[pox-dev] openflow, pox tplink

[Shabbir Ahmed]

thank you very much Murphy, right now my objective is learning the openflow
with spending less amount, i think a real switch would be lot expansive so
im restricted. ill try to make changes in the ....debug.py will try to
block a src mac to a desitnation mac but im affraid the ping will still
work  ... otherwise ill test all this on ovs and wait for a time when i
have a openflow switch available to me.

thanks,

what would be the command on openwrt to look at the forwarding table?


On Fri, Feb 8, 2013 at 11:08 AM, Murphy McCauley
<murphy.mccauley at gmail.com>wrote:

> On Feb 7, 2013, at 10:01 PM, Shabbir Ahmed wrote:
>
> > another reason could be that the switch in tp-link is not 100% openflow
> compatible?
>
> Well, the switch you're running is pretty much all software, so that's not
> likely to be it.
>
> > can u guide me how to confirm if im doing the right thing
> (troubleshooting cmds), and OpenFlow is working? and u can give some links
> to learn more, wat was wrong with l2_forwaring?
>
> The problem with l2_forwarding is that it's seeing everything as coming
> from the same port.  This is actually going to stop l2_pairs or anything
> from working correctly, pretty much.  Without being able to control ports
> independently, you're fairly limited in what you can do.
>
> It's fairly common for cheap switches to have like three real ports.  One
> is the "WAN" port used to connect to the internet.  One is the wireless
> adapter.  The other is a single port which is connected to a dumb switch or
> hub and then fanned out into like four other ports (as viewed by OpenFlow,
> these are all a single port).
>
> You might want to find out if this is the case with your switch.  You can
> probably find a reference to it somewhere.  Also, if you run POX with no
> components and can still ping between the ports, they're probably all
> switched/hubbed together. Also... if the back of your switch has like five
> ports on it, but there are only like three interfaces in your ifconfig
> list, this is probably the case.
>
> -- Murphy
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