3Com Router Command Reference Guide — V1.00ViewAll viewsParameterall: Enable all debug switches.alert: Enable alert debug switch.mrt: Enable debug switches related to multicast route table .recv all: Enable debug switches for receiving all types of protocol packets.recv assert: Enable debug switch for receiving assert packet.recv graft: Enable debug switch of receiving graft packet.recv graft-ack: Enable debug switch for receiving graft acknowledgementpacket.recv join: Enable debug switch for receiving join coverage packet.recv prune: Enable debug switch for receiving prune packet.send all: Enable debug switch for sending all types of protocol packets.send assert: Enable debug switch for sending assert packet.send graft: Enable debug switch for sending graft packetsend graft-ack: Enable debug switch for sending graft acknowledgement packetsend join: Enable debug switch for sending join coverage packet.send prune: Enable debug switch for sending prune packet.timer: Enable the debug packet switch of the timerwarning: Enable debug switch for general warning packetDescriptionUsing the debugging pim dm command, you can enable PIM-DM debug packetswitch. Using the undo debugging pim dm command, you can disable PIM-DMdebug packet switch.By default, the system turns off PIM-DM debug packet switchExampleNone2.1.7 debugging pim smSyntaxdebugging pim sm { all | mbr | mrt | timer | warning | { recv | send } { assert |bootstarp | crpadv | jp | reg | regstop } }14