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 10
要在全局下开启DHCP功能 【】 dhcp enable
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.2
interface Vlanif20
ip address 192.168.20.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.100.2
interface Vlanif30
ip address 192.168.100.1 255.255.255.0
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/3
port link-type access
port default vlan 30
①在全局下新建一个网络,并使用桥接模式(必须是在ensp里桥接的网卡)
②在虚拟机设置里选择自定义网络(刚刚创建的)
③手动配置centos 7的IP地址(这里设为192.168.100.2)
5.在centos 7 上下载dhcp,并配置①下载DHCP
yum install -y dhcp
②配置DHCP的配置文件 /etc/dhcp/dhcpd.conf
其中域名可以删掉
log-facility local7;subnet 192.168.10.0 netmask 255.255.255.0 { range 192.168.10.100 192.168.10.200; option domain-name-servers 114.114.114.114; option domain-name "ddblog.xyz"; option routers 192.168.10.1; option broadcast-address 192.168.10.255; default-lease-time 300; max-lease-time 7200; }subnet 192.168.10.0 netmask 255.255.255.0 { range 192.168.10.20 192.168.10.200; ##地址池 option domain-name-servers 114.114.114.114; ##DNS服务器地址 option domain-name "ddblog.xyz"; ##域名 option routers 192.168.10.1; ##默认路由 option broadcast-address 192.168.10.255; ##广播地址 default-lease-time 300; ##默认租约时间 max-lease-time 7200; ##最大租约时间 }
③启动DHCP服务
systemctl start dhcpd
6.其他rpm -ql dhcp #查看dhcp包安装了哪些文件和程序 /etc/dhcpd.conf #主配置文件 /etc/rc.d/init.d/dh #服务启动脚本 /etc/rc.d/init.d/dhcrelay #继dhcp服务启动脚本 /etc/sysconfig/dhcpd #次要配置文件 /etc/sysconfig/dhcrelay /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example #示例文件 /ust/lib/systemd/system/dhcpd.services # 服务启动脚本 /var/lib/dhcpd/dhcpd.leases #租约信息存放的文件 /var/lib/dhclient/dhclient.leases #客户端租约文件 /var/lib/dhcpd/dhcpd.leases #服务器端的租约文件在 /etc/dhcp/dhcpd.conf #dhcp配置文件
7.结果展示 博客地址 https://www.ddblog.xyz/articles/56