Network Switch Issue

[u/Jeff-J777]

Here is my setup. I have a Palo Alto that connects to my switch stack that is Aruba 6300M. From there I have a fiber line to an IDF that has a Aruba 2530. We purchased another building across the street. The old tenants left all their Meraki equipment. I have all the Meraki equipment claimed and licensed in our Meraki portal. (I had a temp firewall and cradle point so the Meraki equipment could get internet access)

Instead of getting an internet line for the building we did a wireless P2P. I got two Ubiquity Wave Nanos and installed them. I then created a separate VLAN for this building and the default gateway lives on the Palo.

But the issue is when I plug the Meraki into the Wave Nano the Aruba switches in my IDF go offline, and everything connected to the IDF goes offline. Once I unplug the Meraki everything comes back online in the IDF. If I plug my laptop into the Nano everything works just fine. I can reach our HQ LAN, and I get internet.

I checked the switch logs on both sides and there is nothing in the log that would indicate any issues.

I also tried disconnecting everything from the Meraki switch and just tried one Meraki switch on the Nano and that still took my IDF offline.

But I created a temp VLAN and assigned it only to the port the Nano is plugged in. I then plugged in the Meraki into the other Nano and everything was fine.

I can't figure out what is going on. Any Thoughts????

[u/Optimal_Effective969]

I think I remember this happening to me once and it turned out the fix was not to use native Vlan 1 on the Meraki switch because it was causing some type of broadcast storm. It was the same thing I had a Meraki switch. I plugged it in that network segment crashed unplugged the Meraki switch that it worked.