[c-nsp] Are there any disadvantages to aggressive netflow aging on a 6509?

[Nick Hilliard]

On 04/07/2011 15:59, Matthew.Coleman-Hamilton at servicebirmingham.co.uk >
However, my question is whether there are any disadvantages to aggressive
> aging, i.e. am I potentially missing flow information or exporting 
> incomplete flow information by moving away from the default settings and 
> aging flows quicker?

Correct.  Whether this actually matters depends on whether you are using
netflow for billing / graphing information or if you're just using it for
statistical sampling (e.g. measuring relative traffic amounts, detecting
DoS attacks, etc).

You will probably find that this configuration on a pfc3b will work until
about 100kpps / 150kpps of imix traffic.  After that, your netflow tcam
will start overflowing.

Nick