通过DHCP获取IP地址，使相关PC可以互相访问

叁歲伎倆 2023-01-03 12:46 177阅读 0赞

## HCIA中关于DHCP的常见问题 ##

首先我们要了解何为DHCP  
DHCP服务 – 动态主机配置协议 统一分发管理ip地址；  
在网络中部署一台DHCP服务器，之后终端设备通过广播来寻找DHCP服务器获取ip地址即可  
成为DHCP服务器的条件：  
1、 该设备必须存在接口或网卡连接到所要下放地址的广播域内  
2、 该接口或网卡，必须已经拥有合法ip地址，且可以通信  
\[Huawei\]dhcp enable 先在设备上开启DHCP服务  
在设备上创建名为xiaoqiang的DHCP池塘，一台设备上可以创建多个池塘，但一个池塘只能服务一个广播域  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70]  
关于上图，我们要想实现PC5和PC6互相访问，先点击路由器，等待其连接好后，在其中输入  
system-view  
Enter system view, return user view with Ctrl+Z.  
\[Huawei\]interface GigabitEthernet 0/0/0  
\[Huawei-GigabitEthernet0/0/0\]ip address 192.168.1.1 255.255.255.0  
Jan 5 2021 21:10:16-08:00 Huawei %%01IFNET/4/LINK\_STATE(l)\[2\]:The line protocol  
IP on the interface GigabitEthernet0/0/0 has entered the UP state.  
\[Huawei-GigabitEthernet0/0/0\]q //返回上一步  
\[Huawei\]interface GigabitEthernet 0/0/1  
\[Huawei-GigabitEthernet0/0/1\]ip address 192.168.2.1 24  
Jan 5 2021 21:10:59-08:00 Huawei %%01IFNET/4/LINK\_STATE(l)\[3\]:The line protocol  
IP on the interface GigabitEthernet0/0/1 has entered the UP state.  
\[Huawei-GigabitEthernet0/0/1\]q  
\[Huawei\]dhcp enable  
Info: The operation may take a few seconds. Please wait for a moment.done.  
\[Huawei\]ip pool xianyu  
Info: It’s successful to create an IP address pool.  
\[Huawei-ip-pool-xianyu\]network 192.168.1.0 ma  
\[Huawei-ip-pool-xianyu\]network 192.168.1.0 mask 255.255.255.0  
\[Huawei-ip-pool-xianyu\]gateway-list 192.168.1.1  
\[Huawei-ip-pool-xianyu\]dns-list 114.114.114.114 8.8.8.8  
\[Huawei-ip-pool-xianyu\]q  
\[Huawei\]ip pool xianyu  
\[Huawei-ip-pool-xianyu\]q  
\[Huawei\]ip pool cangshu  
Info: It’s successful to create an IP address pool.  
\[Huawei-ip-pool-cangshu\]network 192.168.2.0 mask 255.255.255.0  
\[Huawei-ip-pool-cangshu\]gateway-list 192.168.2.1  
\[Huawei-ip-pool-cangshu\]dns-list 114.114.114.114 8.8.8.8  
\[Huawei-ip-pool-cangshu\]q  
\[Huawei\]interface GigabitEthernet 0/0/0  
\[Huawei-GigabitEthernet0/0/0\]dhcp select global  
\[Huawei-GigabitEthernet0/0/0\]q  
\[Huawei\]interface GigabitEthernet 0/0/1  
\[Huawei-GigabitEthernet0/0/1\]  
\[Huawei-GigabitEthernet0/0/1\]  
成功后在 PC段输入  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70 1]  
就配置成功了  
用PC5访问PC6  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70 2]  
成功访问  
要想访问右边借口，在路由器中输入  
sys  
system-view  
Enter system view, return user view with Ctrl+Z.  
\[Huawei\]int  
\[Huawei\]interface g  
\[Huawei\]interface GigabitEthernet 0/0/1  
\[Huawei-GigabitEthernet0/0/1\]dhcp se  
\[Huawei-GigabitEthernet0/0/1\]dhcp select g  
\[Huawei-GigabitEthernet0/0/1\]dhcp select global  
查看PC7中ip  
![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70 3][]  
配置成功  
用PC7访问PC8  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70 4]

用PC6访问PC8  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80ODE2NTIyNw_size_16_color_FFFFFF_t_70 5]  
实验成功

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