[155461] in North American Network Operators' Group
Re: Provider standard ARP Timeout?
daemon@ATHENA.MIT.EDU (Saxon Jones)
Fri Aug 10 10:52:29 2012
In-Reply-To: <CADs2+OG-vQMSze7g9wHMENnR99Xh4QTOPa0i37F00S3NBwAfMQ@mail.gmail.com>
Date: Fri, 10 Aug 2012 08:52:03 -0600
From: Saxon Jones <saxon.jones@gmail.com>
To: Jay Nakamura <zeusdadog@gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I regularly used to lower the ARP timeout to 5 minutes (to match the
mac-address-table aging limit) on devices running on ATM LAN-E segments and
saw no ill effects.
-saxon
On 10 August 2012 08:23, Jay Nakamura <zeusdadog@gmail.com> wrote:
> Cisco default ARP timeout is 4 hours. Do anyone change that to
> something shorter in a provider environment for customer with Ethernet
> connectivity? What is a good value to set it to?
>
> Are there any impacts for lowering the timeout? Other than higher CPU
> util for doing ARP a lot more on the router?
>
>
