That action—Verify the endpoint's default gateway and local first-hop reachability—is relevant to missing default gateway. Traffic bound for other subnets needs a reachable Layer 3 next hop; a functioning local broadcast domain does not provide routing. It does not correct the observed OSPF authentication mismatch condition.

A data VLAN or management group cannot correct a switch power budget that denies the PD enough electrical power. Inspect the switch's per-port and aggregate PoE allocation against endpoint power requirements. would address power-over-Ethernet failure, but the reported facts instead point to OSPF authentication mismatch. That change would leave the actual requirement unresolved.

The alternative targets route missing in correct VRF, where separate VRFs maintain distinct forwarding information bases; routes visible in one context do not automatically apply in another. It does not establish the intended OSPF authentication mismatch behavior described in the scenario.

6 GHz operation requires capable client hardware and supported regulatory and security settings; enabling the band does not upgrade legacy adapters. The indicated result—pilot devices supporting the target band join securely and unsupported clients have a documented alternative network—checks a different mechanism and would not confirm the required OSPF area design outcome.

This would validate uplink bandwidth capacity, not OSPF area design. Aggregate access capacity, application demand and supported congestion tolerance determine uplink sizing; port counts alone do not. It is therefore insufficient acceptance evidence for the reported condition.

That result—A link or peer failure test keeps supported endpoint traffic forwarded over the surviving upstream path—concerns dual-homed downstream aggregation. Hardware redundancy is ineffective if every downstream path still depends on one forwarding node or unsound Layer 2 topology. It can be healthy even while the current OSPF area design problem remains.

That result—Both peers enter Full adjacency and exchange the expected route information—concerns OSPF neighbor area mismatch. OSPF requires compatible area identity, network type and essential adjacency parameters; IP reachability alone does not establish a neighbor. It can be healthy even while the current AP radio disabled or unsupported channel problem remains.

An authentication server cannot authorize an endpoint that never initiates the intended EAP handshake on the controlled link. The indicated result—packet capture shows the expected EAPOL handshake and the endpoint reaches the assigned authorized session state—checks a different mechanism and would not confirm the required AP radio disabled or unsupported channel outcome.

This would validate captive portal redirect fault, not AP radio disabled or unsupported channel. 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.

The alternative targets voice queuing under load, where qoS can prioritize selected packets when contention occurs but cannot create bandwidth; correct queue treatment reduces latency for critical applications. It does not establish the intended high-density WLAN airtime optimization behavior described in the scenario.

Fast reliable handoff requires compatible client capabilities, adequate AP overlap and secure authentication continuity rather than just increasing bandwidth. Tune and validate supported roaming and reauthentication behavior for mobile voice clients. would address roaming voice latency, but the reported facts instead point to high-density WLAN airtime optimization. That change would leave the actual requirement unresolved.

That action—Choose channel width that balances individual throughput with channel reuse and interference—is relevant to WLAN channel-width optimization. Wide channels can improve peak rates per connection yet shrink available channel separation, raising cochannel contention in dense networks. It does not correct the observed high-density WLAN airtime optimization condition.

The alternative targets guest network isolation requirements, where an SSID name is not a security boundary; guest users need controlled authorization and routes that limit access to internal resources. It does not establish the intended 5 GHz regulatory channel constraints behavior described in the scenario.

A higher RSSI does not remove contention; channel planning, cell sizing and client density are needed to increase effective capacity. Plan enough usable wireless airtime and spatial reuse rather than simply raising transmit power. would address coverage versus capacity tradeoff, but the reported facts instead point to 5 GHz regulatory channel constraints. That change would leave the actual requirement unresolved.

That action—Assign clear access, aggregation and routing roles and validate their traffic and scale requirements—is relevant to access/distribution hierarchy. A functional hierarchy clarifies where endpoints attach, where traffic aggregates and where policy or Layer 3 boundaries belong. It does not correct the observed 5 GHz regulatory channel constraints condition.

That result—Approved radios operate on permitted channels and representative clients associate without DFS or compatibility surprises—concerns 5 GHz regulatory channel constraints. Allowed frequencies, radar-detection obligations and client capabilities can vary by country and AP model, so global channel templates may fail. It can be healthy even while the current guest network isolation requirements problem remains.

