METHOD TO TRANSPORT BIDIR PIM OVER A MULTIPROTOCOL LABEL SWITCHED NETWORK
First Claim
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1. A method comprising:
- receiving a multicast packet at a network element of a plurality of network elements in a network;
performing a route lookup at each of a plurality of edge router elements of the network;
selecting, based on the lookup, one of the plurality of edge router elements as a root of a Label Switched Path (LSP) of a Multicast Distribution Tree (MDT) rooted at a rendezvous point (RP); and
forwarding the packet along the MDT towards the RP via the root edge router element.
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Abstract
A method, system and an apparatus to transport bidir PIM over a multiprotocol label switched network are provided. The method may comprise receiving a multicast packet at a network element, the multicast packet including an upstream label. The method may further comprise identifying, from the upstream label, a Multicast Distribution Tree (MDT) rooted at a rendezvous point. The packet may be forwarded along the MDT towards the RP based on the upstream label. The MDT may be identified from a downstream label and the packet may be forwarded along the MDT away from the RP based on the downstream label.
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Citations
20 Claims
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1. A method comprising:
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receiving a multicast packet at a network element of a plurality of network elements in a network; performing a route lookup at each of a plurality of edge router elements of the network; selecting, based on the lookup, one of the plurality of edge router elements as a root of a Label Switched Path (LSP) of a Multicast Distribution Tree (MDT) rooted at a rendezvous point (RP); and forwarding the packet along the MDT towards the RP via the root edge router element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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memory to store instructions; and a processor configured to execute the instructions to; receive a multicast packet at a network element of a plurality of network elements in a network; perform a route lookup at each of a plurality of edge router elements of the network; select, based on the lookup, one of the plurality of edge router elements as a root of a Label Switched Path (LSP) of a Multicast Distribution Tree (MDT) rooted at a rendezvous point (RP); and forward the packet along the MDT towards the RP via the root edge router element. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus comprising:
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means for receiving a multicast packet at a network element of a plurality of network elements in a network; means for performing a route lookup at each of a plurality of edge router elements of the network; means for selecting, based on the lookup, one of the plurality of edge router elements as a root of a Label Switched Path (LSP) of a Multicast Distribution Tree (MDT) rooted at a rendezvous point (RP); and means for forwarding the packet along the MDT towards the RP via the root edge router element. - View Dependent Claims (20)
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Specification