Re: Mutual Redistribution between different EIGRP AS

Hi Mark,

  Thanks for the suggestion.

Regards
Anantha Subramanian Natarajan

On Wed, Aug 26, 2009 at 6:55 AM, Mark Matters <markccie_at_gmail.com> wrote:

> It also helps to run debup ip routing to see what is happening. If you
> create a loop you will see it.
>
> On Wed, Aug 26, 2009 at 5:43 AM, Nathan Richie <nathanr_at_boice.net> wrote:
>
>> Anantha,
>>
>> You should not have any routing loops when you only have 1 router doing
>> redistribution between 2 protocols (and/or 1 router doing redistribution
>> between 2 AS's). The router is intelligent enough to know what routes it
>> injected into the other routing process. Also, physically it is not
>> possible to have a loop in your topology that you described below.
>>
>> Hope this helps.
>>
>> Nathan
>>
>> -----Original Message-----
>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>> Anantha Subramanian Natarajan
>> Sent: Wednesday, August 26, 2009 1:12 AM
>> To: Cisco certification
>> Subject: Mutual Redistribution between different EIGRP AS
>>
>> Hi All,
>>
>> I have a question based on mutual redistribution between 2 EIGRP AS .I
>> was
>> reading,blind redistribution between 2 EIGRP process(AS) may cause routing
>> loops.I am trying to understand a possible scenario that may happen.
>>
>> I am assuming the scenario to have only one mutual redistribution point,as
>> below
>>
>> R1 --*EIGRP AS 10*---R2 -*EIGRP AS 20*---R3 ---*RIPV2*---R4
>>
>> R2 is doing mutual redistribution between EIGRP AS 10 and EIGRP AS 20.R3
>> is
>> redistributing RIPV2 into EIGRP AS 20.Will there be any routing loops in
>> the
>> above topology.
>>
>> I am assuming EIGRP 10 routes going to AS 20 will not return back and
>> similarly the other way.Also assuming for RIPV2 routes redistributed into
>> eigrp 10 will not return back to AS 20.If that is not right,kindly correct
>> me.
>>
>> So trying to understand a looping scenario which would be possible when we
>> do mutual redistribution between 2 EIGRP AS process on the same router.
>>
>> Kindly help me to understand .
>>
>> Thanks for the assistance.
>>
>> Regards
>> Anantha Subramanian Natarajan
>>
>>
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Received on Wed Aug 26 2009 - 07:11:50 ART