James is right, you should check with tcpdump.
By looking at the send_openflow code, you can see,
if buffer_id != None:
self.send_openflow_buffer(dp_id, buffer_id, actions, inport)
Switch the buffer_id for None and it should work, the comment is incorrect.
On Dec 10, 2010, at 8:22 PM, James Murphy McCauley wrote:
> Have you installed a rule to send the entire packet (the type that you
> want to duplicate) to the controller? If not, it may well be truncated.
> So you may only be sending the truncated version out on the second dpid.
> Depending on how you're checking to see if this is working, this may
> just look like it's failing (e.g., because if it's a TCP packet, the
> receiver will just throw it away because its checksum will be wrong
> among other things).
>
> -- Murphy
>
> On Fri, 2010-12-10 at 14:08 -0500, Aaron Rosen wrote:
>> Hi Ali,
>>
>> Looking at the comments for send_openflow, if buffer_id is -1 then, it
>> should send the packet. Though, maybe I'm still doing this
>> incorrectly?
>>
>> actions = [[openflow.OFPAT_OUTPUT, [0, 11]]]
>> self.send_openflow(self.dpid_of_duplication, -1,
>> buf, actions, inport)
>>
>> also
>> actions = [[openflow.OFPAT_PACKET_OUTPUT, [0,
>> 11]]]
>> self.send_openflow(self.dpid_of_duplication, -1,
>> buf or packet, actions, inport)
>>
>> doesn't seem to work. Could you point out where I'm going wrong?
>>
>>
>> Thanks,
>>
>> Aaron
>>
>>
>> On Fri, Dec 10, 2010 at 1:41 PM, Ali Al-Shabibi
>> <ali.al-shab...@cern.ch> wrote:
>> Hi Aaron,
>>
>> self.dpid_of_duplication is not the dpid the packet arrived
>> on, therefore therefore bufid is meaningless to
>> self.dpid_of_duplication. You should send
>> self.dpid_of_duplication the actual packet you want to
>> packet_out.
>>
>> Hope this helps,
>>
>> --
>> Ali Al-Shabibi
>>
>>
>> On 10 déc. 2010, at 18:57, Aaron Rosen <aro...@clemson.edu>
>> wrote:
>>
>>> Hello,
>>>
>>> When I get a specific kind of packet I want to send that
>> packet to a specific dpid and port and also send it to the
>> dpid and port that the packet was intended for.
>>>
>>> If I do:
>>>
>>> # send packet to end host
>>> # note self.PortMaping[dpid, mac_to_str(packet.dst)] returns
>> the port number the packet.dst is on
>>>
>>> actions = [[openflow.OFPAT_OUTPUT, [0, self.PortMaping[dpid,
>> mac_to_str(packet.dst)]]]]
>>> self.send_openflow(dpid, bufid, buf, actions, inport)
>>>
>>> # send packet to specific dpid and port 11
>>>
>>> actions = [[openflow.OFPAT_OUTPUT, [0, 11]]]
>>> self.send_openflow(self.dpid_of_duplication, bufid, buf,
>> actions, inport)
>>>
>>> The packet never gets to the self.dpid_of_duplication port
>> 11.
>>>
>>> Anyone see where I'm going wrong here?
>>>
>>> Thanks,
>>>
>>> Aaron
>>>
>>> --
>>> Aaron O. Rosen
>>> Masters Student - Network Communication
>>> 306B Fluor Daniel
>>> 843.425.9777
>>>
>>
>>> _______________________________________________
>>> nox-dev mailing list
>>> nox-dev@noxrepo.org
>>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>>
>>
>>
>> --
>> Aaron O. Rosen
>> Masters Student - Network Communication
>> 306B Fluor Daniel
>> 843.425.9777
>>
>> _______________________________________________
>> nox-dev mailing list
>> nox-dev@noxrepo.org
>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>
>
--
Ali Al-Shabibi
Doctoral Student
PH-ATD
CERN - European Organization for Nuclear Research
Office: 513 R-018
ali.al-shab...@cern.ch
Tel : +41 22 767 86 46
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