SMC Networks SMC8708L2 Switch User Manual


 
S
PANNING
T
REE
C
OMMANDS
4-223
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: 0-4094, 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
- 10 Gigabit Ethernet: 200-20,000
Default Setting
By default, the system automatically detects the speed and duplex mode
used on each port, and configures the path cost according to the values
shown below. Path cost “0” is used to indicate auto-configuration
mode.
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
10 Gigabit Ethernet – full duplex: 1000; trunk: 500
Command Mode
Interface Configuration (Ethernet Ports 1-8, Port Channel)