[pox-dev] Requesting port statistics (problem with connection)

[Tmusic]

Hi,

Thank you very much!!
Topology and discovery are working.
Flow stats are working.

Port stats still give errors:
Request goes well and the switch responds (checked with wireshark).
I think it happens while parsing the received packet.

Traceback (most recent call last):
  File "/home/openflow/pox_workspace/OFcontroller/pox/openflow/of_01.py",
line 835, in run
    if con.read() is False:
  File "/home/openflow/pox_workspace/OFcontroller/pox/openflow/of_01.py",
line 700, in read
    msg.unpack(self.buf)
  File
"/home/openflow/pox_workspace/OFcontroller/pox/openflow/libopenflow_01.py",
line 2332, in unpack
    self.body.append(n)
NameError: global name 'n' is not defined


This the wireshark analysis of the port stats response:

Frame 4515: 496 bytes on wire (3968 bits), 496 bytes captured (3968 bits)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
Transmission Control Protocol, Src Port: 53590 (53590), Dst Port: 6633
(6633), Seq: 269, Ack: 353, Len: 428
OpenFlow Protocol
    Header
        Version: 0x01
        Type: Stats Reply (CSM) (17)
        Length: 428
        Transaction ID: 14
    Stats Reply
        Type: Physical port statistics (0x0004)
        Flags: 0
        Port Stats
            Port #: 3
            # Received packets: 6
            # Transmitted packets: 88
            # Received bytes: 468
            # Transmitted bytes: 3608
            # RX dropped: 0
            # TX dropped: 0
            # RX errors: 0
            # TX errors: 0
            # RX frame errors: 0
            # RX overrun errors: 0
            # RX CRC errors: 0
            # Collisions: 0
        Port Stats
            Port #: 2
            # Received packets: 6
            # Transmitted packets: 79
            # Received bytes: 468
            # Transmitted bytes: 3239
            # RX dropped: 0
            # TX dropped: 0
            # RX errors: 0
            # TX errors: 0
            # RX frame errors: 0
            # RX overrun errors: 0
            # RX CRC errors: 0
            # Collisions: 0
        Port Stats
            Port #: Local  (local openflow "port")
            # Received packets: 0
            # Transmitted packets: 0
            # Received bytes: 0
            # Transmitted bytes: 0
            # RX dropped: 0
            # TX dropped: 0
            # RX errors: 0
            # TX errors: 0
            # RX frame errors: 0
            # RX overrun errors: 0
            # RX CRC errors: 0
            # Collisions: 0
        Port Stats
            Port #: 1
            # Received packets: 6
            # Transmitted packets: 72
            # Received bytes: 468
            # Transmitted bytes: 2952
            # RX dropped: 0
            # TX dropped: 0
            # RX errors: 0
            # TX errors: 0
            # RX frame errors: 0
            # RX overrun errors: 0
            # RX CRC errors: 0
            # Collisions: 0

Thanks,

Tim



2012/10/6 Murphy McCauley <murphy.mccauley at gmail.com>

> All right, yeah, openflow.topology was majorly broken.  It should be in
> somewhat better shape now.
>
> (I never use it -- it's due for a major overhaul.)
>
> -- Murphy
>
> On Oct 6, 2012, at 7:03 AM, Murphy McCauley wrote:
>
> That method was renamed to listen_to_dependencies().  I think it's in
> there twice.  Does renaming it fix everything?
>
> You'll also need to run openflow.discovery if you want topology discovery,
> BTW.
>
> -- Murphy
>
> On Oct 6, 2012, at 5:49 AM, Tmusic wrote:
>
> Hi,
>
> Thanks!
> I'm indeed running python 32bit in a VM.
> Betta can run now, but topology discovery is not working.
> When running the topology and openflow.topology components, I get
> following error:
>
> Traceback (most recent call last):
>   File "/home/openflow/pox_workspace/OFcontroller/pox/boot.py", line 447,
> in boot
>     if _do_launch(argv):
>   File "/home/openflow/pox_workspace/OFcontroller/pox/boot.py", line 187,
> in _do_launch
>     f(**params)
>   File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 316, in launch
>     core.register("openflow_topology", OpenFlowTopology())
>   File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 66, in __init__
>     if not core.listenToDependencies(self, self._wantComponents):
>   File "/home/openflow/pox_workspace/OFcontroller/pox/core.py", line 481,
> in __getattr__
>     raise AttributeError("'%s' not registered" % (name,))
> AttributeError: 'listenToDependencies' not registered
>
> Topology seems to be ok, but PyDev indicates an unresolved import in
> openflow.topology (xid_generator).
>
> Any ideas?
>
> Thanks,
>
> Tim
>
>
> 2012/10/5 Murphy McCauley <murphy.mccauley at gmail.com>
>
>> On Oct 5, 2012, at 1:34 PM, Murphy McCauley wrote:
>> >> Betta (0ca0a8b5b5726195aa2c69337af98a146308dab9) always gives
>> following error (no matter which components are loaded):
>> > ...
>> >>  File
>> "/home/openflow/temp_repo/poxrefbetta/pox/openflow/libopenflow_01.py", line
>> 51, in xid_generator
>> >>    return chain.from_iterable(repeat(xrange(start,stop+1))).next
>> >> OverflowError: Python int too large to convert to C long
>> >
>> > Oh, weird.  I guess you're running a 32 bit Python?  Try knocking the
>> +1 off the second arg to xrange and seeing if that fixes it.
>>
>> Yeah, I confirmed this was a 32 bit issue.  I've pushed a fix.  Thanks
>> for the report.
>>
>> -- Murphy
>
>
>
>
>
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