Manual

Layer 2 Tunnel Protocol Version 3
show l2tun session
136
Cisco IOS Releases 12.0(29)S and 12.2(25)S
Remote session id is 18819, remote tunnel id 37340
Set DF bit to 0
Session cookie information:
local cookie, size 4 bytes, value CF DC 5B F3
remote cookie, size 4 bytes, value FE 33 56 C4
SSS switching enabled
Sequencing is on
Ns 9932, Nr 10001, 0 out of order packets discarded
Table 9 describes the significant fields shown in the display.
Table 9 show l2tun session 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.
Session id The session ID for established sessions.
tunnel id The tunnel ID for established tunnels.
Call serial number The call serial number.
Remote tunnel name
is
Name of the remote tunnel.
Internet address is IP address of the remote tunnel.
Session is Signaling type for the session.
Session state is Session state for the session.
time since change Time since the session state last changed, in the format hh:mm:ss.
Packets sent, received Number of packets sent and received since the session was established.
Bytes sent, received Number of bytes sent and received since the session was established.
Receive packets
dropped
Number of received packets that were dropped since the session was
established.
Send packets dropped Number of sent packets that were dropped since the session was established.
Session vcid is Session virtual circuit identifier (VCID).
Session Layer 2
circuit
Type and name of the session Layer 2 circuit.
Circuit state is Status of the circuit.
Remote session id is Session ID for the remote session.
remote tunnel id Tunnel ID for the remote tunnel.
DF bit Status of the Don’t Fragment (DF) bit option. The DF bit can be on or off.
ToS reflect Status of the type of service (ToS) reflect option. ToS reflection can be
enabled or disabled.
ToS value Value of the ToS byte in the L2TPv3 header.
TTL value Value of the time to live (TTL) byte in the L2TPv3 header.
local cookie Size and value of the local cookie.
remote cookie Size and value of the remote cookie.
SSS switching Status of Subscriber Service Switch (SSS) switching. SSS switching can be
enabled or disabled.