Help: How to solve this bug in riplpox

[xuyangwu]

I'm a beginner for mininet and want to use riplpox as the controller, after the installation, I type
~/pox/pox.py riplpox.riplpox --topo=ft,4 --routing=rand--mode=reactive
and then type
~/riplpox$ sudo mn --custom ~/ripl/ripl/mn.py --topo ft,4 --controller=remote --mac
in a second window, but there is a bug like this

ERROR:core:Exception while handling OpenFlowNexus!PacketIn...
Traceback (most recent call last):
File "/home/mininet/pox/pox/lib/revent/revent.py", line 231, in raiseEventNrors
return self.raiseEvent(event, _args, *_kw)
File "/home/mininet/pox/pox/lib/revent/revent.py", line 278, in raiseEvent
rv = event._invoke(handler, _args, *_kw)
File "/home/mininet/pox/pox/lib/revent/revent.py", line 156, in _invoke
return handler(self, _args, *_kw)
File "/home/mininet/riplpox/riplpox/riplpox.py", line 344, in _handle_Packe
self._handle_packet_reactive(event)
File "/home/mininet/riplpox/riplpox/riplpox.py", line 246, in _handle_packeeactive
self._flood(event)
File "/home/mininet/riplpox/riplpox/riplpox.py", line 206, in _flood
for sw in self._raw_dpids(t.layer_nodes(t.LAYER_EDGE)):
File "/home/mininet/ripl/ripl/dctopo.py", line 135, in layer_nodes
nodes = [n for n in self.g.nodes() if is_layer(n)]
File "/home/mininet/ripl/ripl/dctopo.py", line 133, in is_layer
return self.layer(n) == layer
File "/home/mininet/ripl/ripl/dctopo.py", line 115, in layer
return self.node_info[name]['layer']
AttributeError: 'FatTreeTopo' object has no attribute 'node_info'

thanks for giving guidance

[harpresing]

Hi,
I'm facing the same problem, were you able to resolve it?

[HelloChristie]

I face this problem,too
Did you find some solutions?

[huiminyan2017]

Hi, did you guys solve this problem? Is it related to the version?

[chvillal]

Hi, I have same problem. Is there a workaround?

[huiminyan2017]

I worked around it by modify the function:
def layer(self, name):
'''Return layer of a node

    @param name name of switch
    @return layer layer of switch
    '''
    return self.g.node[name]['layer']
    # return self.node_info[name]['layer']