But same subnet means layer-2, so no SVIs needed (?)      Just plug them together physically and set the ports at both ends to trunk with matching allowed VLANs (particularly the one you want to use) You will  want to think about how your management path to the Dashboard might function for both switches, in conjunction with your users (same VLAN or different VLAN?)   TBH if you plugged the two together physically, with default config, it would probably do (just) what you've described - leaving aside managment considerations.    You maybe need to add more about what you're actually looking to do. ... View more