[155460] in North American Network Operators' Group

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Provider standard ARP Timeout?

daemon@ATHENA.MIT.EDU (Jay Nakamura)
Fri Aug 10 10:24:45 2012

Date: Fri, 10 Aug 2012 10:23:26 -0400
From: Jay Nakamura <zeusdadog@gmail.com>
To: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

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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