Friday, July 23, 2010

BSCI - OSPF - Area Types - Stub Area

Stub Area - Does not accept Type5 LSA's (External routes)

  • Type5 LSA's replaced by a default route from the ABR
  • All routers within the Stub area must be configured as a Stub Router
Configure a Stub Router:
R1(config)# router ospf 1
R1(config-router)#area 2 stub
  *Note the adjacency will fail until the neighbor plus the ABR is configured as a Stub as well

NOTE - On the ABR #sh ip route - will not change
On the Stub router, #sh ip route - routes from the ABR are replaced by a default route.

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