittent traffic and make user experience worse; secondly, route oscillation may cause some unnecessary multicast traffic to be sent, thereby causing network bandwidth Waste of resources; thirdly, routing oscillation will consume a lot of resources of the device itself, occupying precious processor resources and message channels of the device, in addition to affecting the multicast service itself, it will also seize resources with other services, thereby affecting other services. Stable operation

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