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
1、R6为ISP,只需对R6进行IP配置
2、R1-R5为局域网,对192.168.1.0/24进行合理的子网划分
3、分别在R1、R2、R4、R5上添加对应数量的环回接口,相当于每个接口连接一台PC端
4、在R3上配置DHCP,使其PC能过获取到地址
5、手工汇总,添加缺省路由,在汇总路由上添加空接口
6、在R5上配置NAT,使其R1-R5可访问到R6
7、talent远程登录
8、在R4上配置浮动静态路由
网段可分为骨干链路和五个大网段(需划分为八个网段(27位掩码))
所以将192.168.1.0/24划分为:
192.168.1.0/27 192.168.1.32/27 192.168.1.64/27 192.168.1.96/27
192.168.1.128/27 192.168.1.160/27 192.168.1.192/27 192.168.1.224/27
取第一个网段划分为骨干链路(需要六个网段,再往后移3位掩码):
192.168.1.0/30 192.168.1.4/30 192.168.1.8/30 192.168.1.12/30
192.168.1.16/30 192.168.1.20/30 192.168.1.24/30 192.168.1.28/30
取第二个到第六个网段划分对应路由的路由环路
R1--192.168.1.32/27 192.168.1.32/28 192.168.1.48/28
R2--192.168.1.64/27 192.168.1.64/28 192.168.1.80/28
R3--192.168.1.96/27
R4--192.168.1.128/27 192.168.1.128/28 192.168.1.144/28
R5--192.168.1.160/27
[AR1]interface g0/0/0
[AR1-GigabitEthernet0/0/0]ip address 192.168.1.1 30
[AR1]interface g0/0/1
[AR1-GigabitEthernet0/0/1]ip ad
[AR1-GigabitEthernet0/0/1]ip address 192.168.1.5 30
[AR1-GigabitEthernet0/0/1]int lo0
[AR1-LoopBack0]ip address 192.168.1.33 28
[AR1-LoopBack0]int lo1
[AR1-LoopBack1]ip ad
[AR1-LoopBack1]ip address 192.168.1.49 28
[AR1]ip route-static 192.168.1.16 30 192.168.1.2
[AR1]ip route-static 192.168.1.16 30 192.168.1.6
[AR1]ip route-static 192.168.1.128 27 192.168.1.2
[AR1]ip route-static 192.168.1.128 27 192.168.1.6
[AR2]int g0/0/0
[AR2-GigabitEthernet0/0/0]ip address 192.168.1.2 30
[AR2]int g0/0/1
[AR2-GigabitEthernet0/0/1]ip address 192.168.1.9 30
[AR2-GigabitEthernet0/0/1]int lo0
[AR2-LoopBack0]ip address 192.168.1.65 28
[AR2-LoopBack0]int lo1
[AR2-LoopBack1]ip address 192.168.1.81 28
[AR3]int g0/0/0
[AR3-GigabitEthernet0/0/0]ip address 192.168.1.6 30
[AR3]int g0/0/1
[AR3-GigabitEthernet0/0/1]ip ad
[AR3-GigabitEthernet0/0/1]ip address 192.168.1.13 30
[AR3]int g0/0/2
[AR3-GigabitEthernet0/0/2]ip address 192.168.1.97 27
[AR4]int g0/0/0
[AR4-GigabitEthernet0/0/0]ip address 192.168.1.10 30
[AR4]int g0/0/1
[AR4-GigabitEthernet0/0/1]ip address 192.168.1.14 30
[AR4-GigabitEthernet0/0/1]int g3/0/0
[AR4-GigabitEthernet3/0/0]ip address 192.168.1.17 30
[AR4-GigabitEthernet3/0/0]int g4/0/0
[AR4-GigabitEthernet4/0/0]ip address 192.168.1.21 30
[AR4-GigabitEthernet4/0/0]int lo0
[AR4-LoopBack0]ip address 192.168.1.129 28
[AR4-LoopBack0]int lo1
[AR4-LoopBack1]ip address 192.168.1.145 28
[AR5]int g0/0/0
[AR5-GigabitEthernet0/0/0]ip address 12.0.0.1 24
[AR5-GigabitEthernet0/0/0]int g0/0/1
[AR5-GigabitEthernet0/0/1]ip address 192.168.1.18 30
[AR5-GigabitEthernet0/0/1]int g0/0/2
[AR5-GigabitEthernet0/0/2]ip address 192.168.1.22 30
[AR5-GigabitEthernet0/0/2]int lo0
[AR5-LoopBack0]ip address 192.168.1.161 27
[AR6]int g0/0/0
[AR6-GigabitEthernet0/0/0]ip address 12.0.0.2 24
[AR6-GigabitEthernet0/0/0]int lo0
[AR6-LoopBack0]ip address 1.0.0.1 24
[AR3]dhcp enable
Info: The operation may take a few seconds. Please wait for a moment.done.
