To get wires of providers to the server (Port vlan) through the internal switch?

Question

Computer networks

Historically, it so happened that the switch of one of the clients is located at one point, and the servers and routers are through 7 walls. Stretching new wires is technically not possible for various reasons. And there were 2 new pieces of iron. And then the idea came to me to plug the provider's wires directly into the internal switch of the company ... to spread the whole thing over the weeds (100 megabit speed from providers and a gigabit switch) to resolve the whole thing on the router. and throw the freed wires on the new iron. Who sees the pitfalls or is this crutch not viable at all?)

Answer 1

There are no special stones. The main thing is that all switches understand VLANs.

Answer 2

The first question is - what if they damage one core on a gigabit cable? It will start at 100mbps and everyone who will be in this cable will have to make room.
If it is possible, then it is worth allocating a couple of whirlwinds for this scheme (main and cold / hot reserve), and pull the rest at your discretion.
It’s even better if you plug in another managed switch from the server side, which, using LACP, will be able, for example, to raise the connection with the main switch and use all the cables as backbones, and the remaining free ports can be used for newly purchased equipment in the server room. Well, these are not the last pieces of iron that will appear there?