ASBR Router

To specify a router as ASBR, use the command ASBR Router in OSPF Router Configuration Mode. The no form of this command disables the router as ASBR. A router that act as gateway (redistribution link) between OSPF and other routing protocols ( IGRP, EIGRP, RIP, BGP, Static) or other instances of the OSPF routing process is called autonomous system boundary router ( ASBR).