Thursday, September 10, 2009

OSPF stub behavior for Multi-VRF router

In an earlier post "Multi-VRF OSPF router becomes ABR automatically, even when it is not", the sub-command "capability vrf-lite" is added to the OSPF router process for Multi-VRF routers. This works perfectly fine when it is not supposed to be an Area Border Router (ABR).

When new OSPF stub or totally stub area is added to this router, the multi-vrf router will not inject any default route to new stub areas. As it is effectively an ABR, remove the the "capability vrf-lite" command. Do "sh ip ospf process" to verify that it is injecting default route into the stub area.

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