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Method of reducing synchronous information content when synchronizing multicast routing information

A technology of information volume and routing, applied in the field of data communication, can solve the problems of long synchronization time, increase the computing cost of data communication equipment, and affect the efficiency of multicast data forwarding, and achieve the effect of improving work efficiency and reducing the amount of synchronization information.

Inactive Publication Date: 2008-04-09
ZTE CORP
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Problems solved by technology

[0013] It can be seen from the above steps that this method synchronizes multicast routing information according to the method of synchronizing unicast routing information. Since the size of multicast routing entries is not equal and increases with the increase of multicast interfaces, there are It may be hundreds of times of a unicast routing entry; according to the above method of multicast routing information, as long as the multicast routing Long synchronization time affects the forwarding efficiency of multicast data

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  • Method of reducing synchronous information content when synchronizing multicast routing information
  • Method of reducing synchronous information content when synchronizing multicast routing information
  • Method of reducing synchronous information content when synchronizing multicast routing information

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[0029] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Because a multicast routing entry may have multiple outgoing interfaces, its size is much larger than that of a unicast route. Therefore, when synchronizing multicast routing, it often requires much higher overhead than unicast routing. However, the change part of the multicast routing entry obtained after the recalculation of a multicast routing entry is triggered by external conditions is relatively fixed, and the occupied space is not large; the present invention uses group The changed part of the multicast routing entry replaces the original entire multicast routing entry to reduce the amount of notification information when the multicast routing synchronization information is obtained.

[0031] In the present invention, when the multicast routing protocol module calculates the multicast routing entry, it ...

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Abstract

The invention relates to a method for reducing synchronization information quantity when synchronously multicasting routing information. The method only generates the variation part of multicast routing item when re-calculating multicast routing item, synchronizes the variation part to a routing list management module, after receiving, the routing list management module updates local information and generates the variation part of multicast retransmission item and synchronizes to a retransmission module, which updates local multicast retransmission item according to the variation part of multicast retransmission item. The invention changes the synchronization information quantity of the multicast routing information from the original sum of the multicast routing item and the multicast retransmission item to the sum of the variation part of the multicast routing item and the variation part of the multicast retransmission item, so as to effectively reduce synchronization information quantity when synchronously multicasting the routing information, and improve the work efficiency of communication equipment.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method for reducing the amount of synchronous information when synchronizing multicast routing information. Background technique [0002] As shown in Figure 1, the multicast function of data communication equipment is logically divided into two planes, namely, the control plane and the forwarding plane. These two planes are located on different network devices. The network devices can be in a centralized environment or can is in a distributed environment. [0003] Functionally, the control plane is divided into two parts: the multicast routing protocol module and the routing table management module. The multicast routing protocol module generates a multicast routing table according to changes in external conditions and notifies the routing table management part. After receiving the notification from the multicast routing protocol module, the routing table management module ge...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/16H04L29/06H04L45/16
Inventor 许炜华
Owner ZTE CORP
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