一、实验拓扑

二、实验需求
1、R6为ISP,接口IP地址均为公有地址,该设备只能配置IP地址,之后不能再对其进行任何配置;
2、R1-R5为局域网,私有IP地址192.168.1.0/24,请合理分配;
3、R1、R2、R4,各有两个环回IP地址;R5,R6各有一个环回地址;所有路由器上环回均代表连接用户的接口;
4、R3下面的两台PC通过DHCP自动获取IP地址;
5、选路最佳,路由表尽量小,避免环路;
6、R1-R5均可以访问R6的环回;
7、在R1上配置telnet服务,使R6能通过R5的公有地址telnet到R1上;
8、R4与R5正常通过1000M链路,故障时通过100M链路;
三、实验步骤
1.先分别将路由器的ip地址和环回都添加上去
R1:
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.1.1 30
[R1]int g0/0/1
[R1-GigabitEthernet0/0/1]ip address 192.168.1.5 30
[R1]int LoopBack 0
[R1-LoopBack0]ip address 192.168.1.33 28
[R1]int LoopBack 1
[R1-LoopBack1]ip address 192.168.1.49 28
[R1]dis ip int brief

R2:
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip address 192.168.1.2 30
[R2]int g0/0/1
[R2-GigabitEthernet0/0/1]ip address 192.168.1.9 30
[R2]int LoopBack 0
[R2-LoopBack0]ip address 192.168.1.65 28
[R2]int LoopBack 1
[R2-LoopBack1]ip address 192.168.1.81 28
[R2]dis ip int brief

R3:
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip address 192.168.1.6 30
[R3]int g0/0/1
[R3-GigabitEthernet0/0/1]ip address 192.168.1.13 30
[R3]int g0/0/2
[R3-GigabitEthernet0/0/2]ip address 192.168.1.97 27

4、R3下面的两台PC通过DHCP自动获取IP地址;
在R3上:配置DHCP服务,创建地址池
[R3]dhcp enable #开启DHCP服务
[R3]ip pool aa #配置地址池名字
[R3-ip-pool-aa]network 192.168.1.96 mask 27 #配置地址池中的地址
[R3-ip-pool-aa]gateway-l

最低0.47元/天 解锁文章
2万+





