The alternative targets SSID role and VLAN assignment, where authentication success is not the same as authorization; WLAN roles and VLAN selection determine where the user can forward traffic. It does not establish the intended guest captive-portal flow behavior described in the scenario.

Client frames received untagged are placed in the port's access VLAN; a healthy physical link cannot compensate for wrong Layer 2 membership. Assign the correct access VLAN and verify the port's effective untagged membership. would address access port VLAN membership, but the reported facts instead point to guest captive-portal flow. That change would leave the actual requirement unresolved.

That action—Validate client security-mode capability and stage a compatible secure WLAN migration—is relevant to WPA3 and legacy clients. WLAN security changes can exclude devices with unsupported cipher, authentication or protected-management-frame capabilities. It does not correct the observed guest captive-portal flow condition.

VLANs divide Layer 2 domains, whereas VRFs maintain separate Layer 3 routing contexts; any intentional crossing needs controlled connectivity. The indicated result—the route inventory shows distinct VRF tables and only documented cross-VRF communication paths—checks a different mechanism and would not confirm the required address pool capacity outcome.

This would validate campus requirements and acceptance criteria, not address pool capacity. 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 is therefore insufficient acceptance evidence for the reported condition.

That result—Predictive and on-site measurements identify weak areas and confirm intended application-level RF coverage—concerns RF survey and building materials. Propagation and attenuation vary with walls, shelving and device environments; a diagram alone cannot establish coverage or service quality. It can be healthy even while the current address pool capacity problem remains.

That result—Predictive and on-site measurements identify weak areas and confirm intended application-level RF coverage—concerns RF survey and building materials. Propagation and attenuation vary with walls, shelving and device environments; a diagram alone cannot establish coverage or service quality. It can be healthy even while the current peak WLAN concurrency problem remains.

A planned change must include dependencies and a reversible path because a correct configuration can still disrupt business services during transition. The indicated result—the approved implementation plan states change windows, rollback thresholds, recovery owner and end-to-end validation steps—checks a different mechanism and would not confirm the required peak WLAN concurrency outcome.

This would validate management-plane security, not peak WLAN concurrency. Management interfaces and privileged control operations need narrower access than ordinary client traffic to reduce compromise and configuration risk. It is therefore insufficient acceptance evidence for the reported condition.

That result—The route inventory shows distinct VRF tables and only documented cross-VRF communication paths—concerns routing and VRF separation. VLANs divide Layer 2 domains, whereas VRFs maintain separate Layer 3 routing contexts; any intentional crossing needs controlled connectivity. It can be healthy even while the current access/distribution hierarchy problem remains.

This would validate failure-domain isolation, not access/distribution hierarchy. Two logical paths do not provide independent availability when they share a single cable route, power supply or upstream component. It is therefore insufficient acceptance evidence for the reported condition.

Missing uplink, power, VLAN, routing and identity dependencies cause apparently successful device replacements to disconnect applications or clients unexpectedly. The indicated result—a validated inventory identifies uplinks, upstream routes, address services, identity services and critical endpoint relationships—checks a different mechanism and would not confirm the required access/distribution hierarchy outcome.

Uncontrolled Ethernet loops replicate broadcasts and destabilize MAC learning; redundant links require a mechanism to block or logically aggregate unsafe cycles. The indicated result—STP topology is stable, with intentional root and port roles and no recurring MAC-flap or broadcast-storm indications—checks a different mechanism and would not confirm the required VSX peer synchronization outcome.

That result—The learned-route inventory contains only approved destination prefixes and no private guest or management routes—concerns route redistribution filters. Unfiltered redistribution can expose unintended paths, create loops and carry unnecessary routes between otherwise isolated segments. It can be healthy even while the current VSX peer synchronization problem remains.

This would validate VRRP gateway resilience, not VSX peer synchronization. A virtual first-hop gateway provides a stable client next-hop while authorized peers coordinate active forwarding after failure. It is therefore insufficient acceptance evidence for the reported condition.

