OSPF area verification area-id authentication

OSPF area verification area AREA area-id authentication configuration simple area verification Step 1 interface configuration verification required KEY ip ospf authentication-key ciscoip ospf message-digest-key 1 md5 ciscoac // enable MD5 KEYstep2 enable authentication in the OSPF process router ospf 1 area 0 authentication // enable simple authentication area 0 authentication message-digest // enable MD5 encryption verification setp3 check whether show ip ospf rtrA # show is enabled ip ospf Routing Process "ospf 1" with ID 1.1.1.1 Area BACKBONE (0) number of interfaces in this area is 2 Area has simple password authenticationRouter A interface Loopback0 ip address 1.1.1.1 255.255.255.255! Interface Serial0/0 ip address 10.1.1.9 255.255.255.252 ip ospf authentication-key cisco! Interface Serial0/1 ip address 10.1.1.1 255.255.255.252 ip ospf authentication-key cisco clock rate 64000! Router ospf 1 area 0 authentication network 10.1.1.0 0.0.0.15 area 0 _________________________________________ Router B interface Loopback0 ip address 2.2.2.2 255.255.255.255! Interface Serial0 ip address 10.1.1.2 255.255.255.252 ip ospf authentication-key cisco! Interface Serial1 ip address 10.1.1.5 255.255.255.252 ip ospf authentication-key cisco clock rate 64000! Router ospf 1 area 0 authentication network 10.1.1.0 0.0.0.15 area 0 __________________________________________ Router C interface Loopback0 ip address 3.3.3.3 255.255.255! Interface Serial0 ip address 10.1.1.6 255.255.255.252 ip ospf authentication-key cisco! Interface Serial1 ip address 10.1.1.10 255.255.255.252 ip ospf authentication-key cisco clock rate 64000! Router ospf 1 area 0 authentication network 10.1.1.0 0.0.15 area 0