Allied Telesis AT-8600, RAPIER I, X900-48FE, AT-8900, AT-8700XL, AT-9900, AT-9800 Enable l2tp debug

Software Version 2.8.1 85

enable l2tp debug

Syntax ENAble L2TP DEBug={ALLDECodePKTSTAte} [CALL[=1..65535]TUNnel[=1..65535]] [TIMEOut=1..300]

Parameter	Description
DEBug	The debugging options to enable on the specified call or tunnel, or on
	all currently active calls and tunnels.
	Default: no default
	DECode	Decode debugging is enabled (Figure 23 on
		page 85, Table 21 on page 86). This decodes control
		and payload messages into a human-readable
		format. For control packets, all of the message is
		decoded. For payload packets, only the header is
		decoded. The first 64 bytes of the encapsulated
		frame is also displayed, but remains in hexadecimal
		format.
TIMEOut	The length of time, in seconds, for which debug information is
	produced. After this time, all debugging modes are automatically
	disabled.

Default: no time limit set (debugging continues until turned off using the disable l2tp debug command)

Figure 23: Example output from the enable l2tp debug=decode command

18:07:20 L2TP DECODE: Rx [TID:0 CID:0 from 192.168.1.1:1701]

Header:
Version:	2	Type: Control			Flags: T,L,S Length: 107
Tunnel ID: 0			Session ID:		0
Sequence	Numbers: Ns 0 Nr 0
Attribute Value Pairs				(AVPs):
Message Type (0)
Flags: M			Len:	8	Value: SCCRQ
Protocol	Version (2)
Flags: M			Len:	8	Value: 1.0
Host Name (7)
Flags: M			Len:	12	Value: L2TP A
Framing Capabilities (3)
Flags: M			Len:	10	Value: Async Sync
Assigned	Tunnel ID (9)
Flags: M			Len:	8	Value: 36082
Bearer Capabilities				(4)
Flags: M			Len:	10	Value: Analog Digital
Tie Breaker (5)
Flags: -			Len:	14
Value: 761cbc695895ce13
Firmware Revision (6)
Flags: -			Len:	8	Value: 0207
Vendor Name (8)
Flags: -			Len:	9	Value: ATI
Receive Window			Size	(10)
Flags: M			Len:	8	Value: 4

18:07:20 L2TP DECODE: Tx [TID:1618 CID:3612 to 192.168.1.1:1701] Header:

Version: 2 Type: Payload Flags: L,P Length: 34

Tunnel ID: 36082 Session ID: 21368 Payload:

ff03c021 01040016 01040678 0408c025 00001770 05061537 023c

Software Version 2.8.1 C613-10477-00 REV B