The alternative targets RADIUS service resilience, where identity services become campus availability dependencies; redundant switches cannot authenticate users when all RADIUS paths fail. It does not establish the intended RF survey and building materials behavior described in the scenario.

Available port count does not establish available power; a switch can have free interfaces while its aggregate PoE budget is exhausted. Calculate the access-switch PoE budget including device draw and operational headroom. would address poE budget planning, but the reported facts instead point to RF survey and building materials. That change would leave the actual requirement unresolved.

That action—Size the wireless design for peak concurrent airtime demand rather than signal strength alone—is relevant to peak WLAN concurrency. RF coverage establishes reception, whereas channel contention and client airtime demand govern usable capacity in dense spaces. It does not correct the observed RF survey and building materials condition.

WLAN security changes can exclude devices with unsupported cipher, authentication or protected-management-frame capabilities. Validate client security-mode capability and stage a compatible secure WLAN migration. would address WPA3 and legacy clients, but the reported facts instead point to RADIUS shared-secret consistency. That change would leave the actual requirement unresolved.

The alternative targets dynamic role enforcement, where a RADIUS Access-Accept alone does not prove the switch or gateway applied the intended role policy to user sessions. It does not establish the intended RADIUS shared-secret consistency behavior described in the scenario.

That action—Register and assign each device to the correct authorized Central organization and inventory before configuring it—is relevant to central device inventory onboarding. A functioning Ethernet link does not establish cloud-management ownership; onboarding requires the correct device identity, management association and supported connectivity. It does not correct the observed RADIUS shared-secret consistency condition.

That action—Check the routing table and route installation in the source interface's VRF—is relevant to route missing in correct VRF. Separate VRFs maintain distinct forwarding information bases; routes visible in one context do not automatically apply in another. It does not correct the observed asymmetric path enforcement condition.

The alternative targets missing default gateway, where traffic bound for other subnets needs a reachable Layer 3 next hop; a functioning local broadcast domain does not provide routing. It does not establish the intended asymmetric path enforcement behavior described in the scenario.

Authentication and authorization can work while accounting packets are missing; reliable session tracking needs the additional accounting path. Check RADIUS accounting events and collector reachability separately from login authorization. would address RADIUS accounting versus authorization, but the reported facts instead point to asymmetric path enforcement. That change would leave the actual requirement unresolved.

If IP connectivity works but hostname access fails, DNS queries, responses or resolver policy may be broken despite healthy network routes. Compare name resolution with direct IP reachability to isolate the DNS dependency. would address DNS mistaken for routing failure, but the reported facts instead point to AP radio disabled or unsupported channel. That change would leave the actual requirement unresolved.

The alternative targets EAP-TLS trust-chain failure, where EAP-TLS relies on a trusted certificate path; successful network reachability does not bypass expired or unknown issuing authorities. It does not establish the intended AP radio disabled or unsupported channel behavior described in the scenario.

That action—Inspect roam timing, neighbor coverage and security reauthentication behavior during movement—is relevant to roaming reassociation delay. Roaming quality depends on usable overlap and timely client/security transitions; stationary speed tests cannot diagnose roaming interruption. It does not correct the observed AP radio disabled or unsupported channel condition.

Healthy RF and RADIUS reachability cannot compensate for an expired or untrusted certificate that fails the authentication handshake. The indicated result—certificate inventory and alerts show sufficient renewal lead time and successful test authentication after renewal—checks a different mechanism and would not confirm the required UXI application tests outcome.

This would validate SNMP monitoring scope, not UXI application tests. Monitoring requires authorized protocol access and device-supported counters; the existence of a monitoring server alone produces no reliable telemetry. It is therefore insufficient acceptance evidence for the reported condition.

That result—Client reports identify the actual failing association or onboarding stage for affected endpoints—concerns central client health visibility. An AP online indicator does not prove successful client onboarding; stage-specific events narrow diagnosis to radio, identity, addressing or portal dependencies. It can be healthy even while the current UXI application tests problem remains.

This would validate captive portal redirect fault, not ACL deny versus service outage. A guest can associate and receive a lease without completing the portal flow; redirect and pre-auth policy must permit necessary portal dependencies. It is therefore insufficient acceptance evidence for the reported condition.

Endpoints without a supported supplicant need a deliberate alternative classification mechanism, not general unrestricted VLAN access. The indicated result—the registered device receives its restricted role and unregistered devices remain blocked or quarantined—checks a different mechanism and would not confirm the required ACL deny versus service outage outcome.

