Juniper Networks, Inc.
RELIABLE MULTICAST USING A REDUNDANT UNICAST OVERLAY NETWORK

Abstract:

Techniques are described for redundantly forwarding encapsulated multicast traffic of a multicast distribution tree, using reliable overlay connections established between adjacent nodes of the multicast distribution tree. An example router of this disclosure is configured to receive first multicast packets of a multicast flow via a multicast distribution tree, to receive second multicast packets of the multicast flow via a transmission control protocol (TCP) connection of a connection-oriented distribution tree implemented in parallel to the multicast distribution tree, and in response to determining that the LHR has received a multicast packet of the first multicast packets via the multicast distribution tree out of order to create a gap of one or more of the first multicast packets for the multicast flow, forward, to at least one interested receiver positioned downstream of the router, the second multicast packets.