From: Frank Liang (liangfrank@xxxxxxxxxxx)
Date: Sat Feb 03 2001 - 15:28:39 GMT-3
David,
How if this 27bit network is an ISDN on demand circuit network. will that
cause another common problem: ISDN flapping?
I have an impression to do Mutual IGRP/OSPF redistribution, we have to
filter out the origin OSPF networks, so they will not become an external
route in the database.
Any thoughts?
FL
>From: David FAHED <dfahed@outremer.com>
>Reply-To: David FAHED <dfahed@outremer.com>
>To: "Fallon, Bill" <Bill.Fallon@getronics.com>,
>"ccielab@groupstudy.com" <ccielab@groupstudy.com>
>Subject: Re: IGRP Mutual Redistribution with OSPF
>Date: Fri, 02 Feb 2001 19:45:32 -0400
>
>The better way for the LAB (Because you can't use static) is:
>
>1) Redistribute IGRP on OSPF
>2) Show ip ospf database to verify that ospf learned the route 133.2.10.0
>as an
>external route
>3) Use a summary-address 133.2.10.0/24 on ospf process
>4) Redistribute ospf on IGRP
>
>Hope this help you!
>
>"Fallon, Bill" wrote:
>
> > Both Routers are using the same 133.2.x.x Network
> >
> > Router1->s0=133.2.10.1/27 mask: Ospf Area 0)
> > |
> > s1(IGRP s1=133.2.2.1/24)
> > |
> > |
> > |
> > |s0=133.2.2.2/24
> > Router2(IGRP)
> >
> > IGRP Mutual Redistribution with OSPF: In order for Router 2 to ping any
>and
> > all non /24 networks in the OSPF cloud there are only 3 ways I know of
>that
> > this can be accomplished. In particular I am concerned with the
>Directly
> > connected S0 with a /27 mask.
> >
> > 1) Default network advertisded by Router 1 to Router 2
> > 2) IP route 0.0.0.0 0.0.0.0 on Router 2
> > 3) Policy routing--set ip hext hop or default interface)
> >
> > Even if you try an Area 0 summary for the subnet on this S0 interface,
>the
> > directly connected route will be the one that is used in the
>Redistribution
> > to IGRP because of the Better admin distance on a C route (And IGRP of
> > course will ignore this route)
> >
> > Does any one know of any other way to get Router 2 to ping the /27
>interface
> > on Router 1 other then the 3 ways I have listed?
> >
> > Thanks,
> > Bill
> >
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