Manual

Layer 2 Tunnel Protocol Version 3
show l2tun tunnel
139
Cisco IOS Releases 12.0(29)S and 12.2(25)S
Usage Guidelines When you use the show l2tun tunnel command to display information about configured L2TP sessions
on the router, you can filter the output as follows:
• To filter the output to include only L2TP sessions set up using the local tunnel ID, enter id identifier
in the command.
• To filter the output to include only the L2TP session that matches the specified local IP name and
remote name, enter either local-name local-name remote-name or remote-name remote-name
local-name in the command.
Examples The following example shows how to display detailed information about all currently configured L2TP
sessions:
Router# show l2tun tunnel all
Session Information Total tunnels 1 sessions 1
Tunnel Information Total tunnels 1 sessions 1
Tunnel id 26515 is up, remote id is 41814, 1 active sessions
Tunnel state is established, time since change 03:11:50
Tunnel transport is IP (115)
Remote tunnel name is tun1
Internet Address 172.18.184.142, port 0
Local tunnel name is Router
Internet Address 172.18.184.116, port 0
Tunnel domain is
VPDN group for tunnel is
0 packets sent, 0 received
0 bytes sent, 0 received
Control Ns 11507, Nr 11506
Local RWS 2048 (default), Remote RWS 800
Tunnel PMTU checking disabled
Retransmission time 1, max 1 seconds
Unsent queuesize 0, max 0
Resend queuesize 1, max 1
Total resends 0, ZLB ACKs sent 11505
Current nosession queue check 0 of 5
Retransmit time distribution: 0 0 0 0 0 0 0 0 0
Sessions disconnected due to lack of resources 0
Table 11 describes the significant fields shown in the display.
Table 11 show l2tun tunnel all Field Descriptions
Field Description
Total tunnels The total number of L2TP tunnels currently established on the router.
sessions The number of L2TP sessions currently established on the router.
tunnel id The tunnel ID and tunnel status.
remote id The remote ID.
active sessions Number of active sessions.
Tunnel state is The state of the tunnel.
time since change Time since the tunnel state last changed, in the format hh:mm:ss.
Tunnel transport is Tunnel transport protocol.