That action—Check SSID client-isolation policy before changing routes or AP power—is relevant to client isolation and peer access. Client isolation can intentionally prevent peer-to-peer wireless communication despite successful association, addressing and external reachability. It does not correct the observed IPv6 router-advertisement spoofing condition.

A configured SVI cannot act as the client gateway without operational Layer 2 underlay and correct interface state. Check VLAN operational state and active interface membership when an SVI is down. would address SVI down due to VLAN state, but the reported facts instead point to IPv6 router-advertisement spoofing. That change would leave the actual requirement unresolved.

The alternative targets firmware-induced configuration drift, where successful reboot and version display do not establish that all intended policies and interface behaviors survived the change. It does not establish the intended IPv6 router-advertisement spoofing behavior described in the scenario.

This would validate firmware-induced configuration drift, not ACL deny versus service outage. Successful reboot and version display do not establish that all intended policies and interface behaviors survived the change. It is therefore insufficient acceptance evidence for the reported condition.

That result—The correct VRF has an installed destination route and permitted traffic uses the intended next hop—concerns route missing in correct VRF. Separate VRFs maintain distinct forwarding information bases; routes visible in one context do not automatically apply in another. It can be healthy even while the current ACL deny versus service outage problem remains.

A valid login or token does not imply access to every management resource; 403 generally indicates denied permissions rather than a switch port failure. The indicated result—the authorized API call succeeds with appropriately scoped access while prohibited operations continue to return denial—checks a different mechanism and would not confirm the required ACL deny versus service outage outcome.

VLANs divide Layer 2 domains, whereas VRFs maintain separate Layer 3 routing contexts; any intentional crossing needs controlled connectivity. Use VRFs where independent routing domains are required, with explicit permitted route exchange. would address routing and VRF separation, but the reported facts instead point to access/distribution hierarchy. That change would leave the actual requirement unresolved.

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 access/distribution hierarchy behavior described in the scenario.

That action—Select VSF or VSX based on supported switch family and the required control-plane model—is relevant to VSF versus VSX platform planning. VSF forms a virtual switch with supported stacking members; VSX coordinates two peers while retaining separate control planes, so support and failure domains differ. It does not correct the observed access/distribution hierarchy condition.

That action—Inventory existing physical, logical and service dependencies before finalizing the change sequence—is relevant to inventory and dependency discovery. Missing uplink, power, VLAN, routing and identity dependencies cause apparently successful device replacements to disconnect applications or clients unexpectedly. It does not correct the observed address pool capacity condition.

A reliable voice WLAN needs usable signal and timely authentication/roaming behavior between neighboring cells, not maximum isolated AP range. Design cell overlap and roaming characteristics to support application handoff requirements. would address roaming voice coverage overlap, but the reported facts instead point to address pool capacity. That change would leave the actual requirement unresolved.

The alternative targets RF survey and building materials, where propagation and attenuation vary with walls, shelving and device environments; a diagram alone cannot establish coverage or service quality. It does not establish the intended address pool capacity behavior described in the scenario.

Physical installation and initial configuration depend on explicit interface-level intent; ambiguities produce swapped services or accidental trunk exposure. The indicated result—the installation schedule ties each device and switch port to its approved VLANs, PoE and upstream connection—checks a different mechanism and would not confirm the required routing and VRF separation outcome.

That result—The projected and tested peak traffic remains within the chosen uplink design's acceptable utilization and loss bounds—concerns uplink bandwidth capacity. Aggregate access capacity, application demand and supported congestion tolerance determine uplink sizing; port counts alone do not. It can be healthy even while the current routing and VRF separation problem remains.

This would validate VSF versus VSX platform planning, not routing and VRF separation. VSF forms a virtual switch with supported stacking members; VSX coordinates two peers while retaining separate control planes, so support and failure domains differ. It is therefore insufficient acceptance evidence for the reported condition.

