Changing the Network name on one of our sites has brought down all the switches within the network

[phelimmc]

Looking for some advice please, this evening the network name was changed for one of our sites and it has brought down all switches within that network for some reason. I'm unsure why changing the network name has caused this issue but it has. This is the only change that was made. The network has been renamed to the original name but unfortunately the switches are still down. Any advice please on how to get the switches back online would be appreciated and what has caused this?

[Ryan_Miles]

The MX HA pair in front of all the switches is down. There's no way a name change in dashboard would take down MX's and MS's (or any Meraki device).

What is 172.16.45.229? That is the default 0/0 route on your switches. Your AP's are still up and take that path to the internet. Whatever it is appears to have been connected to core switch 1 port 1 and the port is named IPVPN Primary. I assume something was done upstream on whatever that device is that broke your connectivity.

[Ryan_Miles]

Appears it's all back online? What was the issue?