[pox-dev] dpctl dump-flows

[Priyanka Chauhan]

Hi,

I am new to open flow and SDN.
I have certain queries regarding dpctl utility.

When I executed dpctl utility from mininet VM as "dpctl dump-flows" after creating topology it gives me details of all switches.
But when I tried to execute dpctl utility from mininet terminal as "dpctl dump-flows tcp:127.0.0.1:6633" it gives me following error at controller

[openflow.of_01         ] [None 3]: Exception while handling OpenFlow message:
[None 3] ofp_stats_request
[None 3]   header:
[None 3]     version: 1
[None 3]     type:    16 (OFPT_STATS_REQUEST)
[None 3]     length:  56
[None 3]     xid:     142127887
[None 3]   type: 1
[None 3]   flags: 0
[None 3]   body:
[None 3]       match:
[None 3]         wildcards: nw_tos|tp_dst|dl_dst|dl_src|in_port|dl_vlan_pcp|nw_proto|dl_vlan|tp_src|dl_type|nw_src(/0)|nw_dst(/0) (1110000010000011111111 = 3820ff)
[None 3]       table_id: 255
[None 3]       out_port: 65535
Traceback (most recent call last):
  File "/home/mininet/pox/pox/openflow/of_01.py", line 749, in read
    h(self, msg)
TypeError: 'NoneType' object is not callable


Would appreciate any pointers to resolve this.


Regards
Priyanka




Thanks & Regards
Priyanka Chauhan | Software Engineer- Telecom & Media
Priyanka_chauhan at persistent.co.in<mailto:Priyanka_chauhan at persistent.co.in> | Cell: +91-7385753269 | Tel: +91-712-6692455
Persistent Systems Ltd. | Partners in Innovation | www.persistentsys.com<http://www.persistentsys.com/>







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