Multipath Support for IGMP/MLD Proxy

This document specifies the framework to support multipath reception in Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD) proxy devices. The proposed mechanism allows IGMP/ MLD proxy devices to receive multicast sessions/channels through different upstream interfaces. It defines static configuration methods for associating upstream interfaces with channel identifiers and interface priority values. A mechanism for upstream interface takeover that enables switching from an inactive to active upstream interface is also described.