Fast multicast convergence at secondary designated router or...

Details Fast multicast convergence at secondary designated router or... Fast multicast convergence at secondary designated router or...

2007-12-24

2010-12-28

Shah, Chirag G (Department: 2477)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S432000

Reexamination Certificate

active

07860093

ABSTRACT:
In one embodiment, a method includes receiving at a network device designated as a secondary designated router or forwarder, an indication that a receiver wants to join a multicast group, transmitting a multicast join message in response to the received indication, and receiving multicast data from a source at the network device. If a primary designated router or forwarder is operating to forward the multicast data from the source to the receiver, the received multicast data is dropped. If a failure occurs at the primary designated router or forwarder, the received multicast data is forwarded to the receiver. An apparatus for fast multicast convergence at a secondary designated router or forwarder is also disclosed.

REFERENCES:
patent: 6707796 (2004-03-01), Li
patent: 2002/0114302 (2002-08-01), McDonald et al.
patent: 2002/0186652 (2002-12-01), Popovich
patent: 2003/0088696 (2003-05-01), McCanne
patent: 2003/0193958 (2003-10-01), Narayanan
patent: 2006/0050643 (2006-03-01), Yoshimoto et al.
patent: 2007/0147374 (2007-06-01), Lee et al.
patent: 2007/0239879 (2007-10-01), Serbest et al.
patent: 2008/0205395 (2008-08-01), Boddapati et al.
Fenner et al., “Protocol Independent Multicast—Sparse Mode (PIM-SM): Protocol Specification (Revised)”, IETF RFC 4601, Aug. 2006.
Handley et al., Bi-directional Protocol Independent Multicast (BIDIR-PIM), IETF draft-ietf-pim-bidir-09.txt, Feb. 2007.

Affiliated with

Also associated with

Rating

Fast multicast convergence at secondary designated router or... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fast multicast convergence at secondary designated router or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast multicast convergence at secondary designated router or... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4150076