Practical subnetting and VLANs
Calculate subnets quickly, plan an address scheme for an office or data centre, and separate traffic with VLANs.
- Intermediate
- Level
- 3
- Lessons
- 4 min
- Study time
Course content
- 1. Subnetting without a calculatorSubnetting looks like maths, but in practice you only need one table and one habit.1 min
- 2. Planning an address schemeA good address plan is boring and predictable. A bad one causes overlaps that surface years later, usually when you connect a VPN.1 min
- 3. VLANs explainedA VLAN splits one physical switch into several separate networks. Devices in different VLANs can't talk to each other unless a router or firewall allows it.2 min