Date: Sat, 11 Jan 2014 15:50:00 -0500 From: mike miskulin <birdfund@yahoo.com> To: freebsd-questions@freebsd.org Subject: traceroute vs ping -R Message-ID: <20140111154959.C363.AA011270@yahoo.com>
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Hello - Trying to get my head around something. Below are output of ping and traceroute to the same host. I have used ping -R to record the route. I do understand that ping -R will only give a limited number of hops (9?), that is not the question. My question is - why is the output of ping -R so different than traceroute? What happened to the routes listed in the ping -R? Two examples listed below ping -R -c 1 www.bnl.gov PING cache3.bnl.gov (130.199.3.21): 56 data bytes 64 bytes from 130.199.3.21: icmp_seq=0 ttl=55 time=164.759 ms RR: L1.NYCMNY-VFTTP-171.verizon-gni.net (130.81.234.129) B400.NYCMNY-LCR-21.verizon-gni.net (130.81.199.163) lo0-0.NY325-BB-RTR1.verizon-gni.net (130.81.254.41) 0.lo0.BR1.NYC1.ALTER.NET (137.39.3.13) lo-0.edge2.NewYork2.Level3.net (4.68.185.31) vlan723.car4.NewYork1.Level3.net (4.28.72.233) aofacr5-ip-b-bnlmr2.es.net (134.55.220.73) bnl-mr2.es.net (134.55.200.102) cm0515-901.bnl.gov (130.199.3.124) --- cache3.bnl.gov ping statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 164.759/164.759/164.759/0.000 ms traceroute -n www.bnl.gov traceroute to cache3.bnl.gov (130.199.3.21), 64 hops max, 40 byte packets 1 4.69.134.74 22.045 ms 4.69.134.66 22.459 ms 4.69.148.42 22.432 ms 2 4.69.148.42 19.945 ms 4.69.134.78 24.988 ms 4.69.134.70 27.494 ms 3 4.69.134.78 17.411 ms 4.69.148.38 29.987 ms 4.69.134.74 22.518 ms 4 4.69.148.38 29.938 ms 4.69.134.66 27.454 ms 4.69.148.34 22.485 ms 5 4.69.134.70 19.964 ms 19.969 ms 4.69.134.66 22.477 ms 6 4.69.134.74 29.943 ms 4.69.134.70 19.972 ms 4.69.148.46 19.964 ms 7 4.69.134.70 19.963 ms 4.69.134.66 32.516 ms 22.424 ms 8 4.69.148.38 22.527 ms 4.69.134.74 29.960 ms 4.69.148.38 22.460 ms 9 4.69.155.198 97.481 ms 4.69.155.70 42.435 ms 157.520 ms 10 4.28.72.234 14.955 ms 19.949 ms 22.438 ms 11 134.55.221.138 27.508 ms 42.420 ms 134.55.220.74 19.993 ms 12 198.124.216.190 27.503 ms 19.970 ms 19.995 ms 13 130.199.3.21 19.963 ms !Z 19.995 ms !Z 19.964 ms !Z ping -R -c 1 www.erh.noaa.gov PING a1856.g.akamai.net (23.66.230.18): 56 data bytes 64 bytes from 23.66.230.18: icmp_seq=0 ttl=62 time=22.280 ms RR: L1.NYCMNY-VFTTP-171.verizon-gni.net (130.81.234.129) B300.NYCMNY-LCR-21.verizon-gni.net (130.81.199.155) 0.lo0.GW9.IAD8.ALTER.NET (137.39.7.220) a23-66-230-1.deploy.static.akamaitechnologies.com (23.66.230.1) a23-66-230-18.deploy.static.akamaitechnologies.com (23.66.230.18) a23-66-230-18.deploy.static.akamaitechnologies.com (23.66.230.18) akamai.customer.alter.net (152.179.50.174) 0.lo0.GW9.IAD8.ALTER.NET (137.39.7.220) L100.NYCMNY-VFTTP-59.verizon-gni.net (72.89.90.1) --- a1856.g.akamai.net ping statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 22.280/22.280/22.280/0.000 ms traceroute www.erh.noaa.gov traceroute: Warning: www.erh.noaa.gov has multiple addresses; using 23.67.244.107 traceroute to a1856.g.akamai.net (23.67.244.107), 64 hops max, 40 byte packets 1 a23-67-244-107.deploy.static.akamaitechnologies.com (23.67.244.107) 16.884 ms 17.379 ms 17.497 ms
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