Monitoring L2TP Dial-Out
This section presents the commands used to display L2TP dial-out configuration, status, and statistics.
The show commands display aspects of the dial-out state machine and details about the dial-out routes themselves. This section presents sample output. The actual output on your router may differ significantly. For detailed information about states, see Dial-Out Operational States.
You can use several keywords to tailor the output of the show l2tp dial-out commands:
- summary—Displays aggregate counts for the subject of the command in each of the possible operational and administrative states.
- detail—Displays configuration, state, and statistics.
- state—Limits the output to subjects of the command in the specified operational or administrative state.
- allVirtualRouters—Displays dial-out information across all virtual routers.
show l2tp dial-out
- Use to display the chassis-wide configuration, operational state, and statistics for L2TP dial-out.
- Field descriptions
- Operational status—Current operational status of the chassis
- Connecting timer value—Configuration of the connecting timeout
- Dormant timer value—Configuration of the dormant timeout
- Dial-out Chassis Statistics—Statistics at the chassis level
- Current sessions—Total number of session currently active on the chassis
- Maximum sessions—Highest value of current sessions recorded on the chassis since the last router restart
- Current sessions in the process of connecting—Sessions currently in the connecting state
- Maximum sessions connecting at one time—Highest number of sessions recorded on the chassis at the same time since the last router restart
- Current sessions pending—Sessions in the pending state
- Maximum sessions pending—Highest number of sessions recorded in the pending state since the last router restart
- Current targets inhibited—Targets currently in the inhibited state
- Maximum targets inhibited—Highest value of targets recorded in the inhibited state since the last router restart
- Authentication grant for nonexistent session—Number of authentication requests granted to nonexistent sessions
- Authentication deny for nonexistent session—Number of authentication requests denied to nonexistent sessions
- Virtual routers active—VRs in use by the state machine
- Virtual routers created—VRs that have been used by the state machine
- Virtual routers removed—VRs no longer used by the state machine
- Virtual routers in init-pending state—VRs in the initializationPending state
- Virtual routers in init-failed state—VRs in the initializationFailed state
- Virtual routers in down state—VRs in the down state
- Virtual routers in in-service state—VRs in the inService state
- IP Discarded trigger frames—Trigger frames that IP discarded
- Trigger frames received for unknown route—Trigger frames received for an unknown route
- Sessions in dormant state—Sessions on the VR that are in the dormant state
- Sessions in pending state—Sessions on the VR that are in the pending state
- Sessions in authenticating state—Sessions on the VR that are in the authenticating state
- Sessions in connecting state—Sessions on the VR that are in the connecting state
- Sessions in in-service state—Sessions on the VR that are in the inService state
- Sessions in inhibited state—Sessions on the VR that are in the inhibited state
- Sessions in post-inhibited state—Sessions on the VR that are in the postInhibited state
- Sessions in failed state—Sessions on the VR that are in the failed state
- Targets active—Current active targets
- Targets created—All targets created
- Targets removed—Targets deleted
- Targets in down state—Targets in the down state
- Targets in inhibited state—Targets in the inhibited state
- Targets in in-service state—Targets in the inService state
- Triggers discarded—Trigger packets discarded
- Sessions active—Currently active sessions
- Sessions created—All sessions created
- Sessions removed—Sessions deleted
- Sessions reset—Sessions reset using the l2tp dial-out session reset command
- Triggers received—Triggers received for dial-out sessions
- Triggers enqueued—Triggers that have been put into the queue
- Triggers discarded—Trigger packets discarded
- Triggers forwarded—Trigger packets forwarded
- Triggers max enqueued—Maximum number of triggers that have been enqueued simultaneously since the last router reset
- Authentication requests—Authentication requests received
- No resources for authentication—Authentication requests not processed because of insufficient resources
- Authentication grants—Authentication requests granted
- Authentication Denies—Authentication requests denied
- Dial-outs requested—Outgoing calls requested for sessions
- Dial-outs rejected—Outgoing call requests that were rejected
- Dial-outs established—Successful outgoing calls before the connecting timer expired
