Provider standard ARP Timeout?

Saxon Jones saxon.jones at gmail.com
Fri Aug 10 09:52:03 CDT 2012


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 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?
>
>


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