Advice required on what I need to buy

Hi chrish1984,

I understand the distances now (I got confused before). I did find a solution but we still need to get back to our original problem, qouted below: 

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chrish1984 wrote:

If I procure a 1gb distribution switch, how will this connect to the 10gb port on the core switch?

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I found the model M4100-12GF, this will be the switch under the core switch (if we can use a 1G port from the core switch). For the 4 other switch, I am suggesting models M4100-26G or M4100-50G. If there is no choice but to use the 10G, I'll see if I can find another solution and get back to you on that. 

Thanks,