WB1 6.15 OSPF Demand Circuit

R4:

interface Serial0/1
  ip ospf demand-circuit
!

下在一邊路由器後，另外一邊也會知道。

Rack1R4#show ip ospf interface serial 0/1
Serial0/1 is up, line protocol is up
  Internet Address 155.1.45.4/24, Area 0
  Process ID 1, Router ID 223.255.255.255, Network Type POINT_TO_POINT, Cost: 1
  Enabled by interface config, including secondary ip addresses 
  Configured as demand circuit.
  Run as demand circuit.
  DoNotAge LSA allowed.
  Transmit Delay is 1 sec, State POINT_TO_POINT
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    oob-resync timeout 40
    Hello due in 00:00:09
  Supports Link-local Signaling (LLS)
  Cisco NSF helper support enabled
  IETF NSF helper support enabled
  Index 2/3, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 6
  Last flood scan time is 0 msec, maximum is 4 msec
  Neighbor Count is 1, Adjacent neighbor count is 1    
  Adjacent with neighbor 150.1.5.5  (Hello suppressed)
  Suppress hello for 1 neighbor(s)
Rack1R4#


Rack1R4#show ip ospf neighbor
Neighbor ID     Pri   State           Dead Time   Address         Interface
150.1.5.5         0   FULL/  -           -        155.1.45.5      Serial0/1
150.1.5.5         0   FULL/  -        00:01:37    155.1.0.5       Serial0/0
150.1.1.1       100   FULL/BDR        00:00:32    155.1.146.1     FastEthernet0/1
150.1.6.6       255   FULL/DR         00:00:35    155.1.146.6     FastEthernet0/1
Rack1R4#


Rack1R5#show ip ospf interface serial 0/1
Serial0/1 is up, line protocol is up
  Internet Address 155.1.45.5/24, Area 0
  Process ID 1, Router ID 150.1.5.5, Network Type POINT_TO_POINT, Cost: 10000
  Enabled by interface config, including secondary ip addresses 
  Run as demand circuit.
  DoNotAge LSA allowed.
  Transmit Delay is 1 sec, State POINT_TO_POINT
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    oob-resync timeout 40
    Hello due in 00:00:08
  Supports Link-local Signaling (LLS)
  Cisco NSF helper support enabled
  IETF NSF helper support enabled
  Index 2/4, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 18
  Last flood scan time is 0 msec, maximum is 8 msec
  Neighbor Count is 1, Adjacent neighbor count is 1    
  Adjacent with neighbor 223.255.255.255  (Hello suppressed)
  Suppress hello for 1 neighbor(s)
Rack1R5#


Rack1R5#show ip ospf neighbor
Neighbor ID     Pri   State           Dead Time   Address         Interface
223.255.255.255   0   FULL/  -           -        155.1.45.4      Serial0/1
150.1.1.1         0   FULL/  -        00:01:37    155.1.0.1       Serial0/0
150.1.2.2         0   FULL/  -        00:01:37    155.1.0.2       Serial0/0
150.1.3.3         0   FULL/  -        00:01:37    155.1.0.3       Serial0/0
223.255.255.255   0   FULL/  -        00:01:37    155.1.0.4       Serial0/0
150.1.8.8         1   FULL/BDR        00:00:31    155.1.58.8      FastEthernet0/0
Rack1R5#