Hi
Thanks for the update. Is there a wait period (duration) after which Ryu
tries to reconnect or is it constant? also what is the maximum number of
tries before ryu backsout .
Best Regards
On Wednesday, December 6, 2017, Fujimoto Satoshi <
satoshi.fujimo...@gmail.com> wrote:
> Hi,
>
> Sorry for jumping in.
>
> You don't need to try to reconnect by yourself.
> Ryu always tries to reconnect automatically when the connection was lost.
> And when the connection is re-established, Ryu notifies EventOFPHello and
> EventOFPSwitchFeatures, as same as the first connection.
>
> So, you should wait until the re-establishment, and use the new datapath
> notified by the event for sending the message.
>
> Thanks,
> Fujimoto
>
> On 2017年12月05日 17:18, shahid javed wrote:
>
>
> Hi Iwase
>
> Many thanks for the clarification, can you please guide me on how I can
> reconnect and and get a new data path instance. I tried deleting the old
> instance and getting a new one using the following code:
>
>
> datapath = api.get_datapath(self, datapath.id)
> self.logger.info('datapath=%s', datapath)
>
>
> But I only get None as the output of the above code
>
> Beat Regards
> Fayaz
>
>
> On Tuesday, December 5, 2017, Iwase Yusuke <iwase.yusu...@gmail.com>
> wrote:
>
>> Hi,
>>
>> > " Datapath in process of terminating; send() to 10.0.0.100 discarded "
>>
>> This message shows Ryu could not send a message because the connection to
>> your
>> switch was already disconnected and "send_loop" thread was closed.
>>
>> Please confirm that the connection between controller-switch kept
>> established.
>> If keeping the connection is difficult, I guess you need to wait for the
>> connection re-establishment before sending stats requests.
>>
>> Example:
>>
>> Your App Datapath Your SW
>> | | disconnected |
>> | |--------X-------|
>> | send_msg() | |
>> |------------------>| |
>> | |(*) | (*) output message you reported
>> | | reconnect |
>> | SwitchFeatures ev |================|
>> |<------------------| |
>> | | |
>> Restart
>> stats loop here
>>
>> Please note when reconnecting to your switch, a new Datapath instance
>> will be
>> created, so the stored Datapath instance needs to be replaced by the new
>> one.
>>
>> Thanks,
>> Iwase
>>
>> On 2017年12月05日 00:27, shahid javed wrote:
>>
>>> Hi All,
>>>
>>> I am trying to get switch status updates under a link high load, I have
>>> the following method which sends request to switches to reply with their
>>> stats. The issue I am having is when a packet gets dropped due to high load
>>> I am not able to resend the packet. I tried the --verbose to get the debug
>>> log and I get the following:
>>>
>>> " Datapath in process of terminating; send() to 10.0.0.100 discarded "
>>>
>>> def send_stats_requests(self):
>>>
>>> for switchAddress in range(100,106):
>>>
>>> # I have stored all datapath objects in a dictionary with
>>> key as address of switch
>>> state = self.dp.get(switchAddress,9)[1]
>>>
>>> if state == 0:
>>> datapath = self.dp.get(switchAddress)[0]
>>> ofp = datapath.ofproto
>>> ofp_parser = datapath.ofproto_parser
>>> req = ofp_parser.OFPDescStatsRequest(datapath,0)
>>>
>>> datapath.send_msg(req)
>>>
>>> elif state == 1:
>>> print str(switchAddress) + ' Status Recieved'
>>>
>>> self._timer = Timer(6, self.send_stats_requests)
>>> self._timer.start()
>>>
>>>
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>>>
>>>
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>>>
>>>
>
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