It combines RF excellence gained in 25 years of leading the wireless industry with Cisco IOS ® XE software, a modern, modular, scalable, and secure operating system. The Cisco ® Catalyst ® 9800 Series (C9800) is the next-generation wireless LAN controller from Cisco. C9800 Managed by Prime and Cisco DNA Center.Avoid selecting DFS channels for backhaul.Estimate coverage area using the Cisco Range and Capacity Calculator.Verifying the QoS settings on the Catalyst 9800.Wireless QoS for the Catalyst 9800 Wireless Controller.Moving APs between an AireOS WLC and the C9800.Reduce the need for inter-controller roaming.Inter-controller Layer 2 versus Layer 3 roaming.Returns and Replacements (RMA) replacement procedure for SSO pair.SSO HA with C9800-CL and vMware vMotion.Identify and update friendly rogue AP list.Define appropriate malicious rogue AP rules.EAP request timeout and maximum retries.EAP identity request timeout and maximum retries.Wireless management VLAN mapping to WLAN (via policy profile).Default AP console username and password.Anchoring an SSID and broadcasting it to local APs.Voice Cisco Centralized Key Management timestamp validation.Prune VLANs for FlexConnect mode AP switch ports.APs and Wireless Management Interface VLAN.Preventing traffic leaks for guest or AAA override scenarios.Address Resolution Protocol (ARP) proxy.Spanning Tree Protocol (STP) setting on uplink ports.Primary/secondary/tertiary versus backup primary/backup secondary.Configure predictive join: Primary/Secondary/Tertiary controller.Configuration requiring controller reload or network down.Moving APs between controllers and preserving tags.Cisco Catalyst 9800 Series profile and tag considerations.Cisco Catalyst 9800 Series new configuration model.
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