需要联网设备的ip地址都是怎么来的

DHCP地址自动获取教你怎么玩

1、网络拓扑

2、在相应设备上启用DHCP服务

[SW1] dhcp enable

3、配置相应vlan,在对应vlan下加入对应的端口，进入vlan虚接口创建ip网关地址

[SW1]vlan 10

[SW1-vlan10]port GigabitEthe.NET 1/0/1

[SW1]vlan 20

[SW1-vlan20]port GigabitEthernet 1/0/2

[SW1]vlan 30

[SW1-vlan30]port GigabitEthernet 1/0/3

[SW1]interface vlan 10

[SW1-Vlan-interface10]ip address 192.168.10.254 255.255.255.0

[SW1]interface vlan 20

[SW1-Vlan-interface20]ip address 192.168.20.254 255.255.255.0

[SW1]interface vlan 30

[SW1-Vlan-interface30]ip address 192.168.30.254 255.255.255.0

4、创建DHCP地址池10、20、30用来为客户端分配对应的网段IP地址

[SW1]dhcp server ip-pool 10

[SW1-dhcp-pool-10]network 192.168.10.0 mask 255.255.255.0

[SW1-dhcp-pool-10]gateway-list 192.168.10.254

[SW1-dhcp-pool-10]DNS-list 202.99.160.68 114.114.114.114

[SW1]dhcp server ip-pool 20

[SW1-dhcp-pool-20]network 192.168.20.0 mask 255.255.255.0

[SW1-dhcp-pool-20]gateway-list 192.168.20.254

[SW1-dhcp-pool-20]dns-list 202.99.160.68 114.114.114.114

[SW1]dhcp server ip-pool 30

[SW1-dhcp-pool-30]network 192.168.30.0 mask 255.255.255.0

[SW1-dhcp-pool-30]gateway-list 192.168.30.254

[SW1-dhcp-pool-30]dns-list 202.99.160.68 114.114.114.114

5、配置不参与自动分配的IP地址，留给打印机设备使用。

[SW1]dhcp server forbidden-ip 192.168.10.250

[SW1]dhcp server forbidden-ip 192.168.20.250

[SW1]dhcp server forbidden-ip 192.168.30.250

6、保存配置并重启交换机

[SW1]save force

7、pc可以正常获取到对应IP地址