Configuring the path costs of ports, Configuration example – H3C Technologies H3C S12500 Series Switches User Manual
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Link speed
Port type
Path cost
IEEE
802.1d-1998
IEEE 802.1t
Private standard
Aggregate interface
containing 4 Selected
ports
5000 14
10 Gbps
Single Port
2
2000 2
Aggregate interface
containing 2 Selected
ports
1000 1
Aggregate interface
containing 3 Selected
ports
666 1
Aggregate interface
containing 4 Selected
ports
500 1
Configuring the path costs of ports
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view or port
group view.
•
Enter Ethernet interface view or
Layer 2 aggregate interface view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual
port-group-name
Use either command.
3.
Configure the path cost of the
ports.
•
In STP/RSTP mode:
stp cost cost
•
In PVST mode:
stp vlan vlan-list cost cost
•
In MSTP mode:
stp [ instance instance-id ] cost
cost
Use any command.
By default, the system
automatically calculates the
path cost of each port.
NOTE:
When the path cost of a port changes, the system re-calculates the role of the port and initiates a state
transition.
Configuration example
# In MSTP mode, specify the switch to calculate the default path costs of its ports by using IEEE
802.1d-1998, and set the path cost of GigabitEthernet 3/0/3 to 200 on MSTI 2.