Configure vlan on CentOS 5

first install vconfig

yum -y install vconfig

check if module loaded

lsmod | grep 8021q

If not loaded try to load with

modprobe 8021q

If you get a error message, than try a other kernel with vlan support

copy /etc/sysconfig/network-scripts/ifcfg-eth0 to /etc/sysconfig/network-scripts/ifcfg-eth0.<vlan>

add .<vlan> to DEVICE line

add vlan=yes

Example:

DEVICE=eth0.201
BOOTPROTO=none
BROADCAST=172.16.201.255
IPADDR=172.16.201.13
NETMASK=255.255.255.0
NETWORK=172.16.201.0
ONBOOT=yes

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