From: Danny.Andaluz@triaton-na.com
Date: Wed Nov 19 2003 - 14:10:25 GMT-3
About 20 routers. It's a small portion of the network. We needed to run
OSPF because we a firewall in the middle of everything and wanted to keep
routing dynamic.
Take a look at this:
http://home.comcast.net/~practice.lab.examples/ospf_issue.jpg
I need RA to get to R5 and R6 via R1. I've made some changes to EIGRP to
get the this to happen. For example, if R5 loses it's link to R3, R3 should
stop advertising to F1 that it know how to get to R5. Once this happens, R1
should lose this route and stop advertising it via EIGRP to RA. RA should
then go to R2 to get to R5.
What's happening is that when the link between R5 and R3 goes down it still
gets the route from R6 which is getting it from R4, which is getting it from
R5's second link.
Connectivity still works, but now what we have is one site's traffic
traversing another site's links and router.
I really can't do what you suggested because all routers need to have all
the routes.
What I'm thinking of doing is running EIGRP between R3 and R4 on the serials
and on R5 and R6 and redistribute on R3 and R4 into OSPF. This way I can
have R5 and R6 only advertise their directly connected networks.
Danny
-----Original Message-----
From: Carter, Lee [mailto:Lee.Carter@CommerceBank.com]
Sent: Wednesday, November 19, 2003 11:10 AM
To: Andaluz, Danilo, Triaton/NA
Subject: RE: Filtering specific LSA's in OSPF
How big of an OSPF domain are we talking about? You could run OSPF in two
different processes on the router then redistribute them blocking the routes
you don't want to be propagated throughout the network. But if you have a
fairly large OSPF domain and your routers are already taxed this may not be
a good fix.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Danny.Andaluz@triaton-na.com
Sent: Wednesday, November 19, 2003 9:43 AM
To: ccielab@groupstudy.com
Subject: Filtering specific LSA's in OSPF
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?
Thanks,
Danny
Danny Andaluz
Network Engineer
Triaton, North America
908-541-6522
This archive was generated by hypermail 2.1.4 : Fri Dec 12 2003 - 12:29:14 GMT-3
