Command Line Interface
4-194
4
spanning-tree mst cost
This command configures the path cost on a spanning instance in the Multiple
Spanning Tree. Use the
no
form to restore the default.
Syntax
spanning-tree mst
instance_id
cost
cost
no spanning-tree mst
instance_id
cost
•
instance_id
- Instance identifier of the spanning tree.
(Range: 1-4094, no leading zeroes)
•
cost
- Path cost for an interface. (Range: 1-200,000,000)
The recommended range is -
- Ethernet: 200,000-20,000,000
- Fast Ethernet: 20,000-2,000,000
- Gigabit Ethernet: 2,000-200,000
Default Setting
• 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)
Command Usage
• 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
Related Commands
spanning-tree mst port-priority (4-195)
Console(config)#interface ethernet ethernet 1/5
Console(config-if)#spanning-tree mst 1 cost 50
Console(config-if)#
Summary of Contents for Matrix-V V2H124-24P
Page 2: ......
Page 8: ...Notice vi...
Page 22: ...Contents xx...
Page 26: ...Tables xxiv...
Page 30: ...Figures xxviii...
Page 38: ...Introduction 1 8 1...
Page 50: ...Initial Configuration 2 12 2...
Page 159: ...Port Configuration 3 109 3 Figure 3 66 Displaying Etherlike and RMON Statistics...
Page 234: ...Configuring the Switch 3 184 3...
Page 480: ...Command Line Interface 4 246 4...
Page 496: ...Index Index 4...
Page 497: ......
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