> On 23 Mar 2016, at 06:22, Phil Mayers <[email protected]> wrote: > > 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.
in my case, as an (earlier) adopter of nexus 7000 and running 4.x, 5.0, and 5.1 code — i saw numerous cases where a supervisor switchover (during issu, for example) would cause the scheduler to eat itself, and in turn, cause control-plane protocols to drop. most often, this was not a huge issue (more than some logs and small “blips”), but in the case of udld aggressive, i lost connectivity to the rest of the network, because udld was only showing down on the n7k side (not the far end). lots of testing later — udld is only enabled in normal mode — if at all. i agree that udld is more trouble than its worth unless specific corner cases are encountered. q. -- quinn snyder | [email protected]
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