2015-02-16 21:01 GMT+08:00 Padma Jayasankar <[email protected]>:
> Hi,
> Thanks for the detailed information. I tried with this code. But i am
> getting some 'protocol error'. i am getting the following error message
>
> File "/home/padma/ryu/ryu/app/simple_switch.py", line 87, in
> _packet_in_handler
> vsctl.run_command([cmd])
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 1100, in run_command
> self._run_command(commands)
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 1096, in _run_command
> self._do_main(commands)
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 1012, in _do_main
> self._init_schema_helper()
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 897, in _init_schema_helper
> vswitch_idl.OVSREC_DB_NAME)
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 889, in _rpc_get_schema_json
> vsctl_fatal(os.strerror(error))
> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/ovs/vsctl.py", line
> 132, in vsctl_fatal
>
> * raise Exception(msg) # not call ovs.utils.ovs_fatal for
> reusabilityException: Protocol error*
>
> Generally when i execute ovs-vsctl commands in the remote host, i have to
> run those commands as super user(sudo). Is this error bcoz of that? if so
> how to execute these cmds as super user? Please clarify.
>
AFAIK there's no need to be a super user to manage remote host if you
connect ovsdb via tcp. I can execute the code as a normal user successfully.
How do you connect to your ovsdb server? What is your remote ovsdb server
address?
>
> Thanks and Regards,
> Padma V
>
>
>
> On Sat, Feb 14, 2015 at 11:41 AM, Wei-Li Tang <[email protected]>
> wrote:
>
>> Hello,
>>
>> Please refer to the following codes which enables bfd for a gre interface.
>>
>> ===
>>
>> from ryu.lib.ovs import vsctl as ovs_vsctl
>>
>> # proto:addr where your OVSDB server listens to.
>> OVSDB_REMOTE_ADDR = "tcp:192.168.0.1:6634"
>>
>> # Initialize a VSCtl instance.
>> vsctl = ovs_vsctl.VSCtl(OVSDB_REMOTE_ADDR)
>>
>> # Define a command instance which is equivalent to
>> # `ovs-vsctl set interface gre0 bfd:enable=true`
>> cmd = ovs_vsctl.VSCtlCommand('set', ('Interface', 'gre0',
>> 'bfd=enable=true'))
>>
>> # Run it.
>> vsctl.run_command([cmd])
>>
>>
>> 2015-02-11 14:46 GMT+08:00 Padma Jayasankar <[email protected]>:
>>
>>> Hi,
>>> Thanks for the information. I went through the files in ryu/lib/ovs. I
>>> thought that i have to use vsctl.py as i have to run ovs-vsctl set
>>> interface command. But i couldn't understand , hoow to use that? Can u give
>>> some more information on that.
>>>
>>> Thanks and Regards,
>>> Padma V
>>>
>>> On Tue, Feb 10, 2015 at 7:22 AM, Wei-Li Tang <[email protected]>
>>> wrote:
>>>
>>>> 2015-02-09 22:30 GMT+08:00 Padma Jayasankar <[email protected]>:
>>>>
>>>>> Hi,
>>>>> Is it possible to enable bfd for a switch from the controller? I
>>>>> have to do this dynamically for my project. I am able to do this
>>>>> statically
>>>>> using ovs-vsctl commands? Is there any way to do it dynamically from the
>>>>> controller.
>>>>>
>>>>
>>>> Hi,
>>>>
>>>> Are you using an openvswitch? You may do this through OVSDB and take a
>>>> look at ryu/lib/ovs/ which is an OVSDB interaction library for Ryu.
>>>>
>>>>
>> --
>> Sincerely,
>>
>> Wei-Li Tang
>> RD Engineer, Xinguard Inc.
>>
>
>
--
Sincerely,
Wei-Li Tang
RD Engineer, Xinguard Inc.
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