Network configuration

[TakovGnomon]

Trying to build a lab with wireless APs connecting to LAN and LAN to APs. I made one gateway and one repeater. I connected the repeater to a switch but when I plugged in my PC to the switch I cant get in to the network. it is saying on my Ethernet. Unauthenticated.

It seems it is trying to use vlan 206. do I need to add that Vlan to the layer 3 switch where my gateway is connected?

[Brash]

If the computer is in VLAN 206, you will need a VLAN interface declared for that somewhere (either on the switch or an upstream router/MX).
If you do have VLAN 206 setup upstream, you might have some VLAN tagging mismatches.

Do you have a topology diagram?
Is the PC getting an IP address when plugged in? And if so, can it ping the default gateway?

Take a look at the example topology in the following doc

https://documentation.meraki.com/MR/Wi-Fi_Basics_and_Best_Practices/Extending_the_LAN_with_a_Wireles...

Also keep in mind that by default, only one VLAN is extended.

Multiple VLANs can be extended on MR firmware 28.1 and above but require Meraki support to enable.