This article helps to explain how to check for test agent down issue.

Test Agent is showing offline in PAA GUI.

Validation:

• Check if Test Agent is Online and able to access the Test Agent server.
• Check for port 6000 and 6800 connectivity from Control Center(CC) CLI-
  • netstat -anelp | grep :6000
    • This will show the Test Agent Appliance connectivity to CC.
  • netstat -anelp | grep :6800
    • This will show the Test Agent Application connectivity to CC.

• Check for ping and traceroute from CC CLI to Test Agent IP Addr.
• Check for packet capture if required

Solution -

• If connectivity is all good, then perform a service restart to clear any connection cache/stale issue-
  • ncc services status
  • ncc services restart

If still issue is seen contact JTAC Support