Providing PIM-SM support for mRSVP-TE based multicast virtual private networks

摘要

In a source provider edge (PE) router, a method for supporting protocol independent multicast sparse-mode (PIM-SM) using multicast resource reservation protocol-traffic engineering (mRSVP-TE) comprising the steps of creating a protocol independent multicast (PIM) state, sending a first unicast data message to a rendezvous point (RP) PE router using the PIM state, wherein the first unicast data message is a PIM register message encapsulated as a unicast multiprotocol label switching (MPLS) packet, receiving a PIM join message from the RP PE router, wherein the PIM join message triggers creating a second PIM state, sending a second unicast data message to the RP PE router via a default multicast distribution tree (MDT) using the second PIM state, receiving a PIM register-stop message from the RP PE router, wherein the PIM register-stop message suspends sending the second unicast data message.

主权项

1. A method for supporting protocol independent multicast sparse mode (PIM-SM) using multicast resource reservation protocol-traffic engineering (mRSVP-TE) in a source provider edge (PE) router, comprising the steps of:
creating a protocol independent multicast (PIM) state, wherein the PIM state is an (S, G) state, wherein S represents one of a source and a source address and G represents one of a group and a sparse mode destination address; sending a first unicast data message to a rendezvous point (RP) PE router using the PIM state, wherein the first unicast data message is a PIM register message encapsulated as a unicast multiprotocol label switching (MPLS) packet; receiving a PIM join message from the RP PE router, wherein the PIM join message triggers creating a second PIM state, wherein the second PIM state is an (S, G) state; sending a second unicast data message to the RP PE router via a default multicast distribution tree (MDT) using the second PIM state, wherein the second unicast data message is different from the first unicast data message; receiving a PIM register-stop message from the RP PE router, wherein the PIM register-stop message suspends sending the second unicast data message; and sending multicast data traffic via the default MDT.