CCNP Routing and Switching ROUTE 300-101 Official Cert Guide

Setting the External Route Type

When redistributing into OSPF, Cisco IOS automatically sets the external route type to external Type 2 (E2). However, the type can be configured as E1 or E2 by using the set metric-type {type-1 | type-2} route map subcommand. When a redistribute OSPF subcommand references such a route map, the routes matched by the route map clause with the set metric-type command will be designated as that external type in the Type 5 LSA created for that subnet.

Note that the redistribute command also allows the match {internal | external 1 | external 2 | nssa-external} parameters, but these parameters do not set the type of route. Instead, these parameters match existing routes as part of the process of deciding which routes ...