Hi, Shahid
Possible causes are:
* The port number in the application is inconsistent with that set for OVS
* Firewall between controller and OVS is blocking communication
* Packet is lost due to network high load
I think the problem is not due to Ryu.
Please check your configuration and network.
Thanks,
Fujimoto
On 2017年12月08日 00:34, shahid javed wrote:
Hi All,
I am trying to set up queues on port 'eth0' of switch 's3' using the
following code:
from ryu.cfg import CONF
from ryu.lib.ovs import bridge
config_path = "tcp:10.0.0.103:6640 <http://10.0.0.103:6640>"
ovsdb_bridge= bridge.OVSBridge(CONF, datapath.id <http://datapath.id>,
config_path)
ovsdb_bridge.set_qos("s3-eth0",
queues=[{'min-rate': '10000', 'max-rate': '100000'},{'min-rate':
'500000'}],
max_rate="100000000")
switch 's3' address is '10.0.0.103' and my controller is at address
'10.0.0.1'. I am using Ryu(4.18) and OpenFlow 1.3 I am also opening
the manager for the port eth0 at the switch 's3'
using " ovs-vsctl set-manager ptcp:6640 " in xterm
I am getting the following error:
Connection refused
hub: uncaught exception: Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line
60, in _launch
return func(*args, **kwargs)
File
"/usr/local/lib/python2.7/dist-packages/ryu/app/simple_switch_13.py",
line 200, in _monitor
max_rate="100000000")
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/bridge.py",
line 401, in set_qos
self.run_command([command_qos, command_queue])
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/bridge.py",
line 105, in run_command
self.vsctl.run_command(commands, self.timeout, self.exception)
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 1207, in run_command
self._run_command(commands)
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 1200, in _run_command
self._do_main(commands)
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 1097, in _do_main
self._init_schema_helper()
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 984, in _init_schema_helper
vswitch_idl.OVSREC_DB_NAME)
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 976, in _rpc_get_schema_json
vsctl_fatal(os.strerror(error))
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py",
line 140, in vsctl_fatal
raise Exception(msg) # not call ovs.utils.ovs_fatal for
reusability
Exception: Connection refused
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