HP Comware 5 Debug Manual Vol 2

Usage guidelines
If no parameter is specified, this command enables the IPv6 TCP event debugging of all tasks and sockets.
(Centralized devices.)
If no parameter is specified, this command enables the IPv6 TCP event debugging of all tasks, sockets,
and interface cards. (Distributed devices.)
If no parameter is specified, this command enables the IPv6 TCP event debugging of all tasks, sockets,
and member devices. (Centralized IRF devices.)
Examples
# Enable IPv6 TCP event debugging on the device that supports IPv6. The device's interfaces have IPv6
addresses.
<Sysname> terminal debugging
<Sysname> debugging tcp ipv6 event
# Enable the Telnet server function.
<Sysname> system-view
[Sysname] telnet server enable
# Create VTY users.
[Sysname] user-interface vty 0 4
[Sysname-ui-vty0-4] authentication-mode none
[Sysname-ui-vty0-4] user privilege level 3
Output similar to the following example is generated when you Telnet to the local device from another
device:
*Aug 4 02:09:23:581 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 0,
TCP6CB 0x08c76b84 created
// A TCP control block was created.
*Aug 4 02:09:23:581 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 0,
state Closed changed to Listening
// The TCP connection state changed to Listening.
*Aug 4 02:09:23:582 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 0,
Received MSS 1440, LA = 2::2:23, FA = 2::3:1026
// The MSS advertised by the peer was received.
*Aug 4 02:09:23:583 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 0,
state Listening changed to Syn_Rcvd
// The TCP connection state changed to Syn_Rcvd.
*Aug 4 02:09:23:583 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 0,
Advertising MSS 1440, LA = 2::2:23, FA = 2::3:1026
// IPv6 TCP advertised the local MSS to the peer.
*Aug 4 02:09:23:588 2006 Sysname IPV6TCP/7/TCP6 EVENT:
1123121363: task = VTYD(34), socketid = 5,
state Syn_Rcvd changed to Established
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