Provider standard ARP Timeout?

Shahab Vahabzadeh sh.vahabzadeh at gmail.com
Fri Aug 10 10:45:59 CDT 2012


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 at 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
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