Hi,
Thanks a lot. After setting the port for remote access of OVSDB server, it
is working fine.
Thanks and Regards,
Padma V
On Tue, Feb 17, 2015 at 7:40 AM, Wei-Li Tang <[email protected]> wrote:
> 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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