MikroTik

Good afternoon,

Has anyone been able to get a Huawei or Ericsson SFP 2.5G or 4.25G to work with the 1016 and modulate to that speed?

Thanks

Good afternoon,

Has anyone been able to get a Huawei or Ericsson SFP 2.5G or 4.25G to work with the 1016 and modulate to that speed?

Thanks

SFP 1.2G max
SFP+ 10G max
Have you try to use SFP+ 10G module on non mikrotik device you want try to use?

Huawei or Ericsson SFP 2.5G or 4.25G

those are multirate sonet transceivers for STM16 or most probably CPRI transceivers.
either way you can't use them. the CPRI layer is not ethernet, and multirate modules need rate setting information.
the same is true with FC SFPs: the form factor is the same, the I2C part can be used to retrieve information, but no ethernet transport is possible. all mikrotik devices recognise them, but you can't use it for ethernet.

2.5G SFP module is also known as OC-48 or STM-16. The transmission speeds is up to 2488.32 Mbit/s.
For more knowledge about SONET/SDH data rates: https://community.fs.com/blog/how-much- ... odule.html

those are multirate sonet transceivers for STM16 or most probably CPRI transceivers.
either way you can't use them. the CPRI layer is not ethernet ...

SFPs are theoretically transparent to L1 technology ... so theoretically you can use same SFP for either ethernet or CPRI. In fact, we are using same SFP+ transcievers for both CPRI (Ericsson) and ethernet (Cisco, Juniper, Ericsson) without any problem. And we did use (by mistake) 2.5Gbps SFPs in dumb 1Gbps ethernet switch with SFP without problem as well.

The big question about those is: do SFP and CPE successfully negotiate the connection speed. And another one: does CPE know how to configure SFP properly (to correct line speed)? I guess Mikrotik has some room for improvement in this field.

SFPs are theoretically transparent to L1 technology ... so theoretically you can use same SFP for either ethernet or CPRI. In fact, we are using same SFP+ transcievers for both CPRI (Ericsson) and ethernet (Cisco, Juniper, Ericsson) without any problem.

CPRI tries to re-use several existing transport layers, including IEEE 802.3-2002 (gigabitethernet) and IEEE 802.3-2008 (10GE), but that doesn't mean you can use all of them as you like. there are quite a number of supported bitrates in CPRI, ranging from 640Mbps to 9.9Gbps. obviously rate-depending transceivers cannot be used for anything else. You might had a luck hand by picking the same 10G rate ones for both high speed CPRI and 10GE. rates are detailed on the following pdf on page 51.

http://www.cpri.info/downloads/CPRI_v_4 ... -09-29.pdf

And we did use (by mistake) 2.5Gbps SFPs in dumb 1Gbps ethernet switch with SFP without problem as well.

The big question about those is: do SFP and CPE successfully negotiate the connection speed. And another one: does CPE know how to configure SFP properly (to correct line speed)? I guess Mikrotik has some room for improvement in this field.

to use a multi-rate xceiver you need to negotiate the data rate and also the encoding (page 8 ). this is not supported by routerOS.
https://www.finisar.com/sites/default/f ... eivers.pdf

as it goes for the 2.5Gbps - presumably SONET - transceivers, they do scrambed sonet line encoding which is not compatible with ethernet.
also data rate is influencing the router side communication as well. also, the SFP tells a lot about itself to the device, and ethernet has different compliance codes compared to sonet. (page7)
long story short: it's not going to work.