System and method for loop avoidance in multi-protocol label...

Details System and method for loop avoidance in multi-protocol label... System and method for loop avoidance in multi-protocol label...

2005-04-12

2005-04-12

Vu, Huy D. (Department: 2665)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S389000

Reexamination Certificate

active

06879594

ABSTRACT:
A method for avoiding loops from forming when setting up label switched paths is provided. The method uses a Label Splicing Message is followed by an Acknowledgment message to determine if loops are formed in the process of joining a new node or subtree to a multicast MPLS tree. By verifying that the path towards the root of the MPLS tree is loop-free during the construction of the tree, this method complements the loop detection mechanism provided by the label switched protocol (LDP).

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