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Method for raising group broadcasting requested broadcasting success rate and protocol extraneous group broadcasting routing device

A router and success rate technology, applied in two-way working systems, digital transmission systems, electrical components, etc., can solve the problems of on-demand multicast streams and few multicast forwarding entries, and achieve the effect of improving the success rate and reducing the burden.

Active Publication Date: 2007-01-03
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the number of multicast forwarding table items supported by routers is generally relatively small. If the storage resources of the router's table items are exhausted, the client cannot continue to order multicast streams from other multicast sources through the router.

Method used

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  • Method for raising group broadcasting requested broadcasting success rate and protocol extraneous group broadcasting routing device
  • Method for raising group broadcasting requested broadcasting success rate and protocol extraneous group broadcasting routing device
  • Method for raising group broadcasting requested broadcasting success rate and protocol extraneous group broadcasting routing device

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Embodiment Construction

[0059] The root cause of the many multicast forwarding entries stored in the router: (S, G) entries and (*, G) entries is that the current PIM protocol prevents clients from frequently joining / leaving the same multicast group. The frequent creation of multicast forwarding entries requires that the router need to wait for a specified aging period before deleting the multicast forwarding entry after the outbound interfaces corresponding to the multicast forwarding entry are empty. However, with the development of multicast networks, the number of multicast sources is increasing, and the probability that clients frequently join / leave the same multicast group is low. Therefore, the core idea of ​​the present invention is: the router receives the PIM pruning message , and after deleting the outbound interface corresponding to the multicast forwarding table item indicated by the PIM pruning message, if it is detected that the outbound interfaces corresponding to the multicast forward...

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Abstract

A method for raising success rate of multicast request program includes deleting connection of itself to downstream router and to exit interface being corresponded by multicast retransmission table item and being indicated by message when PIM clipped message sent from downstream router is received by router, deleting multicast retransmission table item stored by itself within aging time if condition satisfying to quicken aging is detected out. The PIM router for raising success rate of multicast request program is also disclosed.

Description

technical field [0001] The invention relates to the technical field of multicast services, in particular to a method for improving the success rate of multicast on-demand and a protocol-independent multicast router. Background technique [0002] In order to ensure social security, each city has set up monitoring systems at key points such as various institutions and traffic arteries, and uses mass storage systems to store recorded video data. At present, for a city, the typical monitoring system configuration is: the municipal bureau has 20 sub-bureaus, each sub-bureau has 25 police stations, and each police station has 1,000 (K) cameras. Each camera is a multicast source and has a multicast group address. The city bureau, each sub-bureau, and each police station can view the images monitored by any camera. It can be seen that the number of multicast groups carried by the entire monitoring system is: 500K, which is very large. [0003] Currently the most mature multicast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04N7/173H04L29/06
Inventor 张利岗苏佳王杨周迪
Owner NEW H3C TECH CO LTD