Tagged VLANS vs Untagged VLANS (what’s the difference?)

In networking when we talk about untagged VLANs, or untagged traffic, we’re referring to ethernet frames that don’t carry any VLAN tag information e.g., traffic that contains no VLAN tag information for a receiving switch port or device to read. In contrast, tagged traffic includes a VLAN tag inside the ethernet frame that can be viewed and read by switches and devices as a way of identifying what VLAN network it belongs to, and then make a forwarding decision based on that information.

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Mikrotik RouterOS: Simple Guest Vlan Configuration

In this guide I will explain one possible way to setup a guest network using a bridge and VLANS on Mikrotik RouterOS. I’ll be using a hAP running v6.45.9.

This guide assumes you already have basic configuration knowledge as we will not be covering topics such as NAT, DNS, Wi-Fi adapter settings, basic firewall rules and/or breakout interfaces. It also assumes that a basic LAN network and bridge exists. The default out the box Mikrotik config should work fine for this.

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