Re: 3 MX's( MX250(1 No), MX450(2 No's - HA) in One Network is it possible ??
As @Bruce states you can’t have 3 MXs in the same network you’ll have to create different networks for them all. You also have to ensure they’re all licensed the same ie Enterprise or Advanced Security. You can’t mix the Mx license structure for your Organisation.
Darren O'Connor | uccert.co.uk https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.