Brocade Network OS Command Reference v4.1.0 - Manual (Page 235)

Network OS Command Reference 197
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debug spanning-tree
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debug spanning-tree
Enables debugging for the Spanning Tree Protocol (STP).
Synopsis debug spanning-tree {all | bpdu [rx | tx [all | interface port-channel number |
fortygigabitethernet slot/port | tengigabitethernet slot/port | gigabitethernet slot/port]}
no debug spanning-tree {all | bpdu [rx | tx [all | interface port-channel number |
fortygigabitethernet slot/port | tengigabitethernet slot/port | gigabitethernet slot/port]}
Operands all Turns on spanning tree packet debugging on all interfaces.
bpdu Turns on Bridge Protocol Data Unit debugging.
rx Turns on debugging for only received spanning-tree packets.
tx Turns on debugging for only transmitted spanning-tree packets.
interface Use this parameter to specify the interface to be monitored.
port-channel number
Specifies the port-channel interface. Valid values range from 1
through 6144.
fortygigabitethernet rbridge-id/slot/port
Specifies a valid 40-gigabit Ethernet interface.
slot Specifies a valid slot number.
port Specifies a valid port number.
tengigabitethernet rbridge-id/slot/port
Specifies a valid 10-gigabit Ethernet interface.
slot Specifies a valid slot number.
port Specifies a valid port number.
gigabitethernet rbridge-id/slot/port
Specifies a valid 1-gigabit Ethernet interface.
slot Specifies a valid slot number.
port Specifies a valid port number.
Defaults STP debugging is disabled.
Command Modes Privileged EXEC mode
Description Use this command to enable or disable debugging for STP.
Usage Guidelines Enter terminal monitor to display debugging outputs.
Enter no debug spanning-tree to disable debugging.
Examples To enable debugging of spanning-tree for both Rx and Tx on the 10-gigabit Ethernet interface 0/1:
switch# debug spanning-tree bpdu rx interface tengigabitethernet 0/1
switch# debug spanning-tree bpdu tx interface tengigabitethernet 0/1
switch# show debug spanning-tree
MSTP debugging status:
Spanning-tree rx debugging is off