Table 29-3 Default Sta Path Costs - SMC Networks TigerStack II SMC8848M Management Manual

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.
Port Type
Gigabit
Ethernet
10G Ethernet
* Use the spanning-tree pathcost method command on page 29-9 to set the path cost
method.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• This command is used by the Spanning Tree Algorithm to determine
the best path between devices. Therefore, lower values should be
assigned to ports attached to faster media, and higher values assigned
to ports with slower media.
• Path cost takes precedence over port priority.
• When the spanning-tree pathcost method (page 29-9) is set to short,
the maximum value for path cost is 65,535.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree cost 50
Console(config-if)#

Table 29-3 Default STA Path Costs

Link Type
IEEE 802.1D-1998
Full Duplex 4
Trunk 4
Full Duplex 2
Trunk 2
-
SPANNING TREE COST
* IEEE 802.1w-2001
10,000
5,000
1000
500
*
29-17