DHCP配置参数说明-阿里云开发者社区

DHCP配置参数说明

2023-05-23 73

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简介： DHCP配置参数说明

DHCP配置参数说明】

实验拓扑搭建

从DHCP自动获取IP地址的方法：

1、创建DHCP地址池

2、在端口下创建接口DHCP

在端口下创建接口DHCP：

SW1配置参数

[SW1]vlan batch 10 20
[SW1]interface Ethernet0/0/1
[SW1-Ethernet0/0/1]display this 
#
interface Ethernet0/0/1
 port link-type access
 port default vlan 10
#
return
[SW1-Ethernet0/0/1]quit
[SW1]interface Ethernet0/0/2
[SW1-Ethernet0/0/2]dis thi
#
interface Ethernet0/0/2
 port link-type access
 port default vlan 20
#
return
[SW1-Ethernet0/0/2]quit
[SW1]interface GigabitEthernet 0/0/1
[SW1-GigabitEthernet0/0/1]dis thi
#
interface GigabitEthernet0/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
#
return
[SW1-GigabitEthernet0/0/1]

AR1参数配置

[AR1]dhcp enable //全局开启DHCP服务
[AR1]interface GigabitEthernet 0/0/0.1
[AR1-GigabitEthernet0/0/0.1]display this 
[V200R003C00]
#
interface GigabitEthernet0/0/0.1
 dot1q termination vid 10
 ip address 10.1.1.254 255.255.255.0 
 arp broadcast enable
 dhcp select interface  //开启接口DHCP服务功能
 dhcp server excluded-ip-address 10.1.1.1 //排除DHCP自动获取的IP地址 （排除服务器IP地址、网关IP地址）
 dhcp server lease day 2 hour 2 minute 2 //设置DHCP最少租用时间（租约时间）
 dhcp server dns-list 202.99.192.68 （获取DNS，网关，网段）
#
return
[AR1-GigabitEthernet0/0/0.1]quit
[AR1]interface GigabitEthernet 0/0/0.2
[AR1-GigabitEthernet0/0/0.2]display this 
[V200R003C00]
#
interface GigabitEthernet0/0/0.2
 dot1q termination vid 20
 ip address 20.1.1.254 255.255.255.0 
 arp broadcast enable
 dhcp select interface
 dhcp server excluded-ip-address 20.1.1.1 
 dhcp server lease day 2 hour 2 minute 2 
 dhcp server dns-list 202.99.192.68 
#
return
[AR1-GigabitEthernet0/0/0.2]

Pc1从接口DHCP自动获取IP地址的数据报文过程

创建全局DHCP（创建DHCP地址池）

AR1参数配置及说明

[AR1]dhcp enable //使能DHCP功能，在配置DHCP服务器时必须先执行该命令，才能配置DHCP的其他功能并生效
[AR1]ip pool IT //设置一个名为IT的全局地址池
Info: It's successful to create an IP address pool.
[AR1-ip-pool-IT]gateway-list 10.1.1.254 //设置分配的网关IP
[AR1-ip-pool-IT]network 10.1.1.0 mask 255.255.255.0 //设置分配的地址网段
[AR1-ip-pool-IT]excluded-ip-address 10.1.1.253 //设置不参与自动分配的IP地址范围
[AR1-ip-pool-IT]lease day 2 hour 2 minute 2 //设置地址池中的租用有效期限，默认为1天
[AR1-ip-pool-IT]dns-list 202.99.99.99 //设置分配的DNS服务器地址
[AR1-ip-pool-IT]display this 
[V200R003C00]
#
ip pool IT
 gateway-list 10.1.1.254 
 network 10.1.1.0 mask 255.255.255.0 
 excluded-ip-address 10.1.1.253
 lease day 2 hour 2 minute 2 
 dns-list 202.99.99.99 
#
return
[AR1-ip-pool-IT]quit
[AR1]ip pool HR
[AR1-ip-pool-HR]dis thi
[V200R003C00]
#
ip pool HR
 gateway-list 20.1.1.254 
 network 20.1.1.0 mask 255.255.255.0 
 excluded-ip-address 20.1.1.253
 lease day 2 hour 2 minute 2 
 dns-list 202.99.99.99 
#
return
[AR1-ip-pool-HR]quit
[AR1]interface GigabitEthernet 0/0/0.1
[AR1-GigabitEthernet0/0/0.1]dhcp select global  //接口下使能全局方式分配地址
Warning: There are IP addresses allocated in the pool. Are you sure to delete the pool?[Y/N]:y
[AR1-GigabitEthernet0/0/0.1]dis thi
[V200R003C00]
#
interface GigabitEthernet0/0/0.1
 dot1q termination vid 10
 ip address 10.1.1.254 255.255.255.0 
 arp broadcast enable
 dhcp select global
#
return
[AR1-GigabitEthernet0/0/0.1]quit
[AR1]interface GigabitEthernet 0/0/0.2
[AR1-GigabitEthernet0/0/0.2]dhcp select global  //接口下使能全局方式分配地址
Warning: There are IP addresses allocated in the pool. Are you sure to delete the pool?[Y/N]:y
[AR1-GigabitEthernet0/0/0.2]display this 
[V200R003C00]
#
interface GigabitEthernet0/0/0.2
 dot1q termination vid 20
 ip address 20.1.1.254 255.255.255.0 
 arp broadcast enable
 dhcp select global
#
return
[AR1-GigabitEthernet0/0/0.2]quit