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New Member

OSPF Type 5 LSA Filtering

Can I filter OSPF Type 5 LSA ?

Note: OSPF ABR Type 3 LSA Filtering:

  • Other Network Infrastructure Subjects
Cisco Employee

Re: OSPF Type 5 LSA Filtering

Once the type 5 LSA is originated by the ASBR there is no way to selectively filter a specific one. You can prevent all type 5 from entering a specific area by configuring it as a stubby area but that is about it.


Re: OSPF Type 5 LSA Filtering

This is CSCdw49150, which you can't see unless you're inside Cisco.



Cisco Employee

Re: OSPF Type 5 LSA Filtering

This is not available yet though. It is still in a "coming soon to a theather near you" state ;o)

New Member

Re: OSPF Type 5 LSA Filtering

Good points by the authors so far. I would add that if you are looking to filter type 3 LSAs, these are summaries from an ABR and a stub area needs to be totally stubby to block summaries. The breakdown is simple ->

AREA type LSAs allowed LSAs denied

backbone 1,2,3,5 none

normal 1,2,3,5 none

stub 1,2,3 5

totally stub 1,2 3,5

NSSA 1,2,3,4,7 5

granted there are other LSA types, but this brief table covers what I hope you are looking for. Good luck!


NSSA totally stubby