Configuring an OSPFv3 Interface to Automatically Adjust the Link Cost
Configuring an OSPFv3 interface to automatically adjust the link cost based on link quality facilitates route selection control and improves network reliability.
Context
A bit error refers to the deviation between a bit that is sent and the bit that is received. The bit error rate (BER) refers to the number of bit errors divided by the total number of bits transferred during a studied time interval. During data transmission, a high BER will degrade or even interrupt services in extreme cases.
To prevent this problem, configure OSPFv3 interfaces to automatically adjust link costs based on link quality so that unreliable links are not used by the optimal routes.
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The interface view is displayed.
- Run ipv6 enable
IPv6 is enabled on the interface.
- Run ospfv3 process-id area area-id [ instance instance-id ]
OSPFv3 is enabled on the interface.
- Run ospfv3 link-quality low incr-cost { cost | max-reachable } [ instance instance-id ]
The OSPFv3 interface is enabled to automatically adjust the link cost based on link quality.
The cost parameter specifies the link cost adjustment value. After this parameter is specified:
- If the link quality changes from good to low, the link cost equals the original link cost plus the adjustment value. The maximum link cost allowed is 65535.
- If the link quality changes from low to good, the original link cost applies.
- Run commit
The configuration is committed.