Monday, December 7, 2009

linux 802.1q support

In the previous article "vlan tag under vmware/virtualbox", I found that the e1000 network driver cannot insert vlan tag to frames. In this article I want to tell you that I WAS WRONG.

After some experiments, I found that the e1000 driver does insert the vlan tag into the frames. The problem is that the e1000 driver automatically remove vlan tags when receiving incoming frames before I was trying to read the incoming frames by tcpdump.

So, we can now use liunx + 802.1q module to communicate with vlan members.

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