topic Re: Adding Meters to datapaths in Software Defined Networking

Adding Meters to datapaths

Pradeep_30 — Sat, 16 Aug 2014 06:14:59 GMT

Hello Experts,

Following code for adding meter is giving me invalid jason error. Could anyone spare some time in identifying the root cause?

meter_band = hp.datatypes.MeterBand(mtype = "drop", rate=10000)
flags = ["kbps"]
bands = [meter_band]
meter = hp.datatypes.Meter(id = 1, command = "add", flags = flags, bands = bands)
api.add_meter(d.dpid, meter)

#********* Error

Traceback (most recent call last):
File "rate_limit.py", line 44, in <module>
    api.add_meter(d.dpid, meter)
File "C:\Python27\lib\site-packages\hpsdnclient\of.py", line 194, in add_meter
    r = self.restclient.post(url, json.dumps(meter.to_dict()))
File "C:\Python27\lib\site-packages\hpsdnclient\rest.py", line 143, in post
    raise_errors(r)
File "C:\Python27\lib\site-packages\hpsdnclient\error.py", line 27, in raise_errors
    raise_400(response)
File "C:\Python27\lib\site-packages\hpsdnclient\error.py", line 43, in raise_400
    data['message'])
hpsdnclient.error.InvalidJson: Invalid JSON format: null. Please refer to the HP VAN SDN Controller JSON

Thanks in advance

Pradeep

Re: Adding Meters to datapaths

Pradeep_30 — Wed, 20 Aug 2014 11:46:40 GMT

Ok. Turned out to be the hp-sdn-client python code had a bug. HP R&D folks lend a helping hand in fixing it. It was nice. I was able to create the meter on physical openflow1.3 enabled switches. The code fails when tried with virtual

Does anyone have experience in working with openflow 1.3 meters on virtual environment( mininet-openvswitch)?

Thank you

Pradeep

Re: Adding Meters to datapaths

sdnindia — Mon, 01 Sep 2014 09:36:45 GMT

Hello Pradeep,

You can use RESTAPI POST /sdn/v2.0/of/datapaths/{dpid}/meters [REST API Doc page 57] to create meter however if you are trying the same with some code[python] , please share the code/error/screen shot in case you are facing some problem.

Thanks,

HP SDN Team