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Control method base on group index for forwarding multicast straddle

A control method and multicast technology, which is applied in the branch office to provide special service devices, digital transmission systems, data exchange networks, etc., can solve the problem of low forwarding efficiency and achieve the effect of improving speed and efficiency

Inactive Publication Date: 2009-02-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, two multicast routing lookups are required when forwarding across boards, and the forwarding efficiency is not high

Method used

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  • Control method base on group index for forwarding multicast straddle
  • Control method base on group index for forwarding multicast straddle
  • Control method base on group index for forwarding multicast straddle

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Embodiment Construction

[0035] The group index-based multicast cross-board forwarding control method of the present invention will be described below with reference to the embodiments of the accompanying drawings.

[0036] A control method for multicast cross-board forwarding based on a group index of the present invention includes the steps of establishing a multicast route based on a group index as follows:

[0037] The multicast module establishes a multicast route between the multicast source and the orderer, and the main control board assigns a unique group index to each multicast routing entry;

[0038] Together with the multicast routing table entries, the group index is broadcast to all boards;

[0039] After each board receives the multicast routing table entry, it creates its own multicast routing table entry. It is guaranteed to be directly accessed by index, so that the same multicast routing table entry has the same index on the board.

[0040] After the multicast routing table entry i...

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Abstract

The invention discloses a method for controlling multicasting cross-board forwarding based on the group index. The method comprises the following steps: establishing a multicasting route between a multicasting source and a programme orderer by a multicasting module; distributing a unique group index to each multicasting routing table item by a master control board; transmitting the group indexes along with the multicasting routing table items to all the board cards in a broadcasting manner; establishing each multicasting routing table item by each the board card after receiving the multicasting routing tables; receiving and forwarding the multicasting message by a multicasting router, and adding and deleting the multicasting routing table items. By adopting the method, only one multicasting route search is needed to complete the multicasting cross-board forwarding, therefore, the speed and the efficiency of the multicasting cross-board forwarding are improved. The method is applicable in the computer network communication field.

Description

technical field [0001] The invention relates to the field of computer network communication, in particular to a group index-based multicast cross-board forwarding control method. Background technique [0002] In the prior art, with the rapid development of the Internet, the IP network has gradually become an indispensable tool in people's daily work and life, and many services consume a large amount of network bandwidth. IP multicast technology realizes efficient data transmission from point to multipoint in IP network. IP multicast technology can save bandwidth resources and reduce network load, so it is widely used in various fields such as video conferencing, online games and IPTV. [0003] At present, most routers and switches on the backbone network are frame-type structures. A frame is inserted into a board to form a complete router or switch, and the boards are connected through a backplane. When multicast data packets are forwarded across boards, the delay is longe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/18H04L45/16
Inventor 汤海华
Owner ZTE CORP