From: Bob Sinclair (bob@bobsinclair.net)
Date: Fri Jan 05 2007 - 19:36:59 ART
Sarah,
Here is an idea: how about running two ospf processes on the hub, one per
spoke, then redistribute between them. Wouldn't the spokes then see
matching ASBR/BGP rids?
Bob Sinclair
CCIE 10427 CCSI 30427
www.netmasterclass.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sarah Kent
Sent: Friday, January 05, 2007 4:45 PM
To: Daniel_Steyn@Dell.com; ccielab@groupstudy.com
Subject: Re: OSPF, iBGP with synchronization enabled and a Route-Reflector
Daniel,
I do see a rib failure on the hub. The hub router, which is also the
route-reflector, sees the prefix and can synchronize it, because it sees the
same route-id from the spoke for both bgp and ospf. However, the
route-reflector injects its route-id when it forwards the bgp prefix to the
other spoke. The other spoke will not consider the prefix as synchronized,
because it the route-ids don't match for ospf and bgp.
Is there any way to
manipulate bgp route-ids per interface or neighbor relationship?
Thanks,
Sarah
----- Original Message ----
From: "Daniel_Steyn@Dell.com"
<Daniel_Steyn@Dell.com>
To: icmptype3@yahoo.com; ccielab@groupstudy.com
Sent:
Friday, January 5, 2007 4:34:57 PM
Subject: RE: OSPF, iBGP with
synchronization enabled and a Route-Reflector
You should be able to configure
everything and see the BGP routes given
these requirements, however, you may
experience a rib failure as the
OSPF administrative distance is going to be
lower than the iBGP admin
distance - so you may not actually see the routes
populate to the
routing table.
As always, I may be wrong - but that is just
my initial guess.
-----Original Message-----
From: nobody@groupstudy.com
[mailto:nobody@groupstudy.com] On Behalf Of
Sarah Kent
Sent: Friday, January
05, 2007 2:29 PM
To: ccielab@groupstudy.com
Subject: OSPF, iBGP with
synchronization enabled and a Route-Reflector
Hi GS,
Is it possible to setup
a network with the following requirements?
3
routers in a hub and spoke
topology.
Routers are running OSPF, and are iBGP
peers with synchronization
enabled.
The hub is a Route-Reflector.
Prefixes are
advertised from one spoke
to the other.
All prefixes should be synchronized.
I know that this would work
with confederations instead of
route-reflectors.
I haven't figured out a way
to get the prefixes synchronized on the
spokes using a route-reflector. Any
ideas?
Thanks,
Sarah
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