Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 389)

Brocade 6910 Ethernet Access Switch Configuration Guide 339
53-1002581-01
Spanning Tree Commands
18
spanning-tree pathcost method
This command configures the path cost method used for Rapid Spanning Tree and Multiple
Spanning Tree. Use the no form to restore the default.
Syntax
spanning-tree pathcost method {long | short}
no spanning-tree pathcost method
long - Specifies 32-bit based values that range from 1-200,000,000. This method is based
on the IEEE 802.1w Rapid Spanning Tree Protocol.
short - Specifies 16-bit based values that range from 1-65535.
This method is based on the IEEE 802.1 Spanning Tree Protocol.
Default Setting
Long method
Command Mode
Global Configuration
Command Usage
• The path cost method is used 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. Note that path cost (
page 346 ) takes precedence over port priority
( page 353 ).
• The path cost methods apply to all spanning tree modes (STP, RSTP and MSTP). Specifically,
the long method can be applied to STP since this mode is supported by a backward compatible
mode of RSTP.
Example
Console(config)#spanning-tree pathcost method long
Console(config)#
spanning-tree priority
This command configures the spanning tree priority globally for this switch. Use the no form to
restore the default.
Syntax
spanning-tree priority priority
no spanning-tree priority
priority - Priority of the bridge. (Range – 0-61440, in steps of 4096; Options: 0, 4096,
8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152,
53248, 57344, 61440)
Default Setting
32768