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Beginner

is the GLC-GE-100FX SFP compatible with WS-C3850-12XS-E?

Guys

I'm trying to connect two 3850 switch stacks across OM1 MM fibre - because of distance i require 100Mb SFPs

Can anyone confirm are the GLC-GE-100FX SFPs compatible with WS-C3850-12XS-E devices?

According to the 'Cisco 100-Megabit Ethernet SFP Modules Compatibility Matrix (Revised: January 25, 2017)' only the WS-C3850-12S will support these.

Does this mean there is no compatible 100Mb SFP?

Many thanks in advance!

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Curtis,

Curtis,

The SFP+ ports on the base XS 3850 models are unfortunately not compatible with 100 Mbps SFPs.

You would have to use either a network module (C3850-NM-4-1G or C3850-NM-2-10G) or else an external device to convert for compatibility with your inter-switch link

Beginner

Many thanks for your help

Many thanks for your help Marvin!

Hall of Fame Master

You're welcome. Please mark

You're welcome. Please mark your question as answered if it has been.

Beginner

Hi Marvin

Hi Marvin

Can you please confirm is MFEFX1 (100BASE-FX) the correct SFP compatible with SG300-10SFP small business switch, to support 100Mb MM fibre 1310 nm wavelength, support up to 2 km?

The MFEFX1 quick start guide document does not list this switch as compatible only the SG300-10, SG300-10P and SG300-10MP devices are listed?

thanks

Does this mean there is no

Does this mean there is no compatible 100Mb SFP?

No, there is no compatible 100M SFP for WS-C3850-12XS-E as WS-C3850-12XS-E switches only have 12 10Gigabit SFP+ ports, which are not auto-negotiate with 100Mb SFPs. So it is better to buy the 10G SFP+ modules

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Beginner

Re: Does this mean there is no

This seems to conflict with the Cisco 100Mb tranceiver compatabillity matrix. 

https://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/compatibility/matrix/100MB_Tx_Matrix.html

3850's show compatability with the GLC-GE-100FX=.  My only issue is the WS-3850-48XS is not referenced at all.  Need clarify from Cisco on that one. 

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