[AR3]ip pool r3
Info: It's successful to create an IP address pool.
[AR3-ip-pool-r3]network 192.168.1.96 mask 27
[AR3-ip-pool-r3]gateway-list 192.168.1.97
[AR3-ip-pool-r3]dns-list 114.114.114.114
[AR3-ip-pool-r3]int g0/0/2
[AR3-GigabitEthernet0/0/2]dhcp select global
开启PC1和PC2的DHCP,勾选自动获取DNS服务器地址,点击应用
使用ipconfig来查看是否获取到DHCP分配的IP地址
测试:
简化实验,关闭百兆接口,后面再开启
[AR4]int g4/0/0
[AR4-GigabitEthernet4/0/0]shutdown
[AR1]ip route-static 192.168.1.64 27 192.168.1.2
[AR1]ip route-static 192.168.1.8 30 192.168.1.2
[AR1]ip route-static 192.168.1.96 27 192.168.1.6
[AR1]ip route-static 192.168.1.12 30 192.168.1.6
# 缺省路由
[AR1]ip route-static 0.0.0.0 0 192.168.1.2
[AR1]ip route-static 0.0.0.0 0 192.168.1.6
[AR2]ip route-static 192.168.1.32 27 192.168.1.1
[AR2]ip route-static 192.168.1.4 30 192.168.1.1
[AR2]ip route-static 192.168.1.96 27 192.168.1.1
[AR2]ip route-static 192.168.1.96 27 192.168.1.10
[AR2]ip route-static 0.0.0.0 0 192.168.1.10
[AR3]ip route-static 192.168.1.0 30 192.168.1.5
[AR3]ip route-static 192.168.1.32 27 192.168.1.5
[AR3]ip route-static 192.168.1.64 27 192.168.1.5
[AR3]ip route-static 192.168.1.64 27 192.168.1.14
[AR3]ip route-static 0.0.0.0 0 192.168.1.14
[AR4]ip route-static 192.168.1.64 27 192.168.1.9
[AR4]ip route-static 192.168.1.0 27 192.168.1.9
[AR4]ip route-static 192.168.1.32 27 192.168.1.9
[AR4]ip route-static 192.168.1.32 27 192.168.1.13
[AR4]ip route-static 192.168.1.4 30 192.168.1.13
[AR4]ip route-static 192.168.1.96 27 192.168.1.13
[AR4]ip route-static 0.0.0.0 0 192.168.1.18
[AR4]ip route-static 0.0.0.0 0 192.168.1.22
浮动静态路由配置
[AR5]ip route-static 192.168.1.128 27 192.168.1.17
[AR5]ip route-static 192.168.1.64 27 192.168.1.17
[AR5]ip route-static 192.168.1.32 27 192.168.1.17
[AR5]ip route-static 192.168.1.96 27 192.168.1.17
[AR5]ip route-static 192.168.1.8 30 192.168.1.17
[AR5]ip route-static 192.168.1.0 30 192.168.1.17
[AR5]ip route-static 192.168.1.4 30 192.168.1.17
[AR5]ip route-static 192.168.1.12 30 192.168.1.17
[AR5]ip route-static 0.0.0.0 0 12.0.0.2
[AR5]acl 2000
[AR5-acl-basic-2000]rule p
[AR5-acl-basic-2000]rule permit s
[AR5-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[AR5-acl-basic-2000]int g0/0/1
[AR5-GigabitEthernet0/0/1]nat out
[AR5-GigabitEthernet0/0/1]nat outbound 2000
[AR1]ip route-static 192.168.1.32 27 null 0
[AR2]ip route-static 192.168.1.64 27 null 0
[AR3]ip route-static 192.168.1.96 27 null 0
[AR4]ip route-static 192.168.1.128 27 null 0
开启百兆接口,将百兆接口的优先级修改为61
[AR4]int g4/0/0
[AR4-GigabitEthernet4/0/0]undo shutdown
[AR4]ip route-static 0.0.0.0 0 192.168.1.22 preference 61
[AR5]ip route-static 192.168.1.0 255.255.255.252 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.4 255.255.255.252 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.8 255.255.255.252 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.12 255.255.255.252 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.32 255.255.255.224 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.64 255.255.255.224 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.96 255.255.255.224 192.168.1.21 pr 61
[AR5]ip route-static 192.168.1.128 255.255.255.224 192.168.1.21 pr 61
[AR1-aaa]local-user zz password cipher 123
Info: Add a new user.
[AR1-aaa]local-user zz service-type telnet
[AR1-aaa]user-interface vty 0 4
[AR1-ui-vty0-4]authentication-mode aaa
[AR5-GigabitEthernet0/0/1]nat server protocol tcp global current-interface 23 in
side 192.168.1.1 23
Warning:The port 23 is well-known port. If you continue it may cause function fa
ilure.
Are you sure to continue?[Y/N]:y