Connecting between Dell switches

Question

Dear all, I have this problem: I am trying ot create a connection between 2 Dell S4112T-ON switches and on the opposite side I have 4 stacked Dell N1148T-ON switches. The cables are 40G QSFP+ to 4x10G SPF+ made by FS ( www.fs.com ). The S4112T are connected via port 15 (QSPF28) port and the opposite side is via port 27 (10Gb) port on the N1148T-ON. For some reason non of the switches sides can't 'see' the connection between and can't recognize the optic fiber cable. The engineers from FS told me that: The port on S4112T is 100Gb and maybe it's not supporting the 40Gb QSFP+ cable that we are trying to use. Any advices? Thank You

DELL-Josh Cr · Answer

Hi MartinVidas, How long is the cable? Is it a passive or active cable? We have 40->4X10 breakout cables.

MartinVidas · Answer

Hi Josh,

see the answer, that I've got from FS:

"After checking with our engineers, Dell N1148T-ON switch only has 10G ports while Dell S4112T-ON switch has 100G ports.

The two switches couldn't be connected via DAC & AOC."

In this case I don't know if breakout cable will work (I have and checked - it is not recognized in the switch itself).

We tried to connect it with 10m fiber-optic cable.

Thank You

Networking General

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