How to choose the right CISCO switch in addition to the existing one?

Question

Iron

In the process of moving to a new office, the question arose in the correct selection of switches. Now the office uses the SG200-50P model, with 24 PoE ports, however, PoE ports in the new office will obviously be lacking due to the transition to SIP-IP telephony (yealink).
The network will consist of 25 workstations, 30 PoE IP phones, 10 PoE IP cameras and 2 PoE access points. Thus, at least 42 PoE ports are needed. In addition, the office will have about 6-8 servers and a couple of network storages and a couple of network active devices (temperature-humidity control sensors).
Due to the fact that video cameras generate a decent flow of traffic, I would like to properly organize the network in terms of infrastructure. As it is now seen - to cut separate subnets for telephony, for workstations and servers, for video cameras and a video server, for other devices and for guest and internal access points. The next question is - what then should be the optimal network topology and what specific CISCO switch model should be taken, taking into account the already existing l2 switch, in order to get an additional 24 PoE ports on the one hand, and at the same time correctly distribute all traffic and switching? Do I need to take L2 switch or L3? Thanks in advance.

Answer 1

Or stay on the SG200 by purchasing another one with a smaller number of ports (poe is better, otherwise in case of failure of the first one it will be difficult to provide a minimum redundancy). Or go to 2960. But you need three of them and they cost not at all humanely.
L3 at this level is redundant, 10 ip cameras are from 10 to 80 Mbps, not too much for such hardware.
If you really want to take l3, then add a couple more mikrotiks. If your pockets are too tight, then follow the recommendations of the vendor (cisco), that access should be l3 and take 3850.

Answer 2

It may be easier to buy the same SG200 and buy a router for switching between vlan. Any Cisco 1841 will be behind your back. Your traffic, however, is not that big. You can choose a router according to your money shop.nag.ru/catalog/02092.Cisco?page=3