CLI Reference Guide-R07

Chapter 19 | Spanning Tree Commands
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spanning-tree
mst configuration
This command changes to Multiple Spanning Tree (MST) configuration mode.
Default Setting
No VLANs are mapped to any MST instance.
The region name is set the switch’s MAC address.
Command Mode
Global Configuration
Example
Console(config)#spanning-tree mst configuration
Console(config-mstp)#
Related Commands
mst vlan (457)
mst priority (457)
name (458)
revision (459)
max-hops (456)
spanning-tree
pathcost method
This command configures the path cost method used for Rapid Spanning Tree and
Multiple Spanning Tree. Use the no form to restore the default.
Syntax
spanning-tree pathcost method {long | short}
no spanning-tree pathcost method
long - Specifies 32-bit based values that range from 1-200,000,000.
This method is based on the IEEE 802.1w Rapid Spanning Tree Protocol.
short - Specifies 16-bit based values that range from 1-65535.
This method is based on the IEEE 802.1 Spanning Tree Protocol.
Default Setting
Long method
Command Mode
Global Configuration
Command Usage
◆ The path cost method is used to determine the best path between devices.
Therefore, lower values should be assigned to ports attached to faster media,
and higher values assigned to ports with slower media. Note that path cost
(page 461) takes precedence over port priority (page 469).