B-21
Cisco ME 3800X and ME 3600X Switch Command Reference
OL-28238-01
Appendix B Cisco ME 3800X and ME 3600X Switch Debug Commands
debug spanning-tree
debug spanning-tree
To enable debugging of spanning-tree activities, use the
debug spanning-tree
command in privileged
EXEC mode. To disable debugging, use the
no
form of this command.
debug spanning-tree
{
all
|
bpdu
|
bpdu-opt
|
config
|
etherchannel
|
events
|
exceptions
|
general
|
mstp
|
pvst+
|
root
|
snmp
|
switch
|
synchronization | vlan-shim
}
no debug spanning-tree
{
all
|
bpdu
|
bpdu-opt
|
config
|
etherchannel
|
events
|
exceptions
|
general
|
mstp
|
pvst+
|
root
|
snmp
|
switch
|
synchronization | vlan-shim
}
Syntax Description
Note
Though visible in the command-line help strings, the
csuf/csrt
keyword is not supported.
Defaults
Debugging is disabled.
Command Modes
Privileged EXEC
all
Displays all spanning-tree debug messages.
bpdu
Displays spanning-tree bridge protocol data unit (BPDU) debug messages. See
the
command.
bpdu-opt
Displays optimized BPDU handling debug messages. See the
command.
config
Displays spanning-tree configuration change debug messages.
etherchannel
Displays EtherChannel-support debug messages.
events
Displays spanning-tree topology event debug messages.
exceptions
Displays spanning-tree exception debug messages.
general
Displays general spanning-tree activity debug messages.
mstp
Debug Multiple Spanning Tree Protocol events. See the
command.
pvst+
Displays per-VLAN spanning-tree plus (PVST+) event debug messages.
root
Displays spanning-tree root-event debug messages.
snmp
Displays spanning-tree Simple Network Management Protocol (SNMP)
handling debug messages.
switch
Displays switch shim command debug messages. This shim is the software
module that is the interface between the generic Spanning Tree Protocol (STP)
code and the platform-specific code of various switch platforms. See the
command.
synchronization
Displays the spanning-tree synchronization event debug messages.
vlan-shim
Displays spanning-tree VLAN shim debug messages. See the
Summary of Contents for ME 3600X
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