That result—Test rogue advertisements are blocked while approved router advertisements continue to reach clients—concerns IPv6 router-advertisement spoofing. IPv4 ARP safeguards do not inspect ICMPv6 router announcements; RA protection constrains unauthorized router information on client segments. It can be healthy even while the current ACL deny versus service outage problem remains.

Network device health does not establish application experience; end-to-end synthetic tests expose DNS, transport and service delays along the client path. Use UXI-style synthetic experience testing from representative user locations. would address UXI application tests, but the reported facts instead point to change freeze and backout criteria. That change would leave the actual requirement unresolved.

That action—Monitor and renew EAP-TLS trust-chain certificates before their validity ends—is relevant to certificate expiry monitoring. Healthy RF and RADIUS reachability cannot compensate for an expired or untrusted certificate that fails the authentication handshake. It does not correct the observed change freeze and backout criteria condition.

The alternative targets config drift after manual overrides, where undocumented differences make subsequent upgrades and incident response unpredictable because the managed baseline is no longer authoritative. It does not establish the intended change freeze and backout criteria behavior described in the scenario.

That result—The VLAN interface becomes operational with expected active members and responds to approved gateway tests—concerns SVI down due to VLAN state. A configured SVI cannot act as the client gateway without operational Layer 2 underlay and correct interface state. It can be healthy even while the current OSPF neighbor area mismatch problem remains.

Successful reboot and version display do not establish that all intended policies and interface behaviors survived the change. The indicated result—the post-upgrade configuration matches approved intent and critical wired/wireless service tests pass—checks a different mechanism and would not confirm the required OSPF neighbor area mismatch outcome.

This would validate DNS mistaken for routing failure, not OSPF neighbor area mismatch. If IP connectivity works but hostname access fails, DNS queries, responses or resolver policy may be broken despite healthy network routes. It is therefore insufficient acceptance evidence for the reported condition.

MAC authentication can support devices without a supplicant but is weaker than cryptographic identity, so narrow policy and inventory are essential. Apply authorized MAC-based device classification with restrictive role enforcement where 802.1X is unavailable. would address MAC authentication for headless devices, but the reported facts instead point to SSID-to-forwarding path consistency. That change would leave the actual requirement unresolved.

That action—Provision each gateway with a supported network role that matches its forwarding architecture—is relevant to gateway role deployment. Gateway responsibilities such as tunnel termination and role enforcement depend on the chosen software architecture and supported role. It does not correct the observed SSID-to-forwarding path consistency condition.

The alternative targets wired 802.1X port control, where an AAA server cannot enforce identity on a port whose access-control mechanism is disabled; unauthorized endpoints must receive a restricted result. It does not establish the intended SSID-to-forwarding path consistency behavior described in the scenario.

That action—Balance WLAN channel width against cell density and spectrum reuse—is relevant to high-density channel-width choice. Wider channels can raise peak link rates in isolation yet reduce the number of independent channels available in dense environments. It does not correct the observed guest network isolation requirements condition.

The low-level design should express observable outcomes such as authentication success, endpoint reachability, failover behavior and performance thresholds rather than only equipment names. Translate business requirements into measurable network acceptance criteria before selecting configurations. would address campus requirements and acceptance criteria, but the reported facts instead point to guest network isolation requirements. That change would leave the actual requirement unresolved.

The alternative targets 2.4 GHz interference planning, where the 2.4 GHz band has limited nonoverlapping channel choices in typical regulatory domains, so channel overlap and wide channels intensify contention. It does not establish the intended guest network isolation requirements behavior described in the scenario.

That result—The AP radio state uses legally permitted channels and clients connect under the intended local regulatory settings—concerns AP country-code and RF regulatory setting. Radio operation is constrained by regional rules, and an incorrect country or channel plan can prevent valid operation or break client support. It can be healthy even while the current template variable rendering problem remains.

This would validate LACP bundled links, not template variable rendering. Aggregated links require compatible control and interface parameters; mismatched LACP or VLAN settings can prevent members from joining. It is therefore insufficient acceptance evidence for the reported condition.

A functioning Ethernet link does not establish cloud-management ownership; onboarding requires the correct device identity, management association and supported connectivity. The indicated result—the intended device serial appears once in the approved tenant inventory and reaches an online managed state—checks a different mechanism and would not confirm the required template variable rendering outcome.