实验要求： 1 R6为isp,接口IP地址均为公有有地址；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P地址192.168.1.0/24,请合理分配; 3 R1,R2,R4,各有两个环回地址; 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 R6 telnet R5的公有IP地址时,实际登陆到R1上; 8 R4与R5正常通过1000M链路,故障时通过100M链路;
地址划分思路：先将每台路由器上的两个环回看作一个网段，即5个用户网段，然后再向后借一位；将整个拓扑每台路由器相连的链路看作一个骨干链路，而后借到30位，给相邻路由器的接口分配IP地址。
配置完底层IP和环回后建议测试相邻路由器之间的连通性，避免IP地址配置错误。
R1的配置
[r1]int g 0/0/0 [r1-GigabitEthernet0/0/0]ip ad 192.168.1.1 30 [r1-GigabitEthernet0/0/0]int g 0/0/1 [r1-GigabitEthernet0/0/1]ip ad 192.168.1.5 30 [r1-GigabitEthernet0/0/1]int l0 [r1-LoopBack0]ip ad 192.168.1.33 28 [r1-LoopBack0]int l1 [r1-LoopBack1]ip ad 192.168.1.49 28 （写路由时先写缺省路由） [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 [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 192.168.1.12 30 192.168.1.6 [r1]ip route-static 192.168.1.128 28 192.168.1.6 [r1]ip route-static 192.168.1.32 27 NULL 0 [r1]aaa [r1-aaa]local-user aaa privilege level 15 password cipher 123456 [r1-aaa]local-user aaa service-type telnet [r1-aaa]q [r1]user-interface vty 0 4 [r1-ui-vty0-4]authentication-mode aaa
看到缺省到未知网段是否为最佳选路，若是就不用手写静态，若不是就要手写静态路由进行补充。
R2的配置
[r2]int g 0/0/0 [r2-GigabitEthernet0/0/0]ip ad 192.168.1.2 30 [r2-GigabitEthernet0/0/0]int g 0/0/1 [r2-GigabitEthernet0/0/1]ip add 192.168.1.9 30 [r2-GigabitEthernet0/0/1]int l0 [r2-LoopBack0]ip ad 192.168.1.65 28 [r2-LoopBack0]int l1 [r2-LoopBack1]ip ad 192.168.1.81 28 [r2]ip route-static 0.0.0.0 0 192.168.1.10 [r2]ip route-static 192.168.1.128 28 192.168.1.10 [r2]ip route-static 192.168.1.128 28 192.168.1.1 [r2]ip route-static 192.168.1.4 30 192.168.1.1 [r2]ip route-static 192.168.1.32 27 192.168.1.1 [r2]ip route-static 192.168.1.64 27 NULL 0
R3的DHCP服务
[r3]dhcp enable [r3]ip pool haha [r3-ip-pool-haha]network 192.168.1.128 mask 28 [r3-ip-pool-haha]gateway-list 192.168.1.129 [r3-ip-pool-haha]dns-list 8.8.8.8
R4的浮动静态路由配置
[r4]int g 0/0/0 [r4-GigabitEthernet0/0/0]ip ad 192.168.1.10 30 [r4-GigabitEthernet0/0/0]int g 0/0/1 [r4-GigabitEthernet0/0/1]ip ad 192.168.1.14 30 [r4-GigabitEthernet0/0/1]int g 0/0/2 [r4-GigabitEthernet0/0/2]ip ad 192.168.1.17 30 [r4-GigabitEthernet0/0/2]int g 4/0/0 [r4-GigabitEthernet4/0/0]ip ad 192.168.1.21 30 [r4-GigabitEthernet4/0/0]int l0 [r4-LoopBack0]ip ad 192.168.1.97 28 [r4-LoopBack0]int l1 [r4-LoopBack1]ip ad 192.168.1.113 28 [r4]ip route-static 0.0.0.0 0 192.168.1.18 [r4]ip route-static 0.0.0.0 0 192.168.1.22 preference 70 [r4]ip route-static 192.168.1.64 27 192.168.1.9 [r4]ip route-static 192.168.1.128 28 192.168.1.13 [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 [r4]ip route-static 192.168.1.0 24 NULL 0
R5的配置（NAT技术）
[r5]int g 0/0/0 [r5-GigabitEthernet0/0/0]ip ad 192.168.1.18 30 [r5-GigabitEthernet0/0/0]int g 0/0/1 [r5-GigabitEthernet0/0/1]ip ad 12.0.0.1 24 [r5-GigabitEthernet0/0/1]int g 0/0/2 [r5-GigabitEthernet0/0/2]ip ad 192.168.1.22 30 [r5-GigabitEthernet0/0/2]int l0 [r5-LoopBack0]ip ad 192.168.1.145 28 [r5]ip route-static 0.0.0.0 0 12.0.0.2 [r5]ip route-static 192.168.1.0 24 192.168.1.17 [r5]ip route-static 192.168.1.0 24 192.168.1.21 preference 70 [r5]acl 2000 （EASYIP 允许私网访问公网） [r5-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255 [r5-acl-basic-2000]q [r5]int g 0/0/1 [r5-GigabitEthernet0/0/1]nat outbound 2000 [r5-GigabitEthernet0/0/1]q
标签：r4,静态,ip,route,GigabitEthernet0,192.168,static,实验,路由 From： https://www.cnblogs.com/wxy1787880204/p/17179211.html