实验：OSPF高级配置（一）连通性目标实现

实验拓扑图如下：

拓扑连接详情：
Router1 F0/0 <----> Router2 F0/0
Router2 F1/0 <----> Router3 F0/0
Router3 F1/0 <----> Router4 F0/0
Router1 F1/0 <----> Router5 F0/0
Router5 F1/0 <----> Router6 F0/0
Router6 F1/0 <----> Router7 F0/0
根据拓扑图，设置接口IP。

拓扑图中有两个变量――X Y
一、当X=0，Y=1时，Area X为中转区域，Area Y为常规区域。
1.路由器设置
R1:
!
interface FastEthernet0/0
 ip address 192.168.10.1 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 ip address 192.168.1.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 log-adjacency-changes
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.10.0 0.0.0.255 area 0
!

R2:
!
interface FastEthernet0/0
 ip address 192.168.10.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 ip address 192.168.17.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 log-adjacency-changes
 network 192.168.10.0 0.0.0.255 area 0
 network 192.168.17.0 0.0.0.255 area 1
!

R3:
!
interface FastEthernet0/0
 ip address 192.168.17.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 ip address 192.168.30.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 log-adjacency-changes
 network 192.168.17.0 0.0.0.255 area 1
 network 192.168.30.0 0.0.0.255 area 1
!

R4:
!
interface FastEthernet0/0
 ip address 192.168.30.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
router ospf 1
 log-adjacency-changes
 network 192.168.30.0 0.0.0.255 area 1
!

R5:
!
interface FastEthernet0/0
 ip address 192.168.1.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 ip address 192.168.66.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 log-adjacency-changes
 redistribute rip metric 20
 network 192.168.1.0 0.0.0.255 area 0
!
router rip
 version 2
 redistribute ospf 1 metric 3
 network 192.168.66.0
 no auto-summary
!

R6:
!
interface FastEthernet0/0
 ip address 192.168.66.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 ip address 192.168.70.1 255.255.255.0
 duplex auto
 speed auto
!
router rip
 version 2
 network 192.168.66.0
 network 192.168.70.0
 no auto-summary
!

R7:
!
interface FastEthernet0/0
 ip address 192.168.70.2 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet1/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
router rip
 version 2
 network 192.168.70.0
 no auto-summary
!
1.1查看路由表信息
R4#sh ip route
Codes: 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

Gateway of last resort is not set

C    192.168.30.0/24 is directly connected, FastEthernet0/0
O IA 192.168.10.0/24 [110/3] via 192.168.30.1, 00:10:56, FastEthernet0/0
O E2 192.168.66.0/24 [110/20] via 192.168.30.1, 00:08:13, FastEthernet0/0
O    192.168.17.0/24 [110/2] via 192.168.30.1, 00:10:56, FastEthernet0/0
O IA 192.168.1.0/24 [110/4] via 192.168.30.1, 00:10:56, FastEthernet0/0
O E2 192.168.70.0/24 [110/20] via 192.168.30.1, 00:08:13, FastEthernet0/0

R7#sh ip route
Codes: 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

Gateway of last resort is not set

R    192.168.30.0/24 [120/4] via 192.168.70.1, 00:00:07, FastEthernet0/0
R    192.168.10.0/24 [120/4] via 192.168.70.1, 00:00:07, FastEthernet0/0
R    192.168.66.0/24 [120/1] via 192.168.70.1, 00:00:07, FastEthernet0/0
R    192.168.17.0/24 [120/4] via 192.168.70.1, 00:00:07, FastEthernet0/0
R    192.168.1.0/24 [120/4] via 192.168.70.1, 00:00:07, FastEthernet0/0
C    192.168.70.0/24 is directly connected, FastEthernet0/0
1.2查看OSPF LSDB
R1# sh ip ospf database

            OSPF Router with ID (192.168.10.1) (Process ID 1)

                Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.10.1    192.168.10.1    736         0x80000004 0x008AEB 2
192.168.17.1    192.168.17.1    789         0x80000003 0x00B19C 1
192.168.66.1    192.168.66.1    573         0x80000003 0x006E8F 1

                Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.1.1     192.168.10.1    735         0x80000001 0x000B2E
192.168.10.2    192.168.17.1    789         0x80000001 0x00D088

