9.2.6. Setting Up 802.1q VLAN Tagging

.2.6. Setting Up 802.1q VLAN Tagging

1. Ensure that the module is loaded by entering the following command:

    lsmod | grep 8021q

2. If the module is not loaded, load it with the following command:

   modprobe 8021q

3. Configure your physical interface in /etc/sysconfig/network-scripts/ifcfg-ethX, where X is a unique number corresponding to a specific interface, as follows:

   DEVICE=ethX
   TYPE=Ethernet
   BOOTPROTO=none
   ONBOOT=yes

4. Configure the VLAN interface configuration in /etc/sysconfig/network-scripts. The configuration filename should be the physical interface plus a . character plus the VLAN ID number. For example, if the VLAN ID is 192, and the physical interface is eth0, then the configuration filename should be ifcfg-eth0.192:

   DEVICE=ethX.192
   BOOTPROTO=none
   ONBOOT=yes
   IPADDR=192.168.1.1
   NETMASK=255.255.255.0
   USERCTL=no
   NETWORK=192.168.1.0
   VLAN=yes

   If there is a need to configure a second VLAN, with for example, VLAN ID 193, on the same interface, eth0 , add a new file with the name eth0.193 with the VLAN configuration details.
5. Restart the networking service, in order for the changes to take effect, as follows:

    service network restart 

출처 : https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-networkscripts-interfaces_802.1q-vlan-tagging.html