What is Subnet?- Ultimate Subnetting Guide - DNSstuff.com
networking - Can one split up a /29 network into two /30 networks? - Super User
How to configure multiple networks on one router - ITProTV Blog
routing - Dividing a network into subnets using a router - Network Engineering Stack Exchange
networking - I need to connect 2 switches to a router, what's the difference between creating 2 subnets and creating 2 "normal networks" with their own net ip? - Server Fault