Hey Saku, > From: Saku Ytti <s...@ytti.fi> > Sent: Tuesday, March 12, 2019 11:54 AM > > Hey Adam, > > > We did this exact testing a while back on Juniper 2nd and 3rd gen PFEs. > > The results showed it doesn't matter a tiny bit whether you do 5-tuple hash > or use flow label. > > So the bottom line is on modern NPUs it doesn't really matter. > > Does PFE mean PE or Trio? What exactly did you test? I don't see way to > disable L3+L4 keys and enable flow_label. > This was on Trio and sorry I should have clarified we did test with default L3+L4 keys on MPLS labelled packets -default in Junos (as baseline). And then repeated the test using flow labels -which forced Trio to ignore the L3+L4 keys and act solely on flow label. PPS performance wise we couldn’t really tell the difference (was in the noise).
adam
