From: Patrick Bikar (pbikar@xxxxxxxxx)
Date: Mon Feb 05 2001 - 17:05:53 GMT-3
Hello Frank,
I never heard about this type of isdn flapping, and can't seem to understand :
could you give some more explanation, or a good link ?
Thanks and cheers,
Patrick.
At 15:28 03/02/2001 +0000, Frank Liang wrote:
>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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