
- •Используемая топология
- •План адресации
- •1. Базовая конфигурация оборудования
- •2. Настроить адресацию оборудования согласно плана
- •3. Настроить протокол динамической маршрутизации ospf на dr-маршрутизаторе
- •4. Настроить протокол динамической маршрутизации ospf на bdr-маршрутизаторе
- •01:05:24: %Ospf-5-adjchg: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from loading to full, Loading Done
- •5. Настроить протокол динамической маршрутизации ospf на dRother-маршрутизаторе
- •01:20:31: %Ospf-5-adjchg: Process 1, Nbr 192.168.255.2 on FastEthernet0/1 from loading to full, Loading Done
- •01:20:31: %Ospf-5-adjchg: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from loading to full, Loading Done
- •6. Установить ospf Priority для изменения порядка dr/bdr/Drother
6. Установить ospf Priority для изменения порядка dr/bdr/Drother
Установить приоритет 100 для интерфейса Fa0/1 R1
R1(config)#interface FastEthernet 0/1
R1(config-if)#ip ospf priority 100
Установить приоритет 10 для интерфейса Fa0/1 R2
R2(config)#interface FastEthernet 0/1
R2(config-if)#ip ospf priority 10
Установить приоритет 0 для интерфейса Fa0/1 R3
R3(config)#interface FastEthernet 0/1
R3(config-if)#ip ospf priority 0
7. Отключить и включить интерфейсы маршрутизаторов для инициирования выборов
Отключить интерфейс Fa0/1 на R1
R1(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
02:06:26: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
02:06:26: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.2 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
Отключить интерфейс Fa0/1 на R2
R2(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
02:06:13: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
02:06:13: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.1 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
Отключить интерфейс Fa0/1 на R3
R3(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
02:06:47: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.2 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
02:06:47: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.1 on FastEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached
Включить интерфейс Fa0/1 на R1
R1(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
02:18:14: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.2 on FastEthernet0/1 from LOADING to FULL, Loading Done
02:18:26: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from LOADING to FULL, Loading Done
Включить интерфейс Fa0/1 на R2
R2(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
02:18:12: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.1 on FastEthernet0/1 from LOADING to FULL, Loading Done
02:18:24: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.3 on FastEthernet0/1 from LOADING to FULL, Loading Done
Включить интерфейс Fa0/1 на R3
R3(config-if)#shutdown
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
02:18:55: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.1 on FastEthernet0/1 from LOADING to FULL, Loading Done
02:18:55: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.255.2 on FastEthernet0/1 from LOADING to FULL, Loading Done
Используя команду show ip ospf interface , убедиться в изменении порядка DR/BDR/Drother
R1#show ip ospf interface
-----------------------------пропущено----------------------------
FastEthernet0/1 is up, line protocol is up
Internet address is 192.168.0.1/24, Area 0
Process ID 1, Router ID 192.168.255.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DR, Priority 100
Designated Router (ID) 192.168.255.1, Interface address 192.168.0.1
Backup Designated Router (ID) 192.168.255.2, Interface address 192.168.0.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:07
-----------------------------пропущено----------------------------
R2#show ip ospf interface
-----------------------------пропущено----------------------------
FastEthernet0/1 is up, line protocol is up
Internet address is 192.168.0.2/24, Area 0
Process ID 1, Router ID 192.168.255.2, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State BDR, Priority 10
Designated Router (ID) 192.168.255.1, Interface address 192.168.0.1
Backup Designated Router (ID) 192.168.255.2, Interface address 192.168.0.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:03
-----------------------------пропущено----------------------------
R3#show ip ospf interface
-----------------------------пропущено----------------------------
FastEthernet0/1 is up, line protocol is up
Internet address is 192.168.0.3/24, Area 0
Process ID 1, Router ID 192.168.255.3, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 192.168.255.1, Interface address 192.168.0.1
Backup Designated Router (ID) 192.168.255.2, Interface address 192.168.0.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:09