                Summary Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.17.0    192.168.17.1    816         0x80000001 0x009CA9
192.168.30.0    192.168.17.1    753         0x80000001 0x001721

                Type-5 AS External Link States
         
Link ID         ADV Router      Age         Seq#       Checksum Tag
192.168.66.0    192.168.66.1    573         0x80000001 0x007BCC 0
192.168.70.0    192.168.66.1    574         0x80000001 0x004FF4 0

R2#sh ip ospf database

            OSPF Router with ID (192.168.17.1) (Process ID 1)

                Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.10.1    192.168.10.1    762         0x80000004 0x008AEB 2
192.168.17.1    192.168.17.1    813         0x80000003 0x00B19C 1
192.168.66.1    192.168.66.1    599         0x80000003 0x006E8F 1

                Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.1.1     192.168.10.1    761         0x80000001 0x000B2E
192.168.10.2    192.168.17.1    813         0x80000001 0x00D088

                Summary Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.17.0    192.168.17.1    840         0x80000001 0x009CA9
192.168.30.0    192.168.17.1    778         0x80000001 0x001721

                Router Link States (Area 1)
         
Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.17.1    192.168.17.1    782         0x80000002 0x004002 1
192.168.30.1    192.168.30.1    757         0x80000004 0x00ED16 2
192.168.30.2    192.168.30.2    757         0x80000002 0x006F9C 1

                Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.17.2    192.168.30.1    784         0x80000001 0x00F838
192.168.30.2    192.168.30.2    758         0x80000001 0x0017FD

                Summary Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.1.0     192.168.17.1    809         0x80000001 0x0057FD
192.168.10.0    192.168.17.1    846         0x80000001 0x00E963

                Summary ASB Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.66.1    192.168.17.1    593         0x80000001 0x0071A0

                Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
192.168.66.0    192.168.66.1    600         0x80000001 0x007BCC 0
192.168.70.0    192.168.66.1    601         0x80000001 0x004FF4 0

R5#sh ip ospf database

            OSPF Router with ID (192.168.66.1) (Process ID 1)

                Router Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.10.1    192.168.10.1    802         0x80000004 0x008AEB 2
192.168.17.1    192.168.17.1    855         0x80000003 0x00B19C 1
192.168.66.1    192.168.66.1    638         0x80000003 0x006E8F 1

                Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.1.1     192.168.10.1    802         0x80000001 0x000B2E
192.168.10.2    192.168.17.1    855         0x80000001 0x00D088

                Summary Net Link States (Area 0)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.17.0    192.168.17.1    881         0x80000001 0x009CA9
192.168.30.0    192.168.17.1    819         0x80000001 0x001721

                Type-5 AS External Link States
         
Link ID         ADV Router      Age         Seq#       Checksum Tag
192.168.66.0    192.168.66.1    637         0x80000001 0x007BCC 0
192.168.70.0    192.168.66.1    638         0x80000001 0x004FF4 0

R4# sh ip ospf database

            OSPF Router with ID (192.168.30.2) (Process ID 1)

                Router Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum Link count
192.168.17.1    192.168.17.1    854         0x80000002 0x004002 1
192.168.30.1    192.168.30.1    826         0x80000004 0x00ED16 2
192.168.30.2    192.168.30.2    825         0x80000002 0x006F9C 1

                Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.17.2    192.168.30.1    853         0x80000001 0x00F838
192.168.30.2    192.168.30.2    825         0x80000001 0x0017FD

                Summary Net Link States (Area 1)

Link ID         ADV Router      Age         Seq#       Checksum
192.168.1.0     192.168.17.1    880         0x80000001 0x0057FD
192.168.10.0    192.168.17.1    917         0x80000001 0x00E963

                Summary ASB Link States (Area 1)
         
Link ID         ADV Router      Age         Seq#       Checksum
192.168.66.1    192.168.17.1    665         0x80000001 0x0071A0

                Type-5 AS External Link States

Link ID         ADV Router      Age         Seq#       Checksum Tag
192.168.66.0    192.168.66.1    672         0x80000001 0x007BCC 0
192.168.70.0    192.168.66.1    672         0x80000001 0x004FF4 0