14.
Multiple Spanning Tree Protocol (MSTP)
MN700004 Rev 01
169
By default, MSTP port roles debugging is disabled.
Command Syntax
device-name
#
debug mstp roles
{
all
|
<
instance-id
>
}
device-name
#
no
debug mstp roles
{
all
|
<
instance-id
>
}
Argument Description
all
Displays logs for all instances.
instance-id
The MST instance ID, the range is 0 to 15.
Example
device-name
#
debug mstp roles all
MST MSTI 1 Select-Port-Roles
tMstPIM: 1970/01/01 01:29:50 : =============================
tMstPIM: 1970/01/01 01:29:50 : This bridge is the root
tMstPIM: 1970/01/01 01:29:50 : Port 1/1/2 Is DesignatedPort
tMstPIM: 1970/01/01 01:29:50 : Port 1/1/3 Is DesignatedPort
tMstPIM: 1970/01/01 01:29:50 : Port 1/1/4 Is DesignatedPort
Debugging the MSTP Handshake
The
debug mstp handshake
command, in Privileged (Enable) mode, displays logs of the
devices' handshaking in the Multiple Spanning Tree Protocol (MSTP). Use the
no
form of this
command to disable the handshaking debugging.
The
debug mstp handshake
command will not be saved after reload.
By default, MSTP port handshake debugging is disabled.
Command Syntax
device-name
#
debug mstp handshake
{
all
|
<
instance-id
>
}
device-name
#
no
debug mstp handshake
{
all
|
<
instance-id
>
}
Argument Description
all
Displays logs for all instances.
instance-id
The MST instance ID, the range is 0 to 15.
Example
device-name
#
debug mstp handshake all
tMstPRT: 1970/01/01 01:22:25 : Port AG03 msti 1 Synced
tMstPRT: 1970/01/01 01:22:25 : Port AG03 msti 2 Synced
Debugging the MSTP PIM
The
debug mstp pim
command, in Privileged (Enable) mode, displays logs of the Port
Information state Machine (PIM) in the Multiple Spanning Tree Protocol (MSTP) for a
specified port range. Use the
no
form of this command to disable the MSTP PIM debugging.
The
debug mstp pim
command will not be saved after reload.