Enterprise Wi-Fi on Cisco Catalyst 9800, the WLC platform that replaced the AireOS generation. Articles tagged Wireless cover the configuration model, AP join, WPA3, FlexConnect, RRM, fast roaming, SSO HA, and IOS XE troubleshooting.
AAA is the foundation of enterprise wireless security. A Cisco Catalyst 9800 RADIUS and AAA configuration guide covering method lists, authentication, accounting, and server groups for scalable wireless policy.
FlexConnect pushes intelligence to the edge of your network, giving remote APs autonomy and cutting WAN dependency. A Cisco C9800 FlexConnect configuration guide covering local switching, ACLs, and survivability.
Moving from AireOS to the Cisco Catalyst 9800 means learning a profile-and-tag WLAN model that trips up even experienced wireless engineers. A practical guide to WLAN configuration on the C9800 with GUI and CLI examples.
Getting the Cisco Catalyst 9800 initial setup right determines how smoothly every later step works. A step-by-step configuration guide covering IPs, NTP, country code, certs, and AP join readiness on C9800-40, C9800-CL, and embedded.
Smart Licensing, DNA Advantage, and Network Advantage pool-based licensing on the Cisco Catalyst 9800 simplifies tracking but confuses newcomers. A plain-English guide to C9800 licensing, tiers, and SLUP.
Cisco C9800 APs discover, authenticate, and join controllers through a structured multi-phase process. A step-by-step breakdown of the AP join process, DTLS establishment, and operational state transitions for troubleshooting.
CAPWAP is the backbone of every Cisco wireless deployment and most engineers treat it as a black box. Understand how CAPWAP works under the hood on the C9800 so you can troubleshoot faster and design smarter.
The Cisco Catalyst 9800 deploys as physical, virtual, cloud, or embedded, and the choice shapes your operations for years. A plain comparison of C9800 deployment models with the tradeoffs that actually matter.
AireOS ran enterprise wireless for 15 years. The Cisco Catalyst 9800 rebuilds the controller on IOS-XE with a modular architecture and a new configuration model. A side-by-side look at what actually changed and why it matters.
The Cisco C9800 configuration model uses tags, profiles, and policies instead of flat global settings. A clear guide to the five core profiles and how they fit together to drive every AP and WLAN on the controller.
The Cisco Catalyst 9800 is a multiprocess, data-model-driven WLC built on IOS-XE. A deep dive into the hardware and software architecture including processes, dataplane, and fault domains for troubleshooting intelligence.
The Cisco Catalyst 9800 replaces AireOS-based WLCs with a modular IOS-XE platform. A platform overview covering every model, from C9800-L to C9800-CL and embedded, so you can pick the right controller for your deployment.