CCNA课程实验-09-OSPF_Multi_Area

实验条件

网络拓朴

需求

1. PC1在LAN1中，PC2在LAN2中，使用OSPF路由协议实现两个LAN中的PC能够通信，OSPF进程 ID 89，R1的Router ID为1.1.1.1，R2的Router ID为2.2.2.2，R3的Router ID为3.3.3.3；

配置实现

配置OSPF多区域

PC1在LAN1中，PC2在LAN2中，使用OSPF路由协议实现两个LAN中的PC能够通信，OSPF进程 ID 89，R1的Router ID为1.1.1.1，R2的Router ID为2.2.2.2，R3的Router ID为3.3.3.3；

配置OSPF路由协议

配置PC1 & PC2

PC1(config)#no ip route
PC1(config)#int e0/0
PC1(config-if)#ip address 192.168.10.1 255.255.255.0
PC1(config-if)#no shutdown
PC1(config-if)#exit
PC1(config)#ip default-gateway 192.168.10.254
PC1(config)#


PC2(config)#no ip route
PC2(config)#int e0/1
PC2(config-if)#ip address 192.168.20.1 255.255.255.0
PC2(config-if)#no shutdown
PC2(config-if)#exit
PC2(config)#ip default-gateway 192.168.20.254
PC2(config)#

配置R1

R1(config)#int e0/0
R1(config-if)#ip address 192.168.10.254 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#int e0/1 
R1(config-if)#ip address 12.1.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#router ospf 89
R1(config-router)#router-id 1.1.1.1
R1(config-router)#network 12.1.1.1 0.0.0.0 area 0
R1(config-router)#network 192.168.10.254 0.0.0.0 area 1
R1(config-router)#exit

配置R2

R2(config)#int e0/1
R2(config-if)#ip address 12.1.1.2 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#int e0/0
R2(config-if)#ip address 23.1.1.2 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#router ospf 89
R2(config-router)#router-id 2.2.2.2
R2(config-router)#network 12.1.1.2 0.0.0.0 area 0
R2(config-router)#network 23.1.1.2 0.0.0.0 area 0
R2(config-router)#end

配置R3

R3(config)#int e0/1
R3(config-if)#ip address 192.168.20.254 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#int e0/0
R3(config-if)#ip address 23.1.1.3 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#router ospf 89
R3(config-router)#router-id 3.3.3.3 
R3(config-router)#network 23.1.1.3 0.0.0.0 area 0
R3(config-router)#network 192.168.20.254 0.0.0.0 area 2

三台交换机路由表经过一段时间自动生成.如下

R1路由表

R1#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override, p - overrides from PfR

Gateway of last resort is not set

      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.1.1.0/24 is directly connected, Ethernet0/1
L        12.1.1.1/32 is directly connected, Ethernet0/1
      23.0.0.0/24 is subnetted, 1 subnets
O        23.1.1.0 [110/20] via 12.1.1.2, 00:09:46, Ethernet0/1
      192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.10.0/24 is directly connected, Ethernet0/0
L        192.168.10.254/32 is directly connected, Ethernet0/0
O IA  192.168.20.0/24 [110/30] via 12.1.1.2, 00:02:29, Ethernet0/1
R1#

R2路由表

R2#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override, p - overrides from PfR

Gateway of last resort is not set

      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.1.1.0/24 is directly connected, Ethernet0/1
L        12.1.1.2/32 is directly connected, Ethernet0/1
      23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        23.1.1.0/24 is directly connected, Ethernet0/0
L        23.1.1.2/32 is directly connected, Ethernet0/0
O IA  192.168.10.0/24 [110/20] via 12.1.1.1, 00:12:53, Ethernet0/1
O IA  192.168.20.0/24 [110/20] via 23.1.1.3, 00:03:37, Ethernet0/0
R2#

R3路由表

R3#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       a - application route
       + - replicated route, % - next hop override, p - overrides from PfR

Gateway of last resort is not set

      12.0.0.0/24 is subnetted, 1 subnets
O        12.1.1.0 [110/20] via 23.1.1.2, 00:04:37, Ethernet0/0
      23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        23.1.1.0/24 is directly connected, Ethernet0/0
L        23.1.1.3/32 is directly connected, Ethernet0/0
O IA  192.168.10.0/24 [110/30] via 23.1.1.2, 00:04:37, Ethernet0/0
      192.168.20.0/24 is variably subnetted, 2 subnets, 2 masks
C        192.168.20.0/24 is directly connected, Ethernet0/1
L        192.168.20.254/32 is directly connected, Ethernet0/1
R3#

