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.
If you have tried to build a wireless lab in Cisco Modeling Labs, you have probably hit the same wall everyone hits: you drop a Catalyst 9800-CL on the canvas, configure it perfectly, and show ap summary stubbornly reports
A wireless LAN controller, or WLC, is the device that turns a pile of access points into a managed wireless network. Without one, every access point is an island you configure and troubleshoot by hand. With one, the access points
Every Cisco AP mode explained: Local, FlexConnect, Monitor, Sniffer, Rogue Detector, SE-Connect, Bridge and Mesh. What each does and when to use it.
This is Part 2 of the PingLabz 9800 Wireless Labs series. In Part 1 we built the topology in Cisco Modeling Labs: a 9800-CL, a small IOL XE campus underneath it, a bridge to a physical AP, and CML&
This is Part 1 of the PingLabz 9800 Wireless Labs series. Over the next several posts (and matching YouTube videos), we build a complete Catalyst 9800-CL wireless environment from scratch in Cisco Modeling Labs - starting with an empty canvas
What a Cisco WLC does: split-MAC architecture, CAPWAP tunnels, the AP join process, AireOS vs Catalyst 9800, the profile-and-tag config model, and FlexConnect.
Wi-Fi 7 is shipping and Cisco has a full 802.11be AP lineup, but the real question is whether your environment, wiring, and refresh timing justify the spend now. A practical upgrade decision guide for wireless architects.
Backup, restore, and upgrade on the Cisco C9800 look simple until they are not. A full lifecycle walkthrough with Install mode, ISSU, SMU, N+1 rolling upgrades, and the gotchas that never fit on a GUI tooltip.
In an SD-Access fabric, the Cisco C9800 stops being the wireless data-plane anchor. Client traffic rides the VXLAN overlay from fabric-enabled AP to edge switch. Here is how fabric-mode wireless actually works and why you would adopt it.
Local mode and FlexConnect are the two fundamental ways a C9800 hands off client traffic, and the wrong choice shapes WAN use, failure behavior, VLANs, ACLs, and AAA. A per-site decision framework for wireless designers.
RF punishes shortcuts. Bad AP count, wrong channel plan, or a misjudged power envelope will haunt a wireless design for years. A practical Cisco C9800 RF design guide covering site survey, channel planning, and 2.4, 5, and 6 GHz power tuning.