Supposing that I need to design an ISP network to serve N subscribers, is it a way to compute the mimimum number of public IP addresses that I need to provision ?
For this I suppose it would be needed to know:
- the max number of sockets that are open by a user
- the average nb of sockets open per user
and use aggressive/standard/conservative approach then to compute the needed nb of IP addresses:
Nb IP = Nb users / [65536 / Nb average of sockets per user]
Nb IP = Nb users / [65536 / (Nb average of sockets per user * 1.x)]
Nb IP = Nb users / [65536 / Nb max of sockets per user]
I have 2 questions:
1) is it sensible what I mentioned above?
2) does anyone have figures from a real network regarding the average and max nb of sockets per user or are there any studies regarding this ?