DHCP实验
DHCP(Dynamic Host Configuration Protocol)是一种网络协议,用于自动分配IP地址、子网掩码、网关和其他网络配置信息给网络中的设备。DHCP服务器负责管理和分配这些网络配置信息,使得网络设备可以在连接到网络时自动获得所需的网络配置,而无需手动配置。DHCP的作用是简化网络管理并提高网络的可扩展性。
- PC1 2界面点击DHCP,应用
- 路由器R1配置网关IP:
system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]
Please check whether system data has been changed, and save data in time
Configuration console time out, please press any key to log on
sys
Enter system view, return user view with Ctrl+Z.
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.1.254 24
[R1-GigabitEthernet0/0/0]
Mar 18 2025 23:11:20-08:00 R1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
- global模式:创建地址池,在地址池中分配
global
ip address-pool POOL_NAME start-ip END_IP end-ip END_IP
[R1]ip pool PC
Info: It’s successful to create an IP address pool.
[R1-ip-pool-PC]gateway-list 192.168.1.254
[R1-ip-pool-PC]network 192.168.1.0 mask 24
[R1]dhcp enable
[R1-GigabitEthernet0/0/0]dhcp select global
- interface模式:根据端口IP地址选择对应的网段
interface INTERFACE_NAME
ip address-pool POOL_NAME
- 右键R1选择抓包,接口0/0/0:将PC2设置为DHCP,在弹出界面查看PC1,2之间依次发送了DHCP DISCOVER,OFFER,REQUEST,ACK,最终PC2获得了IP .252.
随后用 ARP查询网段中是否有重复的IP252地址
- 接口方式配置DHCP:
[Huawei]sysname R1
[R1]sysname R2
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip address 192.168.2.254 24
Mar 18 2025 23:29:55-08:00 R2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[R2-GigabitEthernet0/0/0]
[R2-GigabitEthernet0/0/0]q
[R2]dhcp enable
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]dhcp select interface