On Sun, 15 Mar 2009, Andy Bierlair wrote:
Im trying to run netflow on one of our Cisco core routers (SUP720-3BXL),
but I think I am hitting some limitations because of this:
%EARL_NETFLOW-SP-4-TCAM_THRLD: Netflow TCAM threshold exceeded, TCAM
Utilization [99%]
TCAM Utilization : 100%
Aggregated traffic: 7-8 GBIT/s
Packets per Second: 1.0 - 1.2 Million
AFAIK, at that traffic level, you will have to do sampled netflow. Try
mls sampling time-based 64 [in global]
mls netflow sampling [in interface]
and see if that stops your TCAM utilization issues. You may have to
sample even less flow data.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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