Cisco Catalyst 9400

The Cisco Catalyst 9400 series comprises modular, stackable switches for enterprise access/aggregation layers, offering 4, 7, and 10-slot chassis (C9404R/7R/10R) for high scalability . They support a wide range of line cards for Gigabit Ethernet, multi-gigabit copper (up to 10G), and fiber interfaces, with robust PoE+/UPOE+ capabilities
. As a foundational building block for Cisco SD-Access, they are engineered for high availability, security, and network segmentation in large campus environments .