A functional hierarchy clarifies where endpoints attach, where traffic aggregates and where policy or Layer 3 boundaries belong. Assign clear access, aggregation and routing roles and validate their traffic and scale requirements. would address access/distribution hierarchy, but the reported facts instead point to dual-homed downstream aggregation. That change would leave the actual requirement unresolved.

The alternative targets uplink bandwidth capacity, where aggregate access capacity, application demand and supported congestion tolerance determine uplink sizing; port counts alone do not. It does not establish the intended dual-homed downstream aggregation behavior described in the scenario.

That action—Verify platform model, software release and licensed-feature compatibility in the design—is relevant to firmware feature-support planning. Product capabilities and configuration syntax depend on supported hardware and software releases; a feature described in another model's guide may be unavailable. It does not correct the observed dual-homed downstream aggregation condition.

The alternative targets access VLAN misassignment, where the VLAN used for an untagged or dynamically authorized session determines its broadcast and DHCP context; physical link state is not enough. It does not establish the intended spanning-tree blocked forwarding behavior described in the scenario.

An unsupported or poorly coupled optical path prevents reliable Ethernet signalling regardless of correct routing or authentication configuration. Check optical module support, fiber path and received/transmit power diagnostics. would address optics compatibility and signal levels, but the reported facts instead point to spanning-tree blocked forwarding. That change would leave the actual requirement unresolved.

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 spanning-tree blocked forwarding condition.

Repeated link transitions and frame errors point to Layer 1 quality or negotiation rather than an unseen WLAN authentication issue. Inspect and test the physical medium, transceiver and negotiated interface state before changing higher-layer policy. would address physical layer link fault, but the reported facts instead point to missing trunk VLAN. That change would leave the actual requirement unresolved.

That action—Check optical module support, fiber path and received/transmit power diagnostics—is relevant to optics compatibility and signal levels. An unsupported or poorly coupled optical path prevents reliable Ethernet signalling regardless of correct routing or authentication configuration. It does not correct the observed missing trunk VLAN condition.

The alternative targets RF interference and retries, where strong signal cannot cure collisions or non-Wi-Fi interference; airtime contention and retransmission consume the shared radio medium. It does not establish the intended missing trunk VLAN behavior described in the scenario.

That action—Verify compatible link speed, duplex and negotiation settings on both interface ends—is relevant to duplex and speed negotiation. Mismatched physical link parameters can create collisions or errors despite a link-up status, so higher-layer policy changes cannot repair them. It does not correct the observed LACP partner mismatch condition.

Repeated link transitions and frame errors point to Layer 1 quality or negotiation rather than an unseen WLAN authentication issue. Inspect and test the physical medium, transceiver and negotiated interface state before changing higher-layer policy. would address physical layer link fault, but the reported facts instead point to LACP partner mismatch. That change would leave the actual requirement unresolved.

The alternative targets incorrect RADIUS role result, where a successful authentication indicates identity acceptance, while authorization attributes and local mapping determine permitted services. It does not establish the intended LACP partner mismatch behavior described in the scenario.

Recovery decisions based on elapsed time and service impact are more reliable than an operator's improvised judgment under incident pressure. The indicated result—change records show a clear checkpoint decision and a restore test when acceptance thresholds are not met—checks a different mechanism and would not confirm the required certificate expiry monitoring outcome.

That result—Time-series telemetry shows documented normal ranges and highlights material changes from the baseline—concerns baseline interface health metrics. Counters are most useful when compared with known normal operating behavior and collection intervals rather than isolated snapshots. It can be healthy even while the current certificate expiry monitoring problem remains.

This would validate access-control change verification, not certificate expiry monitoring. Successful application traffic is only half of policy correctness; overbroad authorization can create exposure while the reported symptom appears resolved. It is therefore insufficient acceptance evidence for the reported condition.