How To Decide On Network Switches For IP Cameras?

While desgining IP CCTV surveillance system, what are the considerations to be taken in deciding network switches both edge and core. I have seen many jargons of switches like switching capacity, switching throuhput etc. How could we decide on network switches considering data rate of IP cameras.

Is there any realtion between the switching capapcity and the bandwidth of the camera?

Which is the network switch feature that we need to take care of in chossing the right switch for the application ?

Is there any thumprule in this ?

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