Action -> Operations -> Remote Command (Type IPMI)
Command: power reset
It looks like power on command is not being passed correctly

Configure and run an error is logged to the following
log: /var/log/zabbix/zabbix_server.log

24797:20121203:112357.505 In substitute_simple_macros() data:'reset on'
24797:20121203:112357.505 In zbx_execute_script()
24797:20121203:112357.505 In zbx_execute_ipmi_command()
24797:20121203:112357.505 In substitute_simple_macros() data:'623'
24797:20121203:112357.505 In parse_ipmi_command() command:'reset on'
24797:20121203:112357.505 End of parse_ipmi_command():SUCCEED
24797:20121203:112357.505 In set_ipmi_control_value(control:reset, value:1)
24797:20121203:112357.505 In init_ipmi_host() host:'[192.168.113.250]:623'
24797:20121203:112357.505 In get_ipmi_host() host:'[192.168.113.250]:623'
24797:20121203:112357.505 End of get_ipmi_host():0xf94720
24797:20121203:112357.505 End of init_ipmi_host():0xf94720
24797:20121203:112357.505 In get_ipmi_control_by_name() reset@[192.168.113.250]:623
24797:20121203:112357.505 End of get_ipmi_control_by_name():(nil)
24797:20121203:112357.505 control reset@[192.168.113.250]:623 does not exist ?
24797:20121203:112357.505 End of zbx_execute_ipmi_command():FAIL
24797:20121203:112357.505 End of zbx_execute_script():FAIL
24797:20121203:112357.505 In add_command_alert()
24797:20121203:112357.505 In DCget_nextid() table:'alerts' num:1
24797:20121203:112357.505 End of DCget_nextid() table:'alerts' [30:30]
24797:20121203:112357.505 query [txnlev:1] [insert into alerts (alertid,actionid,eventid,clock,message,status,error,alerttype,esc_step) values (30,4,243,1354
501437,'admin1:reset on',2,'control reset@[192.168.113.250]:623 does not exist',1,1)]
24797:20121203:112357.505 End of add_command_alert()
24797:20121203:112357.505 End of execute_commands()
24797:20121203:112357.505 End of execute_operations()
24797:20121203:112357.505 End of execute_escalation()
24797:20121203:112357.505 query [txnlev:1] [update escalations set status=0,esc_step=1,nextcheck=1354505037 where escalationid=3;