Ping Labz (Page 6)

C9800 CleanAir and Spectrum Intelligence Explained

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

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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

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C9800 Debug Commands Reference: What to Run and When

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Debugging the Cisco C9800 is not AireOS. IOS-XE gives you three distinct debug methodologies with very different overhead and output. A reference guide to when to use debug commands, conditional debugs, and trace archives.

10 min read Apr 5, 2026

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C9800 RF Troubleshooting: Coverage Holes, Interference, and Channel Issues

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Coverage holes, interference, and channel saturation quietly kill wireless performance. A systematic Cisco C9800 RF troubleshooting methodology covering RRM, DCA, TPC, and the show commands that tell the real story.

13 min read Apr 5, 2026

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C9800 High Availability Troubleshooting: SSO Failover and Sync Issues

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When SSO or N+1 redundancy breaks on the C9800, wireless goes dark fast. A troubleshooting guide for failover, redundancy port faults, and configuration sync failures on the Cisco Catalyst 9800.

11 min read Apr 5, 2026

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C9800 Roaming Issues: Diagnosing and Fixing Fast Roaming Problems

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Sticky clients, dropped VoIP, and failed fast-roaming hurt wireless user experience. A practical Cisco C9800 roaming troubleshooting guide covering 802.11r, PMKID caching, and client exclusion diagnostics.

15 min read Apr 5, 2026