Chapter 4: OSPF in a Single Area

Commands:

4.3.1 Configuring OSPF Routing

Router(config)# router ospf process-id
Router(config-router)# network network-address wild-card-mask area area-number

4.3.2 Prioritizing the DR (Router ID)

Sequence (If a router with a higher priority is added to the network, the DR and BDR do not change.):

  1. Priority
    Router(config-if)# ip ospf priority number
     
  2. Highest Loopback Address
    Router(config)# interface loopback 0
    Router(config-if)# ip address ip-address mask
  3. Highest Interface Address

 

Lab 4.3.2 Authentication

Router(config-router)# area area-number authentication

Router(config-if)# ip ospf authentication-key password

 

4.4.3 Point-to-Point Configuration

Router(config-if)#interface type number point-to-point

4.4.5 Point-to-Multipoint Interfaces

Router(config-if)#ip ospf network point-to-multipoint

4.4.6 Multipoint configuration with broadcast network

Router(config-if)#ip ospf network broadcast

4.5.1 Show commands

Router# show ip protocols
Router# show ip ospf
Router# show ip ospf interface interface
Router# show ip ospf neighbor
Router# show ip ospf neighbor detail
Router# show ip ospf database
Router# show ip ospf adjacencies
Router# show ip ospf border-router
Router# show ip ospf virtual-links