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使用4条静态路由实现全网互通的实验
这是一个采用4台路由器组成一个环形网络的默认路由实验,目的是为了实现4条静态路由器,并且全网实现互联互通。下面是拓扑图、简单说明和全部配置:
1:网络拓扑如下
实验要求:使用4条静态路由使得全网互通。
具体配置如下:
R0路由器
- r0#show running-config
- hostname r0
- interface Loopback0
- ip address 5.5.5.5 255.255.255.0
- !
- interface FastEthernet0/0
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface FastEthernet0/1
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface Serial0/0/0
- ip address 1.1.1.1 255.255.255.252
- clock rate 9600
- !
- interface Serial0/0/1
- ip address 4.4.4.2 255.255.255.252
- clock rate 9600
- !
- interface Vlan1
- no ip address
- shutdown
- !
- ip classless
- ip route 0.0.0.0 0.0.0.0 1.1.1.2
- line con 0
- line vty 0 4
- login
- r0#show ip route
- Codes: C - connected, S - static, I - IGRP, 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, E - EGP
- i - IS-IS, 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 1.1.1.2 to network 0.0.0.0
- 1.0.0.0/30 is subnetted, 1 subnets
- C 1.1.1.0 is directly connected, Serial0/0/0
- 4.0.0.0/30 is subnetted, 1 subnets
- C 4.4.4.0 is directly connected, Serial0/0/1
- 5.0.0.0/24 is subnetted, 1 subnets
- C 5.5.5.0 is directly connected, Loopback0
- S* 0.0.0.0/0 [1/0] via 1.1.1.2
- r0#
R1路由器
- r1#show running-config
- hostname r1
- interface Loopback0
- ip address 6.6.6.6 255.255.255.0
- !
- interface FastEthernet0/0
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface FastEthernet0/1
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface Serial0/0/0
- ip address 1.1.1.2 255.255.255.252
- !
- interface Serial0/0/1
- ip address 2.2.2.1 255.255.255.252
- clock rate 9600
- !
- interface Vlan1
- no ip address
- shutdown
- !
- ip classless
- ip route 0.0.0.0 0.0.0.0 2.2.2.2
- line con 0
- line vty 0 4
- login
- !
- r1#show ip route
- Codes: C - connected, S - static, I - IGRP, 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, E - EGP
- i - IS-IS, 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 2.2.2.2 to network 0.0.0.0
- 1.0.0.0/30 is subnetted, 1 subnets
- C 1.1.1.0 is directly connected, Serial0/0/0
- 2.0.0.0/30 is subnetted, 1 subnets
- C 2.2.2.0 is directly connected, Serial0/0/1
- 6.0.0.0/24 is subnetted, 1 subnets
- C 6.6.6.0 is directly connected, Loopback0
- http://www.xiaoxiongboke.com
- S* 0.0.0.0/0 [1/0] via 2.2.2.2
- r1#
R2路由器
- r2#show running-config
- hostname r2
- interface Loopback0
- ip address 7.7.7.7 255.255.255.0
- !
- interface FastEthernet0/0
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface FastEthernet0/1
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface Serial0/0/0
- ip address 2.2.2.2 255.255.255.252
- !
- interface Serial0/0/1
- ip address 3.3.3.1 255.255.255.252
- !
- interface Vlan1
- no ip address
- shutdown
- !
- ip classless
- ip route 0.0.0.0 0.0.0.0 3.3.3.2
- line con 0
- line vty 0 4
- login
- !
- !
- !
- end
- r2#show ip route
- Codes: C - connected, S - static, I - IGRP, 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, E - EGP
- i - IS-IS, 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 3.3.3.2 to network 0.0.0.0
- 2.0.0.0/30 is subnetted, 1 subnets
- C 2.2.2.0 is directly connected, Serial0/0/0
- 3.0.0.0/30 is subnetted, 1 subnets
- C 3.3.3.0 is directly connected, Serial0/0/1
- 7.0.0.0/24 is subnetted, 1 subnets
- C 7.7.7.0 is directly connected, Loopback0
- S* 0.0.0.0/0 [1/0] via 3.3.3.2
- r2#
R3路由器
- r3#show running-config
- hostname r3
- interface Loopback0
- ip address 8.8.8.8 255.255.255.0
- !
- interface FastEthernet0/0
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface FastEthernet0/1
- no ip address
- duplex auto
- speed auto
- shutdown
- !
- interface Serial0/0/0
- ip address 4.4.4.1 255.255.255.252
- !
- interface Serial0/0/1
- ip address 3.3.3.2 255.255.255.252
- clock rate 9600
- !
- interface Vlan1
- no ip address
- shutdown
- !
- ip classless
- ip route 0.0.0.0 0.0.0.0 4.4.4.2
- line con 0
- line vty 0 4
- login
- !
- !
- !
- end
- r3#show ip route
- Codes: C - connected, S - static, I - IGRP, 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, E - EGP
- i - IS-IS, 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 4.4.4.2 to network 0.0.0.0
- 3.0.0.0/30 is subnetted, 1 subnets
- C 3.3.3.0 is directly connected, Serial0/0/1
- 4.0.0.0/30 is subnetted, 1 subnets
- C 4.4.4.0 is directly connected, Serial0/0/0
- 8.0.0.0/24 is subnetted, 1 subnets
- C 8.8.8.0 is directly connected, Loopback0
- S* 0.0.0.0/0 [1/0] via 4.4.4.2
测试:用r0路由器ping r3路由器上的8.8.8.8
- r0#ping 8.8.8.8
- Type escape sequence to abort.
- Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
- !!!!!
- Success rate is 100 percent (5/5), round-trip min/avg/max = 62/62/63 ms
- r0#traceroute 8.8.8.8//追踪数据包的走向
- Type escape sequence to abort.
- Tracing the route to 8.8.8.8
- 1 1.1.1.2 31 msec 31 msec 32 msec
- 2 3.3.3.1 63 msec 47 msec 63 msec
- 3 3.3.3.2 63 msec 62 msec 62 msec
- r0#
实验总结:默认路由会给我们带来意想不到的好处。