Enabling The Output Of Port State Transition Information; Enabling The Mstp Feature; Performing Mcheck - HP A5120 EI Series Configuration Manual

Enabling the output of port state transition information

A large-scale, MSTP-enabled network can have many MSTIs, and ports might frequently transition from
one state to another. In this situation, you can enable devices to output the port state transition
information of all MSTIs or the specified MSTI in order to monitor the port states in real time.
Make this configuration separately on the root bridge and on the leaf nodes.
Follow these steps to enable output of port state transition information:
To do...
Enter system view
Enable output of port state
transition information

Enabling the MSTP feature

You must enable MSTP for the device before any other MSTP-related configurations can take effect.
Make this configuration on the root bridge and on the leaf nodes separately.
Follow these steps to enable the MSTP feature:
To do...
Enter system view
Enable the MSTP feature globally
Enter interface
view or port
group view
Enable the MSTP feature for the ports
NOTE:

In system view, you can use the stp enable or undo stp enable command to enable or disable STP globally.

You can use the undo stp enable command to disable the MSTP feature for certain ports so that they will not
participate in spanning tree calculation to save the CPU resources of the device.

Performing mCheck

MSTP has three working modes: STP compatible mode, RSTP mode, and MSTP mode.
Use the command...
system-view
stp port-log { all | instance
instance-id }
Use the command...
system-view
stp enable
Enter Ethernet
interface view or interface interface-type
Layer 2 aggregate interface-number
interface view
Enter port group port-group manual port-group-
view name
stp enable
Remarks
—
Required
Enabled by default.
80
Remarks
—
Required
MSTP is globally disabled by
default.
Required
Use either command.
Optional
By default, MSTP is enabled for
all ports after it is enabled for
the device globally.