静态路由实现多网段通信

但是，当多个网段之间只有一条路径时，那么仅仅是配置静态路由就足够了。如果是在企业中工作，那么往往配置简单的静态路由就足够了。

为了更有说服力和便于理解我用CPT（Cisco Packet Tracer）演示了一下。

拓扑图如下图所示：

分别有四个网段，10.0.0.0/8、112.237.228.0/24、192.168.10.0/24、211.86.104.0/24。

静态路由设置如下：

1. ip route 192.168.10.0 255.255.255.0 112.237.228.1 2. ip route 211.86.104.0 255.255.255.0 112.237.228.1 3. 4.

5. ip route 10.0.0.0 255.0.0.0 112.237.228.244 6. ip route 211.86.104.0 255.255.255.0 192.168.10.1 7. 8.

9. ip route 112.237.228.0 255.255.255.0 192.168.10.2

10. ip route 10.0.0.0 255.0.0.0 192.168.10.2

配置如下：

1.PC0的IP配置：

Packet Tracer PC Command Line 1.0 PC>ipconfig

IP Address......................: 10.0.0.3 Subnet Mask.....................: 255.0.0.0 Default Gateway.................: 10.0.0.1

PC>

2.PC1的IP配置：

Packet Tracer PC Command Line 1.0 PC>ipconfig

IP Address......................: 211.86.104.52 Subnet Mask.....................: 255.255.255.0 Default Gateway.................: 211.86.104.254

PC>

3.R1的配置：

1. Router>enable

2. Router#configure terminal

3. Enter configuration commands, one per line. End with CNTL/Z. 4. Router(config)#hostname R1

5. R1(config)#interface FastEthernet0/1

6. R1(config-if)#ip address 10.0.0.1 255.0.0.0 7. R1(config-if)#no shutdown 8. 9.

10. %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up 11. R1(config-if)#end 12. R1#

13. %SYS-5-CONFIG_I: Configured from console by console 14.

15. R1#conf t

16. Enter configuration commands, one per line. End with CNTL/Z. 17. R1(config)#int f0/0

18. R1(config-if)#ip addr 112.237.228.244 255.255.255.0 19. R1(config-if)#no shutdown 20. 21.

22. %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up 23. R1(config-if)#end 24. R1#

25. %SYS-5-CONFIG_I: Configured from console by console 26. 27.

28. R1#conf t

29. Enter configuration commands, one per line. End with CNTL/Z. 30. R1(config)#ip route 192.168.10.0 255.255.255.0 112.237.228.1 31. R1(config)#ip route 211.86.104.0 255.255.255.0 112.237.228.1 32. R1(config)#end 33. R1#

34. %SYS-5-CONFIG_I: Configured from console by console 35. 36. R1#

4.R2的配置：

1. Router>enable

2. Router#configure terminal

3. Enter configuration commands, one per line. End with CNTL/Z. 4. Router(config)#hostname R2 5. R2(config)#

6. R2(config)#interface FastEthernet0/1

7. R2(config-if)#ip address 112.237.228.1 255.255.255.0 8. R2(config-if)#no shutdown 9. 10.

11. %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up 12. R2(config-if)# 13. R2(config-if)#exit

14. R2(config)#interface FastEthernet0/0

15. R2(config-if)#ip address 192.168.10.2 255.255.255.0 16. R2(config-if)#no shutdown 17. 18.

19. %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up 20. R2(config-if)#end 21. R2#conf t

22. Enter configuration commands, one per line. End with CNTL/Z. 23. R2(config)#ip route 10.0.0.0 255.0.0.0 112.237.228.244 24. R2(config)#ip route 211.86.104.0 255.255.255.0 192.168.10.1 25. R2(config)#end 26. R2#

27. %SYS-5-CONFIG_I: Configured from console by console 28. 29. R2#

5.R3的配置：

1. Router>enable

2. Router#configure terminal

3. Enter configuration commands, one per line. End with CNTL/Z. 4. Router(config)#hostname R3 5. R3(config)#

6. R3(config)#interface FastEthernet0/1

7. R3(config-if)#ip address 192.168.10.1 255.255.255.0 8. R3(config-if)#no shutdown 9. 10.

11. %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up 12. R3(config-if)# 13. R3(config-if)#exit

14. R3(config)#interface FastEthernet0/0

15. R3(config-if)#ip address 211.86.104.254 255.255.255.0 16. R3(config-if)#no shutdown

17.

18. R3(config-if)#

19. %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up 20. 21.

22. R3>enable 23. R3#conf t

24. Enter configuration commands, one per line. End with CNTL/Z. 25. R3(config)#ip route 112.237.228.0 255.255.255.0 192.168.10.2 26. R3(config)#ip route 10.0.0.0 255.0.0.0 192.168.10.2 27. R3(config)#end 28. R3#

29. %SYS-5-CONFIG_I: Configured from console by console 30. 31. R3# 32.

6.使用tracert进行测试：

测试从PC0能否路由到PC1。

结果表明测试成功。

测试从PC1能否路由到PC0。

结果表明测试成功。