H3C-DHCP中继服务器（MAC地址绑定）

H3C-DHCP中继服务器前言一、实验拓扑二、配置需求三、配置步骤四、验证

当企业内部网络规模较大时，通常被划分为多个不同的子网，网络内配置了VLAN，VLAN隔离了广播，而DHCP协议使用广播。DHCP中继代理其可以实现再不同子网和物理网段之间处理和转发dhcp信息的功能。下面是用华三模拟器模拟DHC中继和MAC地址绑定的实验。

1.按图示配置IP地址、VLAN等基础配置。
2.DHCP 服务器能够通过核心为vlan10、vlan20的主机分配地址。
3.指定终端主机获取的IP地址，即MAC地址绑定。

1.基础配置：配置IP地址、vlan等配置；

DHCP服务器基础配置：
[DHCP-server]vlan 100
[DHCP-server-vlan100]int vlan 100
[DHCP-server-Vlan-interface100]ip add 192.168.100.254 24
[DHCP-server-Vlan-interface100]int g1/0/1
[DHCP-server-GigabitEthernet1/0/1]port access

核心交换机基础配置：
[HX]vlan 10
[HX-vlan10]vlan 20
[HX-vlan20]vlan 100
[HX-vlan100]int vlan 10
[HX-Vlan-interface10]ip add 192.168.10.1 24
[HX-Vlan-interface10]int vlan 20
[HX-Vlan-interface20]ip add 192.168.20.1 24
[HX-Vlan-interface20]int vlan 100
[HX-Vlan-interface100]ip add 192.168.100.1 24
[HX-Vlan-interface100]int g1/0/1
[HX-GigabitEthernet1/0/1]port link-type trunk
[HX-GigabitEthernet1/0/1]port trunk permit vlan 10 20 100
[HX-GigabitEthernet1/0/1]undo port trunk permit vlan 1

接入交换机配置：
[JR]vlan 10
[JR-vlan10]vlan 20
[JR-vlan20]vlan 100
[JR-vlan100]int g1/0/1
[JR-GigabitEthernet1/0/1]port link-type trunk
[JR-GigabitEthernet1/0/1]int g1/0/4
[JR-GigabitEthernet1/0/4]port access vlan 100
[JR-GigabitEthernet1/0/4]int g1/0/2
[JR-GigabitEthernet1/0/2]port access vlan 10
[JR-GigabitEthernet1/0/2]int g1/0/5
[JR-GigabitEthernet1/0/5]port access vlan 10
[JR-GigabitEthernet1/0/5]int g1/0/3
[JR-GigabitEthernet1/0/3]port access vlan 20
[JR-GigabitEthernet1/0/3]int g1/0/6
[JR-GigabitEthernet1/0/6]port access vlan 20

2.路由配置

DHCP服务器配置静态路由，是DHCP服务器与vlan10、vlan20网段互通；
[DHCP-server]ip route-static 192.168.10.0 24 192.168.100.1
[DHCP-server]ip route-static 192.168.20.0 24 192.168.100.1

3.DHCP 配置

DHCP服务器开启DHCP功能，并创建VLAN 10、VLAN 20的DHCP服务；
[DHCP-server]dhcp enable
[DHCP-server]dhcp server ip-pool vlan10
[DHCP-server-dhcp-pool-vlan10] gateway-list 192.168.10.254
[DHCP-server-dhcp-pool-vlan10] network 192.168.10.0 mask 255.255.255.0
[DHCP-server-dhcp-pool-vlan10] dns-list 114.114.114.114 8.8.8.8
[DHCP-server-dhcp-pool-vlan10]dhcp server ip-pool vlan20
[DHCP-server-dhcp-pool-vlan20] gateway-list 192.168.20.1
[DHCP-server-dhcp-pool-vlan20] network 192.168.20.0 mask 255.255.255.0
[DHCP-server-dhcp-pool-vlan20] dns-list 114.114.114.114 8.8.8.8

核心交换机开启DHCP和DHCP中继，并指定DHCP服务器的IP地址；
[HX]dhcp enable
[HX]int vlan 10
[HX-Vlan-interface10] dhcp select relay
[HX-Vlan-interface10] dhcp relay server-address 192.168.100.254
[HX-Vlan-interface10]interface Vlan-interface20
[HX-Vlan-interface20] dhcp select relay
[HX-Vlan-interface20] dhcp relay server-address 192.168.100.254

4.MAC地址绑定

DHCP服务器上配置MAC地址和IP地址绑定；
[DHCP-server]dhcp server ip-pool vlan10
[DHCP-server-dhcp-pool-vlan10]static-bind ip-address 192.168.10.100 mask 255.255.255.0 hardware-address 66b0-06bd-0306
[DHCP-server-dhcp-pool-vlan10]dhcp server ip-pool vlan20
[DHCP-server-dhcp-pool-vlan20]static-bind ip-address 192.168.20.100 mask 255.255.255.0 hardware-address 66b0-0886-0406

1.DHCP服务器上查看地址分配情况：
2.终端的地址分配有三种情况分别是Auto(C ）、static(C ）、static(F)

Auto(C):表示IP地址为终端自动获取；
static(C)：表示IP地址为静态绑定；
static(F)：无效静态绑定，终端已获取IP地址或终端不在线；#此例为终端已获取IP地址，只需让终端重新获取地址即可；

3.终端自动获取地址；