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Re: Provider standard ARP Timeout?
From: Shahab Vahabzadeh <sh.vahabzadeh () gmail com>
Date: Fri, 10 Aug 2012 20:15:59 +0430

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 ;)

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?

Shahab Vahabzadeh, Network Engineer and System Administrator

Cell Phone: +1 (415) 871 0742
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