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Staff
February 16, 2026

Troubleshooting Tip: Collecting debug logs from FortiFone using its CLI

  • February 16, 2026
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Description This article describes how to collect debug logs from the CLI of a FortiFone-x80 device in order to perform further analysis for troubleshooting.
Scope

FortiFone-x80 (v3.0.x | v7.0.x | v7.2.x).

Solution
  1. Be sure to reach the subnet of FortiFone-x80 and connect to the IP-Address of the FortiFone device using SSH (TCP/22 by default).
  2. Log in using the default User and Password: admin/23646.
  3. Enable the verbosity of the CLI-debug level. By default, the level is 3.

 

FF380B # diagnose debug cli
System Time: 2026-02-09 16:04:14 COT (Uptime: 0d 0h 23m)
Cli debug level is 3

 

FF380B # diagnose debug cli ?
<Integer> debug level (0-8).

 

For troubleshooting purposes, use 'level=8'.

  1. The next applications are able to be choose for debugging:

     

 

FF380B # diagnose debug application
btagent          display btagent log
clivoipdtest     display clivoipdtest log
cmdb_event       display log for cmdb event
cronserviced     display cronserviced log
dhcpcd           display dhcpcd log
fconfd           display fconfd log
lighttpd         display lighttpd log
mcastd           display mcastd log
phoned           display phoned log
voipd            display voipd log
vpnmond          display vpnmond log

 

  1. After, enable the debugging:

 

FF380B # diagnose debug enable

 

For further technical assistance, share the debug-output collected with Fortinet's support team. See FortiCare Technical Support.