From: Brian Dennis (brian@labforge.com)
Date: Sat May 24 2003 - 01:37:09 GMT-3
For each one sent the time is doubled. See below.
Router#deb ip tcp pa
TCP Packet debugging is on
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#ip tcp synwait-time 300
Router(config)#^Z
Router#telnet 10.1.1.1
07:41:36: %SYS-5-CONFIG_I: Configured from console by console
Trying 10.1.1.1 ...
*Mar 1 07:41:37.519: tcp0: O CLOSED 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:41:39.519: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:41:43.521: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:41:51.522: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:42:07.525: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:42:39.525: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
*Mar 1 07:43:43.526: tcp0: R SYNSENT 10.1.1.1:23 10.1.1.2:11002 seq
3267631083 OPTS 4 SYN WIN 4128
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Danny.Andaluz@triaton-na.com
Sent: Friday, May 23, 2003 7:05 PM
To: ccielab@groupstudy.com
Subject: TCP syn-wait time
Hello, Group. How often does a router send out a TCP syn message when
attempting to open a telnet session to another device?
TIA,
Danny
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2003 - 15:13:47 GMT-3