Understanding OSPF STUBS and TOTALLY STUB

Stub Areas • External LSAs are stopped ( E1 and E2 routes) • Default route is advertised into stub area by the ABR • All routers in stub area must be configured as stub Totally Stubby Areas • External LSAs are stopped ( E1 and E2) • Summary LSAs are stopped ( OIA routes ) • Routing table is reduced to a minimum • All routers in stub area must be configured as stub • ABR of stub area must be configured as totally stubby • This is a Cisco proprietary feature Networkonlineacademy.com