Re: 25G SFP28 capable of rate-adaption down to 1G?

[Randy Carpenter <rcarpen () network1 net>]

Are you talking about an SFP28 module that can link at 25Gb, but also 1Gb?

We just put 1Gb SFPs in the SFP28 ports and they work fine. I have not seen a single module that does both, but 
admittedly, I have not looked too hard, as the 1Gb modules are so cheap.

Or, are you talking about a module that presents as 25Gb to the switch, but 1Gb to the client device?


thanks,
-Randy


----- On Jan 31, 2022, at 1:05 PM, Bill Woodcock woody () pch net wrote:

> Hey, does anyone know of an SFP28 capable of rate-adapting down from 25G on the
> cage side down to 1G on the line side?  Can be copper or fiber on the line
> side, I don’t care, my interest is in the chip inside.
>
> Thanks,
>
>                                 -Bill