From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Tue Nov 28 2006 - 23:48:07 ART
Configure the same EIGRP router-ID on two routers and they will not
accept external EIGRP routes originated from each other.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
________________________________
From: Ryan [mailto:ryan95842@gmail.com]
Sent: Tuesday, November 28, 2006 6:35 PM
To: Brian Dennis
Cc: ccielab@groupstudy.com
Subject: Re: Importance of EIGRP router-id command
Is this where you would use the router-id as the source IP for the
acl/prefix-list in a distribute-list?
or something else?
-Ryan
On 11/28/06, Brian Dennis <bdennis@internetworkexpert.com> wrote:
It can also be an obscure method for "filtering" external routes.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
________________________________
From: Narbik Kocharians [mailto:narbikk@gmail.com]
Sent: Tuesday, November 28, 2006 6:06 PM
To: Ryan
Cc: Brian Dennis; ccielab@groupstudy.com
Subject: Re: Importance of EIGRP router-id command
Think of MSDP and RP anycast configuration with EIGRP as the IGP, you
will see that this problem can easily occur, so best thing to do is
manually configure the routers with their unique router-ids. You never
know what will be added to a given network.
On 11/28/06, Ryan <ryan95842@gmail.com> wrote:
So assuming I'm not completely stupid and manage to successfully
configure
my routers running EIGRP and with unique loopbacks...is there
just no need
for the router-id in EIGRP?
It must have a use or function other than just good housekeeping
and
stopping, shall we say, less sophisticated engineer's form
screwing
themselves...
Am I off the mark or missing something?
Am I a less sophisticated engineer???? (don't answer that)
-Ryan
On 11/28/06, Brian Dennis <bdennis@internetworkexpert.com >
wrote:
>
> Preventing Duplicate EIGRP Router IDs
>
> http://www.cisco.com/warp/public/103/eigrp-dup-id.html
>
> HTH,
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of
> Ryan
> Sent: Tuesday, November 28, 2006 4:07 PM
> To: ccielab@groupstudy.com
> Subject: Importance of EIGRP router-id command
>
> What is the importance or significances of the router-id
command under
> EIGRP. I understand for OSFP and BGP, but there is little
mention of any
> significance under EIGRP. Is there any circumstance, other
than good
> housekeeping, where it would be needed or desirable to have
configured?
>
>
> -Ryan
>
>
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