[j-nsp] flow sampling: what packets are chosen?

[Sebastian Wiesinger]

* sthaug at nethelp.no <sthaug at nethelp.no> [2013-07-25 01:21]:
> > "When using inline IPFIX the only valid rate is 1.  The option
> > run-length isn't configurable, because there's no need to sample data
> > from the perspective of the microcode in the Trio Lookup Block.  Every
> > packet will be inspected and is subject to flow export."
> 
> We're doing inline IPFIX with 1:100 sampling rate, and getting sensible
> data. This is on an MPC-3D-16XGE-SFPP line card. Config snippet:

I can confirm this, we use a higher sampling rate on MX80 and on the
MPC-3D-16XGE-SFPP and on both we get valid data.

Regards

Sebastian

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