Chapter 17 Traffic Shaping for FortiOS 5.0 : Troubleshooting traffic shaping
  
Troubleshooting traffic shaping
This chapter outlines some troubleshooting tips and steps to diagnose the shapers and whether they are working correctly. These diagnose commands include:
diagnose system tos-based-priority
diagnose firewall shaper traffic-shaper
diagnose firewall per-ip-shaper
diagnose debug flow
See also 
Interface diagnosis
Shaper diagnose commands
Packet loss with statistics on shapers
Packet lost with the debug flow
Session list details with dual traffic shaper
Additional Information