From: Claude-Vincent (claude_vincent@xxxxxxxxx)
Date: Wed Jan 24 2001 - 01:58:12 GMT-3
All,
I could make it work by filtring the summary address on the router directly
attached to R4, located in the OSPF domain. I issued the distribute-list #
in command. Any filters on R4 failed as the NULL routes added disapeared
from the routing table!
Any other ideas less bandwidth-consumming?
Vincent
----- Original Message -----
From: "Nigel Taylor" <nigel_taylor@hotmail.com>
To: "Connary, Julie Ann" <jconnary@cisco.com>; <ccielab@groupstudy.com>
Sent: Wednesday, January 24, 2001 9:14 AM
Subject: Re: summary-address in ospf and redistribution
> Julie Ann,
> I was working a lab like this over the past weekend and
let
> me say I've still not solved how to get the OSPF domain routed into the
IGRP
> domain. In my case the interface to the IGRP domain was given as
> 171.68.62.93/26 and all the OSPF connected interfaces were assigned
address
> on the 172.17.59.x subnet making use of address with /28 /29 /30 subnets.
> The lab specified only the use of the 172.17.59.x. I tried the
> summary-address and got nothing to work...
>
> I'm still looking for answers.....
>
> Nigel..
>
> ----- Original Message -----
> From: Connary, Julie Ann <jconnary@cisco.com>
> To: <ccielab@groupstudy.com>
> Sent: Tuesday, January 23, 2001 9:37 AM
> Subject: summary-address in ospf and redistribution
>
>
> > Hi All,
> >
> > I ran across a practice lab and another fat-kid lab that use the ospf
> > summary-address to overcome
> > vlsm to fsm issues when redistributing ospf into igrp:
> >
> >
> >
> > situation: The ospf connected interface has a longer mask than the IGRP
> > connected interface.
> > area-range does not work because it is on the same router.
> >
> > The Fatkid lab - expert redistribution - solves this with a
> summary-address.
> >
> > Question - does this not inject E2 routes back into your OSPF domain?
> >
> >
> > OSPF area 2
> > 170.10.128.4 - 255.255.255.192
> > |
> > |
> > |
> > R4 -----------IGRP - 170.10.2.4 255.255.255.0
> >
> > To redistribute the ospf interface into IGRP a summary-address is
> > used: summary-address 170.10.128.0 255.255.255.0
> >
> > But then in the ospf domain you get an E2 route to 170.10.128.0 in your
> > ospf domain.
> >
> > So how do you prevent this E2 route into OSPF - can you filter it?
> >
> > Thoughts?
> >
> > remember - no static, no default.
> >
> > Julie Ann
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> > Julie Ann Connary
> > | | Network Consulting Engineer
> > ||| ||| Federal Support Program
> > .|||||. .|||||. 13635 Dulles Technology
Drive,
> > Herndon VA 20171
> > .:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
> > c i s c o S y s t e m s Email: jconnary@cisco.com
> >
> > ------------------------------------------------------------------------
> >
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