Cisco - Ping Labz (Page 5)

Cisco C9800 Fabric Mode and SD-Access Wireless Integration

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.

8 min read Apr 6, 2026

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Cisco C9800 Design Best Practices: The Definitive Guide

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A working Cisco Catalyst 9800 deployment and a good one are very different things. This guide pulls together the design decisions that matter most, platform, HA, tags, RF, security, and upgrades, with the CLI to validate each.

11 min read Apr 6, 2026

Wireless public

C9800 NETCONF and RESTCONF: Automation and Programmability

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The Cisco Catalyst 9800 supports model-driven programmability through NETCONF and RESTCONF. A practical guide to automating WLC configuration and retrieving operational data with YANG models on real wireless deployments.

8 min read Apr 6, 2026

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C9800 Model-Driven Telemetry: Streaming Wireless Data with YANG and gRPC

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Traditional polling consumes bandwidth and lags reality. Model-Driven Telemetry streams real-time wireless data from the C9800 using YANG and gRPC. A guide to MDT on the Catalyst 9800 for dashboards and operational insight.

9 min read Apr 6, 2026

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C9800 CleanAir and Spectrum Intelligence Explained

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Wi-Fi shares spectrum with Bluetooth, microwaves, cameras, and medical devices that do not follow 802.11 rules. CleanAir and Spectrum Intelligence give you visibility into what is actually breaking your C9800 deployment.

7 min read Apr 6, 2026

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C9800 Rogue AP Detection, WIPS, and Client Exclusion

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Rogue access points, evil twins, and client misuse can compromise a wireless network daily. A complete walkthrough of rogue detection, WIPS, and client exclusion on the Cisco Catalyst 9800 for production security teams.

10 min read Apr 6, 2026

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C9800 Wireless Security Deep Dive: WPA3, iPSK, and Enhanced Open

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WPA2 has protected enterprise Wi-Fi for two decades but modern attacks demand stronger cryptography. A deep dive on WPA3, iPSK, and Enhanced Open on the Cisco Catalyst 9800 for CCNP and CCIE level engineers.

13 min read Apr 6, 2026

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Wi-Fi 6 and Wi-Fi 6E on the Cisco Catalyst 9800

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Wi-Fi 6 and Wi-Fi 6E deliver airtime efficiency, density, and 6 GHz channels that change how enterprise wireless performs. A practical configuration and design guide for the Cisco Catalyst 9800 running 802.11ax.

12 min read Apr 6, 2026

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C9800 Radio Resource Management (RRM) Deep Dive

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Radio Resource Management is the brain of Cisco wireless. A deep dive on how RRM on the C9800 tunes power, picks channels, finds rogues, and steers clients, and how to tune it without wrecking your RF.

21 min read Apr 6, 2026

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C9800 Mobility and Inter-Controller Roaming Explained

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Enterprise wireless must support seamless roaming, including across controllers. A guide to mobility types, configuration layers, and inter-controller roaming mechanics on the Cisco Catalyst 9800.

12 min read Apr 6, 2026

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C9800 Client Roaming Deep Dive: 802.11r, OKC, CCKM, and PMKID Caching

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Seamless roaming depends on fast-roaming protocols running under the hood. A deep dive into 802.11r, OKC, CCKM, and PMKID caching on the Cisco Catalyst 9800 and how each one shapes real client experience.

15 min read Apr 6, 2026

Wireless public

C9800 Show Commands: Essential CLI for Monitoring and Diagnostics

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The Cisco C9800 CLI gives you surgical precision the GUI cannot match. A bookmarkable reference of essential show commands for monitoring, troubleshooting, and diagnostics with real output examples.

14 min read Apr 5, 2026