in our case no, but reseating the sfp does, it sees it there, its just dead
On Wed, Aug 23, 2017 at 1:29 PM, Adam Moffett <[email protected]> wrote: > I'd be curious if disable/enable the interface brings the SFP back to > life, or re-inserting the SFP module. > > > ------ Original Message ------ > From: "Adam Moffett" <[email protected]> > To: [email protected] > Sent: 8/23/2017 2:24:44 PM > Subject: Re: [AFMUG] Brown-outs, Power fluctuations lock up Mikrotik CRS > units > > He's saying the switch is "up" but the SFP's stop communicating until a >> reboot. >> I assumed fiber SFP's. Maybe in a brownout the SFP dies first because >> it's farther from the power supply than other components in the switch. >> >> >> ------ Original Message ------ >> From: "Chuck McCown" <[email protected]> >> To: [email protected] >> Sent: 8/23/2017 2:03:52 PM >> Subject: Re: [AFMUG] Brown-outs, Power fluctuations lock up Mikrotik CRS >> units >> >> Glitches could come in through the ethernet side too. >>> >>> -----Original Message----- From: Sterling Jacobson >>> Sent: Wednesday, August 23, 2017 11:59 AM >>> To: [email protected] >>> Subject: Re: [AFMUG] Brown-outs,Power fluctuations lock up Mikrotik CRS >>> units >>> >>> I had about 10 of these units suffer from the disconnect problem this >>> morning. >>> >>> Some were powered solely from DC wall plug directly to round connector. >>> >>> Some were powered solely from POE injector from included DC wall plug >>> power supply. >>> >>> Some were actually powered by both direct DC round plug AND POE from the >>> Ethernet/Ether1 port. >>> >>> So in essence I've ruled all of those combos out as individual >>> immunity/culprits. >>> >>> Some of these were plugged in to small UPS units from APC or similar >>> brand. >>> >>> Which I know don't do line conditioning, so that doesn't surprise me >>> there. >>> >>> >>> >>> -----Original Message----- >>> From: Af [mailto:[email protected]] On Behalf Of Adam Moffett >>> Sent: Wednesday, August 23, 2017 11:56 AM >>> To: [email protected] >>> Subject: Re: [AFMUG] Brown-outs, Power fluctuations lock up Mikrotik CRS >>> units >>> >>> We have at least 50 CRS and I've never seen that. >>> We aren't using the wall warts though. These are almost all on Traco >>> 48v power supplies plus a 48 to 24 converter. So I have a second layer of >>> conversion between the device and the power. That's just an observation >>> and I don't know that it ought to make a difference. >>> >>> >>> ------ Original Message ------ >>> From: "Sterling Jacobson" <[email protected]> >>> To: "[email protected]" <[email protected]> >>> Sent: 8/23/2017 1:39:43 PM >>> Subject: [AFMUG] Brown-outs, Power fluctuations lock up Mikrotik CRS >>> units >>> >>> I get power glitches from time to time in our city and it never fails >>>> to cause one or more of our CRS units to glitch. >>>> >>>> They appear powered and running, but SFP+ modules don't communicate >>>> until a power cycle. >>>> >>>> Anyone else see this? >>>> >>>> And generally, I don't understand how variations in 110v AC get through >>>> the DC power wart and cause problems to the CRS. >>>> >>>> I mean, shouldn't the conversion from AC to DC inherently clean up some >>>> of the crap of the AC power? >>>> >>>> Or is this a function of the power dipping low enough for brief time, >>>> that the DC also goes almost out then surges back? >>>> >>>> The CRS handles a wide range of DC input voltage, so I thought it would >>>> be more immune to fluctuations of DC voltage too. >>>> >>>> Is that what is causing problems with the CRS maybe? >>>> >>>> >>>> >>> >> >
