LLDP is simply used to determine link-state. There is no information gathered from the LLDP packet itself. Read discovery.py for more details.
> Thanks kk yap. > That's why I feel confusion. > > So, using the LLDP packet to probe the environment then what > information will be get? > or what format event will receive in controller. > > Because I really want to know it, but don't have any manner or spec. > can explain it. > > > Regards > Ian > > > 2010/4/15 kk yap <[email protected]>: > >> Hi ian, >> >> If you follow the thread, this proposal was bumped. So, no... the >> controller sends the LLDP. >> >> Regards >> KK >> >> On 14 April 2010 21:41, 曾毓元 <[email protected]> wrote: >> >>> Thanks Martin, >>> >>> So it just to do this work ? and other question, >>> (Q1) What information will be get? Such as, this switch IP, the >>> neighbor node IP, or something. >>> (Q2) This LLDP packet sends by who? Is controller or switch. >>> (Q3) If it is switch to do this work, then it is every switch to do >>> it? or just one ... >>> >>> Because I have ever see this in the openflow switch website. >>> http://www.openflowswitch.org/wk/index.php/OpenFlow_v1.0#Neighbor_Discovery >>> >>> Sorry, I really want to know. >>> >>> Thank you so much. >>> >>> >>> >>> Regards >>> Ian >>> >>> >>> >>> 2010/4/15 Martin Casado <[email protected]>: >>> >>>> That pretty much describes it. Nox uses a very simplistic discovery method >>>> of sending out a unique LLDP packet per connected switch port. On receipt >>>> of an LLDP packet it can then determine the link-state based on the >>>> incoming >>>> port and switch that the packet was received on. >>>> >>>> .martin >>>> >>>> >>>>> Dear all: >>>>> Sorry to bother to everyone. >>>>> But I am very interested about the NOX Controller can use discovery to >>>>> find the complete topology. >>>>> But the related sites are not very detailed description of its >>>>> process. Anyone can tell me in detail how it is done? >>>>> >>>>> research >>>>> http://noxrepo.org/manual/app-index.html#discovery >>>>> >>>>> it only say: >>>>> Discovery sends LLDP packets out of every switch interface. It uses >>>>> received LLDP packets to detect switch links, at which time it >>>>> generates Link_events. >>>>> >>>>> >>>>> Regards >>>>> Ian >>>>> >>>>> _______________________________________________ >>>>> nox-dev mailing list >>>>> [email protected] >>>>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >>>>> >>>>> >>>> >>> _______________________________________________ >>> nox-dev mailing list >>> [email protected] >>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >>> >>> _______________________________________________ nox-dev mailing list [email protected] http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
