Hi

I'm trying to connect an hEX PoE (v6.49.11) to a CSS610-8P-2S+IN (v2.18) using a couple of S-85DLC05D modules and an OM3 patch cable

The general consensus suggests that one should avoid enabling auto-negotiation on either end of the link.

The CSS610-8P-2S+IN’s SFP1+ interface is set to 1G and specifies “no link”; with “link on” showing up from time to time but for a few seconds only

The PBP's sfp port, also set to 1Gbps, states that it's link is 'ok' and running but shows a majority of "rx carrier errors"

So far I haven't been able to get any traffic flowing across the link

Any suggestions and/or explanations why this isn't working as expected ?

regards

yann

Support have just indicated that there won't be a solution to this issue any time soon

It is a known bug to us that the link between CSS610 and devices with QCA9557/QCA9558 CPU (Including RB960) is having frequent link-downs. No other MikroTik devices are experiencing this. In our testing, only S-RJ01 modules did not experience such problems, so maybe this could be a solution for now.
The problem has already been forwarded to our engineers for a solution, but it is impossible to provide any ETA for when it will be solved.

Devices with QCA9557/QCA9558 CPU: hEX PoE / PowerBox Pro, NetMetal 5, Omnitik 5 ac (+PoE), RB922UAGS-5HPacD, SXT SA5 ac, hAP ac

Thanks for posting this. I had the same problem between a CSS610 and hAP ac.

Any update on this issue? I'm having the same problem between my CSS610 and PowerBox Pro.