9-3DescriptionUse the bandwidth-reference command to specify a reference bandwidth value for link costcalculation.Use the undo bandwidth-reference command to restore the default value.The default value is 100 Mbps.You can configure an OSPFv3 cost for an interface with one of the following two methods:z Configure the cost value in interface view.z Configure a bandwidth reference value, and OSPFv3 computes the cost automatically based onthe bandwidth reference value: Interface OSPFv3 cost = Bandwidth reference value/Interfacebandwidth. If the calculated cost is greater than 65535, the value of 65535 is used.If no cost value is configured for an interface, OSPFv3 computes the interface cost valueautomatically:Examples# Specify the reference bandwidth value as 1000 Mbps. system-view[Sysname] ospfv3 1[Sysname-ospfv3-1] bandwidth-reference 1000default costSyntaxdefault cost valueundo default costViewOSPFv3 viewDefault Level2: System levelParametersvalue: Specifies a default cost for redistributed routes, in the range of 1 to 16777214.DescriptionUse the default cost command to configure a default cost for redistributed routes.Use the undo default cost command to restore the default.By default, the default cost is 1.You need to configure the default cost value for redistributed routes to advertise them throughout thewhole AS.If multiple OSPFv3 processes are available, use of this command takes effect for the current processonly.Examples# Specify the default cost for redistributed routes as 10. system-view[Sysname] ospfv3 1