[j-nsp] recommended Netflow sampling rates?

[Brian Spade]

I'd be interested to learn this as well.  Also, how can you monitor the
router properly to know whether sampling is affecting performance (counters,
ram, cpu, etc.)

/b

On Thu, Aug 28, 2008 at 10:25 AM, Justin M. Streiner <
streiner at cluebyfour.org> wrote:

> All:
>
> This is aimed more at people who running Juniper routers in fairly high
> traffic environments, but any input is certainly welcome.
>
> I'm looking for recommendations/bast practices regarding what are good
> starting points for setting the Netflow sampling rates to balance accuracy
> of flow stats against not blowing the ASPIC-II out of the water...
>
> I've read a bit about this and the consensus seems to be that there is no
> consensus :)  I've seen implementations using between 1 packet out of every
> 100 to 1 out of 1000 with differing run lengths.
>
> We do use Netflow based monitoring, so there is a need to sample often
> enough to keep the data reasonably accurate.
>
> jms
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