Configuring OSPFv3 Area Parameters 1053n ■ Configure an OSPFv3 process ID when enabling OSPFv3. The process ID takeseffect locally, without affecting packet exchange between routers.■ When configuring a router ID, make sure each router has a unique ID. If arouter runs multiple OSPFv3 processes, you need to specify a router ID for eachprocess.■ You need to specify a router ID manually, which is necessary to make OSPFv3work.Configuring OSPFv3Area ParametersThe stub area and virtual link support of OSPFv3 has the same principle andapplication environments with OSPFv2.Splitting an OSPFv3 AS into multiple areas reduces the number of LSAs onnetworks and extends OSPFv3 application. For those non-backbone areas residingon the AS boundary, you can configure them as Stub areas to further reduce thesize of routing tables on routers in these areas and the number of LSAs.Non-backbone areas exchange routing information via the backbone area.Therefore, the backbone and non-backbone areas, including the backbone itselfmust maintain connectivity. In practice, necessary physical links may not beavailable for connectivity. You can configure virtual links to address it.Prerequisites ■ Enable IPv6 packet forwarding■ Configure OSPFv3 basic functionsConfiguring an OSPFv3Stub AreaTo configure an OSPFv3 stub area, use the following commands:n ■ Configurations on the routers attached to the same area should be compatible;otherwise, no neighbor relationships may be established between the routers.■ You cannot delete an OSPFv3 area directly. Only when you remove allconfigurations in area view and all interfaces attached to the area becomedown, can the area be removed automatically.■ All routers attached to a stub area must be configured with the stubcommand. The keyword no-summary is only available on the ABR.Enable OSPFv3 on theinterfaceospfv3 process-id areaarea-id [ instanceinstance-id ]RequiredNot enabled by defaultTo do... Use the command... RemarksTo do... Use the command... RemarksEnter system view system-view -Enter OSPFv3 view ospfv3 [ process-id ] -Enter OSPFv3 area view area area-id -Configure the area as a stubareastub [ no-summary ] RequiredNot configured by defaultConfigure the default routecost of sending a packet tothe stub areadefault-cost value OptionalDefaults to 1
