This section provides information to help you resolve problems you might encounter while using the VPN features in NSX. What to read next Monitor and Troubleshoot VPN SessionsAfter you configure an IPSec or L2 VPN session, you can monitor the VPN tunnel status and troubleshoot any reported tunnel issues using the NSX Manager user interface. Alarms When an IPsec VPN Session or Tunnel Is DownWhen an IPsec VPN session or tunnel is down, an alarm is raised and the reason for the Down alarm is displayed on the Alarms dashboard or the VPN page on the NSX Manager user interface. Parent topic: Virtual Private Network (VPN)