Hi,shahid
Sorry, my previous explanation was little bit incorrect.
The reconnection from Ryu will be made to the switch specified by
'--ofp-switch-address-list' option.
For these, the wait period can be configured by
'--ofp-switch-connect-interval' option (default: 1 sec).
I think there is no limit on the number of attempts reconnection.
For other switches, reconnection will be made by your switches.
Please refer to the documentation of your switch to learn the way to
configure the wait period and attempts limits
Thanks,
Fujimoto
On 2017年12月06日 16:16, shahid javed wrote:
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 <mailto: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 <http://datapath.id>)
self.logger.info <http://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 <mailto: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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