From: David FAHED (dfahed@xxxxxxxxxxxx)
Date: Sun Jan 21 2001 - 15:20:42 GMT-3
I agree with you Tracy. It is same thing I wrote in my e-mail. You can use
summary-address to summarize route learned from IRGP in OSPF.
Tracy Blackmore wrote:
> I have used the summary-address command on an ASBR to summarize routes
> learned from another routing protocol. Here's what I pulled from the IOS
> 12.0 documentation...
>
> Usage Guidelines
> Multiple groups of addresses can be summarized for a given level. Routes
> learned from other routing protocols can also be summarized. The metric used
> to advertise the summary is the smallest metric of all the more specific
> routes. This command helps reduce the size of the routing table.
>
> Tracy W. Blackmore
> T.S. Lad Consulting
> 1026 E Stanford Ave.
> Gilbert, AZ., 85234
> (480)558-0472
>
> -----Original Message-----
> From: David FAHED [mailto:dfahed@outremer.com]
> Sent: Sunday, January 21, 2001 10:55 AM
> To: Mike McSpedon
> Cc: fwells12; ccielab@groupstudy.com
> Subject: Re: IGRP/OSPF redistribution question.
>
> Hi,
>
> Fisrt if you read my last e-mail you will see I use the area range not on
> the
> ASBR but on a internal ospf router. Second I think that you don't understand
> how
> to use the summary-address. The summary-address can't be used on IGRP
> process, so
> you propose to use on the ospf process. The problem is if you use it on the
> ospf
> process, it will be useful to summarize IGRP route on the OSPF process. In
> this
> case we want to do the contrary (OSPF->IGRP).
>
> Mike McSpedon wrote:
>
> > Regarding the first approach - I'd be careful to do that only if the
> routes
> > in the OSPF domain aren't summarizable into a /24 (e.g., OSPF has a /20
> > that needs to be reachable from the IGRP domain). Regarding the second
> > approach, since Paige is an ASBR, you'll need to use the "summary-address"
> > not the "area-range" command to summarize the /26 and /28 into /24s for
> IGRP.
> >
> > HTH,
> > -Mike
> >
> > At 08:05 AM 1/21/01 -0400, David FAHED wrote:
> > >There is two way to do that :
> > >1) Create a loopback on Paige for example 10.0.0.1 - Use the default
> > >network 10.0.0.0 to announce a default route into igrp process
> > >2) All the network with a mask differente to /24 use in the ospf domain
> > >have to be announce with /24. You can use an area range with the two
> > >route in gibson - for the route 172.20.113.192/26 area x range
> > >172.20.113.0 255.255.255.0 -for the route 172.20.114.48/28 area x range
> > >172.20.113.0 255.255.255.0 - After doing that you will have only /24
> > >network on paige and you can redistribute into IGRP without problem
> > >
> > >Hope this help!
> > >
> > >
> > >fwells12 wrote:
> > >
> > > > In Jeff Doyle's example of OSPF/IGRP redistribution on page 710, is =
> > > > there any way of letting the IGRP domain be able to ping the VLSM =
> > > > networks?
> > > >
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