4-12Task RemarksConfiguring the LSA transmission delay OptionalConfiguring the SPF Calculation Interval OptionalDisabling OSPF Packet Transmission on anInterface OptionalConfiguring OSPF Authentication OptionalConfiguring the MTU Field in DD Packets OptionalEnabling OSPF Logging of Neighbor StateChanges OptionalConfiguring OSPF Network Management OptionalBasic OSPF ConfigurationBefore you can configure other OSPF features, you must first enable OSPF and specify the interfaceand area ID.Configuration PrerequisitesBefore configuring OSPF, perform the following tasks:z Configuring the link layer protocolz Configuring the network layer addresses of interfaces so that the adjacent nodes are reachable toeach other at the network layerBasic OSPF ConfigurationBasic OSPF configuration includes:z Configuring router IDTo ensure stable OSPF operation, you should determine the division of router IDs and manuallyconfigure them when implementing network planning. When you configure router IDs manually, makesure each router ID is uniquely used by one router in the AS. A common practice is to set the IP addressof an interface on the router to the router ID.z Enabling OSPFThe switches support multiple OSPF processes. To enable multiple OSPF processes on a router, youneed to specify different process IDs. OSPF process ID is only locally significant; it does not affect thepacket exchange between an OSPF process and other routers. Therefore, packets can be exchangedbetween routers with different OSPF processes IDs.z Configuring an area and the network segments in the area. You need to plan areas in an AS beforeperforming the corresponding configurations on each router.When configuring the routers in the same area, please note that most configurations should beuniformly made based on the area. Wrong configuration may disable information transmission betweenneighboring routers and even lead to congestion or self-loop of routing information.Follow these steps to perform basic OSPF configurations:
