Technical Documentation
New
Monitoring Detailed Configuration Information about Specified Tunnels
Purpose
Display detailed configuration information about specified tunnels.
Action
To display detailed configuration information about specified tunnel by ip address:
host1#show l2tp tunnel virtual router default ip 172.31.1.98 L2TP tunnel 1/xyz is Up with 13 active sessions
L2TP tunnel 1/aol.com is Up with 13 active sessions
L2TP tunnel 1/isp.com is Up with 13 active sessions
L2TP tunnel 1/msn.com is Up with 13 active sessions
L2TP tunnel 1/mv.com is Up with 12 active sessions
5 L2TP tunnels found
To display detailed configuration information about specified tunnel:
host1#show l2tp tunnel detail 1/xyz
L2TP tunnel 1/xyz is Up with 13 active sessions
Configuration
Administrative state is enabled
SNMP traps are enabled
Tunnel address
Transport ipUdp
Virtual router default
Local address 192.168.1.230, peer address 172.31.1.98
Local UDP port 1701, peer UDP port: 1701 Tunnel status
Effective administrative state is enabled
State is established
Local tunnel id is 14529, peer tunnel id is 34
Host profile is none
Tunnel is Up for: 12 days, 8 hours, 24 minutes, 23 seconds
Sub-interfaces total active failed
Sessions 13 13 0
Statistics packets octets discards errors
Control rx 14 683 0 0
Control tx 41 4666 0 0
Data rx 67900944 67900944 0 0
Data tx 67900944 67900944 0 0
Control channel statistics
Receive window size = 4
Receive ZLB = 17
Receive out-of-sequence = 0
Receive out-of-window = 0
Transmit window size = 4
Transmit ZLB = 12
Transmit queue depth = 0
Retransmissions = 8 Tunnel operational configuration
Peer host name is 'Juniper-POS'
Peer vendor name is 'XYZ, Inc.'
Peer protocol version is 1.1
Peer firmware revision is 0x1120
Peer bearer capabilities are digital and analog
Peer framing capabilities are sync and async
Meaning
Table 1 lists the show l2tp tunnel command output fields.
Table 1: show l2tp tunnel Output Fields
Field Name | Field Description |
|---|---|
Configuration | Configured status of the tunnel enabled. |
Administrative state | Administrative status of the enabled tunnel:
|
SNMP traps | Whether or not the router sends traps to SNMP for operational state changes. |
Tunnel address | Tunnel address information. |
Transport | Method used to transfer traffic. |
Virtual router | Name of the virtual router on which the tunnel is configured. |
Local and peer addresses | IP addresses of the local and remote ends of the tunnel. If the router is set up to ignore address and port changes in SCCRP packets, both the transmit and receive addresses are listed for the peer. |
Local and peer UDP ports | UDP ports for the local and remote ends of the tunnel. If the router is set up to accept address and port changes in SCCRP packets, both the transmit and receive UDP ports are listed for the peer. |
Tunnel status | Tunnel status information. |
Effective administrative state | Most restrictive of the following administrative states: E Series router, destination, and tunnel. This setting, rather than the administrative state of the tunnel, determines whether the router can create new sessions on a tunnel or whether the sessions on a tunnel are disabled or not. |
State | Status of the enabled tunnel:
|
Local and peer tunnel id | Names the router used to identify the tunnel locally and remotely. |
Host profile | Name of the L2TP host profile, if it is configured. Otherwise, the label “none” is displayed to specify that a host profile is not enabled. |
Tunnel is Up for | Duration for which the tunnel is operationally up, which is denoted in terms of days, hours, minutes, and seconds. |
Sub-interfaces: | Sub-interface information for the enabled tunnel:
|
Statistics | Information about the traffic sent and received. |
Control channel statistics | Tunnel control channel information. |
Receive window size | Number of packets that the peer can transmit without receiving an acknowledgment from the router. |
Receive ZLB | Number of acknowledgments that the router has received from the peer. |
Receive out-of-sequence | Number of received control packets that were out of order. |
Receive out-of-window | Number of packets that arrived at the router outside the receiving window. |
Transmit window size | Number of packets that the router can transmit before receiving an acknowledgment from the peer. |
Transmit ZLB | Number of acknowledgments that the router has sent to the peer. |
Transmit queue depth | Number of packets that the router is waiting to send to the peer, plus the number of packets for which the peer has not yet acknowledged receipt. |
Tunnel operation configuration | Information received from the peer when the tunnel was created. |
