Hi Guanyao,

If by huge data, you mean you are jamming the links with data, then
yes that could be the issue.  The LLDP packet can be dropped and cause
intermittent link timeout.

Regards
KK

2009/12/18 Guanyao Huang <gyhu...@ucdavis.edu>:
> In my program the discovery module times out links sometimes, causing
> my program not working well. I will debug to find out details why the
> link fails. Actually they are not supposed to fail. Maybe it's because
> of huge data.
>
> On Fri, Dec 18, 2009 at 8:41 AM, Martin Casado <cas...@nicira.com> wrote:
>> The goal is to detect link failures, so one would hope that would be the
>> most common failure mode.
>>
>>> I assume LLDP packets are sent periodically. If there is no LLDP, what
>>> will be the most possible reason? The controller or the switch is too
>>> busy?
>>>
>>> On Thu, Dec 17, 2009 at 3:07 PM, Martin Casado <cas...@nicira.com> wrote:
>>>
>>>>
>>>> Discovery times out links when no LLDP packets have been received over
>>>> some
>>>> timeout period.  Timer values are documented within discovery.py.
>>>>
>>>>
>>>>>
>>>>> It seems this module will periodically construct the topology. I dont
>>>>> know why it will periodically time_out the links. I want to know in
>>>>> what situations the links will time_out.
>>>>> Thanks.
>>>>>
>>>>> _______________________________________________
>>>>> nox-dev mailing list
>>>>> nox-dev@noxrepo.org
>>>>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>>>>>
>>>>>
>>>>
>>>>
>>
>>
>
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