TCP IP Illustrated

The example in figure 85 is from the host sun to the

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Unformatted text preview: otal time from the sending host to that router, this can (and does) happen. The example in Figure 8.5 is from the host sun to the author's publisher. sun % traceroute aw.com traceroute to aw.com (192.207.117.2), 30 hops max, 40 byte packets 1 netb.tuc.noao.edu (140.252.1.183) 227 ms 227 ms 234 ms 2 gateway.tuc.noao.edu (140.252.1.4) 233 ms 229 ms 234 ms 3 butch.telcom.arizona.edu (140.252.104.2) 233 ms 229 ms 234 ms 4 Gabby.Telcom.Arizona. EDU (128.196.128.1) 264 ms 228 ms 234 ms 5 Westgate.Telcom.Arizona. EDO (192.80.43.2) 234 ms 228 ms 234 ms 6 uu-ua.AZ.westnet.net (192.31.39.233) 263 ms 258 ms 264 ms 7 enssl42.UT.westnet.net (192.31.39.21) 263 ms 258 ms 264 ms 8 t3-2.Denver-cnss97.t3.ans.net (140.222.97.3) 293 ms 288 ms 275 ms 9 t3-3.Denver-cnss96.t3.ans.net (140.222.96.4) 283 ms 263 ms 261 ms 10 t3-1.St-Louis-cnss80.t3.ans.net (140.222.80.2) 282 ms 288 ms 294 ms 11 t3-1.Chicago-cnss24.t3.ans.net (140.222.24.2) 293 ms 288 ms 294 ms 12 t3-2.Cleveland-cnss40.t3.ans.net (140.222.40.3) 294 ms 288 ms 294 ms 13 t3-1.New-York-cnss32.t3.ans.net (140.222.32.2) 323 ms 318 ms 324 ms 14 t3-1.Washington-DC-cnss56.t3.ans.net (140.222.56.2) 323 ms 318 ms 324 ms 15 t3-0.Washington-DC-cnss58.t3.ans.net (140.222.58.1) 324 ms 318 ms 324 ms 16 t3-0.enssl36.t3.ans.net (140.222.136.1) 323 ms 318 ms 324 ms file:///D|/Documents%20and%20Settings/bigini/Docu...homenet2run/tcpip/tcp-ip-illustrated/tracerou.htm (8 of 17) [12/09/2001 14.46.48] Traceroute Program 17 ms 18 19 20 Washington.DC.ALTER.NET (192.41.177.248) 323 ms 377 ms 324 Boston.MA.ALTER.NET (137.39.12.2) 324 ms 347 ms 324 ms AW-gw.ALTER.NET (137.39.62.2) 353 ms 378 ms 354 ms aw.com (192.207.117.2) 354 ms 349 ms 354 ms Figure 8.5 traceroute from host sun.tuc.noao.edu to aw.com. This time the datagrams enter the regional network westnet.net (TTLs 6 and 7) after leaving the telcom.arizona.edu network. They then enter the NSFNET backbone, t3.ans.net, which is run by Advanced Network & Services. (T3 is the common abbreviation for the 4...
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