[c-nsp] Enabling NAT High-Speed Logging on a ASR1004

Andrew Simpson asimpson at loopback360.com
Wed May 3 05:55:11 EDT 2017

Morning/Evening All.

Has anyone enabled HSL on a ASR1004 before, or is able to test the
performance impacts of using this command?

Looking to de-nat some production flows but not got a test unit with a
load generator to check if enabling this command kills the NAT
performance of the box.

The NAT boxes currently does around 400k NAT Translation at peak.


Command i'm interested in.

ip nat log translations flow-export v9 udp destination addr port
source interface interface-number



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