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 low-level port map behavior described in the scenario.

An SSID name is not a security boundary; guest users need controlled authorization and routes that limit access to internal resources. Specify guest identity, addressing and policy isolation before enabling the guest WLAN. would address guest network isolation requirements, but the reported facts instead point to low-level port map. That change would leave the actual requirement unresolved.

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 low-level port map condition.

This would validate client experience versus device uptime, not periodic baseline refresh. Infrastructure availability is necessary but not sufficient for usable service; end-to-end user journeys expose service dependencies beyond device health. It is therefore insufficient acceptance evidence for the reported condition.

A performance gain is not acceptable if it weakens required access boundaries; improvements must meet both service and security acceptance criteria. The indicated result—post-change tests show better permitted-traffic performance and unchanged denial of prohibited flows—checks a different mechanism and would not confirm the required periodic baseline refresh outcome.

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 periodic baseline refresh problem remains.

That result—A moving client transitions APs with acceptable interruption duration while retaining approved access—concerns roaming reassociation delay. Roaming quality depends on usable overlap and timely client/security transitions; stationary speed tests cannot diagnose roaming interruption. It can be healthy even while the current RADIUS server reachability 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 RADIUS server reachability outcome.

This would validate 802.1X supplicant disabled, not RADIUS server reachability. An authentication server cannot authorize an endpoint that never initiates the intended EAP handshake on the controlled link. It is therefore insufficient acceptance evidence for the reported condition.

The alternative targets low-level port map, where physical installation and initial configuration depend on explicit interface-level intent; ambiguities produce swapped services or accidental trunk exposure. It does not establish the intended critical application traffic profile 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 critical application traffic profile. That change would leave the actual requirement unresolved.

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 critical application traffic profile condition.

Separate failure detection helps peers distinguish link disruption from peer loss, reducing the risk of harmful split-brain behavior. Design and verify independent VSX peer keepalive connectivity relative to the inter-switch link. would address VSX keepalive isolation, but the reported facts instead point to VRF route-context configuration. That change would leave the actual requirement unresolved.

That action—Configure DHCP relay on the correct client-facing routed interface where centralized DHCP is used—is relevant to DHCP relay on routed segments. Layer 3 boundaries do not normally forward client DHCP broadcasts without relay behavior; the helper target must also be reachable. It does not correct the observed VRF route-context configuration condition.

The alternative targets spanning-tree loop prevention, where uncontrolled Ethernet loops replicate broadcasts and destabilize MAC learning; redundant links require a mechanism to block or logically aggregate unsafe cycles. It does not establish the intended VRF route-context configuration behavior described in the scenario.

Non-802.11 emitters can occupy channel energy without appearing as normal Wi-Fi neighbors; channel changes or source mitigation need measured evidence. Use RF spectrum evidence to locate and mitigate non-Wi-Fi interference. would address interference spectrum diagnosis, but the reported facts instead point to energy and utilization efficiency. That change would leave the actual requirement unresolved.

The alternative targets failure recovery time objective, where resilience depends on recovery behavior, routing/bridging convergence and application tolerance, not the number of installed redundant devices. It does not establish the intended energy and utilization efficiency behavior described in the scenario.

That action—Capture a comparable pre-change performance baseline and define a repeatable post-change test—is relevant to baseline before optimization. Optimization claims require equivalent loads, test methods and service metrics before and after; otherwise changes in demand confound comparison. It does not correct the observed energy and utilization efficiency condition.

The alternative targets inventory and dependency discovery, where missing uplink, power, VLAN, routing and identity dependencies cause apparently successful device replacements to disconnect applications or clients unexpectedly. It does not establish the intended acceptance of WLAN security and mobility behavior described in the scenario.

That action—Create a detailed port, VLAN, power and uplink mapping for implementation—is relevant to low-level port map. Physical installation and initial configuration depend on explicit interface-level intent; ambiguities produce swapped services or accidental trunk exposure. It does not correct the observed acceptance of WLAN security and mobility condition.

EAP-TLS authenticates with certificates, so healthy network transport alone cannot correct absent trust, expired credentials or unmanaged key lifecycle. Include client/server certificate issuance, trust, expiry and revocation in the EAP-TLS design. would address EAP-TLS certificate lifecycle, but the reported facts instead point to acceptance of WLAN security and mobility. That change would leave the actual requirement unresolved.

Identity changes impact access before network routing tests can begin; testing distinct client classes limits unintended lockouts. Stage AAA changes using representative client test groups and a recoverable policy path. would address AAA change coordination, but the reported facts instead point to NAE event rules on AOS-CX. That change would leave the actual requirement unresolved.

That action—Record baseline interface utilization, errors, discards and latency before judging later degradation—is relevant to baseline interface health metrics. Counters are most useful when compared with known normal operating behavior and collection intervals rather than isolated snapshots. It does not correct the observed NAE event rules on AOS-CX condition.

The alternative targets UXI application tests, where network device health does not establish application experience; end-to-end synthetic tests expose DNS, transport and service delays along the client path. It does not establish the intended NAE event rules on AOS-CX behavior described in the scenario.

That result—The configuration audit identifies each intentional override and shows no unapproved divergence in running state—concerns config drift after manual overrides. Undocumented differences make subsequent upgrades and incident response unpredictable because the managed baseline is no longer authoritative. It can be healthy even while the current change freeze and backout criteria problem remains.

Reversible change management requires knowing the previous effective state, not merely retaining a screenshot of intended edits. The indicated result—the change ticket links a verified baseline configuration and a tested restoration procedure—checks a different mechanism and would not confirm the required change freeze and backout criteria outcome.

This would validate NAE event rules on AOS-CX, not change freeze and backout criteria. AOS-CX NAE provides locally evaluated telemetry/event logic; defining useful triggers matters more than merely enabling generic monitoring. It is therefore insufficient acceptance evidence for the reported condition.

That action—Include client-side application reachability and response measures in performance assessment—is relevant to client experience versus device uptime. Infrastructure availability is necessary but not sufficient for usable service; end-to-end user journeys expose service dependencies beyond device health. It does not correct the observed trust and QoS marking boundary condition.

The alternative targets traffic policing versus shaping, where traffic shaping delays packets to smooth bursts, whereas policing enforces a rate by dropping or remarking nonconforming traffic; operational tradeoffs differ. It does not establish the intended trust and QoS marking boundary behavior described in the scenario.

Overly aggressive limits can discard necessary discovery traffic, while absent protection permits broadcasts to overwhelm forwarding capacity. Configure storm-control thresholds based on observed legitimate broadcast levels and incident risk. would address storm control tuning, but the reported facts instead point to trust and QoS marking boundary. That change would leave the actual requirement unresolved.

Client isolation can intentionally prevent peer-to-peer wireless communication despite successful association, addressing and external reachability. Check SSID client-isolation policy before changing routes or AP power. would address client isolation and peer access, but the reported facts instead point to MAC authentication fallback fault. 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 MAC authentication fallback fault condition.

The alternative targets wrong Central scope override, where scoped configuration precedence can explain isolated divergence; changing the shared profile again can unintentionally impact healthy devices. It does not establish the intended MAC authentication fallback fault behavior described in the scenario.