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I was really hoping that Meraki would've had ready templates to make this simple for me but it definitely appears to be a step in the right direction - thanks Inderdeep!
In direct response to your question: You may be using a straight-through cable for one & the other may be a crossover cable. Either way, you're exceeding 100 meters for the Gigabit cable & some links greater than Gigabit (like your 5Gb) have a maxim...