@J_Bob I have altered the switch configurations a little, bit, and added VLAN90 (our management VLAN). I have tagged ports 7&8 on VLAN90 on all switches, plus port 6 on the one switch that has two...

@Somnus (Sorry, was on vacation for a few days) Yes, that is the configuration. Meraki feed is a trunk feed, VLAN1.

We have 4 conference rooms I'm trying to get set up using a combination of SG108e and SG108PE switches. Our enterprise network is mostly Meraki equipment, and there is a Meraki switch feeding the...