Depending on the hardware platform, it may not be supported (e.g. MX3D/Trio ignores it).
On Sun, Feb 24, 2013 at 4:45 PM, Justin M. Streiner <strei...@cluebyfour.org > wrote: > On Sun, 24 Feb 2013, Piotr wrote: > > I'd like ask about this options, I made some test sampling with >> nfdump+nfsen and i don't see the difference wheter this option is on or >> off. What is exactly advantages and disadvantages of this option in >> practise ? >> > > If you do, for example, 1 out-of 100 sampling with a run-length of 4, you > will sample one packet out of 100, plus the next 4 packets, so you're > functionally sampling 5 packets out of 100. > > The reason your nfsen graphs don't look any different is because > nfsen/ndfump don't know what to do with those extra 4 packets. If you want > 5 out-of 100 sampling to show up in your graphs, you'd need to changing > your sampling rate to 1 out-of 20, and not use the 'run-length' feature, > and then change the expected sampling rate in nfsen accordingly. > > jms > > ______________________________**_________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/**mailman/listinfo/juniper-nsp<https://puck.nether.net/mailman/listinfo/juniper-nsp> > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp