The MikroTik CRS212-1G-10S had a design flaw where the SFPs were pressed right against each other, and there was no cooling fan. As a result, in warmer temperatures I've seen a full load of SFPs get up to 80+ degrees celsius, too hot to handle by hand, and causing packet loss. Other than that I don't recall seeing SFP issues caused by overheating.
We had a customer who asked that the installers put their GPON ONU in an unheated basement for some reason. Even though Ubiquiti rates their CPEs as functioning down to -10 C, the customer saw it losing connectivity on the coldest days (-30 outside) when the nearby thermostat was still +5 C. They fixed it by putting a heater nearby. On Tue, May 14, 2019, 5:03 PM <[email protected] wrote: > I have had more problems with low temp than high over the past 40 years. > > *From:* Trey Scarborough > *Sent:* Tuesday, May 14, 2019 3:41 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Mikrotik Fiber SFP+ > > > with SFPs the temp ratings have a double meaning. The ones rated > industrial actually have better components in them so they tend to have a > better chance of survival in any situation. I wouldn't necessarily worry > about the low end as much as the high end. Its not that hard for a switch > in an enclosed boxto get very hot if not vented. especially with a few sfp > ports in it. > > > On 5/14/2019 8:40 AM, Ken Hohhof wrote: > > What about 10/100/1000 SFPs? Is it worth ordering the custom ones from > FS.com to get the temperature specs down to -40 C? > > > > We’re deploying some CCR1036 at sites that get really cold in winter and > using the 4 SFP slots for additional GigE ports might save having to add a > switch. Or maybe with self-heating the SFPs won’t actually get below 0 C? > That seems optimistic when it’s -25 F in the unheated building. > > > > *From:* AF mailto:[email protected] *On Behalf Of *Trey Scarborough > *Sent:* Tuesday, May 14, 2019 2:51 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Mikrotik Fiber SFP+ > > > > Ok so the best way I have found is to order the custom ones. > > https://www.fs.com/products/37257.html > > If these are going in a Mikrotik that is not in an environmentally > controlled space you will want to choose the -40 to 85c option that you > will probably have much better results. The normal Mikrotik SFPs I believe > are 0 to 70. > > Yes they take some time extra time to be delivered typical time frame is > 3-5 weeks. As well it might cost you %25 more thanks to the import taxes, > but in my mind $3 on a $11 sfp is worth it. > > > > Trey > > > > On 5/13/2019 8:12 AM, Joshua Stump wrote: > > We’ve been using these and they’ve been solid: > > https://www.fs.com/products/75325.html > > > > Joshua Stump > > Network Admin > > Fourway.NET <https://fourway.net/> > > 800-733-0062 > > > > *From:* AF mailto:[email protected] *On Behalf Of *dave > *Sent:* Monday, May 13, 2019 8:59 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Mikrotik Fiber SFP+ > > > > What about 1G SM/MM SFP? > > I get so fed up with mikrotik modules that have temp,speed or just plain > stop working > > > > > On 5/9/19 2:01 PM, Richard Strittmatter wrote: > > https://www.fs.com/products/11591.html > > > > We use a bunch of these.. Dell Coded, Intel coded, generic.. doesn’t seem > to matter, they all work fine for us. > > > > We’ve also used their bidi, and cwdm ones with no issues. > > > > Richard > > > > *From:* AF [mailto:[email protected]] *On Behalf Of * > SmarterBroadband > *Sent:* Thursday, May 9, 2019 1:36 PM > *To:* 'AnimalFarm Microwave Users Group' mailto:[email protected] > *Subject:* Re: [AFMUG] Mikrotik Fiber SFP+ > > > > Which one? > > > > *From:* AF [mailto:[email protected]] *On Behalf Of *Richard > Strittmatter > *Sent:* Thursday, May 9, 2019 10:01 AM > *To:* 'AnimalFarm Microwave Users Group' mailto:[email protected] > *Subject:* Re: [AFMUG] Mikrotik Fiber SFP+ > > > > Fs.com > > > > *From:* AF [mailto:[email protected]] *On Behalf Of * > SmarterBroadband > *Sent:* Thursday, May 9, 2019 11:58 AM > *To:* 'AnimalFarm Microwave Users Group' <[email protected]> > *Subject:* [AFMUG] Mikrotik Fiber SFP+ > > > > Hi > > > > We are using CCR 1036-8G-2S+, what Single Mode LR Fiber 10G SFP+ > compatible modules are you using successfully? > > > > Thanks > > > > Adam > > > > > > > > > -- > > > > Trey Scarborough > > VP Engineering > > 3DS Communications LLC > > p:9729741539 > > > ------------------------------ > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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