Lan not working when Wan goes down

Networking & Firewalls
1

Good Morning all,

I have a small private school that I manage the network for. We have pfsense and a mix of unifi and edgemax switches. We also have unifi wireless access.
I have 4 vlans the default is .10, the phones are .42, security cameras on .0, and finally student wifi is .22. Each building has its own switch that is statically addressed. All vlans are setup and working in pfsense.

Everything is working normally when we have a Wan connection. However, when we lose the Wan, I am unable to access anything across switches. I cannot it my truenas in the server room, our admin cannot hit the Quickbooks server in my room, etc. I am also unable to get to the pfsense when wan is out

Any suggestions on shy lan stops talking across the campus when Wan goes down?

1 Like
2

Is this pinging by IP, or by hostname? I ask because if you are relying on the Unbound service for internal DNS, it used to be true that the Unbound service would be restarted when the state of the WAN interface changed and this would lead to what would seem to be LAN connectivity issues, but it was actually DNS related.

You know the haiku…

Definitely need to fill in a few gaps in this problem description, most notably if all layers of connectivity are affected, or if it’s DNS and up… and what traceroutes look like before and after.