[157866] in North American Network Operators' Group
High CPU utilization w/VRF NAT - Cat6500
daemon@ATHENA.MIT.EDU (Rodrick Brown)
Tue Nov 13 13:42:11 2012
From: Rodrick Brown <rodrick.brown@gmail.com>
Date: Tue, 13 Nov 2012 13:39:49 -0500
To: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
~80 or so static NAT's configured, multiple versions of IOS tested.
Most of the traffic is being punted to the CPU through the NAT interfaces
causing high CPU utilization.
Increasing fast aging timers had 0 benefit, TCAM utilization is less than 5%
Does anyone have any thoughts on other configuration tweaks I should try? I
think we're at the point where new hardware maybe FWSM or another platform
for NAT should be explored.
--RB
