Motorola EX-3524, Cli Reference Manual

Page: 380 / 617

Chapter 16
| Spanning Tree Commands
– 380 –
Example
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree edge-port
Console(config-if)#spanning-tree bpdu-guard
Console(config-if)#
Related Commands
spanning-tree edge-port (381)
spanning-tree spanning-disabled (389)
spanning-tree cost
This command configures the spanning tree path cost for the specified interface.
Use the
no form to restore the default auto-configuration mode.
Syntax
spanning-tree cost cost
no spanning-tree cost
cost - The path cost for the port. (Range: 0 for auto-configuration, 1-65535
for short path cost method, 1-200,000,000 for long path cost method) 9
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. When the short path cost
method is selected and the default path cost recommended by the IEEE 8021w
standard exceeds 65,535, the default is set to 65,535.
Table 80: Recommended STA Path Cost Range
Port Type Short Path Cost
(IEEE 802.1D-1998) Long Path Cost
(802.1D-2004)
Ethernet 50-600 200,000-20,000,000
Fast Ethernet 10-60 20,000-2,000,000
Gigabit Ethernet 3-10 2,000-200,000
9. Use the spanning-tree pathcost method command on page 373 to set the path cost
method. The range dsiplayed in the CLI prompt message shows the maximum value for
path cost. However, note that the switch still enforces the rules for path cost based on the
specified path cost method (long or short).
Table 81: Default STA Path Costs
Port Type Short Path Cost (IEEE
802.1D-1998) Long Path Cost
(802.1D-2004)
Ethernet 65,535 1,000,000
Fast Ethernet 65,535 100,000
Gigabit Ethernet 10,000 10,000