In 2010 we installed 10 pcs of GS2002/SP convertors with MM 1Gb SFP modules (AT-SPSX).
From the other side is AT-9000/28SP with same SFPs. In december 2015 the GS2002/SP start to hang
every 2 hours. There is a link between the switch and the GS2002/SP, but the GS2002/SP does not transmit
data. If you restart the switch, the problem is still existing. If you restart the GS2002/SP -
they start to work correctly. And after 2 hours the problem appears again. We changed
the SFP modules. Same problem. We changed the switch 9000/28SP with same model - same problem.
We checked the adapters. They seem to be O.K. And this started to happen on all (10pcs)
the GS2002/SPs on the same time! I can not imagine, that they fail at the same time.
After that, the customer bought a new switch -
x510L-28GSX-50 - end of January 2016. After connecting the media convertors (10 pcs
of AT-GS2002/SP) to the switch using AT-SPSX (both sides), all was O.K. till March 30,2016.
The same problems appear again. The media convertors stop to
work in a period of 2 hours and the only thing that can help is to restart the media convertor.
The switch is with software release 5.4.5-1.1.rel . All of the media convertor started to hang
on the same day but at different time. Most of them - 10 pcs are installed at year 2010. But
there is one new, bought in 2015. Same happens to it also. There are no concerning log
messages on the switch. There are no dropped packets. We tested the fiber. All is O.K.
If you move the GS2002/SP in another vlan - it works fine. I have a wireshark of the traffic
between the restart and the hang of the media convertor in the original vlan. No strange traffic.
What you think?