996 Serviceability Tracing Packet Commands
dumped. Vital information such as source address, destination address, control packet type, 
packet length, and the interface on which the packet is received or transmitted is displayed on 
the console.
Syntax
debug ip dvmrp packet [ receive | transmit ]
no debug ip dvmrp packet [ receive | transmit ]
Default Configuration
Display of DVMRP traces is disabled by default.
Command Mode
Privileged EXEC mode.
User Guidelines
There are no usage guidelines for this command.
Example
console#debug ip  dvmrp packet
debug ip igmp
Use the debug ip igmp command to trace IGMP packet reception and transmission. The 
receive option traces only received IGMP packets and the transmit option traces only 
transmitted IGMP packets. When neither keyword is used in the command, then all IGMP 
packet traces are dumped. Vital information such as source address, destination address, control 
packet type, packet length, and the interface on which the packet is received or transmitted is 
displayed on the console. Use the “no” form of this command to disable IGMP traces.
Syntax
debug ip igmp packet [ receive | transmit ]
no debug ip igmp packet [ receive | transmit ]
Default Configuration
Display of IGMP traces is disabled by default.
Command Mode
Privileged EXEC mode.