Hi,
2015-02-17 0:13 GMT+08:00 Padma Jayasankar <[email protected]>:
> Hi,
> I am using the following snippet(based on the code snippet u sent)
>
> OVSDB_REMOTE_ADDR = "tcp:192.168.56.102:6634"
>
Hmm... Was tcp/6634 occupied by other daemon?
Make sure your ovsdb-server is listening on tcp/6634 (or other port you
specified.)
If not, you can issue *one* of the following commands to do so:
ovs-appctl -t ovsdb-server ovsdb-server/add-remote ptcp:6634
ovs-vsctl set-manager ptcp: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', 'eth2',
> 'bfd=enable=true'))
>
> # Run it.
> vsctl.run_command([cmd])
>
>
> The inet address of the remote host in which openvswitch is running is
> 192.168.56.102.
>
> Thanks and Regards,
> Padma V
>
> On Mon, Feb 16, 2015 at 7:47 PM, Wei-Li Tang <[email protected]> wrote:
>
>> 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.
>>
>
>
--
Sincerely,
Wei-Li Tang
RD Engineer, Xinguard Inc.
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