Enabling The Output Of Port State Transition Information; Enabling The Mstp Feature - HP 5820X series Configuration Manual

To do...
3. Configure the mode the port uses to
recognize/send MSTP packets
MSTP provides the MSTP packet format incompatibility guard function. In MSTP mode, if a port is
configured to recognize/send MSTP packets in a mode other than auto, and receives a packet in a
format different from the specified type, the port will become a designated port and remain in the
discarding state to prevent the occurrence of a loop.
MSTP provides the MSTP packet format frequent change guard function. If a port receives MSTP packets
of different formats frequently, the MSTP packet format configuration can contain errors. If the port is
working in MSTP mode, it will be disabled for protection. The closed ports can be restored only by the
network administrators.

Enabling the output of port state transition information

A large-scale, MSTP-enabled network can have many MSTIs, and ports may 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 so as to monitor the port states in real time.
Make this configuration on the root bridge and on the leaf nodes separately.
To enable output of port state transition information:
To do...
1. Enter system view
2. 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.
To enable the MSTP feature:
To do...
1. Enter system view
2. Enable the MSTP feature globally
3. Enter
interface
view or port
group view
Use the command...
system-view
stp port-log { all | instance
instance-id }
Use the command...
system-view
stp enable
Enter Ethernet
interface interface-type
interface view or
Layer 2 aggregate interface-number
interface view
Enter port group port-group manual port-group-
view name
Use the command...
stp compliance { auto | dot1s
| legacy }
82
Remarks
Required.
auto by default.
Remarks
—
Required
Enabled by default
Remarks
—
Required.
MSTP is globally disabled by
default.
Required.
Use either command.