CRS520 and DWDM tunable optics?

Hardware MikroTik hardware general
1

I’m looking at purchasing QSFP28 Tunable DWDM optics for a CRS520-4XS-16XQ-RM. The vendor sells the optics in “CMIS” or “SFF-8636” flavors.

My questions are:

  • Should I purchase the CMIS or SFF-8636 type optic?
  • Does RouterOS support changing the channel/wavelength on Tunable (QSFP28) DWDM optics using either management standard? Or should I purchase an external tool to tune the optic?

Thanks!

2

RouterOS has no configuration interface for tunable optics. It might also have issues with the power draw from those kind of modules.

3

I was thinking that might be the case. I’ll use an external tool to tune the optic.

That said, I’ve looked and I could not find any documentation on optic power budgets.

Is there a reference available for how much power is available per port?

Thanks.

4

Followup after discussion with Mikrotik support:

Re tuning optics:

… we are interested in such functionality and are looking into the possibility of implementing a variant in the near future.

Re SFF-8636 or CMIS:

The QSFP ports of our devices support both CMIS and SFF-8636 management. The CMIS implementation is relatively new for us, in your case we suggest to follow SFF-8636 for now.