Debug Spanning-Tree Bpdu - Cisco Catalyst 3120 Command Reference Manual

Appendix B Cisco Catalyst Blade Switch 3120 for HP Debug Commands

debug spanning-tree bpdu

Use the debug spanning-tree bpdu privileged EXEC command to enable debugging of sent and
received spanning-tree bridge protocol data units (BPDUs). Use the no form of this command to disable
debugging.
Syntax Description
receive
transmit
Defaults Debugging is disabled.
Command Modes
Privileged EXEC
Command History Release
12.2(40)EX
Usage Guidelines
The undebug spanning-tree bpdu command is the same as the no debug spanning-tree bpdu
command.
When you enable debugging, it is enabled only on the stack master. To enable debugging on a stack
member, you can start a session from the stack master by using the session switch-number privileged
EXEC command. Then enter the debug command at the command-line prompt of the stack member. You
also can use the remote command stack-member-number LINE privileged EXEC command on the stack
master switch to enable debugging on a member switch without first starting a session.
Related Commands Command
show debugging
show spanning-tree
OL-12248-01
debug spanning-tree bpdu [receive | transmit]
no debug spanning-tree bpdu [receive | transmit]
(Optional) Display the nonoptimized path for received BPDU debug messages.
(Optional) Display the nonoptimized path for sent BPDU debug messages.
Modification
This command was introduced.
Description
Displays information about the types of debugging that are enabled.
Displays spanning-tree state information.
Cisco Catalyst Blade Switch 3120 for HP Command Reference
debug spanning-tree bpdu
B-73