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Setting the Link Cost for an OSPF Interface
Setting the Link Cost for an OSPF Interface
Context
OSPF can automatically calculate the link cost for an
interface according to the interface bandwidth. You can also set the
link cost for the interface using commands.
If you do not set
the cost of an OSPF interface using the ospf costcost command, OSPF automatically calculates the cost of
the interface according to the interface bandwidth. The calculation
formula is as follows: Cost of the interface = Bandwidth reference
value/Interface bandwidth. The integer of the calculated result is
the cost of the interface. If the calculated result is smaller than
1, the cost value is 1. Changing the bandwidth reference
value can change the cost of an interface.
Procedure
Setting the link cost for an OSPF interface
Run system-view
The system view is displayed.
Run interfaceinterface-typeinterface-number
The OSPF interface view is displayed.
Run ospf costcost
The cost of the OSPF interface is set.
Setting the bandwidth reference value
Run system-view
The system view is displayed.
Run ospf [ process-id ]
The OSPF process view is displayed.
Run bandwidth-referencevalue
The bandwidth reference
value is set.
The parameter value specifies
the bandwidth reference value used to calculate the link cost, in
Mbit/s.
Ensure
that the bandwidth reference values of routers in an OSPF process are the same.