[c-nsp] necessity of nowadays

[Phil Mayers]

On 23/03/16 11:53, Saku Ytti wrote:
> On 23 March 2016 at 13:20, Sebastian Beutel
> <sebastian.beutel at rus.uni-stuttgart.de> wrote:
>
>>      That's why i am asking myself whether udld is a residue that nowadays
>> causes more harm than it prevents and should therefore not be used anymore.
>> At least on gigabit and faster links and if there are no really dumb
>> media converters involved.
>>
>> What do you think?
>
> I couldn't agree more, as long as you have hardware liveliness
> detection and unidirectional link detection like you have on Ethernet,
> UDLD will just decrease your availability not increase. As it's
> control-plane feature and on timely transport of BPDU.

Agreed. UDLD was a net problem for us - I can't think of a single time 
it performed it's function, but can recall a handful of outages from 
false-positives.