Monday, January 27, 2020

Number of VLAN's on small business networks (0-50 users / 0-100 devices)

I've been tasked to design our VLAN setup, which currently is non-existing, for our customers.

During a brainstorming session, we came up with 9 VLAN's based on devices / services:

  • Server VLAN - VM servers
  • Network VLAN - switches, routers, hubs, AP's, ...
  • VoIP VLAN
  • Security VLAN - Camera's, Alarms, garage ports, ...
  • Guest VLAN - Guest Wifi
  • User VLAN
  • Printer VLAN
  • Other VLAN - All which not fall under one of the other categories
  • Management VLAN - Physical Servers, Management Ports on switches, routers,

Looking at some other information about setting up VLAN's there are a lot of different opinions. Some are based on Floor, other on departments, rooms, faculties, ....

We deduced 2 fundamental requirements for this setup so it can be used for all of our customers:

  • Scalability
  • Security

For ease, all VLAN's are a 10.0.xx.0/24. Our customers are not big enough to really worry about complicated IP segmentation. Should we get a customer with different sites, than it will be 10.x.xx.0/24

Our operation manager does not want to overdo it and this is what I believe is the bare minimum, looking at scalability and security as the 2 fundamental requirements.

Asking your 2 cents to see if we should merge some VLAN's or even extend it.



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