Route map applications

• Route maps can be applied to interfaces, BGP neighbors, other stuff.

• Each route map has a name and one or more “match/set” conditionals (“if”, “then”). Each conditional has a sequence number, they're evaluated in order; First match wins and causes subsequent rules to be ignored (a bit like access-lists).

• Lots of different things to match (AS-paths, prefixes, communities), lots of things to set (communities, prepending, metrics, next-hop address, local preferences...)