Hi, Deni
Of course, you can modify codes as you want, including bridge.py.
And, about the exception you got, the response from OVS may be delayed
due to network delay.
Please try to extend the timeout, e.g. 2, 3, and so on.
Thanks,
Fujimoto
On 2017年05月03日 23:49, Deni Toruan wrote:
Hi Fujimoto san,
Thank you for the information.
To add the port, I didn't use "run_command()" in bridge.py. To be
honest, I didn,t know yet how to use it :). However, to add the port,
I was trying to add function (add_port) in bridge.py. The function is
very similar to the del_port function. It was working, the port was
added in remote OVS. Btw, I was wondering whether it is OK to do
add-port, add bridge, del-bridge through this way? (by adding function
in library bridge.py).
My second question, when I ran the app, I got this message. Would you
mind to let me know whats is the problem?
-------------------------------------------------
Registered VCS backend: git
Registered VCS backend: hg
Registered VCS backend: svn
Registered VCS backend: bzr
loading app ryu/app/test_simple_switch.py
loading app ryu.controller.ofp_handler
instantiating app ryu/app/test_simple_switch.py of SimpleSwitch
instantiating app ryu.controller.ofp_handler of OFPHandler
packet in 8796760143511 00:23:20:99:9b:bc ff:ff:ff:ff:ff:ff 65534
SimpleSwitch: Exception occurred during handler processing. Backtrace
from offending handler [switch_features_handler] servicing event
[EventOFPSwitchFeatures] follows.
Traceback (most recent call last):
File "/home/jedi/Downloads/ryu/ryu/base/app_manager.py", line 290,
in _event_loop
handler(ev)
File "/home/jedi/Downloads/ryu/ryu/app/test_simple_switch.py", line
44, in switch_features_handler
self.add_port('eth1', datapath)
File "/home/jedi/Downloads/ryu/ryu/app/test_simple_switch.py", line
59, in add_port
ovs_bridge.init()
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/bridge.py", line 109, in init
self.br_name = self._get_bridge_name()
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/bridge.py", line 117, in
_get_bridge_name
self.run_command([command])
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/bridge.py", line 105, in
run_command
self.vsctl.run_command(commands, self.timeout, self.exception)
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/vsctl.py", line 1207, in
run_command
self._run_command(commands)
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/vsctl.py", line 1200, in
_run_command
self._do_main(commands)
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/vsctl.py", line 1097, in
_do_main
self._init_schema_helper()
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/vsctl.py", line 984, in
_init_schema_helper
vswitch_idl.OVSREC_DB_NAME)
File "/home/jedi/Downloads/ryu/ryu/lib/ovs/vsctl.py", line 967, in
_rpc_get_schema_json
stream.Stream.open(self.remote))
File "/home/jedi/.local/lib/python2.7/site-packages/ovs/stream.py",
line 222, in open_block
poller.block()
File "/home/jedi/.local/lib/python2.7/site-packages/ovs/poller.py",
line 214, in block
events = self.poll.poll(self.timeout)
File "/home/jedi/.local/lib/python2.7/site-packages/ovs/poller.py",
line 123, in poll
timeout)
File
"/home/jedi/.local/lib/python2.7/site-packages/eventlet/green/select.py",
line 80, in select
return hub.switch()
File
"/home/jedi/.local/lib/python2.7/site-packages/eventlet/hubs/hub.py",
line 295, in switch
return self.greenlet.switch()
Timeout: 1 second
packet in 8796760143511 08:00:27:90:4c:26 08:00:27:c3:76:97 2
packet in 8796760143511 08:00:27:c3:76:97 08:00:27:90:4c:26 65534
packet in 8796760143511 08:00:27:90:4c:26 08:00:27:c3:76:97 2
packet in 8796764093239 00:23:20:c0:9e:76 ff:ff:ff:ff:ff:ff 65534
-----------------------------------
Thank you.
regards,
deni toruan
On Fri, Apr 28, 2017 at 12:56 AM, Fujimoto Satoshi
<satoshi.fujimo...@gmail.com <mailto:satoshi.fujimo...@gmail.com>> wrote:
Hi, Deni
If APIs in bridge.py are not enough to satisfy your demand, you
can use "run_command()" in bridge.py.
"run_command()" calls functions in vsctl.py.
I think you will be able to add/delete bridges by using this
function. :)
https://github.com/osrg/ryu/blob/master/ryu/lib/ovs/bridge.py#L104
<https://github.com/osrg/ryu/blob/master/ryu/lib/ovs/bridge.py#L104>
Thanks,
Fujimoto
On 2017年04月28日 00:51, Deni Toruan wrote:
Hi Fujimoto san,
Thank you very much for the code. I have ran it and it was
working. Thanks, you have saved my days.
Btw, I have another questions related to this issue. I do hope
you will not mind :)
a. When I am trying to add port and add/delete bridge, I did not
find any function related to those commands in library bridge.py.
Is it mean I can't add port using library bridge.py?
b. I saw in library vsctl.py, there is some commands related to
add port and add/delete bridge. Is it mean we must use this
library to add the port?
Thank you for your help.
regards,
deni
On Wed, Apr 26, 2017 at 1:46 AM, Fujimoto Satoshi
<satoshi.fujimo...@gmail.com
<mailto:satoshi.fujimo...@gmail.com>> wrote:
Hi, Deni
In your application, I think there is no one which calls
"ovs_bridge()".
