display l2tp tunnel
Function
The display l2tp tunnel command displays information about L2TP tunnels that have been established.
The display l2tp tunnel-limit command displays the maximum number of L2TP tunnels that can be established and the number of already used L2TP tunnels on the device that functions as the LNS.
This command is supported only on the NetEngine 8000 F1A.
Parameters
| Parameter | Description | Value |
|---|---|---|
| lac |
Displays the L2TP session information of the LAC. |
- |
| lns |
Displays the L2TP session information of the LNS. |
- |
| slot slot-id |
Displays L2TP tunnel information on a tunnel board in a specified slot. |
The value is a string of 1 to 15 case-sensitive characters, spaces not supported. |
| tunnel-item tunnel-id |
Displays information about the L2TP tunnel with a specified tunnel ID. |
The value is an integer ranging from 1 to 65535. |
| tunnel-name remote-name |
Displays information about the L2TP tunnel with a specified remote name. |
The value is a string of 1 to 253 characters. |
| remote-address ip-address |
Specifies a remote IP address based on which the L2TP tunnel information is to be displayed. |
The value is in dotted decimal format. |
| l2tp-group group-name |
Specifies an L2TP group based on which the L2TP tunnel information is to be displayed. |
The value is a string of 1 to 32 characters. |
| block |
Displays information about a locked L2TP tunnel. |
- |
Usage Guidelines
Usage Scenario
To check the number of L2TP tunnels that have been established and information about the tunnels, such as the remote IP address, tunnel name, and UDP port number and the number of sessions established over the tunnels, run the display l2tp tunnel command.
The display l2tp tunnel-limit command displays the maximum number of L2TP tunnels that can be established and the number of already used L2TP tunnels.Precautions
In VS mode, this command is supported only by the admin VS.In the lns-group view, the bind slot command allocates 24 tunnels for a board. If the l2tp tunnel-limit command is run to reclaim resources of pre-allocated tunnels, the display l2tp tunnel limit command does not display the statistics of pre-allocated tunnels. After the undo l2tp tunnel-limit command is run, tunnels will be pre-allocated again.
Example
The actual command output varies according to the device. The command output here is only an example.
<HUAWEI> system-view [~HUAWEI] display l2tp tunnel ------------------------------------------------------------- -----------tunnel information in LAC----------------------- LocalTID RemoteTID RemoteAddress Port Sessions RemoteName ------------------------------------------------------------------------------ 3 2 10.3.3.1 1701 1 lac1 ------------------------------------------------------------------------------ Total 0,printed 0 ---------------------------------------------------------- -----------tunnel information in LNS---------------------- The tunnel information of k board 1 LocalTID RemoteTID RemoteAddress Port Sessions RemoteName Total 0, 0 printed from slot 1
<HUAWEI> system-view [~HUAWEI] display l2tp tunnel lac block ----------------------------------------------------------------------------- LocalTID RemoteTID RemoteAddress Port Sessions RemoteName L2TPTunnelStartTime group-name ------------------------------------------------------------------------------ 3 2 10.40.40.1 1701 1 test 2011-12-15?17:00:48(Continuance:0 days 00 hours 04 mins) huawei ------------------------------------------------------------------------------ Total 0, printed 0
<HUAWEI> system-view [~HUAWEI] display l2tp tunnel-limit Info: This syntax is applicable only to LNS. tunnel-limit = 49152 used-tunnel = 6886
