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Capacity, Throughput and High Availability
The controller supports up to 250 access points and 5,000 clients with 5 Gbps baseline throughput. A modular performance license increases capacity to 500 APs, 10,000 clients, and 10 Gbps without hardware changes. High-availability features include stateful switchover (SSO), N+1 redundancy, and in-service software upgrades (ISSU) for seamless network operation【13†L12-L13】. The controller also supports hot patching and cold patching for zero-downtime updates.
Connectivity and Security
The C9800-L-F-K9 includes 2× 10G SFP+ fiber uplinks and 4× 2.5G/1G multigigabit Ethernet ports for flexible northbound traffic. It ships with a 110W AC adapter and consumes 84.5W maximum (with typical SFP and USB load). Built-in security features include Secure Boot, image signing, hardware authenticity checks, Encrypted Traffic Analytics (ETA), WPA3, and Software-Defined Access (SD-Access) readiness, enabling the wireless infrastructure to serve as a first line of defense.
Management, Scalability and Ideal Deployment
Management options include Cisco Catalyst Center (formerly DNA Center), Cisco Prime Infrastructure, and Meraki cloud monitoring. The controller supports up to 4,096 WLANs and VLANs and can be deployed in centralized, FlexConnect, or fabric modes. The C9800-L-F-K9 is ideal for growing business headquarters, distributed branch Wi-Fi, educational campus expansion, and any midsize organization that needs to scale wireless capacity on demand while maintaining always-on resiliency and enterprise-grade security.
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