OSPF邻居认证实际案例及验证过程

// R1 //
int e0/0
  ip ad 192.1.1.1 255.255.255.0
  ip ospf authentication-key cisco    //明文认证，关键字为cisco
router os 1
  network 192.1.1.1 0.0.0.0 area 0
  area 0 authentication

// R2 //
int e0/0
  ip ad 192.1.1.2 255.255.255.0
  ip ospf authentication-key cisco    //明文认证，关键字为cisco
int e1/0
  ip ad 193.1.1.2 255.255.255.0
  ip ospf message-digest-key 1 md5 cracker
router os 1
  network 192.1.1.2 0.0.0.0 area 0
  network 193.1.1.2 0.0.0.0 area 1
  area 0 authentication
  area 1 authentication message-digest

// R3 //
int e1/0
  ip ad 193.1.1.3 255.255.255.0
  ip ospf message-digest-key 1 md5 cracker
router os 1
  network 193.1.1.3 0.0.0.0 a 1
  area 1 authentication message-digest

r1#sh ip os int e0/0
Ethernet0/0 is up, line protocol is up
  Internet Address 192.1.1.1/24, Area 0
  Process ID 1, Router ID 192.1.1.1, Network Type BROADCAST, Cost: 10
  Transmit Delay is 1 sec, State BDR, Priority 1
  Designated Router (ID) 193.1.1.2, Interface address 192.1.1.2
  Backup Designated router (ID) 192.1.1.1, Interface address 192.1.1.1
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:06
  Index 1/1, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 193.1.1.2  (Designated Router)
  Suppress hello for 0 neighbor(s)
  Simple password authentication enabled
r2#sh ip os int e0/0
Ethernet0/0 is up, line protocol is up
  Internet Address 192.1.1.2/24, Area 0
  Process ID 1, Router ID 193.1.1.2, Network Type BROADCAST, Cost: 10
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 193.1.1.2, Interface address 192.1.1.2
  Backup Designated router (ID) 192.1.1.1, Interface address 192.1.1.1
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:04
  Index 1/1, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 2
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 192.1.1.1  (Backup Designated Router)
  Suppress hello for 0 neighbor(s)
  Simple password authentication enabled
r2#sh ip os int e1/0
Ethernet1/0 is up, line protocol is up
  Internet Address 193.1.1.2/24, Area 1
  Process ID 1, Router ID 193.1.1.2, Network Type BROADCAST, Cost: 10
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 193.1.1.2, Interface address 193.1.1.2
  Backup Designated router (ID) 193.1.1.3, Interface address 193.1.1.3
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:03
  Index 1/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 2, maximum is 2
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 193.1.1.3  (Backup Designated Router)
  Suppress hello for 0 neighbor(s)
  Message digest authentication enabled
    Youngest key id is 1
r3#sh ip os int e1/0
Ethernet1/0 is up, line protocol is up
  Internet Address 193.1.1.3/24, Area 1
  Process ID 1, Router ID 193.1.1.3, Network Type BROADCAST, Cost: 10
  Transmit Delay is 1 sec, State BDR, Priority 1
  Designated Router (ID) 193.1.1.2, Interface address 193.1.1.2
  Backup Designated router (ID) 193.1.1.3, Interface address 193.1.1.3
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:04
  Index 1/1, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 2
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 193.1.1.2  (Designated Router)
  Suppress hello for 0 neighbor(s)
  Message digest authentication enabled
    Youngest key id is 1