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Re: Traceroute explanation
From: "Meftah Tayeb" <tayeb.meftah () gmail com>
Date: Wed, 7 Dec 2011 22:04:31 +0200

Using LFT:
root () debian:~# lft 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1  172.28.1.1 (172.28.1.1)  0.798 ms  0.711 ms
2  10.16.0.2 (10.16.0.2)  0.414 ms  0.331 ms
3  41.200.16.1 (41.200.16.1)  11.400 ms  11.474 ms
4  172.17.2.25 (172.17.2.25)  10.184 ms  11.322 ms
5  213.140.58.10 (213.140.58.10)  11.264 ms  10.623 ms
6  212.73.253.65 (212.73.253.65)  30.330 ms  32.391 ms
7  ae-4-5.bar1.Marseille1.Level3.net (4.69.151.9)  32.177 ms  32.219 ms
8  ae-7-7.ebr1.Paris1.Level3.net (4.69.143.238)  42.160 ms  42.318 ms
root () debian:~# lft www.rri.ro
traceroute to www.rri.ro (193.231.72.52), 30 hops max, 60 byte packets
1  172.28.1.1 (172.28.1.1)  0.819 ms  0.737 ms
2  10.16.0.2 (10.16.0.2)  0.402 ms  0.335 ms
3  41.200.16.1 (41.200.16.1)  10.592 ms  10.209 ms
4  172.17.2.25 (172.17.2.25)  10.146 ms  10.559 ms
5  213.140.58.10 (213.140.58.10)  11.258 ms  10.369 ms
6  pos14-0.palermo9.pal.seabone.net (195.22.197.125)  30.817 ms  31.439 ms
7  ae-5-6.bar2.Marseille1.Level3.net (4.69.151.13)  33.968 ms  31.395 ms
8 ge-0-0-0.mil19.ip4.tinet.net (213.200.68.145) 57.178 ms xe-1-1-0.mil10.ip4.
tinet.net (213.200.68.61)  57.749 ms
9  ae-1-12.bar1.Budapest1.Level3.net (4.69.141.249)  61.835 ms  62.317 ms
10  euroweb-gw.ip4.tinet.net (77.67.66.154)  61.361 ms  60.292 ms
11  v15-core1.stsisp.ro (193.151.28.1)  163.662 ms  144.245 ms
12  inet-crli1.qrli1.buh.ew.ro (81.24.28.226)  91.309 ms  89.880 ms
13  193.231.72.10 (193.231.72.10)  80.790 ms  79.354 ms
14  ip4-89-238-225-90.euroweb.ro (89.238.225.90)  91.067 ms  90.906 ms
15 webrri.rri.ro.72.231.193.in-addr.arpa (193.231.72.52) 79.196 ms 79.389 ms
root () debian:~#

----- Original Message ----- From: "Raymond Dijkxhoorn" <raymond () prolocation net>
To: "Meftah Tayeb" <tayeb.meftah () gmail com>
Cc: "Steven Bellovin" <smb () cs columbia edu>; <nanog () nanog org>
Sent: Thursday, December 08, 2011 11:40 PM
Subject: Re: Traceroute explanation


Hai!

Check with lft or mtr ...

Thanks,
Raymond Dijkxhoorn, Prolocation


Op 7 dec. 2011 om 20:56 heeft "Meftah Tayeb" <tayeb.meftah () gmail com> het volgende geschreven:

please tel me how to ?
i don't know astraceroute:)

----- Original Message ----- From: "Steven Bellovin" <smb () cs columbia edu>
To: "Meftah Tayeb" <tayeb.meftah () gmail com>
Cc: "Fred Baker" <fred () cisco com>; <nanog () nanog org>
Sent: Thursday, December 08, 2011 11:33 PM
Subject: Re: Traceroute explanation


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" <fred () cisco com>
To: "Meftah Tayeb" <tayeb.meftah () 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







__________ 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




__________ Information from ESET NOD32 Antivirus, version of virus signature database 6695 (20111208) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com





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