实验要求：
1、除R5的环回地址以固定外，整个其他所有的网段基于192. 168.1.0/24进行合理的IP地址划分
2、R1-R4每天路由器存在两个环回接口，用于模拟连接PC的网段;地址也在192.168.1.0/24这个网络范围内
3、R1-R4上不能直接编写到达5.5.5.0/24的静态路由，但依然可以访问
4，全网可达，尽量减少每台路由器，路由表条目的数量;避免环路出现
5 、R4与R5间，正常1000M链路通信，故障时自动改为100M
实验分析：
1） 首先找出有多少广播域，在配置路由网关
2) 改名（方便清晰）， 配置R1-R5的IP地址
3） 配置所有路由器环回地址
4）手动写静态路由
5）添加缺省路由
6）测试
- R1
IP配置
[R1]int LoopBack 0
[R1-LoopBack0]ip add 192.168.1.33 28
[R1-LoopBack0]int LoopBack 1
[R1-LoopBack1]ip add 192.168.1.49 28
[R1-LoopBack1]q
[R1]int g0/0/1
[R1-GigabitEthernet0/0/1]ip add 192.168.1.1 30
[R1-GigabitEthernet0/0/1]int g0/0/2
[R1-GigabitEthernet0/0/2]ip add 192.168.1.5 30
静态路由配置
[R1]ip route-static 192.168.1.64 27 192.168.1.2
[R1]ip route-static 192.168.1.8 30 192.168.1.2
[R1]ip route-static 192.168.1.96 27 192.168.1.6
[R1]ip route-static 192.168.1.12 30 192.168.1.6
[R1]ip route-static 192.168.1.128 27 192.168.1.2
[R1]ip route-static 192.168.1.128 27 192.168.1.6
[R1]ip route-static 192.168.1.16 30 192.168.1.6
[R1]ip route-static 192.168.1.16 30 192.168.1.2
- R2
IP配置
[R2]int LoopBack 0
[R2-LoopBack0]ip add 192.168.1.65 28
[R2-LoopBack0]int LoopBack 1
[R2-LoopBack1]ip add 192.168.1.81 28
[R2-LoopBack1]q
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.1.2 30
[R2-GigabitEthernet0/0/0]int g0/0/2
[R2-GigabitEthernet0/0/2]ip add 192.168.1.9 30
静态路由配置
[R2]ip route-static 192.168.1.32 27 192.168.1.1
[R2]ip route-static 192.168.1.4 30 192.168.1.1
[R2]ip route-static 192.168.1.128 27 192.168.1.10
[R2]ip route-static 192.168.1.12 30 192.168.1.10
[R2]ip route-static 192.168.1.16 30 192.168.1.10
[R2]ip route-static 192.168.1.96 27 192.168.1.10
[R2]ip route-static 192.168.1.96 27 192.168.1.1
- R3
IP配置
[R3]int LoopBack 0
[R3-LoopBack0]ip add 192.168.1.97 28
[R3-LoopBack0]int LoopBack 1
[R3-LoopBack1]ip add 192.168.1.113 28
[R3-LoopBack1]q
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.1.6 30
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 192.168.1.13 30
静态路由配置
[R3]ip route-static 192.168.1.32 27 192.168.1.5
[R3]ip route-static 192.168.1.0 30 192.168.1.5
[R3]ip route-static 192.168.1.128 27 192.168.1.14
[R3]ip route-static 192.168.1.8 30 192.168.1.14
[R3]ip route-static 192.168.1.16 30 192.168.1.14
[R3]ip route-static 192.168.1.64 27 192.168.1.5
[R3]ip route-static 192.168.1.64 27 192.168.1.14
- R4
IP配置
[R4]int LoopBack 0
[R4-LoopBack0]ip add 192.168.1.129 28
[R4-LoopBack0]int LoopBack 1
[R4-LoopBack1]ip add 192.168.1.145 28
[R4-LoopBack1]q
[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 192.168.1.10 30
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 192.168.1.14 30
[R4-GigabitEthernet0/0/1]int g0/0/2
[R4-GigabitEthernet0/0/2]ip add 192.168.1.17 30
[R4-GigabitEthernet0/0/2]int g4/0/0
[R4-GigabitEthernet4/0/0]ip add 192.168.1.21 30
静态路由配置
[R4]ip route-static 192.168.1.64 27 192.168.1.9
[R4]ip route-static 192.168.1.96 27 192.168.1.13
[R4]ip route-static 192.168.1.0 30 192.168.1.9
[R4]ip route-static 192.168.1.4 30 192.168.1.13
[R4]ip route-static 192.168.1.32 27 192.168.1.9
[R4]ip route-static 192.168.1.32 27 192.168.1.13
- R5
IP配置
[R5]int LoopBack 0
[R5-LoopBack0]ip add 5.5.5.1 24
[R5-LoopBack0]q
[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 192.168.1.18 30
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 192.168.1.22 30
静态路由配置
[5]ip route-static 192.168.1.32 27 192.168.1.17
[R5]ip route-static 192.168.1.64 27 192.168.1.17
[R5]ip route-static 192.168.1.96 27 192.168.1.17
[R5]ip route-static 192.168.1.128 27 192.168.1.1
[R5]ip route-static 192.168.1.0 30 192.168.1.17
[R5]ip route-static 192.168.1.4 30 192.168.1.17
[R5]ip route-static 192.168.1.8 30 192.168.1.17
[R5]ip route-static 192.168.1.12 30 192.168.1.17
-
ping他们之间的连通性
-
添加缺省路由
[R1]ip route-static 0.0.0.0 0 192.168.1.2
[R1]ip route-static 0.0.0.0 0 192.168.1.6
[R2]ip route-static 0.0.0.0 0 192.168.1.10
[R3]ip route-static 0.0.0.0 0 192.168.1.14
[R4]ip route-static 0.0.0.0 0 192.168.1.18
。。。。等讲了在写全后面