[108082] in North American Network Operators' Group

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Re: eigrp and managed ethernet

daemon@ATHENA.MIT.EDU (Stephen Kratzer)
Tue Sep 23 15:25:53 2008

From: Stephen Kratzer <kratzers@pa.net>
To: nanog@nanog.org
Date: Tue, 23 Sep 2008 15:25:37 -0400
In-Reply-To: <4fe778f0809231046l21cb354bnad9e9441b3cf9af4@mail.gmail.com>
Cc: Joseph Doran <joe.doran@comcast.net>
Reply-To: kratzers@pa.net
Errors-To: nanog-bounces@nanog.org

On Tuesday 23 September 2008 13:46:02 Joseph Doran wrote:
> EIGRP timers over WAN media default to 60 seconds. Neighborship will not
> expire for up to 180 seconds. To verify your EIGRP neighborship do a "show
> ip eigrp neighbor"
>
>
> Message: 6
> Date: Tue, 23 Sep 2008 09:25:34 -0700 (PDT)
> From: Philip Lavine <source_route@yahoo.com>
> Subject: Re: eigrp and managed ethernet
> To: nanog <nanog@merit.edu>
> Message-ID: <542140.85408.qm@web30802.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> What is really bizarre is that I am down for minutes not seconds and the
> timers never fire. If I don't manually passive the connection eigrp will
> for some reason think there is a neighbor even though I am unable to source
> ping across the WAN.

With regard to EIGRP, link type is dictated by the medium and speed. In this 
case, Ethernet will be considered a high-speed, broadcast link regardless of 
its use for LAN or WAN, so the hello/dead intervals should, by default, be 
5/15 seconds.


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