Spanning-Tree Path-Cost - Allied Telesis SwitchBlade x908 Series Software Reference Manual

spanning-tree path-cost

Use this command to set the cost of a path for the specified port. This value then combines
with others along the path to the root bridge in order to determine the total cost path value
from the particular port, to the root bridge. The lower the numeric value, the higher the
priority of the path. This applies when the port is the root port.
Use this command for RSTP, STP or MSTP. When MSTP mode is configured, this will apply to
the port's path cost for the CIST.
Syntax
spanning-tree path-cost <pathcost>
no spanning-tree path-cost
Parameter
<pathcost>
Interface mode
Mode
The default path cost values and the range of recommended path cost values depend on the
Default
port speed, as shown in the following table from the IEEE 802.1q-2003 and IEEE 802.1d-2004
standards.
Port speed
Less than 100 Kb/s
1Mbps
10Mbps
100 Mbps
1 Gbps
10 Gbps
100 Gbps
1Tbps
10 Tbps
Example
awplus(config-if)#
C613-50007-01 REV B
Description
<1-200000000> The cost to be assigned to the port.
Default path cost
200,000,000
20,000,000
2,000,000
200,000
20,000
2,000
200
20
2
awplus# configure terminal
awplus(config)# interface port1.1.2
spanning-tree path-cost 123
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
Spanning Tree Commands
Recommended path cost range
20,000,000-200,000,000
2,000,000-20,000,000
200,000-2,000,000
20,000-200,000
2,000-20,000
200-2, 000
20-200
2-200
2-20
19.39