1.安装vlan(vconfig)和加载8021q模块
#aptitude install vlan
#modprobe 8021q
或：
#yum install vconfig
#modprobe 8021q
#lsmod |grep -i 8021q
2.使用linux vconfig命令配置vlan
#vconfig add eth0 100
#vconfig add eth0 200
在eth0接口上配置两个VLAN
#vconfig set_flag eth0.100 1 1
#vconfig set_flag eth0.200 1 1
设置VLAN的REORDER_HDR参数，默认就行了。
可以使用cat /proc/net/vlan/eth0.100查看eth0.100参数
#ifconfig eth0 0.0.0.0
#ifconfig eth0.100 192.168.100.50 netmask 255.255.255.0 up
#ifconfig eth0.200 192.168.200.50 netmask 255.255.255.0 up
配置网络信息
#vconfig rem eth0.100
#vconfig rem eth0.200
删除VLAN命令
3.将VLAN信息写入配置文件
#echo "modprobe 8021q">>/etc/rc.local
开机加载8021q模块，或者使用echo "8021q">>/etc/modules
#cp /etc/network/interfaces /etc/network/interfaces.default
#vim /etc/network/interfaces
auto lo eth0
iface lo inet loopback
iface eth0.100 inet static
address 192.168.100.50
netmask 255.255.255.0
iface eth0.200 inet static
address 192.168.200.50
netmask 255.255.255.0
======================================================
VCONFIG(8) VCONFIG(8)
NAME
vconfig - VLAN (802.1q) configuration program.
SYNOPSIS
vconfig [lots of long options]
DESCRIPTION
The vconfig program allows you to create and remove vlan-devices on a vlan enabled kernel. Vlan-devices are virtual ethernet devices
which represents the virtual lans on the physical lan.
OPTIONS
add [interface-name] [vlan-id]
Creates a vlan-device on [interface-name]. The resulting vlan-device will be called according to the nameing convention set.
rem [vlan-device]
Removes the named vlan-device.
set_flag [vlan-device] 0 | 1
When 1, ethernet header reorders are turned on. Dumping the device will appear as a common ethernet device without vlans. When
0(default) however, ethernet headers are not reordered, which results in vlan tagged packets when dumping the device. Usually
the default gives no problems, but some packet filtering programs might have problems with it.
set_egress_map [vlan-device] [skb-priority] [vlan-qos]
This flags that outbound packets with a particular skb-priority should be tagged with the particular vlan priority vlan-qos.
The default vlan priority is 0.
set_ingress_map [vlan-device] [skb-priority] [vlan-qos]
This flags that inbound packets with the particular vlan priority vlan-qos should be queued with a particular skb-priority. The
default skb-priority is 0.
set_name_type VLAN_PLUS_VID | VLAN_PLUS_VID_NO_PAD | DEV_PLUS_VID | DEV_PLUS_VID_NO_PAD
Sets the way vlan-device names are created. Use vconfig without arguments to see the different formats.
NOTES VLAN will use Broadcom’s NICE interface when the network device supports it. This is necessary, since usually the hardware of
these devices already removes the vlan tag from the ethernet packet. The set_flag option on vlan-devices created on such a
physical network device will be ignored. Dumping the network-device will show only untagged(non-vlan) traffic, and dumping the
vlan-devices will only show traffic intended for that vlan, without the tags.
FILES
/proc/net/vlan/config
/proc/net/vlan/[vlan-device]
SEE ALSO
ip(8), ifconfig(8)
AUTHORS
This manual page was written by Ard van Breemen <ard@kwaak.net>
The vlan patch is written by Ben Greear <greearb@candelatech.com>
VCONFIG(8)
(END)
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