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CLI-based Configuration Guide - VPN

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document describes VPN features on the device and provides configuration procedures and configuration examples.
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Monitoring the L2TPv3 Tunnel Running Status

Monitoring the L2TPv3 Tunnel Running Status


To check whether an L2TPv3 tunnel is running properly, view the status of AC and tunnel interfaces.

After an AC interface is bound to a tunnel interface using the link-bridge command, the status of the AC and tunnel interfaces are associated. The association between the AC and tunnel interfaces are as follows:
  1. If the physical status of the AC and tunnel interfaces is UP and the protocol status is UP (Spoofing), the status of the tunnel is UP.
  2. If the physical status of the tunnel interface is Standby (^down), the physical status of the AC interface is down or *down.

    Cause: No network cable is installed or the AC interface has been shut down.

  3. If the physical status of the AC interface is Standby (^down), the protocol status of a tunnel is down.

    Cause: Parameters of the tunnel are incomplete, the route is not reachable, no license is uploaded, or the tunnel has been shut down.


If parameters are changed, a tunnel is deleted. If the new configuration is correct, a tunnel will be established again.


  • Run the display interface tunnel [ interface-number ] command to view the running status of the tunnel interface.
  • Run the display interface brief [ main ] command to view the brief interface status and configuration information.
Updated: 2019-08-07

Document ID: EDOC1100033725

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