思科模拟器CIsco Packet Tracer路由器上配置 DHCP

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1.技术目的
自动获取IP地址

2.拓扑图

3.配置PC
PC0和PC1自动获取IP地址


4.配置路由器各个接口的IP地址
Router0

Router>en
Router#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int f0/0
Router(config-if)#ip add 192.168.10.1 255.255.255.0
Router(config-if)#no shu

Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#int s2/0
Router(config-if)#ip add 12.1.1.1 255.255.255.0
Router(config-if)#no shu

Router1

Router>en
Router#config t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int s2/0
Router(config-if)#ip add 12.1.1.2 255.255.255.0
Router(config-if)#no shu

Router(config-if)#Interface f0/0
Router(config-if)#ip add 192.168.11.1 255.255.255.0
Router(config-if)#no shu

5.配置路由器的静态路由使得全网互通
Router0

Router(config)#ip route 192.168.11.0 255.255.255.0 12.1.1.2

Router1

Router(config)#ip route 192.168.10.0 255.255.255.0 12.1.1.1

6.配置DHCP
Router0

Router(config)#ip route 192.168.11.0 255.255.255.0 12.1.1.2
Router(config)#
Router(config)#ip dhcp pool pool1
Router(dhcp-config)#net
Router(dhcp-config)#network 192.168.10.0 255.255.255.0
Router(dhcp-config)#dns-server 218.2.135.1
Router(dhcp-config)#default-router 192.168.10.1
Router(dhcp-config)#exit
Router(config)#ip dhcp pool pool2
Router(dhcp-config)#net
Router(dhcp-config)#network 192.168.11.0 255.255.255.0
Router(dhcp-config)#dns-server 218.2.135.1
Router(dhcp-config)#default-router 192.168.11.1
Router(dhcp-config)#exit
Router(config)#ip dhcp excluded-address 192.168.10.1
Router(config)#no ip dhcp excluded-address 192.168.11.1

Router1（配置DHCP中继）

Router2(config-if)#ip helper-address 12.1.1.1

7.网络测试
如果两台PC自动获得了192.168.10.0/24和192.168.11.0/24的地址那就成功了，要是获得了一个169.254.0.0/16，那就说明哪里出问题了

8.给大家留个问题吧 如果用三层交换机代替路由器应该怎么做呢？