TCP IP Illustrated

Echo vangogh4107 p 11413 ack 14 win 4096 vangogh4107

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Unformatted text preview: d here hello, world type end-of-file character to terminate ^D vangogh % sock -v -R220000 bsdi.tuc.noao.edu echo SO_RCVBUF = 220000 connected on 128.32.130.2.4108 to 140.252.13.35.7 TCP_MAXSEG = 512 type this line bye, bye and it's echoed here bye, bye type end-of-file character to terminate ^D Figure 24.7 shows the tcpdump output for these two connections. (We have deleted the final 8 lines for the second connection, because nothing new is shown.) 1 0.0 2 0.003078 ( 0.0031) 3 4 5 6 7 0.300255 ( 0.2972) 16.920087 (16.6198) 16.923063 ( 0.0030) 17.220114 ( 0.2971) 26.640335 ( 9.4202) vangogh.4107 > bsdi.echo: S 462402561:462402561(0) win 65535 <mss 512,nop,wscale l,nop,nop,timestamp 995351 0> bsdi.echo > vangogh.4107: S 177032705:177032705(0) ack 462402562 win 4096 <mss 512> vangogh.4107 > bsdi.echo: . ack 1 win 65535 vangogh.4107 > bsdi.echo: P 1:14(13) ack 1 win 65535 bsdi.echo > vangogh.4107: P 1:14(13) ack 14 win 4096 vangogh.4107 > bsdi.echo: . ack 14 win 65535 vangogh.4107 > bsdi.echo: F 14:14(0) ack 14 win 65535 file:///D|/Documents%20and%20Settings/bigini/Docu.../homenet2run/tcpip/tcp-ip-illustrated/tcp_fut.htm (11 of 20) [12/09/2001 14.47.34] Chapter 24. TCP Futures and Performance 26.642688 ( 0.0024) 26.643964 ( 9 0.0013) 26.880274 ( 10 0.2363) 8 11 44.400239 (17.5200) 12 44.403358 ( 0.0031) 13 44.700027 ( 0.2967) bsdi.echo > vangogh.4107: . ack 15 win 4096 bsdi.echo > vangogh.4107: F 14:14(0) ack 15 win 4096 vangogh.4107 > bsdi.echo: . ack 15 win 65535 vangogh.4108 > bsdi.echo: S 468226561:468226561(0) win 65535 <mss 512,nop,wscale 2,nop,nop,timestamp 995440 0> bsdi.echo > vangogh.4108: S 182792705:182792705(0) ack 468226562 win 4096 <mss 512> vangogh.4108 > bsdi.echo: . ack 1 win 65535 remainder of this connection deleted Figure 24.7 Example of window scale option. In line 1 vangogh advertises a window of 65535 and specifies the window scale option with a shift count of 1. This advertised window is the largest possible value that is less than the receive buffer size (128000), bec...
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This test prep was uploaded on 04/04/2014 for the course ECE EL5373 taught by Professor Guoyang during the Spring '12 term at NYU Poly.

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