[pox-dev] MPLS match and labels popping

[AMER]

Dear All

I would like to ask you about the following match commands and actions

       msg1 = nx.nx_flow_mod()
       msg1.match = nx.nx_match()
       msg1.match.eth_type = pkt.ethernet.MPLS_TYPE       
       msg1.match.mpls_label = 50# host 1 10.0.0.1
       msg1.actions.append(of.ofp_action_output(port = 1))

The above matches didn't work when I tested it in mininet 2.2.1, OvS 2.3.2 , POX is "POX 0.2.0 (carp)"
The push command is:

       msg = nx.nx_flow_mod()
       msg.match.of_eth_src = "00:00:00:00:00:04"
       msg.actions.append(nx.nx_action_push_mpls())
       msg.actions.append(nx.nx_reg_load(dst=nx.OXM_OF_MPLS_LABEL, value=50))
       msg.actions.append(of.ofp_action_output(port = 2))
       core.openflow.sendToDPID(event.dpid, msg)

Also, when I tried to use pop command as the following I received the down error

       msg1 = nx.nx_flow_mod()
       msg1.match = nx.nx_match()
       msg1.match.eth_type = pkt.ethernet.MPLS_TYPE       
       msg1.match.mpls_label = 50# host 1 10.0.0.1
       msg1.actions.append(nx.nx_action_pop_mpls()) ######<-- POP
       msg1.actions.append(of.ofp_action_output(port = 1))

The error is:

POX 0.2.0 (carp) / Copyright 2011-2013 James McCauley, et al.
INFO:forwarding.l2_mid:Simple NX switch running.
INFO:core:POX 0.2.0 (carp) is up.
INFO:openflow.of_01:[00-00-00-00-00-02 1] connected
INFO:forwarding.l2_mid:2 switches in path
INFO:openflow.of_01:[00-00-00-00-00-01 2] connected
INFO:forwarding.l2_mid:1 switches in path
ERROR:core:Exception while handling OpenFlowNexus!ConnectionUp...
Traceback (most recent call last):
  File "/home/alghada/pox/pox/lib/revent/revent.py", line 231, in raiseEventNoErrors
    return self.raiseEvent(event, *args, **kw)
  File "/home/alghada/pox/pox/lib/revent/revent.py", line 278, in raiseEvent
    rv = event._invoke(handler, *args, **kw)
  File "/home/alghada/pox/pox/lib/revent/revent.py", line 156, in _invoke
    return handler(self, *args, **kw)
  File "/home/alghada/pox/pox/forwarding/l2_mid.py", line 110, in _handle_ConnectionUp
    core.openflow.sendToDPID(event.dpid, msg1)
  File "/home/alghada/pox/pox/openflow/__init__.py", line 353, in sendToDPID
    self._connections[dpid].send(data)
  File "/home/alghada/pox/pox/openflow/of_01.py", line 692, in send
    data = data.pack()
  File "/home/alghada/pox/pox/openflow/nicira.py", line 387, in pack
    packed += i.pack()
  File "/home/alghada/pox/pox/openflow/libopenflow_01.py", line 2036, in pack
    body = self._pack_body()
  File "/home/alghada/pox/pox/openflow/nicira.py", line 815, in _pack_body
    p = struct.pack('!HHI', self.subtype, self.ethertype, 0) # 4 bytes pad
error: cannot convert argument to integer


Any help is appreciated

Best regards,

Eng Amer Alghadhban

COE

SANS-GCFW

CEH, SCNP, CCNA



 		 	   		  
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