Tracing a route with the trace-l2 command

F4# trace-l2 ?
Possible completions:
  show   show L2 topology
  vlan   trace VLAN
F4# trace-l2 vlan ?
Possible completions:
  1-4090vlan number
F4# trace-l2 vlan 1 ?
Possible completions:
  A.B.C.Ddestination IP address         
  ASCII string destination host name    
  HHHH.HHHH.HHHHdestination MAC address  
  |                                       
  <cr>