[pox-dev] openflow, pox tplink

[Shabbir Ahmed]

This log message...

WARNING:forwarding.l2_learning:Same port for packet from 38:60:77:3f:89:86
-> 00:22:fb:98:a9:f2 on 00-00-00-00-00-01.1.  Drop.

.. indicates that POX is learning that a source and its destination are
both out the same switch port.  A common case where this occurs is with
wireless, because all the wireless devices appear to be the same port.
Additionally, most wireless adapters have an "internal bridge" (which can
often be disabled) which forwards packets between wireless devices before
they ever reach the actual network stack (and OpenFlow).

So: Are you trying to ping between two wireless clients of the tplink?  Or
do you have two cables plugged into it?  In either case, please describe
your topology/setup including ports and ethernet address.
no, wireless interface is disabled, now i hv conncted two laptops to two
ethernet ports of the tplink switch and pinged one from the other, the
fooling msg has not appread instead the above DROP msg has displayed.


> Also, add openflow.keepalive onto your commandline. There's a bug in the
reference switch which causes it to disconnect a lot without this.
>
> sorry i cant see, keep alive both on ofprotocol and or pox, can u guide
further?
Like...

./pox.py openflow.keepalive forwarding.l2_learning
the option is not accepted.

thanks


On Thu, Feb 7, 2013 at 2:05 PM, Murphy McCauley
<murphy.mccauley at gmail.com>wrote:

> This log message...
>
> WARNING:forwarding.l2_learning:Same port for packet from 38:60:77:3f:89:86
> -> 00:22:fb:98:a9:f2 on 00-00-00-00-00-01.1.  Drop.
>
> .. indicates that POX is learning that a source and its destination are
> both out the same switch port.  A common case where this occurs is with
> wireless, because all the wireless devices appear to be the same port.
>  Additionally, most wireless adapters have an "internal bridge" (which can
> often be disabled) which forwards packets between wireless devices before
> they ever reach the actual network stack (and OpenFlow).
>
> So: Are you trying to ping between two wireless clients of the tplink?  Or
> do you have two cables plugged into it?  In either case, please describe
> your topology/setup including ports and ethernet address.
>
> Also, add openflow.keepalive onto your commandline. There's a bug in the
> reference switch which causes it to disconnect a lot without this.
>
> sorry i cant see, keep alive both on ofprotocol and or pox, can u guide
> further?
>
> Like...
>
> ./pox.py openflow.keepalive forwarding.l2_learning
>
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