====== VLAN Frame Tagging Support (802.1q trunking) ======


The DNS-323 can support 802.1q vlans/frame tagging.  The native kernel does not support this, however.  To make it work, you must load an 8021q.ko kernel module into your kernel.  You should have a chroot debian install to accomplish this.  I will spare you the trouble of having to compile the module yourself.

Here is a link to the file: [[http://rapidshare.com/files/178306707/8021q.ko|8021q.ko]].  **Warning: I have only tested this with firmware 1.06, but may work with earlier versions.  Use at your own risk!**

One reason you may want to do this is that you want to configure jumbo frames for (potentially) faster DNS-323 performance, but don't want to/can't activate jumbo frames on your primary network because some devices don't support it.  (Jumbo frames require a Gigabit switch, but not all Gigabit switches and NIC's support jumbo frames)
<code bash>
#Put the file in the proper location
sudo mkdir /lib/modules/2.6.12.6-arm1
sudo cp 8021q.ko /lib/modules/2.6.12.6-arm1
sudo depmod -a
#Load the module into the kernel
sudo modprobe 8021q
#Install the vlan package - This enables management of vlans
sudo apt-get install vlan
#Use the vconfig command to configure a new trunked sub-interface
sudo vconfig add egiga0 <vlan number>
</code>
Use //sudo ifconfig// to configure your new interface.  It should appear as egiga0.<vlan>.  Don't forget to bring the interface up!

Be sure to save the config steps to //your fun_plug// or //linuxrc// file **(after you test this first!)** so this is persistent across reboots.