Which SFP module for SG350X stacking?

[Remo]

Hi all

I hope someone can help me because I am going mad trying to find the right answer.

I need to do 2 things:

1. Stack two SG350X switches using fiber or copper.

2. Connect the stack to my core switch, distant about 100m (330 feet), using fiber.

I don't need the configuration part, I only want to understand which SFP Modules to buy.

The supplier quoted me for 2 different transceivers:

MGBSX1 and SFP-10G-SR

I don't understand the difference between the two and I would like to know if I need them both.

The SFP-10G-SR is very expensive compared to the MGBSX1, which is the one I think I only need.

I should be needing 3 modules, 2 for the stack and 1 for the connection to the core.

On the core side everything is already connected.

I have provided a simple drawing (it's terrible, I know) just for a better description.

If anyone can explain this to me I would be very grateful.

Thank you

Remo

[Dan Lukes]

MGBSX1 is for multimode fiber, 1Gbps speed, up to 500m.

SFP-10G-SR is multimode fiber, 10Gbps speed, 26-400m.

The selection of uplink SFP module depends on technology used on the far end. If there's a 10GB multimode module on far end, you can't use MGBSX1 here.

According stack - 1Gbps interconnect for two SG350X sounds so slow to me. You should consider 10Gbps even here.

Note I prefer copper against glass for stacking - e.g. SFP-H10GB-CUxM= (where x=1,3,5 - it's the length of cable in meters). Or MGBT1 if you are sure the 1Gbps is enough for you. Cooper interconnects are cheaper than the fiber one.