The low-level design should express observable outcomes such as authentication success, endpoint reachability, failover behavior and performance thresholds rather than only equipment names. The indicated result—the signed acceptance matrix associates each campus requirement with a measurable test, expected result and responsible owner—checks a different mechanism and would not confirm the required acceptance of WLAN security and mobility outcome.

This would validate RADIUS service resilience, not acceptance of WLAN security and mobility. Identity services become campus availability dependencies; redundant switches cannot authenticate users when all RADIUS paths fail. It is therefore insufficient acceptance evidence for the reported condition.

That result—The identity design includes certificate enrollment, renewal, revocation and a successful mutual-trust authentication test—concerns EAP-TLS certificate lifecycle. EAP-TLS authenticates with certificates, so healthy network transport alone cannot correct absent trust, expired credentials or unmanaged key lifecycle. It can be healthy even while the current acceptance of WLAN security and mobility problem remains.

The alternative targets address pool capacity, where more APs cannot solve exhaustion of the IP-address pool; usable addresses, lease duration and peak devices must be evaluated together. It does not establish the intended change-window and rollback requirements behavior described in the scenario.

Missing uplink, power, VLAN, routing and identity dependencies cause apparently successful device replacements to disconnect applications or clients unexpectedly. Inventory existing physical, logical and service dependencies before finalizing the change sequence. would address inventory and dependency discovery, but the reported facts instead point to change-window and rollback requirements. That change would leave the actual requirement unresolved.

That action—Use appropriately separated 2.4 GHz channels and narrow channel widths for dense coverage—is relevant to 2.4 GHz interference planning. 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 correct the observed change-window and rollback requirements condition.

That action—Inspect matching route prefixes and prefer the longest matching prefix in path analysis—is relevant to longest-prefix route selection. IP forwarding selects the most specific matching destination prefix before comparing less-specific alternatives; a summary route does not override a more-specific match. It does not correct the observed AP radio disabled or unsupported channel condition.

The alternative targets RADIUS server reachability, where a silent RADIUS transport failure prevents normal authentication regardless of whether the user certificate or role rules are correct. It does not establish the intended AP radio disabled or unsupported channel behavior described in the scenario.

A successful authentication indicates identity acceptance, while authorization attributes and local mapping determine permitted services. Compare RADIUS authorization attributes with actual assigned session role and policy. would address incorrect RADIUS role result, but the reported facts instead point to AP radio disabled or unsupported channel. That change would leave the actual requirement unresolved.

That result—The registered device reaches only its designated services and unknown MAC identities are denied or quarantined—concerns MAC authentication for headless devices. MAC authentication can support devices without a supplicant but is weaker than cryptographic identity, so narrow policy and inventory are essential. It can be healthy even while the current SVI inter-VLAN gateway problem remains.

This would validate static route and next-hop reachability, not SVI inter-VLAN gateway. A route must identify the desired prefix and a valid forwarding path; a configured but unresolved next hop does not deliver packets. It is therefore insufficient acceptance evidence for the reported condition.

Edge ports should not accept topology-control messages from unauthorized bridges; BPDU Guard can protect the switching domain by restricting offending links. The indicated result—an unauthorized BPDU on the protected access port triggers the configured protective behavior without altering the campus root—checks a different mechanism and would not confirm the required SVI inter-VLAN gateway outcome.

That action—Validate both allowed and forbidden flows after a security-policy change—is relevant to access-control change verification. Successful application traffic is only half of policy correctness; overbroad authorization can create exposure while the reported symptom appears resolved. It does not correct the observed configuration backup before changes condition.

Release-specific feature and compatibility constraints can break management or forwarding despite a successful image installation. Verify supported firmware interoperability across dependent devices and management tools. would address firmware compatibility dependency, but the reported facts instead point to configuration backup before changes. That change would leave the actual requirement unresolved.

The alternative targets syslog event centralization, where centralized time-stamped records preserve context for multi-device analysis and avoid relying on volatile local event buffers. It does not establish the intended configuration backup before changes behavior described in the scenario.

The alternative targets 5 GHz regulatory channel constraints, where allowed frequencies, radar-detection obligations and client capabilities can vary by country and AP model, so global channel templates may fail. It does not establish the intended high-density channel-width choice behavior described in the scenario.

That action—Choose antenna pattern and placement for the coverage geometry and client distribution—is relevant to directional antenna selection. Directional gain shapes energy into target areas and can reduce unwanted spill, but a poorly aimed directional antenna creates coverage holes elsewhere. It does not correct the observed high-density channel-width choice condition.

An AP advertising a network does not prove that clients can authenticate, receive approved privileges or maintain application continuity while moving. Include authentication, role enforcement and roaming in the WLAN acceptance plan. would address acceptance of WLAN security and mobility, but the reported facts instead point to high-density channel-width choice. That change would leave the actual requirement unresolved.

Endpoints without a supported supplicant need a deliberate alternative classification mechanism, not general unrestricted VLAN access. Verify the authorized non-802.1X identity path and its restricted fallback enforcement. would address MAC authentication fallback fault, but the reported facts instead point to RF interference and retries. That change would leave the actual requirement unresolved.

That action—Check AP radio administrative state, band and regulatory channel support—is relevant to AP radio disabled or unsupported channel. Cloud device online status does not prove every radio is active or that target clients can discover the selected channel. It does not correct the observed RF interference and retries condition.

The alternative targets captive portal redirect fault, where a guest can associate and receive a lease without completing the portal flow; redirect and pre-auth policy must permit necessary portal dependencies. It does not establish the intended RF interference and retries behavior described in the scenario.

That result—Capture and counters show multicast delivery to joined receiver ports without excess traffic to nonmembers—concerns multicast traffic scope. Subscriber tracking lets a switch direct multicast toward active receivers instead of flooding every port, protecting shared access bandwidth. It can be healthy even while the current trust and QoS marking boundary problem remains.

Access port sum can greatly exceed distribution bandwidth, so congestion and burst tolerance must be planned rather than inferred from port speed labels. The indicated result—updated uplink capacity and measured utilization support the busiest expected periods without material drops—checks a different mechanism and would not confirm the required trust and QoS marking boundary outcome.

This would validate roaming voice latency, not trust and QoS marking boundary. Fast reliable handoff requires compatible client capabilities, adequate AP overlap and secure authentication continuity rather than just increasing bandwidth. It is therefore insufficient acceptance evidence for the reported condition.

VLAN configuration creates Layer 2 separation; inter-subnet communication requires appropriate Layer 3 interfaces, addressing and policy. The indicated result—representative clients can reach their configured gateways and only permitted inter-VLAN routes operate—checks a different mechanism and would not confirm the required management connectivity and DNS outcome.

This would validate central configuration audit, not management connectivity and DNS. Management intent, synchronization status and the running device state are distinct; failed changes or local overrides can leave unintended effective configuration. It is therefore insufficient acceptance evidence for the reported condition.

That result—The managed gateway appears under the correct role and forwards sample SSID traffic according to the intended design—concerns gateway role deployment. Gateway responsibilities such as tunnel termination and role enforcement depend on the chosen software architecture and supported role. It can be healthy even while the current management connectivity and DNS problem remains.

This would validate IPv6 router-advertisement spoofing, not wrong Central scope override. IPv4 ARP safeguards do not inspect ICMPv6 router announcements; RA protection constrains unauthorized router information on client segments. It is therefore insufficient acceptance evidence for the reported condition.

Traffic bound for other subnets needs a reachable Layer 3 next hop; a functioning local broadcast domain does not provide routing. The indicated result—the client ARPs or resolves the correct first hop and successfully reaches an approved remote subnet—checks a different mechanism and would not confirm the required wrong Central scope override outcome.

That result—Policy logs or counters identify the matching rule and the repaired rule permits only the approved service—concerns ACL deny versus service outage. An ACL can block selected Layer 4 flows while other connectivity remains healthy; removing all controls is an unsafe shortcut. It can be healthy even while the current wrong Central scope override problem remains.

Real-time applications can fail with adequate average throughput when contention increases delay or jitter; requirement gathering must distinguish traffic classes. Capture application latency, jitter, loss and priority requirements as distinct design constraints. would address critical application traffic profile, but the reported facts instead point to address pool capacity. That change would leave the actual requirement unresolved.

The alternative targets management-plane security, where management interfaces and privileged control operations need narrower access than ordinary client traffic to reduce compromise and configuration risk. It does not establish the intended address pool capacity behavior described in the scenario.

That action—Translate business requirements into measurable network acceptance criteria before selecting configurations—is relevant to campus requirements and acceptance criteria. The low-level design should express observable outcomes such as authentication success, endpoint reachability, failover behavior and performance thresholds rather than only equipment names. It does not correct the observed address pool capacity condition.