On 5/3/19 5:14 AM, Martin T wrote: > Hi Octavio, > > instead of a two-card laptop I used the available ports in server > named "svr", but in principle I built the setup you described: > > CISCO1921[Gi0/0] <-> [eno1]test-br[eno2] <-> [eno3]svr
I intended to have an independent measurement tool (including an independent clock) but that should be good enough too, as it's highly unlikely that you have serious clock drifting issues. > Success rate is 100 percent (5/5), round-trip min/avg/max = 8/9/12 ms > As seen above, minimum measurement was 8ms and average was 9ms. I don't know how far (in ms) is the router from the server but max=12ms also looks way off. > Cisco IOS ping command inserts the timestamp into the payload of the > ICMP "echo request" message and at least it seems to increment it, i.e > that part seems to be fine. Does it? If you are referring to the -ttt output than that is done by tcpdump. Good experiment. Sorry to say that I don't know why the measurements are so inaccurate. I kow the Cisco ISR 1912 is a very low-end device but I don't know if so enough to get into this level of inaccuracy. Octavio. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
