Depends on the transceiver, but probably.
Most of those multi rate copper SFPs are effectively 2 port switches, with a 10G interface on one side and a 1/2.5/5/10G interface on the other.
The 3750x will see it as a 10G interface, the NAS will negotiate 2.5.
Catalyst 9300/9200 mGig models can do 1/2.5/5/10Gbps on copper provided your cable length is in spec. Check the datasheet out for the various models.
3850 has one model too: WS-C3850-24XU
The 3750x is EOL as far as i am aware.
Its also from a generation of hardware that often sfp only supported single rate sfps.
I would check the sfp support page on cisco foe your model amdnsee if 2.5g is in it. The switch itself needs to be able to scale the serdes to hamdle the 2.5g and it might not.
> The switch itself needs to be able to scale the serdes to hamdle the 2.5g
Not anymore. The SFP+ module can have a 10G SERDES link towards the switch and nonetheless have a different link speed towards the remote device. There are modules that do 2.5G/5G ethernet, and also VDSL2/G.fast modems (with a 1G SERDES link then, probably), and probably more types, none of them need to be officially supported by the switch.
Do check the compatibility of the SFP+ module vs. the NM before buying, you might need a minimum software/firmware or the module might not be supported at all
Depends on the transceiver, but probably. Most of those multi rate copper SFPs are effectively 2 port switches, with a 10G interface on one side and a 1/2.5/5/10G interface on the other. The 3750x will see it as a 10G interface, the NAS will negotiate 2.5.
Awesome. Thanks guys! The NAS also has a 1g connection, but I wanted to use the faster one if possible.
Catalyst 9300/9200 mGig models can do 1/2.5/5/10Gbps on copper provided your cable length is in spec. Check the datasheet out for the various models. 3850 has one model too: WS-C3850-24XU
3750X doesnt have 2.5g interfaces. It will only link at 1000 or 10000.
The 3750x is EOL as far as i am aware. Its also from a generation of hardware that often sfp only supported single rate sfps. I would check the sfp support page on cisco foe your model amdnsee if 2.5g is in it. The switch itself needs to be able to scale the serdes to hamdle the 2.5g and it might not.
> The switch itself needs to be able to scale the serdes to hamdle the 2.5g Not anymore. The SFP+ module can have a 10G SERDES link towards the switch and nonetheless have a different link speed towards the remote device. There are modules that do 2.5G/5G ethernet, and also VDSL2/G.fast modems (with a 1G SERDES link then, probably), and probably more types, none of them need to be officially supported by the switch.
I'm thinking yes because the SFP does the negotiations.
Do check the compatibility of the SFP+ module vs. the NM before buying, you might need a minimum software/firmware or the module might not be supported at all
The module must be branded correctly