From: Martin D. Fierbaugh (marty@networkwv.com)
Date: Wed Nov 19 2003 - 19:25:44 GMT-3
One possible way to solve it may be not to include the network statement in
ospf, use a neighbor statement across the link, then redistribute connected
and filter with a route map.
Marty
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Danny.Andaluz@triaton-na.com
Sent: Wednesday, November 19, 2003 5:20 PM
To: hcb@gettcomm.com; ccielab@groupstudy.com
Subject: RE: Filtering specific LSA's in OSPF
I'm trying to hide the existence of a specific subnet via a specific source.
I still need R1 to have the route, just not if the link between R5 and R3 is
down. All my research tells me the same things you have just said. I'll
have to figure out some other way to do this. Thanks, Howard.
Danny
-----Original Message-----
From: Howard C. Berkowitz [mailto:hcb@gettcomm.com]
Sent: Wednesday, November 19, 2003 4:24 PM
To: ccielab@groupstudy.com
Subject: Re: Filtering specific LSA's in OSPF
At 10:43 AM -0500 11/19/03, Danny.Andaluz@triaton-na.com wrote:
>Hey, Group. Does anyone know of a way to filter specific LSA from
>leaving or coming into a router. I'm having an issue in our production
>network. I know you can do the "database-filter-all out" and the
>"neighbor database-filter", but it blocks everything. I'm looking for
>something similar to what EIGRP can do with dist-lists. I can do a
>distribute-list in and keep it from being installed in the routing
>table of the router and this works fine, but the LSA still comes in and
>gets sent downstream to other neighbors. Any ideas?
>
I'd ask immediately "what issue are you having in the production network?"
If you think you are having a problem with router performance due to
too many LSAs, the proper solution may be to split up your areas or
use routers with faster processors.
If you are trying to hide the existence of a specific subnet, OSPF
simply isn't designed to do that. When I have to do that sort of
thing, or to specify a special traffic-engineered preferred paths, I
normally use static routes in addition to OSPF. Such static routes
are never redistributed into OSPF, being filtered out during
redistribution if other static routes do need to be given to OSPF.
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