On Dec 7, 2011, at 2:51 08PM, Meftah Tayeb wrote: > big thank for that > but, i am testing that for one day :)
Can you do an AStraceroute or manually translate those addresses into AS#s? That is, might level3 and tinet be using multiple AS#s, in which case this isn't unreasonable? > > > ----- Original Message ----- From: "Fred Baker" <f...@cisco.com> > To: "Meftah Tayeb" <tayeb.mef...@gmail.com> > Cc: <nanog@nanog.org> > Sent: Thursday, December 08, 2011 11:23 PM > Subject: Re: Traceroute explanation > > > This is just a guess, but I'll bet the route changed while you were measuring > it. > > Traceroute sends a request, awaits a response, sends a request, ... Suppose > that the route was > > 172.28.0.1 -> 10.16.0.2 > -> 41.200.16.1 > -> 172.17.2.25 > -> 213.140.58.10 > -> 195.22.195.125 > -> 4.69.151.13 > -> 213.200.68.61 > -> somewhere else > > and after the test got that far, two systems got inserted into the path > before level3, resulting in the route entering level3 at a different point, > 4.69.141.249. What you now have is > > 172.28.0.1 -> 10.16.0.2 > -> 41.200.16.1 > -> 172.17.2.25 > -> 213.140.58.10 > -> 195.22.195.125 > -> unknown > -> unknown > -> 4.69.141.249 > -> 77.67.66.154 > -> and so on > > The effect would be to get a result like this. > > Next time you see something like this, suggestion: repeat the traceroute and > see what you get. > > > On Dec 7, 2011, at 12:12 PM, Meftah Tayeb wrote: > >> Hey folks, >> i see a strange traceroute there >> >> Détermination de l'itinéraire vers www.rri.ro [193.231.72.52] >> avec un maximum de 30 sauts : >> >> 1 2 ms 1 ms 1 ms 172.28.0.1 >> 2 1 ms 1 ms 1 ms localhost [10.16.0.2] >> 3 10 ms 10 ms 13 ms 41.200.16.1 >> 4 11 ms 10 ms 11 ms 172.17.2.25 >> 5 21 ms 21 ms 21 ms 213.140.58.10 >> 6 34 ms 31 ms 55 ms pos14-0.palermo9.pal.seabone.net >> [195.22.197.125 >> ] >> 7 34 ms 33 ms 35 ms ae-5-6.bar2.marseille1.level3.net [4.69.151.13] >> 8 106 ms 68 ms 67 ms xe-1-1-0.mil10.ip4.tinet.net [213.200.68.61] >> 9 74 ms 73 ms 74 ms ae-1-12.bar1.budapest1.level3.net >> [4.69.141.249] >> 10 63 ms 63 ms 79 ms euroweb-gw.ip4.tinet.net [77.67.66.154] >> 11 85 ms 84 ms 84 ms v15-core1.stsisp.ro [193.151.28.1] >> 12 100 ms 100 ms 102 ms inet-crli1.qrli1.buh.ew.ro [81.24.28.226] >> 13 81 ms 81 ms 81 ms 193.231.72.10 >> 14 92 ms 92 ms 93 ms ip4-89-238-225-90.euroweb.ro [89.238.225.90] >> 15 89 ms 89 ms 89 ms webrri.rri.ro.72.231.193.in-addr.arpa >> [193.231.7 >> 2.52] >> Itinéraire déterminé. >> C:\Documents and Settings\TAYEB> >> Seabone, then level3, then Tinet, then level3, then tinet ? >> if is that a routing stufs that i don't know, please let me know :) >> i never saw that befaure >> >> Meftah Tayeb >> IT Consulting >> http://www.tmvoip.com/ >> phone: +21321656139 >> Mobile: +213660347746 >> >> >> __________ Information from ESET NOD32 Antivirus, version of virus signature >> database 6695 (20111208) __________ >> >> The message was checked by ESET NOD32 Antivirus. >> >> http://www.eset.com >> > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 6695 (20111208) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 6695 (20111208) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > > --Steve Bellovin, https://www.cs.columbia.edu/~smb