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Method and apparatus for static forwarding multicast data

A technology of multicast data and multicast forwarding table, applied in the field of communication, can solve the problems of consuming system resources of equipment and slow running of equipment, and achieve the effect of saving system resources, avoiding loss, and reducing the number of addresses

Inactive Publication Date: 2012-01-04
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the operation of the dynamic multicast routing protocol consumes a lot of system resources of the device. When there are many multicast routing entries, it will cause problems such as slow operation of the device.

Method used

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  • Method and apparatus for static forwarding multicast data
  • Method and apparatus for static forwarding multicast data
  • Method and apparatus for static forwarding multicast data

Examples

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Embodiment Construction

[0047] The core idea of ​​the present invention is to perform multicast forwarding in a specific application scenario by configuring static multicast forwarding table items in a multicast network with many multicast service applications and fixed receiver locations, without using a dynamic multicast routing protocol , saving unnecessary system resources, avoiding the loss of multicast data, and ensuring the quality of multicast transmission. Wherein, the content carried in the static multicast forwarding entry includes but not limited to multicast group address, multicast source address, incoming interface and outgoing interface; and the multicast group address and multicast source address can use address aggregation The technology aggregates a large number of addresses to save the number of table entry configurations.

[0048] A method for static forwarding of multicast data proposed by the present invention is applied to a multicast network including a switching device, a mu...

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Abstract

The invention discloses a method and an apparatus for static forwarding multicast data. The method includes that the exchange equipment configures the static multicast forwarding item which is used for routing information for the static memory multicast data; the exchange equipment matches the multicast data from the multicast source according to the static multicast forwarding item; if success, the exchange equipment forwards the multicast data to the receiver according to the static multicast item; if not, the exchange equipment discards the exchange equipment. In the invention, loss of multicast data is avoided, systematic resource is saved for exchange equipment on the multicast forwarding path, and complexity of the multicast configuration is lowered. A plurality of multicast source addresses and multicast group addresses are put together through using the address aggregation technique, and address number stored in the static multicast forwarding item is reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for static forwarding of multicast data. Background technique [0002] PIM (Protocol Independent Multicast, Protocol Independent Multicast) means that static routes or unicast routing tables generated by any unicast routing protocol can be used to provide routes for IP multicast. It is necessary to generate corresponding multicast routing entries through unicast routing protocols. Among them, PIM uses the RPF (Reverse Path Forwarding, reverse path forwarding) mechanism to realize the forwarding of multicast data. When multicast data arrives at the local device, first RPF check is performed on the multicast data, and if the RPF check passes, a corresponding multicast routing table entry is created to forward the multicast data; if the RPF check fails, the multicast data is discarded. Among them, PIM is divided into the following two modes according to di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/18H04L45/16
Inventor 王伟郑有勇王茹萍
Owner NEW H3C TECH CO LTD
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