H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/18 (2006.01) G11B 23/00 (2006.01) H04L 12/56 (2006.01)
Patent
CA 2298914
A technique for reducing reconvergence time by a reconverging device in a PIM- SM domain of a communication system involves sending by the reconverging device to a neighboring device a reconvergence message including a reconvergence indicator, such as a randomly selected Generation Identifier value. In response to the reconvergence message, the neighboring device sends to the reconverging device a PIM Bootstrap Message identifying the Rendezvous Point devices in the PIM-SM domain. The reconverging device creates the appropriate PIM-SM states for the Rendezvous Point devices. Additionally, the neighboring device sends to the reconverging device a PIM Join/Prune Message for each multicast group for which the neighboring device supports a downstream multicast group member. The reconverging device creates the appropriate routing entries for the multicast group memberships, and forwards each PIM Join/Prune Messages towards its corresponding Rendezvous Pointer device. Additionally, the reconverging device detects any directly connected multicast group members, and sends to the neighboring device a PIM Join/Prune Message for each multicast group for which the reconverging device supports a directly connected multicast group member.
Li Yunzhou
Ng Billy C.
Nortel Networks Corporation
Nortel Networks Limited
Smart & Biggar
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