There isn't enough information to answer your question. But one possible reason is that you're choosing a different path in SW and HW. Or that the answers are not even coming from host you think (tshark might add information).
a) is 1.4ms possible in terms of speed-of-light? b) where are 24ms packets sitting, do you also have longer path available or are you heavily congested causing massive queueing delay? On Mon, 23 Mar 2020 at 15:09, Robert Raszuk <[email protected]> wrote: > > Hi, > > Would anyone have any idea why IP packets with options are forwarded via > MX104 20x faster then regular IP packets ? > > "fast" PFE path - 24-35 ms > "slow" RE path - 1-4 ms > > Example (I used record route to force IP Options punt to slow path): > > rraszuk@cto-lon2:~$ ping 62.189.71.209 -R -v > PING 62.189.71.209 (62.189.71.209) 56(124) bytes of data. > 64 bytes from 62.189.71.209: icmp_seq=1 ttl=63 time=1.44 ms > RR: 69.191.176.206 > 10.249.23.7 > 62.189.71.209 > 10.249.23.7 > 69.191.176.206 > > 64 bytes from 62.189.71.209: icmp_seq=2 ttl=63 time=1.38 ms > 64 bytes from 62.189.71.209: icmp_seq=3 ttl=63 time=1.46 ms > 64 bytes from 62.189.71.209: icmp_seq=4 ttl=63 time=1.41 ms > 64 bytes from 62.189.71.209: icmp_seq=5 ttl=63 time=1.49 ms > 64 bytes from 62.189.71.209: icmp_seq=6 ttl=63 time=1.46 ms > 64 bytes from 62.189.71.209: icmp_seq=8 ttl=63 time=1.52 ms > 64 bytes from 62.189.71.209: icmp_seq=9 ttl=63 time=2.84 ms > 64 bytes from 62.189.71.209: icmp_seq=10 ttl=63 time=1.77 ms > ^C > --- 62.189.71.209 ping statistics --- > 10 packets transmitted, 10 received, 0% packet loss, time 9014ms > rtt min/avg/max/mdev = 1.386/1.892/4.117/0.849 ms > > Now I use normal ping running between 62.189.71.209 & 69.191.176.206 in > "fast" path: > > rraszuk@cto-lon2:~$ ping 62.189.71.209 -v > PING 62.189.71.209 (62.189.71.209) 56(84) bytes of data. > 64 bytes from 62.189.71.209: icmp_seq=1 ttl=63 time=24.1 ms > 64 bytes from 62.189.71.209: icmp_seq=2 ttl=63 time=31.5 ms > 64 bytes from 62.189.71.209: icmp_seq=3 ttl=63 time=24.1 ms > 64 bytes from 62.189.71.209: icmp_seq=4 ttl=63 time=24.1 ms > 64 bytes from 62.189.71.209: icmp_seq=5 ttl=63 time=24.0 ms > 64 bytes from 62.189.71.209: icmp_seq=6 ttl=63 time=24.1 ms > ^C > --- 62.189.71.209 ping statistics --- > 6 packets transmitted, 6 received, 0% packet loss, time 5006ms > rtt min/avg/max/mdev = 24.097/25.369/31.563/2.774 ms > rraszuk@cto-lon2:~$ > > Best, > R. > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp -- ++ytti _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
