9-7To do… Use the command… RemarksConfigure a virtual linkvlink-peer router-id [ hello seconds | retransmitseconds | trans-delay seconds | dead seconds |instance instance-id ] *Requiredz Both ends of a virtual link are ABRs that must be configured with the vlink-peer command.z Do not configure virtual links in the areas of a GR-capable process.Configuring OSPFv3 Network TypesOSPFv3 classifies networks into four types upon the link layer protocol:By default, the default OSPFv3 interface network types vary with the link layer protocols of theinterfaces:z When the link layer protocol is PPP, OSPFv3 considers the network type as P2P by default.z When the link layer protocol is Ethernet, OSPFv3 considers the network type as broadcast bydefault.You can change the network type of an OSPFv3 interface as needed. For example:z An NBMA network must be fully connected. That is, any two routers in the network must bedirectly reachable to each other through a virtual circuit. In the event no such direct link isavailable, you need to change the network type through a command.z If direct connections are not available between some routers in an NBMA network, the type ofinterfaces associated should be configured as P2MP, or as P2P for interfaces with only oneneighbor.PrerequisitesBefore configuring OSPFv3 network types, you have configured:z IPv6 functionsz OSPFv3 basic functionsConfiguring the OSPFv3 Network Type for an InterfaceFollow these steps to configure the OSPFv3 network type for an interface:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —
