[j-nsp] Autonegotiation woes with EX-3400

[Gert Doering]

Hi,

On Tue, May 05, 2020 at 12:51:45PM -0400, Norman Elton wrote:
> We've got a sizable deployment of EX-3400s on campus, and have noticed
> that after a reboot, some switches fail to bring their uplink
> connection online. 

Never seen a problem with our 3400s (3rd party SFP+ modules, uplinked
to Aristas mostly, some to Cisco ASR9k).  

18.1R3.3 and 15.1X53-D59.4 here.

> We've long standardized on running autonegotiation, everywhere. Do
> others actually disable autonegotiation on "managed" connections,
> where you're configuring both ends of the link?

Devices or Carriers disabling autoneg are a major PITA and need to
rot in hell.  It's a mandatory part of the standard and should be
treated as such.

(So, no, we never disable autoneg unless talking to something stupid)

gert
-- 
"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             gert at greenie.muc.de
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