默认给s5120交换机配置好vlan和vlan_dhcp，ping vlan的网关是不通的，解决办法：
1、[H3C]display ip interface brief 查看vlan虚拟接口是否up
*down: administratively down
(s): spoofing
Interface Physical Protocol IP Address Description
Vlan-interface1 up up 192.168.100.252 Vlan-inte...
Vlan-interface60 down down 188.188.60.1 Vlan-inte...
Vlan-interface80 down down 188.188.80.1 Vlan-inte...
说明：60 和80 是我创建的vlan，状态是down，需要手动开启
2、[H3C]interface GigabitEthernet 1/0/1 进入一号端口 这是是5120交换机端口链接上面三层或者防火墙的端口，如果不是1号端口，则需要根据实际端口配置。
3、[H3C-GigabitEthernet1/0/1]port link-type trunk 将端口设置成trunk
4、[H3C-GigabitEthernet1/0/1]port trunk permit vlan all
Please wait........................................... Done.
5、[H3C]dis ip interface brief 查看虚拟接口状态
*down: administratively down
(s): spoofing
Interface Physical Protocol IP Address Description
Vlan-interface1 up up 192.168.100.252 Vlan-inte...
Vlan-interface60 up up 188.188.60.1 Vlan-inte...
Vlan-interface80 up up 188.188.80.1 Vlan-inte...
6、然后ping 60 80 网段下的网关，能ping通 ok
本文出自 “david0512” 博客，请务必保留此出处http://gjr0512.blog.51cto.com/6518687/1618707
原文地址：http://gjr0512.blog.51cto.com/6518687/1618707