OSPF信息

R1

R1#show ip ospf 89 
 Routing Process "ospf 89" with ID 1.1.1.1
 Start time: 00:42:34.770, Time elapsed: 00:24:31.796
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Supports area transit capability
 Supports NSSA (compatible with RFC 3101)
 Supports Database Exchange Summary List Optimization (RFC 5243)
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 EXCHANGE/LOADING adjacency limit: initial 300, process maximum 300
 Number of external LSA 0. Checksum Sum 0x000000
 Number of opaque AS LSA 0. Checksum Sum 0x000000
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 2. 2 normal 0 stub 0 nssa
 Number of areas transit capable is 0
 External flood list length 0
 IETF NSF helper support enabled
 Cisco NSF helper support enabled
 Reference bandwidth unit is 100 mbps
    Area BACKBONE(0)
        Number of interfaces in this area is 1
        Area has no authentication
        SPF algorithm last executed 00:11:37.702 ago
        SPF algorithm executed 9 times
        Area ranges are
        Number of LSA 7. Checksum Sum 0x03E80F
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 1
        Number of interfaces in this area is 1
        Area has no authentication
        SPF algorithm last executed 00:22:50.204 ago
        SPF algorithm executed 4 times
        Area ranges are
        Number of LSA 4. Checksum Sum 0x01482A
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

R1#

R2

R2#show ip ospf 89
 Routing Process "ospf 89" with ID 2.2.2.2
 Start time: 00:50:41.802, Time elapsed: 00:17:06.531
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Supports area transit capability
 Supports NSSA (compatible with RFC 3101)
 Supports Database Exchange Summary List Optimization (RFC 5243)
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 EXCHANGE/LOADING adjacency limit: initial 300, process maximum 300
 Number of external LSA 0. Checksum Sum 0x000000
 Number of opaque AS LSA 0. Checksum Sum 0x000000
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
 Number of areas transit capable is 0
 External flood list length 0
 IETF NSF helper support enabled
 Cisco NSF helper support enabled
 Reference bandwidth unit is 100 mbps
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        Area has no authentication
        SPF algorithm last executed 00:12:18.762 ago
        SPF algorithm executed 11 times
        Area ranges are
        Number of LSA 7. Checksum Sum 0x03E80F
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

R2# 

R3

R3#show ip ospf   
 Routing Process "ospf 89" with ID 3.3.3.3
 Start time: 00:54:43.837, Time elapsed: 00:13:33.889
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Supports area transit capability
 Supports NSSA (compatible with RFC 3101)
 Supports Database Exchange Summary List Optimization (RFC 5243)
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an area border router
 Router is not originating router-LSAs with maximum metric
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 EXCHANGE/LOADING adjacency limit: initial 300, process maximum 300
 Number of external LSA 0. Checksum Sum 0x000000
 Number of opaque AS LSA 0. Checksum Sum 0x000000
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 2. 2 normal 0 stub 0 nssa
 Number of areas transit capable is 0
 External flood list length 0
 IETF NSF helper support enabled
 Cisco NSF helper support enabled
 Reference bandwidth unit is 100 mbps
    Area BACKBONE(0)
        Number of interfaces in this area is 1
        Area has no authentication
        SPF algorithm last executed 00:07:35.912 ago
        SPF algorithm executed 4 times
        Area ranges are
        Number of LSA 7. Checksum Sum 0x03E80F
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0
    Area 2
        Number of interfaces in this area is 1
        Area has no authentication
        SPF algorithm last executed 00:06:50.472 ago
        SPF algorithm executed 3 times
        Area ranges are
        Number of LSA 4. Checksum Sum 0x01CA82
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

R3#

测试网络

PC1#ping 192.168.20.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 2/2/4 ms
PC1#ping 23.1.1.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 23.1.1.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
PC1#ping 23.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 23.1.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
PC1#ping 12.1.1.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.1.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
PC1#ping 192.168.10.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.10.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
PC1#ping 12.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
PC1#