Patent ID: 8774038
Filing Date: 2014-07-08
Classification: H04L

Abstract:
1. A method implemented by a network apparatus comprising: receiving a Multicast Listener Discovery (MLD) membership report message from a host; sending an Automatic Internet Protocol (IP) Multicast Tunneling (AMT) Relay discovery message comprising an anycast address for a border relay (BR) via an IP version four (IPv4) network; receiving an AMT Relay advertisement message comprising a unicast address for the BR via the IPv4 network; sending an AMT request message to the BR via an AMT tunnel; receiving an AMT query message comprising a MLD listener query from the BR via the AMT; sending an AMT membership message comprising the MLD membership report message of the host to the BR via the AMT tunnel; and receiving an AMT multicast data message comprising an encapsulated IP version six (IPv6) multicast message from the BR via the AMT tunnel, wherein the AMT Relay discovery message comprises a type field that indicates a type of the AMT relay discovery message, an M flag set to indicate an AMT Gateway is configured to encapsulate an MLD message in an IP version four (IPv4) packet for transmission to the BR, and a discovery nonce field that comprises a random value.