We are planning a network refresh for a multi-site manufacturing and engineering company and I’d like some real world feedback from people running mixed-vendor environments long term. Current environment: Cisco Firepower 1000 series firewalls running ASA Cisco Catalyst switching Meraki APs We are evaluating moving to: Fortinet firewalls Keeping Cisco switching for now Aruba wireless/APs The concern is whether using three different vendors for firewall, switching, and wireless becomes an operational headache over time, especially for: VLAN management troubleshooting firmware lifecycle management VPNs/site to site connectivity visibility/monitoring support/escalation long term scalability Environment details: Multiple offices Manufacturing/production network Remote VPN users Small internal IT team Current Cisco familiarity, but open to modernizing For those running mixed environments like Fortinet + Cisco + Aruba: Has it worked well? Any major regrets?…