<HUAWEI> system-view [~HUAWEI] display l2tp tunnel tunnel-item 2 ---------------------------------------------------------- -----------tunnel information in LAC---------------------- ---------------------------------------------------------- Tunnel id :2 Remote Tunnel id :3 Tunnel State :Up Remote tunnel name :hhw1 Remote Address :10.50.50.1 port : 1701 ReCall Address :0.0.0.0 Local tunnel name :hhw Local Address :10.40.40.1 port : 1701 active sessions :1 tunnel per user :0 Session Limit :65535 Radius Session Limit:4294967295 Control Ns :6 Control Nr :4 VRFfromRDS :0 VRF :0 Retransmission :5 Timeout :2 Hello Interval :60 Local RWS :4 Remote RWS :1024 OuterDscp :0xff TunnelAssignmentID :4 L2TPTunnelStartTime :2011-12-15 19:59:59(Continuance:0 days 00 hours 02 mins) ---------------------------------------------------------- ---------------------------------------------------------- -----------tunnel information in LNS---------------------- The tunnel information of board 2 tunnel 2 does not exist
| Item | Description |
|---|---|
| tunnel per user | Whether per tunnel per user is used. |
| LocalTID | Local tunnel ID. |
| RemoteTID | Remote tunnel ID. |
| Port | Remote port number. |
| Sessions | Number of sessions. |
| RemoteName | Remote tunnel name. |
| L2TPTunnelStartTime | Start time when the L2TP tunnel is established. |
| group-name | Name of an L2TP group. |
| tunnel-limit | Maximum number of L2TP tunnels that can be established. |
| used-tunnel | Number of L2TP tunnels that have been established. |
| Tunnel id | Local tunnel ID. |
| Tunnel State | Tunnel status. |
| Remote Tunnel id | Remote tunnel ID. |
| Remote tunnel name | Remote tunnel name. |
| Remote Address | Peer IP address. This IP address is the LNS IP address configured using the start l2tp command in the L2TP group view or delivered by the RADIUS server. |
| Remote RWS | Size of the remote receive buffer. |
| State | Tunnel status. |
| ReCall Address | Socket IP address. |
| Local tunnel name | Local tunnel name. |
| Local Address | Local IP address. |
| Local RWS | Size of the local receive buffer. |
| active sessions | Number of sessions established over the tunnel. |
| Session Limit | Maximum number of sessions that can be established over the tunnel. |
| Radius Session Limit | Maximum number of sessions that can be delivered by the RADIUS server. |
| Control Ns | Sequence number of packets sent over a control connection. |
| Control Nr | Sequence number of packets received over a control connection. |
| VRFfromRDS | Number of VRFs delivered by the RADIUS server. |
| VRF | Number of VRFs locally configured. |
| Retransmission | Number of times that L2TP packets are retransmitted due to timeout. |
| Timeout | Interval at which L2TP packets are retransmitted due to timeout, in seconds. |
| Hello Interval | Interval at which Hello packets are sent, in seconds. |
| OuterDscp | DSCP value in the outer VLAN tag of L2TP control packets. The value is specified using the set-dscp-outer command. If this value is not specified, the default value 0xFF is displayed. |
| TunnelAssignmentID | Assigned tunnel ID. |
| Info | Information. |
| PeerIP | Peer·IP·address. |
| SourceIP | Local·IP·address. |
| DelayAckTimer | Delay·acknowledgment·timer·for·the·tunnel. |
| IdleCutTimer | Idle-cut·timer·for·the·tunnel. |
| HelloTimer | Hello·timer·for·the·tunnel. |
| CtlAckTimeouts | Number·of·acknowledgment·timeouts. |
| CtlOutOfSeq | Number·of·packets·discarded·because·Ns·is·greater·than·Nr. |
| CtlOutOfWnd | Number·of·packets·discarded·because·Ns·is·less·than·Nr. |
| RecvPackets | Number·of·packets·received. |
| RecvZLB | Number·of·ZLB·packets·received. |
| SendFail | Number·of·packets·that·fail·to·be·sent. |
| SendPackets | Number·of·packets·sent. |
| SendZLB | Number·of·ZLB·packets·sent. |
| RecvHello | Number·of·Hello·packets·received. |
| SendHello | Number·of·Hello·packets·sent. |
| RemoteProtoVer | Remote·protocol·version. |
| Authentication | Whether·CHAP·is·used·at·the·remote·end. |
| RemoteVendorName | Remote·tunnel·vendor·name. |
| SendWinLowerward | Lower·limit·of·the·send·window. |
| RecvWinLowerward | Lower·limit·of·the·receive·window. |
| RecvWinSize | Size·of·the·receive·window. |
| PeerFramingCap | Synchronous/asynchronous·frame·processing·capability. |