The Cisco Catalyst 9800 IOS XE WLC uses a tag-based configuration architecture. Three primary tag types are used: site tags, policy tags, and RF tags. The site tag associates an AP with its operational context and contains two specific profile references: the AP join profile (defining AP-level parameters such as NTP, syslog, SSH, LED behavior, and CAPWAP timers) and the flex profile (defining FlexConnect-specific parameters including locally switched VLANs, split tunneling, local authentication settings, and VLAN-ACL mappings). The flex profile within the site tag enables the AP to operate in FlexConnect mode with locally configured switching behavior when WLC connectivity is lost. QoS (Option A) policies are applied at the policy tag level within WLAN policies. NAT (Option B) is not a native profile type in the 9800 tag architecture. VLAN (Option D) configurations are defined within the flex profile or policy profile and are not standalone profile types at the tag level. Understanding the three-tag model is essential for designing and troubleshooting 9800-based deployments. Reference: WLSD Study Guide — Catalyst 9800 Configuration Model, Site Tag Architecture, Flex Profile and AP Join Profile.
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