HCNA实验---配置基于接口地址池的DHCP

DHCP 动态主机配置协议

DHCP协议采用客户端/服务器的方式工作

与DHCP服务器建立连接的****4个阶段

发现阶段：DHCP客户端寻找DHCP服务器的阶段,客户端以广播的方式发送DHCP_Discover报文
提供阶段：DHCP服务器提供IP地址的阶段，向客户端发送包含出租IP地址和其他设置的DHCP_Offer报文
选择阶段：DCHP客户端选择IP地址的阶段，客户端只能接受第一个收到的DHCP_Offer报文，然后以广播方式向各DHCP服务器回应DHCP_Request报文
确认阶段：DHCP服务器确认所提供IP地址的阶段，向客户端发送包含它所提供的IP地址和其设置的DHCP_ACK确认报文

配置基于接口地址池的DHCP拓扑图

HCNA实验

配置R1路由器

system-view //进入配置模式
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname DHCP //修改名称
[DHCP]interface GigabitEthernet 0/0/0 //进入接口
[DHCP-GigabitEthernet0/0/0]ip address 192.168.01.254 24 // 设置接口IP地址
May 28 2019 17:55:39-05:13 DHCP %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[DHCP-GigabitEthernet0/0/0]
[DHCP-GigabitEthernet0/0/0]interface GigabitEthernet 0/0/1 // 进入接口
[DHCP-GigabitEthernet0/0/1]ip address 192.168.2.254 24 //设置接口IP地址
[DHCP-GigabitEthernet0/0/1]
May 28 2019 17:56:06-05:13 DHCP %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP
on the interface GigabitEthernet0/0/1 has entered the UP state.
[DHCP-GigabitEthernet0/0/1]quit

[DHCP]dhcp enable //开启dhcp服务
Info: The operation may take a few seconds. Please wait for a moment.done.
[DHCP]interface GigabitEthernet 0/0/0 //进入接口
[DHCP-GigabitEthernet0/0/0]dhcp select interface //开启接口dhcp服务功能，指定从接口地址池分配地址

[DHCP-GigabitEthernet0/0/0]dhcp server lease day 2 //设置服务器接口地址池中IP地址的租用有效期限为2天，默认为1天

[DHCP-GigabitEthernet0/0/0]dhcp server excluded-ip-address 192.168.1.1 192.168.1.10
[DHCP-GigabitEthernet0/0/0]interface GigabitEthernet 0/0/1
[DHCP-GigabitEthernet0/0/1]dhcp select interface

[DHCP-GigabitEthernet0/0/1]dhcp server dns-list 8.8.8.8

HCNA实验