– interface-cost:The range is from 1 to 65535. Default cost is based on the bandwidth.• Specify how the OSPF interface cost is calculated based on the reference bandwidth method. The cost of an interface iscalculated as Reference Bandwidth/Interface speed.ROUTER OSPFv3auto-cost [reference-bandwidth ref-bw]To return to the default bandwidth or to assign cost based on the interface type, use the no auto-cost [reference-bandwidth ref-bw] command.– ref-bw: The range is from 1 to 4294967. The default is 100 megabits per second.Assigning IPv6 Addresses on an InterfaceTo assign IPv6 addresses to an interface, use the following commands.1. Assign an IPv6 address to the interface.CONF-INT-type slot/port modeipv6 address ipv6 addressIPv6 addresses are normally written as eight groups of four hexadecimal digits; separate each group by a colon (:).The format is A:B:C::F/128.2. Bring up the interface.CONF-INT-type slot/port modeno shutdownAssigning Area ID on an InterfaceTo assign the OSPFv3 process to an interface, use the following command.The ipv6 ospf area command enables OSPFv3 on an interface and places the interface in the specified area. Additionally, thecommand creates the OSPFv3 process with ID on the router. OSPFv2 requires two commands to accomplish the same tasks — therouter ospf command to create the OSPF process, then the network area command to enable OSPFv2 on an interface.NOTE: The OSPFv2 network area command enables OSPFv2 on multiple interfaces with the single command. Use theOSPFv3 ipv6 ospf area command on each interface that runs OSPFv3.• Assign the OSPFv3 process and an OSPFv3 area to this interface.CONF-INT-type slot/port modeipv6 ospf process-id area area-id– process-id: the process ID number assigned.– area-id: the area ID for this interface.Assigning OSPFv3 Process ID and Router ID GloballyTo assign, disable, or reset OSPFv3 globally, use the following commands.• Enable the OSPFv3 process globally and enter OSPFv3 mode.CONFIGURATION modeipv6 router ospf {process ID}The range is from 0 to 65535.• Assign the router ID for this OSPFv3 process.Open Shortest Path First (OSPFv2 and OSPFv3) 613
