With tunneled client forwarding, gateway policy becomes a consistent enforcement point for branch WLAN clients. Authentication, role assignment, user VLAN anchoring and traffic inspection can be coordinated centrally, while individual branches retain relatively modest local VLAN requirements. Check WAN latency, gateway cluster capacity, tunnel redundancy and failure behavior before choosing this architecture. Bridging all traffic locally can be valid in smaller branches, but it decentralizes the datapath and reduces the central inspection consistency stipulated by the scenario. A branch design using tunneled traffic also requires sufficient WAN capacity and a survivability plan. Centralized inspection is beneficial only when the gateway and transport remain appropriately available.
Bridge mode breaks out traffic at the AP and may enforce policy locally, so adding gateways without tunnel forwarding does not centralize inspection. Standalone APs lack the requested shared gateway datapath. A tunneled design consolidates enforcement at the gateway cluster.
Official HPE references | Configuring VLAN Settings for WLAN SSID in Tunnel and Mixed Mode • AOS-10 Cloud Services | Study-guide topic: Introduction to AOS-10
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