From: scott mann (smann0762@xxxxxxxxxxx)
Date: Sun Oct 28 2001 - 15:11:14 GMT-3
Cisco provides only one solution from it's CCO. Static route redistribution.
It works fine on 12.1. You cannot use summary-address or area range to fix
this issue. I tried everything while doing FatKids lab #501/2 and nothing
works except static. I doubt the lab will give you a problem that has no
viable solution, so just understand how things work and you'll be fine.
The link;
http://www.cisco.com/warp/public/105/52.html
Scott
>From: "kenairs" <kenairs@hotmail.com>
>Reply-To: "kenairs" <kenairs@hotmail.com>
>To: "kym blair" <kymblair@hotmail.com>, <gkats@algosystems.gr>,
><s_ravichandran@hotmail.com>, <w.schoots@chello.nl>,
><ccielab@groupstudy.com>
>Subject: Re: SOLUTION: OSPF Summary-Address (for redistrib into IGRP)
>Date: Sun, 28 Oct 2001 23:25:26 +0800
>
>HI Ravi ,
>I tried that and it works fine for version 12.0 . But coming this nov , the
>routers in the lab will be loaded version 12.1 ( am i right ? ) .I try
>redistribute connected in version 12.1 but it doesn't work. So how are we
>going to overcome this problem ? The static route to null 0 works but we
>are
>not allow :( .
>
>Regards
>ken
>
>----- Original Message -----
>From: kym blair <kymblair@hotmail.com>
>To: <gkats@algosystems.gr>; <s_ravichandran@hotmail.com>;
><w.schoots@chello.nl>; <ccielab@groupstudy.com>
>Sent: Sunday, October 28, 2001 2:37 PM
>Subject: RE: SOLUTION: OSPF Summary-Address (for redistrib into IGRP)
>
>
> > Yorgos,
> >
> > Your suggestion to create a static of the /25 connected using /24 to
>null0
> > so it matches the /24 IGRP interface to redistribute into worked great.
> > Thanks.
> >
> > Kym
> >
> >
> > >From: "Yorgos Katsikogiannis" <gkats@algosystems.gr>
> > >Reply-To: "Yorgos Katsikogiannis" <gkats@algosystems.gr>
> > >To: "'Ravi'" <s_ravichandran@hotmail.com>, "'kym blair'"
> > ><kymblair@hotmail.com>, <w.schoots@chello.nl>,
> > ><ccielab@groupstudy.com>
> > >Subject: RE: SOLUTION: OSPF Summary-Address (for redistrib into IGRP)
> > >Date: Mon, 22 Oct 2001 19:32:21 +0300
> > >
> > >Hi Ravi,
> > >
> > >there is one more thing that you possibly could do to overcome this.
> > >
> > >You could create a static route of your *connected interface* using the
> > >major network subnet of the IGRP to a null interface (i.e if your IGRP
> > >is using /24, then you will have to use ip route xx.xx.xx.xx
> > >255.255.255.0 null0 ) and then redistribute this static route into
>your
> > >IGRP routing protocol.
> > >
> > >You may check see that your routes are now advertised correct, but the
> > >bother is that you cannot use this kind of solution under lab
> > >circumstances.
> > >
> > >Yorgos
> > >
> > >
> > >-----Original Message-----
> > >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > >Ravi
> > >Sent: Monday, October 22, 2001 7:02 PM
> > >To: kym blair; w.schoots@chello.nl; ccielab@groupstudy.com
> > >Subject: Re: SOLUTION: OSPF Summary-Address (for redistrib into IGRP)
> > >
> > >
> > >Hi Kym,
> > >
> > >If the connected interface that you are talking about is not in area 0
>,
> > >you may still use area range command on the other side of the link. OR
> > >You can do redis connected and use summary address. It works up to IOS
> > >12.0.
> > >
> > >I found problem when I used the same command on IOS 12.1. It does not
> > >redistribute the connected interface if the interface is already in any
> > >of the ospf area. It works for any interface which are not in any
> > >routing process. Try by using secondary address to overcome this
> > >problem.
> > >
> > >Any one has better solution please add.
> > >
> > >Regards,
> > >Ravi
> > >
> > >
> > >----- Original Message -----
> > >From: kym blair <kymblair@hotmail.com>
> > >To: <w.schoots@chello.nl>; <ccielab@groupstudy.com>
> > >Sent: Monday, October 22, 2001 8:54 AM
> > >Subject: SOLUTION: OSPF Summary-Address (for redistrib into IGRP)
> > >
> > >
> > > > Willy's solution to use area range at the ABR before the ASBR
>worked;
> > > > both became OSPF IA /24 networks and redistributed into IGRP:
> > > >
> > > > >If you would use an area range command on R5, then it should work:
> > > > >area 0 range 152.1.1.0 255.255.255.0 area 0 range 152.1.2.0
> > > > >255.255.255.0
> > > >
> > > > Ravi's comment explains:
> > > >
> > > > Your R6 (ASBR between OSPF and IGRP) routing table shows both the
> > > > network
> > >as
> > > > IA entry. To summarize a IA route, you can use area range command on
> > > > ABRs. Summary address to summarize routes learned from another
>routing
> > >
> > > > process, and to be used on ASBRs. As your routes are IA routes,
> > > > summary address
> > >will
> > > > not work.
> > > >
> > > > Thanks for the help; also thanks to those who offered to recreate
>this
> > >
> > > > scenario on their labs.
> > > >
> > > > ***** This leads to one more question: ******
> > > >
> > > > If we had a directly connected interface on R6 (ASBR) with a /25
>mask,
> > >
> > > > how would we summarize to a /24 to get it into IGRP (static works,
>but
> > >
> > > > for
> > >this
> > > > scenario cannot be used)? It wouldn't be an OSPF IA route, so we
> > > > couldn't use area range at the previous ABR, and summary-address
> > > > doesn't work (I tried).
> > > >
> > > > Kym
> > > >
> > > >
> > > >
> > > >
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