Scaling enhancement for PIM control messages in multicast VPNs

Details Scaling enhancement for PIM control messages in multicast VPNs Scaling enhancement for PIM control messages in multicast VPNs

2006-01-03

2010-06-29

Patel, Jayanti K (Department: 2465)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S312000, C370S432000, C709S238000, C709S242000

Reexamination Certificate

active

07746858

ABSTRACT:
A mechanism by which PIM network traffic can be aggregated is provided, thereby reducing the number of PIM messages transmitted by routers in a multicast network. PIM messages are adapted to permit information targeted at multiple destination routers to be included in one PIM message. Join/prune lists for a plurality of upstream neighbor routers can thereby be included in a single PIM message. PIM Hello messages can be similarly aggregated in a single PIM message and both PIM join/prunes and PIM Hellos can be aggregated in a single aggregated PIM message. Through such aggregation of information that would traditionally be transmitted in multiple PIM messages, network bandwidth consumption and router load due to transmission of PIM messages can be reduced.

REFERENCES:
patent: 2005/0180448 (2005-08-01), Kobayashi
patent: 2008/0114887 (2008-05-01), Bryers et al.
Fenner et al., “Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification (Revised),” IEFT Internet Draft (draft-ietf-pim-sm-v2-new-08.ps), Oct. 1, 2003, pp. 1-104.

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