Advertising Bit Index Explicit Replication (BIER) Capability Using OSPF
Huawei
Bit Index Explicit Replication (BIER) is a new multicast forwarding paradigm which doesn't require an explicit tree-building protocol and doesn't require intermediate routers to maintain any multicast state. A BFR cannot send a BIER packet to a given nexthop router unless that nexthop router has indicated that it can support the BIER forwarding procedure. This document defines a mechanism to signal that capability using OSPF. This mechanism is useful when the unicast route distribution is also done via OSPF.