Date: Sat, 1 Jun 2002 11:19:43 GMT From: Abc Xyz <abc@anchorageinternet.org> To: "freebsd-questions" <questions@freebsd.org> Subject: traceroute precision Message-ID: <200206011119.g51BJhT39093@groggy.anc.acsalaska.net>
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FBSD 4.5 i am not sure why this is, or if it is something that 'needs' correction - but if i traceroute from 2 different endpoints - to each other, i get VASTLY different results. from what i understand of ICMP (tiny bit) this should not occur - ie - each hop should be measured individually regardless of the speed of the endpoints. the precision from a modem link to the net is an order of magnitude off from a cable connection to the net: (endpoints snipped) MODEM connection 2 enh-2.anc.acsalaska.net (208.151.126.3) 111.936 ms 207.485 ms 294.905 ms 3 fe4-1-0-cr5.nwc.acsalaska.net (198.70.245.1) 108.952 ms 105.606 ms 108.704 ms 4 ge1-0-cr1i.nwc.acsalaska.net (209.112.207.34) 109.379 ms 104.312 ms 118.497 ms 5 12.124.174.5 (12.124.174.5) 98.920 ms 103.121 ms 108.689 ms 6 br2-h30.st6wa.ip.att.net (12.123.203.2) 148.884 ms 195.901 ms 148.154 ms 7 gbr1-p70.st6wa.ip.att.net (12.123.44.57) 148.652 ms 150.879 ms 148.333 ms 8 gbr4-p70.st6wa.ip.att.net (12.122.5.161) 158.059 ms 145.968 ms 518.500 ms 9 tbr2-p012402.cgcil.ip.att.net (12.122.10.61) 218.144 ms 185.678 ms 378.664 ms 10 tbr2-p013602.cb1ma.ip.att.net (12.122.10.33) 249.159 ms 235.658 ms 218.744 ms 11 gbr1-p90.cb1ma.ip.att.net (12.122.11.202) 209.136 ms 215.738 ms 228.660 ms 12 gar1-p360.cb1ma.ip.att.net (12.123.40.97) 539.291 ms 255.717 ms 209.107 ms 13 12.125.39.46 (12.125.39.46) 288.720 ms 213.702 ms 238.573 ms 14 bar02-p0-0.ndhmhe1.ma.attbb.net (24.128.190.9) 208.288 ms 235.326 ms 207.966 ms 15 24.91.0.4 (24.91.0.4) 219.709 ms 272.120 ms 218.671 ms 16 ubr01-p2-0.sctthe1.ma.attbb.net (65.96.0.170) 228.560 ms 215.409 ms 218.512 ms CABLE connection traceroute to 208.151.119.232 (208.151.119.232), 30 hops max, 40 byte packets 2 bar01-p6-0-0.sctthe1.ma.attbb.net (65.96.0.169) 22.346 ms 14.484 ms 15.678 ms 3 24.91.0.6 (24.91.0.6) 22.484 ms 15.003 ms 15.975 ms 4 bar03-p5-0-0.ndhmhe1.ma.attbb.net (24.128.190.10) 21.938 ms 15.192 ms 16.066 ms 5 12.125.39.45 (12.125.39.45) 21.996 ms 16.149 ms 17.497 ms 6 gbr1-p70.cb1ma.ip.att.net (12.123.40.98) 25.372 ms 17.918 ms 15.157 ms 7 tbr2-p013501.cb1ma.ip.att.net (12.122.11.201) 24.645 ms 32.523 ms 21.391 ms 8 tbr2-p012401.cgcil.ip.att.net (12.122.10.34) 62.345 ms 41.901 ms 41.234 ms 9 gbr4-p20.st6wa.ip.att.net (12.122.10.62) 84.534 ms 78.697 ms 78.892 ms 10 gbr2-p100.st6wa.ip.att.net (12.122.5.170) 86.212 ms 79.388 ms 77.438 ms 11 gar1-p370.st6wa.ip.att.net (12.123.44.62) 86.147 ms 78.116 ms 79.452 ms 12 12.123.203.1 (12.123.203.1) 133.114 ms 123.308 ms 122.844 ms 13 12.124.174.10 (12.124.174.10) 129.084 ms 123.444 ms 124.659 ms 14 fe0-0-101-cr1i.nwc.acsalaska.net (209.112.154.62) 131.184 ms fe0-0-100-cr1i.nwc.acsalaska.net (209.112.154.30) 128.648 ms 123.761 ms 15 ge0-0-0-cr5.nwc.acsalaska.net (209.112.207.33) 315.502 ms 134.631 ms 124.353 ms 16 enh-2.anc.acsalaska.net (208.151.126.3) 131.223 ms 127.417 ms 124.663 ms please Cc off list. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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