Debug Spanning-Tree Bpdu - Cisco Catalyst 3750-X Command Reference Manual

Cisco ios release 15.2(1)e and later

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Catalyst 3750-X and 3560-X Switch 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

Syntax Description

Debugging is disabled.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

The undebug spanning-tree bpdu command is the same as the no debug spanning-tree bpdu

When you enable debugging on a switch stack, 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

show debugging

show spanning-tree

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.

Displays information about the types of debugging that are enabled.

Displays spanning-tree state information.

Catalyst 3750-X and 3560-X Switch Command Reference

debug spanning-tree bpdu

Catalyst 3560-x