CLI Reference Guide

1586 Serviceability Tracing Packet Commands
Command Mode
Privileged EXEC mode.
User Guidelines
There are no user guidelines for this command.
Example
console#debug sflow packet
debug spanning-tree
Use the debug spanning-tree command to trace spanning tree BPDU packet
reception and transmission. The receive option traces only received spanning
tree BPDUs and the transmit option traces only transmitted BPDUs. When
neither keyword is used in the command, all spanning tree BPDU 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 tracing of spanning tree BPDUs.
Syntax
debug spanning-tree bpdu [ receive | transmit ]
no debug spanning-tree bpdu [ receive | transmit ]
Default Configuration
Display of spanning tree BPDU traces is disabled by default.
Command Mode
Privileged EXEC mode.
User Guidelines
There are no user guidelines for this command.
Example
console#debug spanning-tree bpdu
2CSNXXX_SWUM200.book Page 1586 Tuesday, December 10, 2013 1:22 PM