That action—Match OSPF authentication method and key material on the intended neighbors—is relevant to OSPF authentication mismatch. Routing protocol control packets may be rejected when authentication differs, even if underlying Layer 3 ping succeeds. It does not correct the observed DNS mistaken for routing failure condition.

A silent RADIUS transport failure prevents normal authentication regardless of whether the user certificate or role rules are correct. Validate the AAA server path, UDP service and allowed transport before changing identity policies. would address RADIUS server reachability, but the reported facts instead point to DNS mistaken for routing failure. That change would leave the actual requirement unresolved.

The alternative targets asymmetric path enforcement, where stateful firewalls can drop replies they did not see established; checking only the outbound route misses asymmetric forwarding. It does not establish the intended DNS mistaken for routing failure behavior described in the scenario.

This would validate OSPF authentication mismatch, not SVI down due to VLAN state. Routing protocol control packets may be rejected when authentication differs, even if underlying Layer 3 ping succeeds. It is therefore insufficient acceptance evidence for the reported condition.

That result—The effective device value is traced to its controlling scope and the corrected override restores intended behavior—concerns wrong Central scope override. Scoped configuration precedence can explain isolated divergence; changing the shared profile again can unintentionally impact healthy devices. It can be healthy even while the current SVI down due to VLAN state problem remains.

If IP connectivity works but hostname access fails, DNS queries, responses or resolver policy may be broken despite healthy network routes. The indicated result—the client resolves the intended address using the approved DNS server and connects using the application hostname—checks a different mechanism and would not confirm the required SVI down due to VLAN state outcome.

This would validate management-plane security, not low-level port map. 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.

Aggregate access capacity, application demand and supported congestion tolerance determine uplink sizing; port counts alone do not. The indicated result—the projected and tested peak traffic remains within the chosen uplink design's acceptable utilization and loss bounds—checks a different mechanism and would not confirm the required low-level port map outcome.

That result—The authorization matrix maps identity conditions to effective user roles and confirms forbidden access is denied—concerns role-based access decisions. Successful authentication proves identity; separate authorization decisions determine permitted destinations, services and segmentation. It can be healthy even while the current low-level port map problem remains.

This would validate access/distribution hierarchy, not roaming voice coverage overlap. A functional hierarchy clarifies where endpoints attach, where traffic aggregates and where policy or Layer 3 boundaries belong. It is therefore insufficient acceptance evidence for the reported 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 roaming voice coverage overlap problem remains.

Wider channels can raise peak link rates in isolation yet reduce the number of independent channels available in dense environments. The indicated result—the channel plan improves spectrum reuse and measured busy-period throughput rather than relying on theoretical PHY rate alone—checks a different mechanism and would not confirm the required roaming voice coverage overlap outcome.

That result—The pilot shows less management/data airtime overhead while required legacy clients remain supported or have a documented exception—concerns legacy low-rate airtime overhead. Low PHY data rates use more airtime per transmitted bit; rate changes must be constrained by coverage and device support. It can be healthy even while the current channel reuse planning problem remains.

This would validate energy and utilization efficiency, not channel reuse planning. Right-sized operation reduces unnecessary resource use, but energy or capacity savings must not remove availability when users actually need the network. It is therefore insufficient acceptance evidence for the reported condition.

Non-802.11 emitters can occupy channel energy without appearing as normal Wi-Fi neighbors; channel changes or source mitigation need measured evidence. The indicated result—spectrum observations isolate the interference source and the post-remediation error rate falls measurably—checks a different mechanism and would not confirm the required channel reuse planning outcome.

Wide channels can improve peak rates per connection yet shrink available channel separation, raising cochannel contention in dense networks. Choose channel width that balances individual throughput with channel reuse and interference. would address WLAN channel-width optimization, but the reported facts instead point to client experience versus device uptime. That change would leave the actual requirement unresolved.

That action—Retain mandatory authorization and segmentation controls while optimizing forwarding or QoS—is relevant to security-preserving optimization. A performance gain is not acceptable if it weakens required access boundaries; improvements must meet both service and security acceptance criteria. It does not correct the observed client experience versus device uptime condition.

The alternative targets periodic baseline refresh, where a fixed historical baseline can become misleading as workload mix and client capability change; thresholds should reflect current accepted operating conditions. It does not establish the intended client experience versus device uptime behavior described in the scenario.

This would validate client isolation and peer access, not central API unauthorized response. Client isolation can intentionally prevent peer-to-peer wireless communication despite successful association, addressing and external reachability. It is therefore insufficient acceptance evidence for the reported condition.

That result—The bundle shows all intended collecting/distributing members with consistent partner and interface parameters—concerns LACP partner mismatch. LACP only selects compatible links for aggregation; forcing an incompatible member can create unexpected hashing or forwarding behavior. It can be healthy even while the current central API unauthorized response 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 central API unauthorized response outcome.

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 LACP bundled links problem remains.

A route must identify the desired prefix and a valid forwarding path; a configured but unresolved next hop does not deliver packets. The indicated result—the switch routing table selects the intended prefix and traffic reaches the remote subnet over the verified next hop—checks a different mechanism and would not confirm the required LACP bundled links outcome.

This would validate SVI inter-VLAN gateway, not LACP bundled links. VLAN configuration creates Layer 2 separation; inter-subnet communication requires appropriate Layer 3 interfaces, addressing and policy. It is therefore insufficient acceptance evidence for the reported condition.

That result—The report contrasts like-for-like baseline and post-change throughput, latency, retries and error statistics—concerns baseline before optimization. Optimization claims require equivalent loads, test methods and service metrics before and after; otherwise changes in demand confound comparison. It can be healthy even while the current optimization with rollback problem remains.

Subscriber tracking lets a switch direct multicast toward active receivers instead of flooding every port, protecting shared access bandwidth. The indicated result—capture and counters show multicast delivery to joined receiver ports without excess traffic to nonmembers—checks a different mechanism and would not confirm the required optimization with rollback outcome.

This would validate energy and utilization efficiency, not optimization with rollback. Right-sized operation reduces unnecessary resource use, but energy or capacity savings must not remove availability when users actually need the network. It is therefore insufficient acceptance evidence for the reported condition.

This would validate IPv6 router-advertisement spoofing, not unauthorized DHCP server. 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.

An ACL can block selected Layer 4 flows while other connectivity remains healthy; removing all controls is an unsafe shortcut. The indicated result—policy logs or counters identify the matching rule and the repaired rule permits only the approved service—checks a different mechanism and would not confirm the required unauthorized DHCP server outcome.

That result—The session is assigned the approved VLAN and receives the expected subnet's gateway and address settings—concerns access VLAN misassignment. The VLAN used for an untagged or dynamically authorized session determines its broadcast and DHCP context; physical link state is not enough. It can be healthy even while the current unauthorized DHCP server problem remains.

That action—Validate management IP, DNS, time and permitted outbound connectivity before retrying cloud onboarding—is relevant to management connectivity and DNS. Central enrollment requires correctly routed and resolved management traffic; a working user VLAN does not guarantee reachability of the management plane. It does not correct the observed native VLAN alignment condition.

Edge ports should not accept topology-control messages from unauthorized bridges; BPDU Guard can protect the switching domain by restricting offending links. Enable suitable BPDU protection on ports intended only for endpoints. would address BPDU Guard at edge ports, but the reported facts instead point to native VLAN alignment. That change would leave the actual requirement unresolved.

The alternative targets LACP bundled links, where aggregated links require compatible control and interface parameters; mismatched LACP or VLAN settings can prevent members from joining. It does not establish the intended native VLAN alignment behavior described in the scenario.