1、实验环境
有台DHCP服务器,它属于vlan100,而主机1和主机2分别属于vlan10和vlan20,DHCP服务器发出的广播信息无法到达vlan10和vlan20广播域,这时可以通过在不同vlan各自的网关上配置DHCP中继来让其他vlan的客户机也能从DHCP服务器那里自动获得IP地址。
建立如图所示拓扑图
Cloud1绑定vm网卡
2、实验步骤
SW2命令
vlan batch 10 20 100
#
interface Ethernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
#
interface Ethernet0/0/2
port link-type access
port default vlan 10
#
interface Ethernet0/0/3
port link-type access
port default vlan 20
#
interface Ethernet0/0/4
port link-type access
port default vlan 100
sw1命令
vlan batch 10 20 100
#
dhcp enable
#
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface Vlanif20
ip address 192.168.20.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface Vlanif100
ip address 192.168.100.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.100
#
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
配置完成后进入虚拟机,编辑网卡信息
在dhcp配置文件中添加给vlan 10,vlan 20,vlan 100网段的IP地址池(DHCP包已经提前安装好)
开启DHCP服务
3、实验认证
1.在主机1和主机2中开启DHCP服务
2.在主机1和主机2中输入#ipconfig /renew#自动获取到了地址池中的IP地址,实验成功
实验结束。