[j-nsp] EX4300 SFP+ sometimes recognised incorrectly on boot w/ 14.1X53-D40.8

[Phil Mayers]

All,

This is an odd one - we are having a hard time reproducing it on the 
bench, but we've seen it on production hardware quite a bit.

Some portion of the time, with an EX4300 VC running 14.1X53-D40.8, we're 
seeing VC members boot and mis-detect the SFP/SFP+ module in the PIC (4x 
1/10G SFP).

We'll see modules mis-detected as 1G when they're 10G and thus the 
interface fail to come up; an SFP re-seat or PIC restart is required to 
clear the issue.

I have a very, very vague suspicion that it might be corruption of an 
on-flash file due to sudden poweroff (i.e. removing the plug) but this 
is completely unsubstantiated.

Exact same HW combos (switches, SFPs) were working fine on previous 13X 
releases.

We're still trying to repro and are going to open an initial exploratory 
case with Juniper, but just in case, is anyone seeing SFP/SFP+ 
mis-detected on this HW/SW combo?

Cheers,
Phil