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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: 8021q.ko.
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 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)
- #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 your new trunked sub-interface
- sudo vconfig add egiga0 <vlan number>
- #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.