That result—Spectrum observations isolate the interference source and the post-remediation error rate falls measurably—concerns interference spectrum diagnosis. Non-802.11 emitters can occupy channel energy without appearing as normal Wi-Fi neighbors; channel changes or source mitigation need measured evidence. It can be healthy even while the current high-density WLAN airtime optimization problem remains.

This would validate transmit-power balance, not high-density WLAN airtime optimization. Downlink strength from a powerful AP does not increase client transmit capability; asymmetric links and oversized cells can harm roaming. It is therefore insufficient acceptance evidence for the reported condition.

Right-sized operation reduces unnecessary resource use, but energy or capacity savings must not remove availability when users actually need the network. The indicated result—consumption and service-quality metrics improve outside peak hours without violating coverage or capacity objectives—checks a different mechanism and would not confirm the required high-density WLAN airtime optimization outcome.

This would validate template variable rendering, not SSID-to-forwarding path consistency. Shared templates are reusable only when site-specific identity, address and port data are correctly substituted for each target device. It is therefore insufficient acceptance evidence for the reported condition.

EAP-TLS verifies certificate-based identities through the configured authentication system; a shared PSK does not give per-device certificate identity. The indicated result—a representative approved device completes certificate-based enterprise authentication and receives its authorized network role—checks a different mechanism and would not confirm the required SSID-to-forwarding path consistency outcome.

That result—Known endpoints authenticate successfully while unrecognized endpoints do not receive privileged access on the controlled port—concerns wired 802.1X port control. An AAA server cannot enforce identity on a port whose access-control mechanism is disabled; unauthorized endpoints must receive a restricted result. It can be healthy even while the current SSID-to-forwarding path consistency problem remains.

An idempotent workflow can be safely retried without proliferating duplicate objects or introducing inconsistent partial configuration. Design repeatable API updates to check existing state and converge on intended configuration. would address configuration API idempotence, but the reported facts instead point to network asset lifecycle. That change would leave the actual requirement unresolved.

That action—Handle API pagination, response codes and provider rate controls in monitoring automation—is relevant to API paging and rate limits. Management APIs may return segmented data or throttle callers, so automation must recognize incomplete and transient outcomes instead of silently succeeding. It does not correct the observed network asset lifecycle condition.

The alternative targets firmware rollout staging, where software changes can alter forwarding, management or authentication behavior, so a limited pilot provides evidence before broad deployment. It does not establish the intended network asset lifecycle behavior described in the scenario.

That action—Size DHCP scopes and client subnets against simultaneous address demand and lease behavior—is relevant to address pool capacity. More APs cannot solve exhaustion of the IP-address pool; usable addresses, lease duration and peak devices must be evaluated together. It does not correct the observed coverage versus capacity tradeoff condition.

The 2.4 GHz band has limited nonoverlapping channel choices in typical regulatory domains, so channel overlap and wide channels intensify contention. Use appropriately separated 2.4 GHz channels and narrow channel widths for dense coverage. would address 2.4 GHz interference planning, but the reported facts instead point to coverage versus capacity tradeoff. That change would leave the actual requirement unresolved.

The alternative targets 6 GHz WLAN compatibility, where 6 GHz operation requires capable client hardware and supported regulatory and security settings; enabling the band does not upgrade legacy adapters. It does not establish the intended coverage versus capacity tradeoff behavior described in the scenario.

That action—Check VLAN operational state and active interface membership when an SVI is down—is relevant to SVI down due to VLAN state. A configured SVI cannot act as the client gateway without operational Layer 2 underlay and correct interface state. It does not correct the observed asymmetric path enforcement 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 asymmetric path enforcement behavior described in the scenario.

If IP connectivity works but hostname access fails, DNS queries, responses or resolver policy may be broken despite healthy network routes. Compare name resolution with direct IP reachability to isolate the DNS dependency. would address DNS mistaken for routing failure, but the reported facts instead point to asymmetric path enforcement. That change would leave the actual requirement unresolved.

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.