Configure the following required and optional parameters:• bgp | connected | static: enter one of the keywords to redistribute those routes.• metric metric-value: The range is from 0 to 4294967295.• metric-type metric-type: enter 1 for OSPFv3 external route type 1 OR 2 for OSPFv3 external route type 2.• route-map map-name: enter a name of a configured route map.• tag tag-value: The range is from 0 to 4294967295.Configuring a Default RouteTo generate a default external route into the OSPFv3 routing domain, configure the following parameters.To specify the information for the default route, use the following command.• Specify the information for the default route.CONF-IPV6-ROUTER-OSPF modedefault-information originate [always [metric metric-value] [metric-type type-value]] [route-map map-name]Configure the following required and optional parameters:• always: indicate that default route information is always advertised.• metric metric-value: The range is from 0 to 4294967295.• metric-type metric-type: enter 1 for OSPFv3 external route type 1 OR 2 for OSPFv3 external route type 2.• route-map map-name: enter a name of a configured route map.Applying cost for OSPFv3Change in bandwidth directly affects the cost of OSPF routes.• Explicitly specify the cost of sending a packet on an interface.INTERFACE modeipv6 ospf interface-cost• 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 is calculated asReference 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.Enabling OSPFv3 Graceful RestartFollow the procedure in this section to configure graceful restart for OSPFv3. By default, OSPFv3 graceful restart is disabled and functionsonly in a helper role to help restarting neighbor routers in their graceful restarts when it receives a Grace LSA..626 Open Shortest Path First (OSPFv2 and OSPFv3)