VLAN VS SUBNET

For enthusiasts new to IP Networking terminology, VLAN and IP Subnet terms may look confusing.Many times in technical discussions things like Inter VLAN communication, interchangeably using terms like VLAN A / VLAN B or Subnet A/Subnet B are used. This further adds salt to the wound.

So, let’s have brief on terminologies of VLAN and IP Subnet and how both differ from each other.

A VLAN is a layer 2 term, usually referring to a broadcast domain. Layer 2 is where Post to Post Links II error: Unrecognized type: ”slug” are used.A subnet is a layer 3 term. Layer 3 is the IP layer where IP addresses as used.Although one can have more than one subnet or address range per VLAN, it is recommended that VLANs and Subnets are 1 to 1. In general we will have a 1:1 mapping of subnets and vlans i.e. One subnet per VLAN.

Below table shares the difference between VLAN and Subnet terms –

vlan-vs-subnet

 

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