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Check active REST API version, authentication mode, target VRF, transaction response, desired diff and audit trail. This step pertains to REST API and configuration-tool integration boundaries but is not one of the two complementary decisions in this case. The required response and evidence are: Assign untagged client access ports and explicitly required tagged VLANs to uplinks using supported AOS-CX VLAN interface modes. Together with: Inspect VLAN inventory, per-interface native versus tagged behavior, allowed VLANs and peer trunk configuration. Scenario: Two trunk peers disagree on native VLAN and management packets enter the wrong broadcast domain.

Subscribers receive expected streams without flooding non-subscribing access ports or triggering avoidable congestion. This step pertains to Multicast flooding and receiver path performance but is not one of the two complementary decisions in this case. The required response and evidence are: Assign untagged client access ports and explicitly required tagged VLANs to uplinks using supported AOS-CX VLAN interface modes. Together with: Inspect VLAN inventory, per-interface native versus tagged behavior, allowed VLANs and peer trunk configuration. Scenario: Two trunk peers disagree on native VLAN and management packets enter the wrong broadcast domain.

Validate route selection, administrative distance or policy and equal-cost path behavior across backup uplinks. This step pertains to OSPF and BGP route preference and ECMP planning but is not one of the two complementary decisions in this case. The required response and evidence are: Assign untagged client access ports and explicitly required tagged VLANs to uplinks using supported AOS-CX VLAN interface modes. Together with: Inspect VLAN inventory, per-interface native versus tagged behavior, allowed VLANs and peer trunk configuration. Scenario: Two trunk peers disagree on native VLAN and management packets enter the wrong broadcast domain.

Archive switch configs with encryption, retention and least-privilege access while avoiding uncontrolled exposure of shared credentials or tokens. This action instead applies to Safe configuration archiving and secret handling. Configuration histories may contain secrets and management details, so backup security is part of switch operations. It does not directly resolve the controlling requirement. The targeted response is: Map HPE Aruba CX access and aggregation switch families to port count, PoE, uplink, redundancy and scale requirements rather than treating every chassis as interchangeable. Scenario: A branch closet needs 48 powered telephones and two high-capacity fiber uplinks but the proposed compact switch has an inadequate PoE budget.

Calculate access ports, PoE classes and spare uplink capacity from endpoint inventory and growth rather than ordering by current occupied ports alone. This action instead applies to Port density and growth headroom. Port availability, available watts and uplink throughput are separate constraints in campus switch sizing. It does not directly resolve the controlling requirement. The targeted response is: Map HPE Aruba CX access and aggregation switch families to port count, PoE, uplink, redundancy and scale requirements rather than treating every chassis as interchangeable. Scenario: A branch closet needs 48 powered telephones and two high-capacity fiber uplinks but the proposed compact switch has an inadequate PoE budget.

Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. This action instead applies to Security and authentication migration coordination. Network authentication relies on reachable identity services and policy context that need explicit testing. It does not directly resolve the controlling requirement. The targeted response is: Map HPE Aruba CX access and aggregation switch families to port count, PoE, uplink, redundancy and scale requirements rather than treating every chassis as interchangeable. Scenario: A branch closet needs 48 powered telephones and two high-capacity fiber uplinks but the proposed compact switch has an inadequate PoE budget.

Check port mode, VLAN membership, tagged/untagged lists, allowed trunk VLANs and MAC learning per VLAN. These checks can help with VLAN ID mismatch and trunk omission, but they are not the most discriminating first evidence here. Examine: Inspect license tiers, serial entitlement, firmware support, account ownership and permitted network access. Scenario: A managed-service provider tries to claim devices already associated with another tenant.

Review site power circuits, PSU ratings, environmental constraints, rack elevations and OOB console reachability. These checks can help with Physical installation and rack power implementation, but they are not the most discriminating first evidence here. Examine: Inspect license tiers, serial entitlement, firmware support, account ownership and permitted network access. Scenario: A managed-service provider tries to claim devices already associated with another tenant.

Review maintenance approval, baselines, device access, console recovery, config backups, support contacts and rollback triggers. These checks can help with Implementation plan preflight and rollback criteria, but they are not the most discriminating first evidence here. Examine: Inspect license tiers, serial entitlement, firmware support, account ownership and permitted network access. Scenario: A managed-service provider tries to claim devices already associated with another tenant.

The physical link comes up reliably at intended speed with optical levels in supported range and no recurring errors. This step pertains to Optic insertion and physical layer preflight but is not one of the two complementary decisions in this case. The required response and evidence are: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Together with: Inspect identity server reachability, time synchronization, EAP settings, downloadable role support, exceptions and emergency access. Scenario: A cutover enforces new port roles but no technician has a documented break-glass management path.

Reconcile the approved design with actual interfaces, optics, firmware, cable labels and final switch configurations after deployment. This step pertains to Change documentation and as-built reconciliation but is not one of the two complementary decisions in this case. The required response and evidence are: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Together with: Inspect identity server reachability, time synchronization, EAP settings, downloadable role support, exceptions and emergency access. Scenario: A cutover enforces new port roles but no technician has a documented break-glass management path.

Check interface-to-interface maps, VSX ISL or VSF links, keepalive transport, LAG membership and independent power routes. This step pertains to Resilient peer cabling and link map but is not one of the two complementary decisions in this case. The required response and evidence are: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Together with: Inspect identity server reachability, time synchronization, EAP settings, downloadable role support, exceptions and emergency access. Scenario: A cutover enforces new port roles but no technician has a documented break-glass management path.

Compare firmware, config diffs, CPU/memory, temperature, traffic rates and log markers for the relevant period. These checks can help with Operational state and baseline configuration differences, but they are not the most discriminating first evidence here. Examine: Examine RADIUS response categories, endpoint identity, effective user role, switch port and historical attempts. Scenario: A branch has repeated EAP failures localized to one firmware version after a policy change.

