One switch for the entire enterprise network (for 40 machines): how best to organize the hierarchy of the future network?

Question

Computer networks

Good day (or night: everyone has different biorhythms), dear colleagues!
We have about forty machines at the enterprise. The enterprise is state-owned (in one building on seven floors), and the number of cars is growing slowly - up to fifty and higher, it will grow no earlier than in two years. Now the network is a complete mess: a network (or several) can be launched on one wire on two (or even one, but this was eliminated by partial re-laying) pairs, as well as one or two telephone lines. The last hubs were removed about a year ago, just after coming to work. The previous admin, of course, did not leave documentation for this happiness. Accordingly, for the coming summer (or, perhaps, earlier), the question arose of a complete re-laying of the network at the facility, bringing it to a full-fledged gigabit state.
The question is how best to organize the hierarchy of the future network. I propose to make one switch (to start with HP for 48 ports) at the rate of "one port - one machine" and lay cables to the workplaces with a margin.
The problem is that "we ourselves are not local" - I am familiar with networks, unfortunately, insofar as, therefore, even for myself I am not able to correctly argue such a decision, and I strongly doubt the literacy of laying cables to switches on the floors: they are created narrow necks, and optics are expensive and it is not known how justified the solution is. Therefore, I ask you, dear colleagues, to explain to the lamerthe pros and cons of this configuration, except for the obvious: high price (these are one-time costs, and the budget can be allocated quite large) both during the initial installation and in the future (I know about the total price of a stack of two switches of almost 200k). Also, if you find an opportunity, please suggest alternative solutions.
Thank you all very much in advance.

Answer 1

1 gigabit switch, both the core and ports 8-16, and there is a floor switch on the floor,
fewer wires and it's easier to look for the causes of a LAN breakdown

Answer 2

The question is clear. But you need to take into account the maximum bandwidth of the piece of iron. I assure you that a piece of iron that can switch all 48 ports at gigabit speed .... will cost as much as your entire building. The presence of ports does not yet give her such an opportunity. It will be more optimal to take pieces of iron with 10 gigabit uplinks. And connect the pieces of iron through them to each other.
If the wires are not a pity, then drag everyone directly to the server room.
There is another option. But it requires brains, suppose the traffic is generated mainly by bukhs. Here we will put them on gigabit. Let's say there are 7 of them. So you can meet the WS-C2960G-8TC-L. And we'll put the rest on something simpler. I'm leading to something. For this piece of iron you will give 30,000 rubles. And for WS-C2960S-48TD-L, 48x100/1000 + 2x1000 + 2xSFP+, Stack, Base is already almost 120000. So if the question is not worth the money ... buy the latter. Learn only one thing. If it burns.... =D

Answer 3

1. Decide on the distance from the hardware to the PC, if more than 100-120 meters - in any case, you will have to install additional switches.
2. You don’t need 10G, you won’t have so much traffic from 50 employees
3. Any modern switch will shovel traffic at port speed without any problems.
For hardware, look in the direction of the cisco, there are a lot of people who worked all the problems are known, etc.