Assuming the legacy switches speak LLDP, I think you'd generally have to
query them using SNMP to get the information you need. This wouldn't be a
straightforward modification of how the current discovery component works
-- it'd be a complete rewrite.
-- Murphy
On Mon, Jul 8, 2019 at 12:27 AM AASIF MNIT wrote:
> I am trying a way to modify lldp packet such that it can discover topology
> in hybrid Sdn(having legacy switches). what fields should I add or delete
> from lldp frame formate?
>
> On Mon, 8 Jul 2019 at 00:52, Murphy McCauley
> wrote:
>
>> So this is the constructor for LLDPSender. The docstring explains what
>> the two parameters are. ttl probably isn't that important.
>> send_cycle_time has to do with how fast discovery is sending packets.
>>
>> You don't usually construct LLDPSenders yourself, though. Normally, the
>> discovery component (class Discovery) constructs them for you -- all you
>> need to do is put "openflow.discovery" on the POX commandline.
>>
>> If you're trying to modify how discovery works or something, you might
>> get better help if you explained what you were actually trying to
>> accomplish.
>>
>> -- Murphy
>>
>> On Sun, Jul 7, 2019 at 5:59 AM AASIF MNIT wrote:
>>
>>> I am working on a security project, and unable to get the function of
>>> the following method which is in discovery.py
>>>
>>> def __init__ (self, send_cycle_time, ttl = 120):
>>>
>>> please help me in understanding this method
>>>
>>>
