[155464] in North American Network Operators' Group
Re: Provider standard ARP Timeout?
daemon@ATHENA.MIT.EDU (Shahab Vahabzadeh)
Fri Aug 10 11:47:18 2012
In-Reply-To: <CADs2+OG-vQMSze7g9wHMENnR99Xh4QTOPa0i37F00S3NBwAfMQ@mail.gmail.com>
From: Shahab Vahabzadeh <sh.vahabzadeh@gmail.com>
Date: Fri, 10 Aug 2012 20:15:59 +0430
To: Jay Nakamura <zeusdadog@gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I am using arp-timeout 900 (means 15min), because of having problems with
my upstream ethernet connection and everything is ok, and I have not seen
any relation between MAC Address aging time and that, aging time is default
300sec for me ;)
Thanks
On Fri, Aug 10, 2012 at 6:53 PM, 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?
>
>
--
Regards,
Shahab Vahabzadeh, Network Engineer and System Administrator
Cell Phone: +1 (415) 871 0742
PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 BF90
