Thank you for the info!
Tinytopo in POXDesk works indeed fine!
However, if both topology and tinytopo are running, the graph in POXDesk
lacks some switches (same number as topology).
Does topology influence tinytopo when they are both running?
2012/11/17 Murphy McCauley <murphy.mccau...@gmail.com>
> I suspect discovery is fine and the problem is in topology, which is
> (unfortunately) a piece of junk and I should just delete it until something
> better can be written. I suggest that if you want to track topology, you
> just watch discovery events. See POXDesk's tinytopo.py for an example.
>
> You also might check Kyriakos' POX branch which has a somewhat better
> topology module.
>
> If you really want topology to "work", try setting _next_id on line 120 of
> topology/topology.py to 0x1000000000000L.
>
> -- Murphy
>
> On Nov 16, 2012, at 12:42 PM, Tmusic wrote:
>
> For I while I've been testing with POX (betta branch) and mininet in a VM.
> Everything goes well until a "larger" number of switches is fired up.
> Not all switches are added to the topology...
>
> Steps to reproduce (example of where it goes wrong):
> - start mininet with sudo mn --switch ovsk --controller remote --topo
> tree,depth=4,fanout=3 --mac (this will start about 40 switches)
> - start pox with these components: topology openflow.topology
> openflow.discovery
> - Only 22 switches are discovered
>
> There are some errors in the output (see trace below), but the total
> number of "ID already taken" errors does not equal the total number of
> missing switches.
>
> I updated mininet to the most recent stable (1.0 series) version to
> eliminate mininet problems, but without result. I was thinking in the
> direction of duplicate dpid's, but I guess that in that case the number of
> errors should be equal to the number of missing switches (and equal to the
> number of duplicate dpid's)?
> I haven't found any obvious issues in the wireshark dump (but it's easy to
> look over with this number of connections)...
>
> Any ideas or similar problems?
>
> Thank you in advance,
>
> Tim
>
>
>
>
> DEBUG TRACE
> pydev debugger: starting
> POX 0.0.0 / Copyright 2011-2012 James McCauley, et al.
> DEBUG:core:POX 0.0.0 going up...
> DEBUG:core:Running on CPython (2.7.1+/Apr 11 2011 18:05:24)
> DEBUG:core:Platform is Linux-2.6.38-8-generic-i686-with-Ubuntu-11.04-natty
> INFO:core:POX 0.0.0 is up.
> DEBUG:openflow.of_01:Listening on 0.0.0.0:6633
> INFO:openflow.of_01:[00-00-00-00-00-76 1] connected
> DEBUG:openflow.discovery:Installing flow for 00-00-00-00-00-76
> INFO:openflow.topology:Switch 00-00-00-00-00-76 connected
> DEBUG:topology:<OpenFlowSwitch 00-00-00-00-00-76> (id: 118) joined
> INFO:openflow.of_01:[00-00-00-00-00-66 2] connected
> DEBUG:openflow.discovery:Installing flow for 00-00-00-00-00-66
> File "/usr/lib/python2.7/threading.py", line 525, in __bootstrap
> self.__bootstrap_inner()
> File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
> self.run()
> File "/usr/lib/python2.7/threading.py", line 505, in run
> self.__target(*self.__args, **self.__kwargs)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/recoco/recoco.py", line
> 250, in run
> r = self.cycle()
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/recoco/recoco.py", line
> 276, in cycle
> rv = t.execute()
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/recoco/recoco.py", line
> 94, in execute
> return self.gen.send(v)
> 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 705, in read
> h(self, msg)
> File "/home/openflow/pox_workspace/OFcontroller/pox/openflow/of_01.py",
> line 173, in handle_BARRIER
> con.raiseEventNoErrors(BarrierIn, con, msg)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 233, in raiseEventNoErrors
> return self.raiseEvent(event, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 280, in raiseEvent
> rv = event._invoke(handler, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 158, in _invoke
> return handler(self, *args, **kw)
> File "/home/openflow/pox_workspace/OFcontroller/pox/openflow/of_01.py",
> line 118, in finish_connecting
> con.ofnexus.raiseEventNoErrors(ConnectionUp, con, msg)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 233, in raiseEventNoErrors
> return self.raiseEvent(event, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 280, in raiseEvent
> rv = event._invoke(handler, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 158, in _invoke
> return handler(self, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 88, in _handle_openflow_ConnectionUp
> sw._setConnection(event.connection, event.ofp)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 216, in _setConnection
> self.ports[p.port_no] = OpenFlowPort(p)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 118, in __init__
> Port.__init__(self, ofp.port_no, ofp.hw_addr, ofp.name)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/topology/topology.py", line
> 164, in __init__
> Entity.__init__(self)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/topology/topology.py", line
> 134, in __init__
> self._tb[id] = traceback.extract_stack()
>
> ERROR:core:Exception while handling OpenFlowNexus!ConnectionUp...
> Traceback (most recent call last):
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 233, in raiseEventNoErrors
> return self.raiseEvent(event, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 280, in raiseEvent
> rv = event._invoke(handler, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/lib/revent/revent.py", line
> 158, in _invoke
> return handler(self, *args, **kw)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 82, in _handle_openflow_ConnectionUp
> sw = OpenFlowSwitch(event.dpid)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/openflow/topology.py", line
> 184, in __init__
> Switch.__init__(self, id=dpid)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/topology/topology.py", line
> 160, in __init__
> Entity.__init__(self, id)
> File
> "/home/openflow/pox_workspace/OFcontroller/pox/topology/topology.py", line
> 128, in __init__
> raise Exception("ID %s already taken" % str(id))
> Exception: ID 102 already taken
> INFO:openflow.of_01:[00-00-00-00-00-72 4] connected
> DEBUG:openflow.discovery:Installing flow for 00-00-00-00-00-72
> INFO:openflow.topology:Switch 00-00-00-00-00-72 connected
> DEBUG:topology:<OpenFlowSwitch 00-00-00-00-00-72> (id: 114) joined
> INFO:openflow.of_01:[00-00-00-00-00-64 3] connected
> DEBUG:openflow.discovery:Installing flow for 00-00-00-00-00-64
>
>
>
