4-11OSPF FeaturesThe switches support the following OSPF features:z Stub area: Stub area is defined to reduce the cost for the routers in the area to receive ASE routes.z NSSA: NSSA is defined to remove the limit on the topology in a Stub area.z OSPF multi-process: Multiple OSPF processes can be run on a router.z Sharing discovered routing information with other dynamic routing protocols: At present, OSPFsupports importing the routes of other dynamic routing protocols (such as RIP), and static routes asOSPF external routes into the AS to which the router belongs. In addition, OSPF supportsadvertising the routing information it discovered to other routing protocols.z Packet authentication: OSPF supports the authentication of the packets between neighboringrouters in the same area by using one of the two methods: plain text authentication and MD5authentication.z Flexible configuration of router interface parameters: For a router interface, you can configure thefollowing OSPF parameters: output cost, Hello interval, retransmission interval, interfacetransmission delay, route priority, dead time for a neighboring router, and packet authenticationmode and authentication key.z Virtual link: Virtual links can be configured.OSPF Configuration Task ListComplete the following tasks to configure OSPF:Task RemarksBasic OSPF Configuration RequiredOSPF Area Attribute Configuration OptionalConfiguring the Network Type of an OSPF Interface OptionalConfiguring an NBMA/P2MP Neighbor OptionalOSPF Network Type ConfigurationConfiguring the DR Priority on an OSPF Interface OptionalConfiguring OSPF Route Summarization OptionalConfiguring OSPF to Filter Received Routes OptionalConfiguring the OSPF Cost on an Interface OptionalConfiguring OSPF Route Priority OptionalConfiguring the Maximum Number of OSPF ECMPRoutes OptionalOSPF Route ControlConfiguring OSPF to Redistribute External Routes OptionalOSPF Network Adjustment andOptimizationConfiguring OSPF Timers Optional
