exemple PING sous Unix

on essaie d'abord à l'intérieur de l'IPST (moins d'1 ms), à l'ULP (un peu plus d'1 ms), chez Yahoo, aux Etats Unis (moins de 0,2 s)

pat@ipst-pat:~ > ping www-ipst.u-strasbg.fr
PING www-ipst.u-strasbg.fr (130.79.50.130): 56 data bytes
64 bytes from 130.79.50.130: icmp_seq=0 ttl=255 time=0.725 ms
64 bytes from 130.79.50.130: icmp_seq=1 ttl=255 time=0.382 ms
64 bytes from 130.79.50.130: icmp_seq=2 ttl=255 time=0.379 ms
64 bytes from 130.79.50.130: icmp_seq=3 ttl=255 time=0.375 ms
64 bytes from 130.79.50.130: icmp_seq=4 ttl=255 time=0.382 ms
--- www-ipst.u-strasbg.fr ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 0.375/0.448/0.725 ms

pat@ipst-pat:~ > ping www-ulp.u-strasbg.fr
PING currif.u-strasbg.fr (130.79.130.84): 56 data bytes
64 bytes from 130.79.130.84: icmp_seq=0 ttl=62 time=5.550 ms
64 bytes from 130.79.130.84: icmp_seq=1 ttl=62 time=2.052 ms
64 bytes from 130.79.130.84: icmp_seq=2 ttl=62 time=2.834 ms
64 bytes from 130.79.130.84: icmp_seq=3 ttl=62 time=1.333 ms
64 bytes from 130.79.130.84: icmp_seq=4 ttl=62 time=1.420 ms
--- currif.u-strasbg.fr ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 1.333/2.637/5.550 ms

pat@ipst-pat:~ > ping www.yahoo.com
PING www.yahoo.akadns.net (66.218.71.86): 56 data bytes
64 bytes from 66.218.71.86: icmp_seq=0 ttl=46 time=182.005 ms
64 bytes from 66.218.71.86: icmp_seq=1 ttl=46 time=177.446 ms
64 bytes from 66.218.71.86: icmp_seq=2 ttl=46 time=177.088 ms
64 bytes from 66.218.71.86: icmp_seq=3 ttl=46 time=177.061 ms
64 bytes from 66.218.71.86: icmp_seq=4 ttl=46 time=177.043 ms
--- www.yahoo.akadns.net ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 177.043/178.128/182.005 ms

pat@ipst-pat:~ >

Patrick TRAU, ULP - IPST, 18/10/02