nanog mailing list archives

Re: eigrp and managed ethernet


From: "Kevin Hodle" <kevin.hodle () gmail com>
Date: Tue, 23 Sep 2008 11:59:14 -0500

You may want to check out BFD for EIGRP,

http://www.cisco.com/en/US/technologies/tk648/tk365/tk207/technologies_white_paper0900aecd80243fe7_ps6599_Products_White_Paper.html

Regards,
Kevin

On Tue, Sep 23, 2008 at 11:25 AM, Philip Lavine <source_route () yahoo com> wrote:
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.



----- Original Message ----
From: Matthew Huff <mhuff () ox com>
To: Philip Lavine <source_route () yahoo com>; nanog <nanog () merit edu>
Sent: Tuesday, September 23, 2008 8:59:14 AM
Subject: RE: eigrp and managed ethernet

Correct. Eigrp neighbor connectivity has a short-cut when L2 connectivity goes down, otherwise it will use the eigrp 
neighbor hold-down timer. You can decrease that timer:

interface fa0/0
 ip hello-interval eigrp p x
 ip hold-time eigrp p y

where p is your eigrp as-number, and x is how often you want the hello (in seconds) and y is the max hold-down timer. 
Generally y is = x * 3

http://www.cisco.com/en/US/docs/ios/12_2/iproute/command/reference/1rfeigrp.html


----
Matthew Huff       | One Manhattanville Rd
OTA Management LLC | Purchase, NY 10577
www.ox.com                | Phone: 914-460-4039
aim: matthewbhuff  | Fax:   914-460-4139

-----Original Message-----
From: Philip Lavine [mailto:source_route () yahoo com]
Sent: Tuesday, September 23, 2008 11:43 AM
To: nanog
Subject: eigrp and managed ethernet

For some reason when I lose layer 3 connectivity between two managed Ethernet sites EIGRP does not bounce.Is this 
because the physical interface does not bounce?







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