B-65
Cisco Catalyst Blade Switch 3030 Command Reference
78-17262-01
Appendix B Cisco Catalyst Blade Switch 3030 Debug Commands
debug spanning-tree mstp
debug spanning-tree mstp
Use the
debug spanning-tree mstp
privileged EXEC command to enable debugging of the Multiple
Spanning Tree Protocol (MSTP) software. Use the
no
form of this command to disable debugging.
debug spanning-tree mstp
{
all
|
boundary
|
bpdu-rx
|
bpdu-tx
|
errors
|
flush
|
init
|
migration
|
pm
|
proposals
|
region
|
roles
|
sanity_check
|
sync
|
tc
|
timers
}
no debug spanning-tree mstp
{
all
|
boundary
|
bpdu-rx
|
bpdu-tx
|
errors
|
flush
|
init
|
migration
|
pm
|
proposals
|
region
|
roles
|
sanity_check
|
sync
|
tc
|
timers
}
Syntax Description
Defaults
Debugging is disabled.
Command Modes
Privileged EXEC
Command History
all
Enable all the debugging messages.
boundary
Debug flag changes at these boundaries:
•
An multiple spanning-tree (MST) region and a single spanning-tree region
running Rapid Spanning Tree Protocol (RSTP)
•
An MST region and a single spanning-tree region running 802.1D
•
An MST region and another MST region with a different configuration
bpdu-rx
Debug the received MST bridge protocol data units (BPDUs).
bpdu-tx
Debug the sent MST BPDUs.
errors
Debug MSTP errors.
flush
Debug the port flushing mechanism.
init
Debug the initialization of the MSTP data structures.
migration
Debug the protocol migration state machine.
pm
Debug MSTP port manager events.
proposals
Debug handshake messages between the designated switch and the root switch.
region
Debug the region synchronization between the switch processor (SP) and the route
processor (RP).
roles
Debug MSTP roles.
sanity_check
Debug the received BPDU sanity check messages.
sync
Debug the port synchronization events.
tc
Debug topology change notification events.
timers
Debug the MSTP timers for start, stop, and expire events.
Release
Modification
12.2(25)SEE
This command was introduced.
