[pox-dev] Constructing 802.1q ethernet frames with POX's library

[Lucas Brasilino]

Hi Murphy

> Should be more or less the same.  As far as the packet library is concerned, Ethernet encapsulates VLAN and VLAN in turn encapsulates IP:
> eth.payload = vlan
> vlan.payload = ip

Ok, nice... it seems to work. My next step will be sending this packet
out and see if Open vSwitch 1.11 is able to do so.

>> By the way, is item #2 feasible ? How ?
>
> Within the L2 payload but before the L3?  Is this a custom protocol/packet type/encapsulation?  If POX doesn't know it, it'll just result in the raw bytes being inserted into the chain of packet objects.  You could either use this itself, or you could extend the packet library to understand it.

Yep, it's a custom protocol/encapsulation. I agree... the better way
surely is writing a packet library extension to deal with it...

> Note that all this is happening on the controller and not on the switch... I hope you're not planning to do such packet processing at a high rate.

Sure! It's a experiment, not intended to a production environment. Do
you know if OVS 1.11 is capable to insert/remove some bytes between
layers headers ? (I know it's a off-topic question, I'm just curious
:) )

thanks!

Lucas Brasilino