Edge tunnels down alarm

Products

• VMware NSX

Issue/Introduction

Title: Edge tunnels down
Event ID: infrastructure_communication.edge_tunnels_down

Alarm Description:

• Purpose:
  To inform user we have all tunnels down event. All tunnels down event could be caused by underlay network infra or BFD did not get processed.
  
  
• Impact:
   All tunnels down will bring down the edge node until one of tunnels come back up. Please check syslog containing "VTEP tunnels down" and look for any logs/events which triggers all tunnels down.  
   The edge-to-host tunnels must be in place, and all of them need to be in down state in order to trigger the alarm.

Environment

VMware NSX

Resolution

For 3.0.0 and higher

Recommendation Action:
Invoke the NSX CLI command `get tunnel-ports` to get all tunnel ports, then check each tunnel’s stats by invoking NSX CLI command `get tunnel-port <UUID> stats` to check if there are any drops. Also check /var/log/syslog if there are tunnel related errors.

Maintenance window required for remediation? 
Yes