Hi Aaron,
Let me get this right. You see the 802.1Q tag for a switch and not
another. What does this has to do with NOX? NOX will simply parse
the packet it receives. Should this email to be openflow-discuss
instead? Correct me if I am misinterpreting.
Regards
KK
On 5 January 2011 15:11, Aaron Rosen <aro...@clemson.edu> wrote:
> Gah wrong permissions on file here we go..
>
> Sorry,
>
> Aaron
>
> On Wed, Jan 5, 2011 at 6:08 PM, Aaron Rosen <aro...@clemson.edu> wrote:
>>
>> Opps, sorry for got to attach the laptop dump file.
>>
>> Aaron
>>
>> On Wed, Jan 5, 2011 at 6:08 PM, Aaron Rosen <aro...@clemson.edu> wrote:
>>>
>>> Hi KK,
>>>
>>> Attached are two wireshark dump files. One is a dump from my laptop
>>> plugged into the trunk port (on the hp switch). If you look at it in
>>> wireshark all of these packets have a 802.1Q virtual LAN frame with an ID of
>>> either 845, 846, or 847.
>>>
>>> The other dump file 'dump_at_controller', is a wireshark capture at the
>>> controller where an switch running indigo is pointing. If you look at all of
>>> these packet_in events I don't see any of these 802.1Q frames.
>>>
>>> Thanks,
>>>
>>> Aaron
>>>
>>>
>>>
>>> On Wed, Jan 5, 2011 at 5:58 PM, kk yap <yap...@stanford.edu> wrote:
>>>>
>>>> Hi Aaron,
>>>>
>>>> Can you tell us if there is any difference in the tcpdump from the HP
>>>> and Indigo?
>>>>
>>>> I skimmed through the NOX code and it seems to parse VLAN. So, there
>>>> is something amiss here.
>>>>
>>>> Regards
>>>> KK
>>>>
>>>> On 5 January 2011 14:50, Srini Seetharaman <seeth...@stanford.edu>
>>>> wrote:
>>>> > I'm a bit confused by what you see with Indigo. Here's what I said:
>>>> > - HP switch: Packet_ins seen at the controller will not have the VLAN
>>>> > tag, but outgoing packets in the dataplane will have the appropriate
>>>> > tag.
>>>> > - Indigo switch: Packet_ins seen at the controller will have the VLAN
>>>> > tag if tagged packets are sent to it. For outgoing packets to have the
>>>> > tag, the controller has to add the tag (as an additional action).
>>>> >
>>>> > On Wed, Jan 5, 2011 at 2:37 PM, Aaron Rosen <aro...@clemson.edu>
>>>> > wrote:
>>>> >> Hi Srini,
>>>> >>
>>>> >> In my topology I have an HP switch which I have configured a port to
>>>> >> tag
>>>> >> several vlans. If I plug my laptop into this port I'm able to see the
>>>> >> correct vlan values. Now If I plug a switch into this port that is
>>>> >> running
>>>> >> the indigo firmware when the controller gets the packets I'm seeing
>>>> >> 0xffff
>>>> >> as the value instead of the correct value I see with my laptop using
>>>> >> wireshark.
>>>> >>
>>>> >> (According to your response this should be fine? )
>>>> >>
>>>> >> Aaron
>>>> >>
>>>> >> On Wed, Jan 5, 2011 at 5:31 PM, Srini Seetharaman
>>>> >> <seeth...@stanford.edu>
>>>> >> wrote:
>>>> >>>
>>>> >>> Hi Aaron
>>>> >>> Only pure-OF switches (like Pronto switch with Indigo firmware) will
>>>> >>> send the VLAN tag to the controller. With others, the tag is usually
>>>> >>> added / stripped by the VLAN configs on the switch. So, you'll not
>>>> >>> get
>>>> >>> to see them.
>>>> >>>
>>>> >>> Srini.
>>>> >>>
>>>> >>> On Wed, Jan 5, 2011 at 2:23 PM, Aaron Rosen <aro...@clemson.edu>
>>>> >>> wrote:
>>>> >>> > Hello,
>>>> >>> >
>>>> >>> > I'm trying to extract the dl_vlan value from packets on a trunk
>>>> >>> > port.
>>>> >>> > When I
>>>> >>> > plug my computer into the trunk port and run tcpdump I see the
>>>> >>> > correct
>>>> >>> > 802.1Q values. Though when I attach this port to my openflow
>>>> >>> > switch
>>>> >>> > (running
>>>> >>> > the pronto firmware) I can't get the correct values at my
>>>> >>> > controller.
>>>> >>> >
>>>> >>> > In my controller I'm running these few lines of code to print out
>>>> >>> > what's
>>>> >>> > in
>>>> >>> > the packet.
>>>> >>> >
>>>> >>> > test = extract_flow(packet)
>>>> >>> > print test.keys()
>>>> >>> > print test.values()
>>>> >>> >
>>>> >>> > From this: I'm getting the following output
>>>> >>> >
>>>> >>> > ['dl_type', 'nw_dst', 'dl_vlan_pcp', 'dl_src', 'nw_proto',
>>>> >>> > 'nw_tos',
>>>> >>> > 'tp_dst', 'tp_src', 'dl_dst', 'dl_vlan', 'nw_src']
>>>> >>> > [2048, 4294967295, 0, array('B', [0, 27, 177, 2, 100, 167]), 17,
>>>> >>> > 0, 698,
>>>> >>> > 698, array('B', [255, 255, 255, 255, 255, 255]), 65535,
>>>> >>> > 2189371010]
>>>> >>> >
>>>> >>> > I'm getting 65535 for every packet and that is not correct from
>>>> >>> > what I'm
>>>> >>> > seeing with tcpdump and not what I'm expecting.
>>>> >>> >
>>>> >>> > Can someone point out where I'm going wrong.
>>>> >>> >
>>>> >>> > 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
>>>> >
>>>
>>>
>>>
>>> --
>>> Aaron O. Rosen
>>> Masters Student - Network Communication
>>> 306B Fluor Daniel
>>> 843.425.9777
>>>
>>
>>
>>
>> --
>> Aaron O. Rosen
>> Masters Student - Network Communication
>> 306B Fluor Daniel
>> 843.425.9777
>>
>
>
>
> --
> Aaron O. Rosen
> Masters Student - Network Communication
> 306B Fluor Daniel
> 843.425.9777
>
>
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