18.5 Monitoring the network

18.5.3 traceroute

traceroute is a PD program for tracing the route taken by a packet enroute to a host. To trace a packet to SunSite (Sun's anonymous ftp archive at UNC) execute:

% traceroute sunsite.unc.edu
traceroute to sunsite.unc.edu (152.2.22.81), 30 hops max, 40 byte packets
1 son-se7-eth2.acs.ohio-state.edu (128.146.6.1) 10 ms 0 ms 10 ms
2 son-se4-eth3.acs.ohio-state.edu (164.107.100.1) 10 ms 10 ms 0 ms
3 kc1.acs.ohio-state.edu (128.146.3.1) 20 ms 10 ms 10 ms
4 cicnet.ohio-dmz.net (192.68.143.1) 20 ms 30 ms 10 ms
5 um-osu.cic.net (131.103.11.46) 20 ms 30 ms 30 ms
6 fd-0.enss131.t3.ans.net (192.203.195.1) 20 ms 30 ms 20 ms
7 t3-2.Cleveland-cnss41.t3.ans.net (140.222.41.3) 30 ms 20 ms 40 ms
8 t3-3.Cleveland-cnss40.t3.ans.net (140.222.40.4) 30 ms 20 ms 20 ms
9 t3-1.New-York-cnss32.t3.ans.net (140.222.32.2) 50 ms 40 ms 50 ms
10 t3-1.Washington-DC-cnss56.t3.ans.net (140.222.56.2) 40 ms 50 ms 60 ms
11 t3-2.Greensboro-cnss72.t3.ans.net (140.222.72.3) 60 ms 60 ms 60 ms
12 t3-0.Greensboro-cnss73.t3.ans.net (140.222.73.1) 50 ms 60 ms 60 ms
13 t3-0.Greensboro-cnss75.t3.ans.net (140.222.75.1) 50 ms 60 ms 50 ms
14 t1-0.enss150.t3.ans.net (140.222.150.1) 120 ms 140 ms 190 ms
15 rtp3-gw.concert.net (192.101.21.253) 170 ms 180 ms 200 ms
16 uncch-gw.concert.net (128.109.3.2) 160 ms 130 ms 110 ms
17 SunSite.unc.edu (152.2.22.81) 130 ms 100 ms 110 ms

Unix System Administration - 8 AUG 1996

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