1、如图1所示，SwitchA应用为DHCP服务器SwitchB和SwitchC为用户接入交换机，用户通过向SwitchA请求DHCP服务
2、DHCP服务器的配置思路如下：
3、启动公司网络内SwitchA的DHCP服务器功能。在Switch上创建地址池并配置地址池的相关属性，如地址池范围、出口网关、NetBIOS地址、地址租用期限等，准备提供给客户端。配置VLANIF接口下本地DHCP服务器的地址分配方式，DHCP服务器从全局地址池中给客户端分配IP地址。
4、启动DHCP服务。<Quidway> system-view[Quidway] dhcp enable
5、创建地址池并配置相关属性。# 配置IP地址池1的属性（地址池范围、DNS地址、出口网关和地址池租期）。[Quidway] ip pool 1[Quidway-ip-pool-1] network 10.1.1.0 mask 255.255.255.128[Quidway-ip-pool-1] dns-list 10.1.1.2[Quidway-ip-pool-1] gateway-list 10.1.1.126[Quidway-ip-pool-1] excluded-ip-address 10.1.1.2[Quidway-ip-pool-1] excluded-ip-address 10.1.1.4[Quidway-ip-pool-1] lease day 10[Quidway-ip-pool-1] quit
6、# 配置IP地址池2的属性（地址池范围、DNS地址、出口网关、NetBOIS地址和地址池租期）[Quidway] ip pool 2[Quidway-ip-pool-2] network 10.1.1.128 mask 255.255.255.128[Quidway-ip-pool-2] dns-list 10.1.1.2[Quidway-ip-pool-2] nbns-list 10.1.1.4[Quidway-ip-pool-2] gateway-list 10.1.1.254[Quidway-ip-pool-2] lease day 2[Quidway-ip-pool-2] quit
7、配置VLANIF接口下地址分配方式。# 配置接口Eth 0/0/1和Eth 0/0/2分别加入相应的VLAN。[Quidway] vlan batch 10 20[Quidway] interface ethernet 0/0/1[Quidway-Ethernet0/0/1] port hybrid pvid vlan 10[Quidway-Ethernet0/0/1] port hybrid untagged vlan 10[Quidway-Ethernet0/0/1] quit[Quidway] interface ethernet 0/0/2[Quidway-Ethernet0/0/2] port hybrid pvid vlan 20[Quidway-Ethernet0/0/2] port hybrid untagged vlan 20[Quidway-Ethernet0/0/2] quit
8、# 配置VLANIF10接口下的客户端从全局地址池中获取IP地址。[Quidway] interface vlanif 10[Quidway-Vlanif10] ip address 10.1.1.1 255.255.255.128[Quidway-Vlanif10] dhcp select global[Quidway-Vlanif10] quit
9、# 配置VLANIF20接口下的客户端从全局地址池中获取IP地址。[Quidway] interface vlanif 20[Quidway-Vlanif20] ip address 10.1.1.129 255.255.255.128[Quidway-Vlanif20] dhcp select global[Quidway-Vlanif20] quit
10、查看当前Sw坡纠课柩itchA的配置文件#sysname Quidway#vlan batch 10 20#dhcp ena芟鲠阻缒ble#ip pool 1ip pool 2#ip pool 1gateway-list 10.1.1.126network 10.1.1.0 mask 255.255.255.128excluded-ip-address 10.1.1.2excluded-ip-address 10.1.1.4dns-list 10.1.1.2lease day 10 hour 0 minute 0#ip pool 2gateway-list 10.1.1.254network 10.1.1.128 mask 255.255.255.128dns-list 10.1.1.2nbns-list 10.1.1.4lease day 5 hour 0 minute 0#interface Vlanif10ip address 10.1.1.1 255.255.255.128dhcp select global #interface Vlanif20ip address 10.1.1.129 255.255.255.128dhcp select global#interface Ethernet0/0/1port hybrid pvid vlan 10port hybrid untagged vlan 10#interface Ethernet0/0/2port hybrid pvid vlan 20port hybrid untagged vlan 20#return
11、验证配置结果。在Switch上使用display ip pool命令用来查看IP地址池配置情况。
12、[Quidway] display ip pool ------------------颍骈城茇--------------------------------------------------幻腾寂埒--- Pool-Name : 2 Pool-No : 0 Position : Local Status : Unlocked Gateway-0 : 10.1.1.254 Mask : 255.255.255.128 Vpn instance : -- ----------------------------------------------------------------------- Pool-Name : 1 Pool-No : 2 Position : Local Status : Unlocked Gateway-0 : 10.1.1.126 Mask : 255.255.255.128 Vpn instance : -- IP address Statistic Total :250 Used :0 Idle :248 Expired :0 Conflict :0 Disable :2
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