Troubleshooting VPN Problems in VMware Cloud on AWS

VPN problems can include authentication errors (IKE phase 1 and phase 2) and connectivity ("Peer not responding") issues.

When an IPsec VPN session or tunnel is down, an NSX 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. See Alarms When an IPsec VPN Session or Tunnel Is Down in the NSX Administration Guide.