Network equipment and method for realizing sparse mode protocol unrelated group broadcasting field hierarchy

A protocol-independent multicast and sparse mode technology, applied in the field of multicast routing, can solve the problems of heavy BSR burden and large BootStrap messages, and achieve good compatibility.

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

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Problems solved by technology

[0006] What the present invention aims to solve is that when the number of multicast groups in the PIM-SM protocol domain is large or the number of candidate RPs is large, the problems of executing BSR are too heavy and BootStrap messages are too large

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  • Network equipment and method for realizing sparse mode protocol unrelated group broadcasting field hierarchy
  • Network equipment and method for realizing sparse mode protocol unrelated group broadcasting field hierarchy
  • Network equipment and method for realizing sparse mode protocol unrelated group broadcasting field hierarchy

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Embodiment Construction

[0037] BSR and BootStrap messages are used to generate RPs for multicast groups in the PIM-SM domain. In the prior art, the load of the BSR and the size of the BootStrap messages are mainly determined by the number of multicast groups and the number of candidate RPs in the entire PIM-SM domain. . Reducing the number of candidate RPs can be achieved by making one candidate RP serve multiple multicast groups, but this method may cause one RP to serve multiple multicast groups, increasing the load on the RP. If one candidate RP can act as a proxy for multiple candidate RPs to perform RP election, and at the same time, when the candidate RP becomes the RP of multiple multicast groups, the proxied multiple candidate RPs still undertake the work of these multicast group RPs respectively, can solve this problem well.

[0038] The scheme adopted in the present invention divides a PIM-SM domain into a global domain and one or more local domains, and the global domain and local domains...

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Abstract

A method for delaminating PIM-SM domain includes using edge node as candidate RP of multicast set served by local domain in global domain and using it as candidate RP of multicast set served by global domain in local domain, repositioning access of said RP in global domain to RP of said multicast set in local domain on edge node when edge node in global domain becomes RP of multicast set served by local domain and repositioning access of said RP in local domain to RP of said multicast set in global domain on edge node when edge node in local domain becomes RP of multicast set served by global domain.

Description

technical field [0001] The invention relates to a multicast routing technology, in particular to a layered method of a PIM-SM (Protocol Independent Mulitcast Sparse Mode, Sparse Mode Protocol Independent Multicast) domain and a network device applied thereto. Background technique [0002] The PIM-SM protocol is currently the most mature and widely used multicast routing protocol. The PIM-SM protocol domain is usually bordered by PMBR (PIM Multicast Border Router, protocol-independent multicast border router). The domain includes some interconnected routing devices running the PIM-SM protocol. The PIM-SM protocol domain is connected to the Internet through the PMBR ( the Internet). [0003] Each multicast group in the PIM-SM domain has its RP (Rendezvous Point, rendezvous point), and other routers running the PIM-SM protocol send join messages to the RP to establish the shared tree (Shared Tree) of the multicast group . In order to let other routers in the PIM-SM domain kn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/753
Inventor 周迪
Owner NEW H3C TECH CO LTD
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