Lenovo RackSwitch G8332 Command Reference Manual page 458

MSTP Port Configuration
458
G8332 Command Reference for ENOS 8.4
Table 224.
Multiple Spanning Tree Configuration Options (continued)
Command Syntax and Usage
show spanning­tree mst configuration
Displays the current MSTP settings.
Command mode: All
show spanning­tree mst <0‐32> information
Displays current MST information for the specified instance.
Command mode: All
MSTP port parameters are used to modify MSTP operation on an individual port
basis. MSTP parameters do not affect operation of RSTP/PVRST. For each port,
RSTP/PVRST/MSTP is turned on by default.
Table 225.
MSTP Port Configuration Options
Command Syntax and Usage
spanning­tree mst <0‐32> cost <0‐200000000>
Configures the port path cost for the specified MSTP instance. The port path
cost is used to help determine the designated port for a segment. Port path cost
is based on the port speed, and is calculated as follows:
1Gbps = 20000

10Gbps = 2000

The default value of 0 (zero) indicates that the default path cost will be
computed for an auto negotiated link speed.
Command mode: Interface port/Interface portchannel
[no] spanning­tree mst <0‐32> enable
Enables or disables the specified MSTP instance on the port.
Command mode: Interface port/Interface portchannel
spanning­tree mst <0‐32> port­priority <0‐240>
Configures the port priority for the specified MSTP instance. The port priority
helps determine which bridge port becomes the designated port. In a network
topology that has multiple bridge ports connected to a single segment, the port
with the lowest port priority becomes the designated port for the segment.
The range is 0 to 240, in steps of 16 (0, 16, 32...) and the default is 128.
Command mode: Interface port/Interface portchannel