TCP IP Illustrated

Discard p 15238 ack 1 win 4096 bsdi1029 svr4discard

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Unformatted text preview: e type-of-service information that is set by bsdi.) 1 0.0 2 0.004811 ( 0.0048) 3 4 5 6 7 8 9 10 11 12 13 0.006441 ( 0.0016) 6.102290 ( 6.0958) 6.259410 ( 0.1571) 24.480158 (18.2207) 25.493733 ( 1.0136) 28.493795 ( 3.0001) 34.493971 ( 6.0002) 46.484427 (11.9905) 70.485105 (24.0007) 118.486408 (48.0013) 182.488164 (64.0018) bsdi.1029 > svr4.discard: S 1747921409:1747921409(0) win 4096 <mss 1024> svr4.discard > bsdi.1029: S 3416685569:3416685569(0) ack 1747921410 win 4096 <mss 1024> bsdi.1029 > svr4.discard: . ack 1 win 4096 bsdi.1029 > svr4.discard: P 1:15(14) ack 1 win 4096 svr4.discard > bsdi.1029: . ack 15 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 bsdi.1029 > svr4.discard: P 15:23(8) ack 1 win 4096 file:///D|/Documents%20and%20Settings/bigini/Docu...homenet2run/tcpip/tcp-ip-illustrated/tcp_time.htm (2 of 29) [12/09/2001 14.47.26] Chapter 21. TCP Timeout and Retransmission 14 15 16 17 18 19 246.489921 (64.0018) 310.491678 (64.0018) 374.493431 (64.0018) 438.495196 (64.0018) 502.486941 (63.9917) 566.488478 (64.0015) bsdi.1029 > 1 win 4096 bsdi.1029 > 1 win 4096 bsdi.1029 > 1 win 4096 bsdi.1029 > 1 win 4096 bsdi.1029 > 1 win 4096 bsdi.1029 > 1 win 4096 svr4.discard: P 15:23(8) ack svr4.discard: P 15:23(8) ack svr4.discard: P 15:23(8) ack svr4.discard: P 15:23(8) ack svr4.discard: P 15:23(8) ack svr4.discard: R 23:23(0) ack Figure 21.1 Simple example of TCP's timeout and retransmission. Lines 1, 2, and 3 correspond to the normal TCP connection establishment. Line 4 is the transmission of "hello, world" (12 characters plus the carriage return and linefeed), and line 5 is its acknowledgment. We then disconnect the Ethernet...
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