vlan间路由：
system-view
vlan 30
vlan 40
interface gi 1/0/1
port link-type access
port access vlan 30
quit
interface gi 1/0/2
port link-type access
port access vlan 40
quit
interface vlan-interface 30 //进入接口
ip address 192.168.30.254 24 //配置ip地址，掩码
nterface vlan-interface 40
ip address 192.168.40.254 24