Debug Isdp; Debug Lacp - Dell PowerEdge M420 Reference Manual

Example
console#debug ipv6 pimsm packet

debug isdp

Use the debug isdp command to trace ISDP packet reception and
transmission. The receive option traces only received ISDP packets and the
transmit option traces only transmitted ISDP packets. When neither keyword
is used in the command, then all ISDP 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 ISDP tracing.
Syntax
debug isdp packet [ receive | transmit ]
no debug isdp packet [ receive | transmit ]
Default Configuration
Display of ISDP traces is disabled by default.
Command Mode
Privileged EXEC mode.
Usage Guidelines
There are no usage guidelines for this command.
Example
console#debug isdp packet

debug lacp

Use the debug lacp command to enable tracing of LACP packets received and
transmitted by the switch. Use the "no" form of this command to disable
tracing of LACP packets.
1453
Serviceability Tracing Packet Commands