Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

OSPF type 5 filtering

hi folks,

is there any way to filter OSPF type 5 LSA?

please help.

thanks

3 REPLIES
Bronze

Re: OSPF type 5 filtering

Hi,

Can u be more specific as to what u're trying to achieve?

Configuring an area as a stub will stop Type 4 & 5 LSA from being flooded into that area.

Maybe u could be more specific about your intention?

New Member

Re: OSPF type 5 filtering

I have a network as below:

R1---R2---R3---R4

Link from R2 to R3 is in Backbone area. Link from R1 to R2 is in normal area, say area 2. Link from R3 to R4 is in normal area, area 2.

R1 has a static route to number of networks and redistribute them to R2. We dont want the redistributed routes to be advertised across the link R2-R3. We dont manage R3 and R4.

is there any way to filter Type 5 LSA from entering backbone area.

thanks

Bronze

Re: OSPF type 5 filtering

I dont think there's a feature in ospf that allows filtering of Type 5 LSA, though there's a feature that allows filtering of Type 3 LSA btw areas.

Usually, to avoid an area from receiving Type 5 LSAs in a certain area, that area would usually be configured as a stub area. As u might already know, type 5 LSAs are flooded throughout the entire OSPF domain, except stubs, TSAs, Totally-NSSAs.

I might be wrong, but i haven't yet found a way to filter type 5 LSAs without configuring an area to be a stub.

128
Views
0
Helpful
3
Replies
CreatePlease login to create content