It is better to implement your code in Event Handlers.
For example, Features Reply Handler will be called when your
application gets the Features Reply message
(≒ when the connection to the OVS is established).
For details, you can read the Ryu Book and Ryu API Reference:
https://osrg.github.io/ryu-book/en/html/switching_hub.html#event-handler
<https://osrg.github.io/ryu-book/en/html/switching_hub.html#event-handler>
http://ryu.readthedocs.io/en/latest/ryu_app_api.html#event-classes
<http://ryu.readthedocs.io/en/latest/ryu_app_api.html#event-classes>
And you have to specify the port with string, like this:
ovs_bridge.del_port('eth1')
Now I made a simple code by modifying simple_switch.py and
attached it to this mail.
Please check and try it! :)
Thanks,
Fujimoto
On 2017年04月25日 20:04, Deni Toruan wrote:
Dear Fujimoto san, thank you very much for your information.
I have tried to put the code to the file: simple_switch.py
(as in attachment), and try to run it in Ryu controller
machine.
The code is running, how ever, when I checked in the OVS
machine (VM IP: 10.0.0.5), there is no changes. The port
eth1 is still there.
Is there anything wrong in putting the code to file
simple_switch.py?
thank you.
regards,
deni toruan
On Tue, Apr 25, 2017 at 1:40 AM, Fujimoto Satoshi
<satoshi.fujimo...@gmail.com
<mailto:satoshi.fujimo...@gmail.com>> wrote:
Hi, Deni
You can make a connection by instantiating OVSBridge:
ovs_bridge = OVSBridge(None, datapath.id
<http://datapath.id>, 'tcp:127.0.0.1:6632
<http://127.0.0.1:6632>', timeout=1)
And by the following code, for example, you can delete a
port:
ovs_bridge = OVSBridge(None, datapath.id
<http://datapath.id>, 'tcp:127.0.0.1:6632
<http://127.0.0.1:6632>', timeout=1)
ovs_bridge.init()
ports = ovs_bridge.get_port_name_list()
ovs_bridge.del_port(ports[0])
OVSBridge provides some other APIs.
For details, please check this code:
https://github.com/osrg/ryu/blob/master/ryu/lib/ovs/bridge.py
<https://github.com/osrg/ryu/blob/master/ryu/lib/ovs/bridge.py>
Thanks,
Fujimoto
On 2017年04月24日 16:18, Deni Toruan wrote:
Hi Satoshi san, thank you for your kind reply.
On Mon, Apr 24, 2017 at 5:07 AM, Fujimoto Satoshi
<satoshi.fujimo...@gmail.com
<mailto:satoshi.fujimo...@gmail.com>> wrote:
Hi, Deni
The problem may be caused by that you use
"ovsdb_event" and "ovs_vsctl" at the same time.
If you don't need to monitor the status of OVS, you
should not use "ovsdb_event".
Is it mean I should not use initiation :
"ovsdb_event.EventNewOVSDBConnection)"? So how I will
make (realize) a connection between controller and
OVSDB Server?
Also, you can use "OVSBridge" to control your OVS.
"OVSBridge" calls "ovs_vsctl.VSCtl()" in
__init__(), and wraps some operations including
adding a port.
Thank you for your suggestion.Would you mind to give me
some clue for using the "OVSBridge" and for calling the
"ovs_vsctl.VSCtl()"?
Thanks,
Fujimoto
Thank you.
Regards, Deni
On 2017年04月23日 19:23, Deni Toruan wrote:
Dear all,
Currently, I am trying to make a connection
between Ryu Controller and OVS, and trying to
modify OVS from controller (add bridge, add port,
delete port, etc) dynamically.
Currently, the OVS and Ryu controller can be
connected. They are running in different VM.
However, when I try to run my simple app, it
didn't work. In the code, I am trying to delete
one port that I have already set up from OVS
terminal. I always got this in controller:
----------------------------
d5f55957-26e1-4e24-8b9c-bb15210aa220
New OVSDB connection from system id
d5f55957-26e1-4e24-8b9c-bb15210aa220
New connection from 10.0.0.11:47985
<http://10.0.0.11:47985>
instantiating app None of RemoteOvsdb
BRICK RemoteOvsdb-d5f55957-26e1-4e24-8b9c-bb15210aa220
EVENT OVSDB->SimpleSwitch EventNewOVSDBConnection
EventNewOVSDBConnection<system_id=d5f55957-26e1-4e24-8b9c-bb15210aa220>
d5f55957-26e1-4e24-8b9c-bb15210aa220
New OVSDB connection from system id
d5f55957-26e1-4e24-8b9c-bb15210aa220
instantiating app None of RemoteOvsdb
BRICK RemoteOvsdb-d5f55957-26e1-4e24-8b9c-bb15210aa220
EVENT OVSDB->SimpleSwitch EventNewOVSDBConnection
EventNewOVSDBConnection<system_id=d5f55957-26e1-4e24-8b9c-bb15210aa220>
d5f55957-26e1-4e24-8b9c-bb15210aa220
New OVSDB connection from system id
d5f55957-26e1-4e24-8b9c-bb15210aa220
New connection from 10.0.0.11:47986
<http://10.0.0.11:47986>
---------------------------------
For your information, I customize the code and I
put it in attachment. Please give some hints for
doing this, especially with the code. Thank you.
Best regards,
Deni Lumbantoruan
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