- Dial-outs timed out—Number of times the connecting timer expired
- Dial-outs torn down—Successful outgoing calls that were terminated
host1#show l2tp dial-out
Operational status: inService
Connecting timer value: 30 seconds
Dormant timer value: 300 seconds
host1#show l2tp dial-out detail
Dial-out Chassis Configuration and Operational Status
Chassis operational status : inService
Dormant timeout : 30 seconds
Connecting timeout : 30 seconds
Dial-out Chassis Statistics
Current sessions: 0
Maximum sessions: 0
Current sessions in the process of connecting: 0
Maximum sessions connecting at one time: 0
Current sessions pending: 0
Maximum sessions pending: 0
Current targets inhibited: 0
Maximum targets inhibited: 0
Authentication grant for nonexistent session: 0
Authentication deny for nonexistent session: 0
Dial-out Virtual router statistics
Virtual routers active: 0
Virtual routers created: 0
Virtual routers removed: 0
Virtual routers in init-pending state: 0
Virtual routers in init-failed state: 0
Virtual routers in down state: 0
Virtual routers in in-service state: 0
IP Discarded trigger frames: 0
Trigger frames received for unknown route: 0
Sessions in dormant state: 0
Sessions in pending state: 0
Sessions in authenticating state: 0
Sessions in connecting state: 0
Sessions in in-service state: 0
Sessions in inhibited state: 0
Sessions in post-inhibited state: 0
Sessions in failed state: 0
Dial-out target statistics
Targets active: 0
Targets created: 0
Targets removed: 0
Targets in down state: 0
Targets in inhibited state: 0
Targets in in-service state: 0
Triggers discarded: 0
Dial-out session statistics
Sessions active: 0
Sessions created: 0
Sessions removed: 0
Sessions reset: 0
Triggers received: 0
Triggers enqueued: 0
Triggers discarded: 0
Triggers forwarded: 0
Triggers max enqueued: 0
Authentication requests: 0
No resources for authentication: 0
Authentication grants: 0
Authentication Denies: 0
Dial-outs requested: 0
Dial-outs rejected: 0
Dial-outs established: 0
Dial-outs timed out: 0
Dial-outs torn down: 0
host1#show l2tp dial-out summary
Virtual routers in init pending state : 0
Virtual routers in init failed state : 0
Virtual routers in down state : 0
Virtual routers in inService state : 0
Targets in down state : 0
Targets in inhibited state : 0
Targets in inService state : 0
Sessions in dormant state : 0
Sessions in pending state : 0
Sessions in authenticating state : 0
Sessions in connecting state : 0
Sessions in inService state : 0
Sessions in inhibited state : 0
Sessions in postInhibited state : 0
Sessions in failed state : 0
show l2tp dial-out session
- Use to display the status of dial-out sessions.
- If you do not include any options, the command displays all sessions within the current virtual router context.
- To limit the display to detailed information about a particular session, enter the trigger IP address for the session.
- Field descriptions
- Session—IP address of the session
- Status—Current status of the session
- Operational status—Current operational status of session
host1#show l2tp dial-out session
Session Status
--------- ---------
10.10.1.1 connected
10.10.2.1 dormant
host1#show l2tp dial-out session 10.1.1.1
Session 10.1.1.1
Operational status: dormant
show l2tp dial-out target
- Use to display configured dial-out targets within the current virtual router context.
- If you do not include any options, the command displays general information for all targets within the virtual router.
- To limit the display to detailed information about a target, enter the target IP address and mask.
- Field descriptions
- Target—Address of the target
- Status—Status of the connection to the target
- Active Sessions—Currently active session to the target
- Total triggers—Trigger packets received for the target
- Failed sessions—Sessions that are currently in the failed state
- Connected sessions—Sessions that are currently in the connected state
host1:dialout#show l2tp dial-out target
Target Status Active Sessions
------ ------ --------------
10.10.1.1/16 up 14
10.1.1.0/24 up 10
host1:dialout#show l2tp dial-out target 10.1.1.0/24
Target 10.1.1.0/24
Operational status: up
Active sessions: 10
Total triggers: 127
Failed sessions: 2
Connected sessions: 8
show l2tp dial-out virtual-router
- Use to display dial-out state machine operational status and statistics within the current VR context.
- Field descriptions
- Virtual router—Name of VR
- Virtual router operational status—Operational status of the VR
- Maximum trigger buffers per session—Maximum number of trigger packets held in buffer while the dial-out session is being established
host1#show l2tp dial-out virtual-router
Dial-out Virtual Router Configuration and Operational Status
Virtual router host1:
Virtual router operational status: inService
Maximum trigger buffers per session: 0
