CCIE實驗室考試指南(1)

Lab 01-
    Trouble-Shooting
    Everything was fine before lunch:
    Router_A
    Router_A#sh run
    Building configuration...
    Current configuration:
    !
    version 11.2
    no service password-encryption
    no service udp-small-servers
    no service tcp-small-servers
    !
    hostname Router_A
    !
    interface Ethernet0
    ip address 172.16.4.17 255.255.255.240
    !
    interface Ethernet1
    no ip address
    shutdown
    !
    interface Serial0
    ip address 10.16.0.5 255.255.255.252
    no fair-queue
    !
    interface Serial1
    ip address 10.16.1.5 255.255.255.252
    ip rip authentication mode 0
    !
    router ospf 100
    network 10.16.0.0 0.0.0.255 area 0
    network 10.16.1.0 0.0.0.255 area 1
    area 1 virtual-link 10.16.1.6 ...
    message-digest-key 10 md5 Router_C
    !
    no ip classless
    !
    line con 0
    exec-timeout 0 0
    line aux 0
    line vty 0 4
    login
    !
    end
    Router_A#sh ip ospf vir
    Router_A#sh ip ospf virtual-links
    Virtual Link OSPF_VL0 to router 10.16.1.6 is up
    Run as demand circuit
    DoNotAge LSA allowed.
    Transit area 1, via interface Serial1, ...
    Cost of using 64
    Transmit Delay is 1 sec, State POINT_TO_POINT,
    Timer intervals configured, Hello 10, Dead 40, ...
    Wait 40, Retransmit 5
    Hello due in 00:00:02
    Adjacency State FULL (Hello suppressed)
    Router_A#sh ip ospf vir
    Router_A#sh ip ospf virtual-links
    Virtual Link OSPF_VL0 to router 10.16.1.6 is down
    Run as demand circuit
    DoNotAge LSA allowed.
    Transit area 1, Cost of using 65535
    Transmit Delay is 1 sec, State DOWN,
    Timer intervals configured, Hello 10, Dead 40, ...
    Wait 40, Retransmit 5
    Router_C