This would validate roaming voice coverage overlap, not guest network isolation requirements. A reliable voice WLAN needs usable signal and timely authentication/roaming behavior between neighboring cells, not maximum isolated AP range. It is therefore insufficient acceptance evidence for the reported 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. 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 guest network isolation requirements outcome.

Co-channel neighbors share airtime when within interference range; thoughtful reuse can reduce contention without simply widening channels. Rebalance AP channel assignments using measured utilization and available independent channels. would address channel reuse planning, but the reported facts instead point to legacy low-rate airtime overhead. That change would leave the actual requirement unresolved.

The alternative targets transmit-power balance, where downlink strength from a powerful AP does not increase client transmit capability; asymmetric links and oversized cells can harm roaming. It does not establish the intended legacy low-rate airtime overhead behavior described in the scenario.

That action—Measure convergence and application recovery time under designated failure tests—is relevant to failure recovery time objective. Resilience depends on recovery behavior, routing/bridging convergence and application tolerance, not the number of installed redundant devices. It does not correct the observed legacy low-rate airtime overhead condition.

That result—Multicast reaches registered subscriber ports while nonmember access ports show no unnecessary stream traffic—concerns multicast receiver handling. IGMP membership information lets switches constrain Layer 2 multicast distribution instead of flooding traffic indiscriminately. It can be healthy even while the current VSX keepalive isolation problem remains.

This would validate dynamic role enforcement, not VSX keepalive isolation. A RADIUS Access-Accept alone does not prove the switch or gateway applied the intended role policy to user sessions. It is therefore insufficient acceptance evidence for the reported condition.

A virtual first-hop gateway provides a stable client next-hop while authorized peers coordinate active forwarding after failure. The indicated result—a peer failure preserves client reachability to the virtual gateway and restores traffic within the approved recovery target—checks a different mechanism and would not confirm the required VSX keepalive isolation outcome.

Uncontrolled Ethernet loops replicate broadcasts and destabilize MAC learning; redundant links require a mechanism to block or logically aggregate unsafe cycles. Keep an appropriate spanning-tree or supported loop-free design across redundant Layer 2 paths. would address spanning-tree loop prevention, but the reported facts instead point to RADIUS shared-secret consistency. That change would leave the actual requirement unresolved.

The alternative targets guest captive-portal flow, where association and address assignment alone cannot enforce guest registration or policy acceptance; the portal and post-login role must be connected. It does not establish the intended RADIUS shared-secret consistency behavior described in the scenario.

That action—Verify the AP's negotiated Ethernet link and available PoE power meet its installed feature requirements—is relevant to AP uplink power and negotiation. Wireless features depend on the wired uplink and power available to the AP; sufficient coverage does not prove the device is operating at full capacity. It does not correct the observed RADIUS shared-secret consistency condition.

Wider channels can raise peak link rates in isolation yet reduce the number of independent channels available in dense environments. Balance WLAN channel width against cell density and spectrum reuse. would address high-density channel-width choice, but the reported facts instead point to roaming voice coverage overlap. That change would leave the actual requirement unresolved.

The alternative targets directional antenna selection, where 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 establish the intended roaming voice coverage overlap behavior described in the scenario.

That action—Identify shared failure domains and separate critical links, power and devices where feasible—is relevant to failure-domain isolation. Two logical paths do not provide independent availability when they share a single cable route, power supply or upstream component. It does not correct the observed roaming voice coverage overlap condition.

The alternative targets MAC learning and unintended loops, where rapid MAC moves and broadcast amplification indicate switching topology instability, not a problem fixed by adding a default route. It does not establish the intended missing default gateway behavior described in the scenario.

Routing protocol control packets may be rejected when authentication differs, even if underlying Layer 3 ping succeeds. Match OSPF authentication method and key material on the intended neighbors. would address OSPF authentication mismatch, but the reported facts instead point to missing default gateway. That change would leave the actual requirement unresolved.

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 missing default gateway condition.