5. Subsequent Address Family Identifier

5. Subsequent Address Family Identifier

This document defines the following values for the Subsequent Address Family Identifier field carried in the MP_REACH_NLRI and MP_UNREACH_NLRI attributes:

1 - Network Layer Reachability Information used for unicast forwarding

2 - Network Layer Reachability Information used for multicast forwarding

3 - Network Layer Reachability Information used for both unicast and multicast forwarding