Hi,
  
  
  
   
  
  
   The warning mean that Datapath#ports is not recommended to use directory.
  
  
   But the warning should not be appear in this case.
  
  
   Because perhaps you just use ryu.topology.
   
  
  
   
  
  
   I found out the code of the cause. 
   This should be suppressed.
  
  
   https://github.com/osrg/ryu/blob/v3.29/ryu/topology/switches.py#L545
   
  
  
   
  
  
   I can make a patch to resolve the issue b
   ut I don't know how to hit the above line.
  
  
   My environment don't show the warning. (Mininet w/ Open vSwitch)
  
  
   Can you confirm the patch instead of me?
  
  
   Or please give me more details. (e.g. product name of your openflow 
switch and your procedure)
  
  
    
    
   
  
  
   Regards,
  
  
   Satoshi
  
  
   
  On 2016/01/12 14:30
  俊 赵 <[email protected]> wrote:
  
  
  
   
    Hi,
    
     
    
    
     I got warning with 
"/usr/local/lib/python2.7/dist-packages/ryu/topology/switches.py:545: 
UserWarning: Datapath#ports is kept for compatibility with the previous 
openflow versions (< 1.3). This not be updated by EventOFPPortStatus 
message. If you want to be updated, you can use 'ryu.controller.dpset' or 
'ryu.topology.switches'.
     
       for port in dp.ports.values():
     "
    
    
     
    
    
     I found this message coming from /ryu/controller/controller.py
    
    
     
    
    
     The constraint causing this is "ofproto.OFP_VERSION >= 0x04"
    
    
     
    
    
     Does it mean that if I am using openflow 1.3, the warning message will 
trigger all the time?
    
    
     
    
    
     How can I get rid of this?
    
    
     
    
    
     Thanks.
    
    
     
     
     Zhao Jun
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