[Mikrotik] Can't get fiber to work on CCR1036-12G-4S

Paolo Di Francesco paolo.difrancesco at level7.it
Tue Dec 30 10:02:47 CST 2014

Hi all

it looks like the interfaces are still having issues.... I have heard 
from a collegue that his CCR got frozen after setting the interfaces at 100M

I really would like to deploy CCRs (for energy reasons) in my data 
center, but it seems they are not yet ready or not fully ready

So the workaround is to test and cross fingers (or have a good remote 
management with serial and power) and discover what you can do and what 
you cannot do (set this interface with this value, etc)

I hope Mikrotik will spend more time making products with less features 
but more stable... we will see....

Just my 2 Euro cents

> I posted this on the MT forum, but I realize that many do not read them, and
> I could really use some help finding an answer
> I have a CCR1036-12G-4S (ROS 6.23 BL 3.20) as my edge router. Actually using
> it as a switch right now but planning to migrate the duties of my 386 based
> unit (ROS 4.16) over to this to save power and eliminate moving parts.
> My Metro Ethernet comes in on multimode fiber and we purchased this card to
> allow us to connect it to the 386 based box.
> http://www.alliedtelesis.com/media/data ... 1sx_ds.pdf
> It has worked great but it is time to update. I have tried twice to move
> this fiber circuit over to the CCR but have been unable to get it to work.
> Yesterday I was thrown off track for several hours by the bug where the
> CCR's LED assignments get boogered and the LEDs for all SFP ports were
> flashing. The forum helped a lot with finding that. They somehow were mapped
> to ETH1.
> So anyway, I did all the normal tests on my fiber jumpers, swapping SFPs etc
> (I tried a Dell one and a Transition Networks one).
> I even had the crew at the data center go over all the patch cables involved
> with getting me over to the demarcation of the fiber (a Ciena layer 3
> switch) just in case. All looked fine. I could never even get the CCR to say
> the link was up until I turned off auto-negotiation on the CCR. I do not
> have access to the Ciena- belongs to fiber provider.
> After that, the link came up and I saw received traffic on the interface.
> But never saw more than 3 transmit packet attempts.
> Plugged fiber back to the 386 unit and things worked fine. Back to the CCR-
> Nothing. I did try several setting changes on the SFP port but nothing
> worked any better. I did make sure the SFP port was added to the bridge with
> the Ethernet ports and I did try all 4 SFP ports.
> We are all stumped. Does anyone have any suggestions? Shouldn't fiber "just
> work", especially if it is just moving from one MT to another?
> I have checked the release notes for all firmware loads and can't find
> anything about the SFP port at all.
> Any Ideas????
> Thanks
> Ralph
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Ing. Paolo Di Francesco

Level7 s.r.l. unipersonale

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