[ovs-discuss] misc.packet_dump issue.

[Ben Pfaff]

I don't think this is an OVS problem.  You should probably ask about it
on a POX or mininet mailing list.

On Thu, Nov 02, 2017 at 01:28:28PM +0000, Lewis Koh via discuss wrote:
> Reference to Using POX components to create a software defined networking application -> Start POX
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> Using POX components to create a software defined networking application
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> When network engineers are learning the concepts of software defined networking and SDN controllers, they may wa...
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> I'm running betta and I'm trying this command below
> $ sudo ~/pox/pox.py forwarding.l2_learning 
> openflow.spanning_tree --no-flood --hold-down 
> log.level --DEBUG samples.pretty_log 
> openflow.discovery host_tracker 
> info.packet_dump
> 
> I encounter the following message
> Module not found: info.packet_dump.
> I found that there is no "info" folder in POX folder but there is a packet_dump.py in "misc" folder.  I changed the command to run misc.packet.dump but my error message changed to this:
> mininet at mininet-vm:~/pox/pox$ sudo ~/pox/pox.py forwarding.l2_learning   openflow.spanning_tree --no-flood --hold-down   log.level --DEBUG samples.pretty_log   openflow.discovery host_tracker   misc.packet_dump    POX 0.1.0 (betta) / Copyright 2011-2013 James McCauley, et al.[openflow.spanning_tree ] Spanning tree component ready[host_tracker           ] host_tracker ready[misc.packet_dump       ] Packet dumper running[core                   ] POX 0.1.0 (betta) going up...[core                   ] Running on CPython (2.7.6/Oct 26 2016 20:30:19)[core                   ] Platform is Linux-4.2.0-27-generic-x86_64-with-Ubuntu-14.04-trusty[core                   ] POX 0.1.0 (betta) is up.Task <OpenFlow_01_Task/tid7> caused exception and was de-scheduledTraceback (most recent call last):  File "/home/mininet/pox/pox/lib/recoco/recoco.py", line 276, in cycle    rv = t.execute()  File "/home/mininet/pox/pox/lib/recoco/recoco.py", line 94, in execute    return self.gen.send(v)  File "/home/mininet/pox/pox/openflow/of_01.py", line 842, in run    listener.bind((self.address, self.port))  File "/usr/lib/python2.7/socket.py", line 224, in meth    return getattr(self._sock,name)(*args)error: [Errno 98] Address already in use
> How should I debug this??

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