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一、静态路由背景

        静态路由指由网络管理员手动配置的路由条目，适用于对系统要求低的简单小型网络，与动态路由相比，其不能自适应网络变化，需人为干预。

二、实验拓扑

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实验说明：实验效果为每台设备可到达其它设备的loopback接口的IP

三、实验步骤

步骤一： 如图配置路由器的IP地址

对R1：

[R1]int lo 0
[R1-LoopBack0]ip address 1.1.1.1 32
[R1-LoopBack0]int g0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.1.1 24

对R2：

[R2]int lo0
[R2-LoopBack0]ip address 2.2.2.2 32
[R2-LoopBack0]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip address 192.168.1.2 24

对R3：

[R3]int lo0
[R3-LoopBack0]ip address 3.3.3.3 32
[R3-LoopBack0]int g0/0/0
[R3-GigabitEthernet0/0/0]ip address 192.168.1.3 24

对R4：

[R4]int lo0
[R4-LoopBack0]ip address 4.4.4.4 32
[R4-LoopBack0]int g0/0/0
[R4-GigabitEthernet0/0/0]ip address 192.168.1.4 24

步骤二：进行静态路由配置 

对R1：

[R1]ip route-static 2.2.2.2 32 192.168.1.2 
[R1]ip route-static 3.3.3.3 32 192.168.1.3 
[R1]ip route-static 4.4.4.4 32 192.168.1.4

对R2：

[R2]ip route-static 1.1.1.1 32 192.168.1.1 
[R2]ip route-static 3.3.3.3 32 192.168.1.3 
[R2]ip route-static 4.4.4.4 32 192.168.1.4

对R3：

[R3]ip route-static 1.1.1.1 32 192.168.1.1 
[R3]ip route-static 2.2.2.2 32 192.168.1.2 
[R3]ip route-static 4.4.4.4 32 192.168.1.4

对R4：

[R4]ip route-static 1.1.1.1 32 192.168.1.1
[R4]ip route-static 2.2.2.2 32 192.168.1.2 
[R4]ip route-static 3.3.3.3 32 192.168.1.3

四、验证：路由器的loopback接口可互相通信（这里以R1为例）

对R1:

[R1]ping 2.2.2.2 
  PING 2.2.2.2: 56  data bytes, press CTRL_C to break
    Reply from 2.2.2.2: bytes=56 Sequence=1 ttl=255 time=40 ms
    Reply from 2.2.2.2: bytes=56 Sequence=2 ttl=255 time=50 ms
    Reply from 2.2.2.2: bytes=56 Sequence=3 ttl=255 time=60 ms
    Reply from 2.2.2.2: bytes=56 Sequence=4 ttl=255 time=50 ms
    Reply from 2.2.2.2: bytes=56 Sequence=5 ttl=255 time=40 ms

  --- 2.2.2.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 40/48/60 ms

[R1]ping 3.3.3.3 
  PING 3.3.3.3: 56  data bytes, press CTRL_C to break
    Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=255 time=110 ms
    Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=255 time=30 ms
    Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=255 time=70 ms
    Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=255 time=50 ms
    Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=255 time=40 ms

  --- 3.3.3.3 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 30/60/110 ms

[R1]ping 4.4.4.4
  PING 4.4.4.4: 56  data bytes, press CTRL_C to break
    Reply from 4.4.4.4: bytes=56 Sequence=1 ttl=255 time=90 ms
    Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=255 time=50 ms
    Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=255 time=40 ms
    Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=255 time=60 ms
    Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=255 time=60 ms

  --- 4.4.4.4 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 40/60/90 ms