I have been deploying around 120 Meraki Branches and the last week I got a serious issue with was too hard to troubleshoot.
I was having issues registering the mx bc I did not saw it online in the dashboard. I tried to see if it had the VPN Tunnels up and I saw that another branch wich is not installed yet was taking up their tunnels.
I blink the leds in the MX in the dashboard with another serial number and I saw it blinking.
Then I realized that I had those switches with certain conflict so I performed a lab with them and now I`m seeing in the switch that they have the same mac address
They won't actually have the same MAC address, the switch will be misinforming you. Perhaps try a different port as there may be a config issue.
Nop It does not. Actually you can see that each sticker has it`s own MAC and SN.
But connecting to the network you can see the same mac address wich belong to one of them.
Mac+1 bc it´s connected to the Uplink 1