User`s manual

User’s Manual 345
Default
Ethernet – half duplex: 2,000,000; full duplex: 1,000,000; trunk: 500,000
Fast Ethernet – half duplex: 200,000; full duplex: 100,000; trunk: 50,000
Gigabit Ethernet – full duplex: 10,000; trunk: 5,000
Command Mode
Interface Configuration (Ethernet, Port Channel)
Usage Guidelines
Each spanning-tree instance is associated with a unique set of VLAN IDs.
This command is used by the multiple spanning-tree algorithm to determine the best path between devices.
Therefore, lower values should be assigned to interfaces attached to faster media, and higher values
assigned to interfaces with slower media.
Path cost takes precedence over interface priority.
Example
The following is sample output from the spanning-tree mst cost command.
Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree mst 1 cost 50
Console(config-if)#
Related Commands
spanning-tree mst port-priority
16.218 spanning-tree mst port-priority
This command configures the interface priority on a spanning instance in the Multiple Spanning Tree. Use
the no form to restore the default.
Syntax Description
spanning-tree mst instance_id port-priority priority
no spanning-tree mst instance_id port-priority
instance_id Instance identifier of the spanning tree. (Range: 1-4094, no leading zeroes)
priority Priority for an interface. (Range: 0-240 in steps of 16)
Default
128