OSPFNetworkTypes文件材料.pptVIP

Configuring OSPF;OSPF Network Types;Setting Priority for DR Election;NBMA Topology;DR Election in NBMA Topology;Frame Relay Topologies;OSPF over NBMA Topology Modes of Operation;Selecting the OSPF Network Type for NBMA Networks;Nonbroadcast Mode (NBMA Mode);Point-to-Multipoint Mode;Point-to-Multipoint Configuration;Point-to-Multipoint Example;Point-to-Multipoint Nonbroadcast;Using Subinterfaces;Point-to-Point Subinterfaces;Point-to-Point Subinterface Example;Multipoint Subinterfaces;Multipoint Subinterface Example;;Creation of Adjacencies for Point-to-Point Mode ;Creation of Adjacencies for Broadcast Mode;Summary;Summary (Cont.);Configuring OSPF;Issues with Maintaining a Large OSPF Network;The Solution: OSPF Hierarchical Routing;Types of OSPF Routers;Virtual links are used to connect a discontiguous area to area 0. A logical connection is built between router A and router B. Virtual links are recommended for backup or temporary connections.;Configuring Virtual Links;OSPF Virtual Link Configuration Example;RouterA#sh ip ospf virtual-links Virtual Link OSPF_VL0 to router 10.2.2.2 is up Run as demand circuit DoNotAge LSA allowed. Transit area 1, via interface Serial0/0/1, Cost of using 781 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:07 Adjacency State FULL (Hello suppressed) Index 1/2, retransmission queue length 0, number of retransmission 1 First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec RouterA#;LSA Type;LSA Type 1: Router LSA;LSA Type 2: Network LSA;LSA Type 3: Summary LSA;LSA Type 4: Summary LSA;LSA Type 5: External LSA;Interpreting the OSPF Database;Interpreting the Routing Table: Types of Routes;Calculating Costs for E1 and E2 Routes;The show ip route Command;OSPF LSDB Overload Protection;ip ospf cost interface-cost ;Summary;Summary (Cont