Hello,

I've been through the tutorial up to the multiple switches part
(http://www.openflow.org/wk/index.php/OpenFlow_Tutorial#Support_Multiple_Switches)
and I don't understand what is meant by the following sentence:

    Now, modify your switch so that it stores a MAC-to-port table for each DPID.

First I think I haven't come across any mention of what a DPID is
(though I figured that out) and my controller seems to do the job very
well already (POX creates one instance of the Tutorial class per
switch, each having its own MAC table).

Maybe it is because it is needed for other controllers and not the one
I used (POX). In that case, maybe that would be worth mentioning?

Anyway, so far that's a great tutorial.

Thanks,
--
Bertrand
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