

在三层交换机上打这些命令:
ip dhcp pool vlan10
network 192.168.10.0 255.255.255.0
default-router 192.168.10.254
dns-server 192.168.30.1
ip dhcp excluded-address 192.168.10.1
ip dhcp excluded-address 192.168.10.10
ip dhcp pool vlan20
network 192.168.20.0 255.255.255.0
default-router 192.168.20.254
dns-server 192.168.30.1
ip dhcp excluded-address 192.168.20.1
ip dhcp excluded-address 192.168.20.10
int vlan 10
ip add192.168.10.1 255.255.255.0
no shut
int vlan 20
ip add 192.168.20.1 255.255.255.0
no shut
ip routing
记住要配置trunk和划分vlan(PC0为vlan10 、PC1为vlan20)
如果不行再问我吧