Spanning-Tree Commands
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D E L L CO N F I D E N T I A L – P R E L I MI N A RY 5/ 1 5 /1 2 - F O R PR O O F O N LY
spanning-tree cost
Use the
spanning-tree cost
Interface Configuration (Ethernet, port-channel)
mode command to configure the spanning-tree path cost for a port. Use the
no
form of this command to restore the default configuration.
Syntax
spanning-tree cost
cost
no spanning-tree cost
Parameters
cost
—Specifies the port path cost. (Range: 1–200000000)
Default Configuration
Default path cost is determined by port speed and path cost method (long or
short) as shown below:
Command Mode
Interface Configuration (Ethernet, port-channel) mode
Example
The following example configures the spanning-tree cost on gigabitethernet
port
1/0/
15 to 35000.
Console(config)# interface gigabitethernet 1/0/15
Console(config-if)# spanning-tree cost 35000
Interface
Long
Short
Port-channel
20,000
4
Gigabit Ethernet (1000
Mbps)
20,000
4
Fast Ethernet (100 Mbps)
200,000
19
Ethernet (10 Mbps)
2,000,000
100