[[linux_wiki:vlan_tagging]]

VLAN Tagging

General Information

VLAN tagging network interfaces.

Checklist

  • Distro(s): Enterprise Linux 6/7

Ensure Kernel Module is Loaded

By default, the 8021q kernel module should be loaded. Double check.

lsmod | grep 8021q

If no results, load the module

modprobe 8021q

VLAN Tagging: ifcfg files

  • Configure the regular network interface (parent) with very basic information
    /etc/sysconfig/network-scripts/ifcfg-eth1
     
    DEVICE=eth1
    TYPE=Ethernet
    BOOTPROTO=none
    ONBOOT=yes
  • Configure the virtual network interface as the name of the parent plus “.”, then the VLAN ID.
    Example: if the VLAN ID is 20
    /etc/sysconfig/network-scripts/ifcfg-eth1.20
     
    DEVICE=eth1.20
    BOOTPROTO=none
    ONBOOT=yes
    IPADDR=10.1.2.3
    NETMASK=255.255.255.0
    GATEWAY=10.1.2.254
    VLAN=yes
  • Restart the nework service
    • EL7
      systemctl restart network
    • EL6
      service network restart

  • linux_wiki/vlan_tagging.txt
  • Last modified: 2019/05/26 03:50
  • (external edit)