Check enabled management services by VRF, ACLs, user roles, TLS/SSH settings, logging, NTP and out-of-band recovery. These checks can help with AOS-CX secure management access setup, but they are not the most discriminating first evidence here. Examine: Examine RADIUS response categories, endpoint identity, effective user role, switch port and historical attempts. Scenario: A branch has repeated EAP failures localized to one firmware version after a policy change.

Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. These checks can help with AOS-CX REST API version discovery and compatibility, but they are not the most discriminating first evidence here. Examine: Examine RADIUS response categories, endpoint identity, effective user role, switch port and historical attempts. Scenario: A branch has repeated EAP failures localized to one firmware version after a policy change.

A redundant path remains correctly controlled while a mistaken loop or root shift is isolated. This result is associated with STP blocking and topology-loop recognition; it does not demonstrate the requested network behavior. The relevant acceptance test is: Successful authentication produces the intended dynamically assigned access controls with reproducible audit evidence. Scenario: A switch is omitted from the policy server's authorized network device list and client RADIUS requests fail.

Rogue network services are blocked at untrusted edges without disrupting legitimate DHCP or ARP exchanges. This result is associated with Port security and DHCP/ARP spoofing defenses; it does not demonstrate the requested network behavior. The relevant acceptance test is: Successful authentication produces the intended dynamically assigned access controls with reproducible audit evidence. Scenario: A switch is omitted from the policy server's authorized network device list and client RADIUS requests fail.

Hosts reach the correct local gateway and remote networks over intended routing context without overlapping prefixes. This result is associated with SVI and routed interface gateway configuration; it does not demonstrate the requested network behavior. The relevant acceptance test is: Successful authentication produces the intended dynamically assigned access controls with reproducible audit evidence. Scenario: A switch is omitted from the policy server's authorized network device list and client RADIUS requests fail.

The deployed switch supports expected expansion without immediate port exhaustion, power shedding or oversubscribed uplinks. This step pertains to Port density and growth headroom but is not one of the two complementary decisions in this case. The required response and evidence are: Record deliberate changes in running configuration, save the intended startup state and use checkpoints or diffs as an auditable rollback option. Together with: Inspect running versus startup configuration, checkpoint inventory, change timestamp and planned rollback commands. Scenario: An engineer restores traffic after an outage but reboots before preserving the corrected configuration.

Use the correct AOS-CX interface context and verify administrative state, speed and VLAN mode rather than reusing unrelated switch-vendor syntax. This step pertains to AOS-CX interface configuration hierarchy but is not one of the two complementary decisions in this case. The required response and evidence are: Record deliberate changes in running configuration, save the intended startup state and use checkpoints or diffs as an auditable rollback option. Together with: Inspect running versus startup configuration, checkpoint inventory, change timestamp and planned rollback commands. Scenario: An engineer restores traffic after an outage but reboots before preserving the corrected configuration.

Check enabled management services by VRF, ACLs, user roles, TLS/SSH settings, logging, NTP and out-of-band recovery. This step pertains to AOS-CX secure management access setup but is not one of the two complementary decisions in this case. The required response and evidence are: Record deliberate changes in running configuration, save the intended startup state and use checkpoints or diffs as an auditable rollback option. Together with: Inspect running versus startup configuration, checkpoint inventory, change timestamp and planned rollback commands. Scenario: An engineer restores traffic after an outage but reboots before preserving the corrected configuration.

Correlate system logs, NTP timestamps and interface or protocol counters to reconstruct network incidents accurately. This action instead applies to AOS-CX log event and timestamp correlation. Logs from unaligned clocks can invert event order and create false conclusions about fault propagation. It does not directly resolve the controlling requirement. The targeted response is: Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state. Scenario: A management subscription lapses on production switches while onsite staff assume monitoring will continue indefinitely.

Monitor authentication success ratios, rejected sessions, policy role assignment and known exception endpoints by switch/site. This action instead applies to Client authentication and port-role operational reports. Auth rate and authorization role must both be checked; success in RADIUS does not guarantee usable network access. It does not directly resolve the controlling requirement. The targeted response is: Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state. Scenario: A management subscription lapses on production switches while onsite staff assume monitoring will continue indefinitely.

Distinguish missing DHCP broadcasts, blocked offers and relay misconfiguration with trust and binding evidence. This action instead applies to DHCP snooping and client boot failure identification. DHCP snooping enforces trust direction; an untrusted legitimate uplink can suppress all clients even with healthy cables. It does not directly resolve the controlling requirement. The targeted response is: Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state. Scenario: A management subscription lapses on production switches while onsite staff assume monitoring will continue indefinitely.

Approved administrators can manage devices through intended protected paths while unauthorized networks are denied. This result is associated with AOS-CX secure management access setup; it does not demonstrate the requested network behavior. The relevant acceptance test is: The exact intended physical or logical port has valid configuration and operational link state without affecting neighboring ports. Scenario: An operator pastes legacy switch CLI for a trunk and AOS-CX rejects or misinterprets it.

A single uplink or chassis link failure leaves the supported peer topology in a predictable operating state. This result is associated with Resilient peer cabling and link map; it does not demonstrate the requested network behavior. The relevant acceptance test is: The exact intended physical or logical port has valid configuration and operational link state without affecting neighboring ports. Scenario: An operator pastes legacy switch CLI for a trunk and AOS-CX rejects or misinterprets it.

A tested change survives the intended restart while an approved rollback restores the previous known-good configuration. This result is associated with AOS-CX configuration save and checkpoint workflow; it does not demonstrate the requested network behavior. The relevant acceptance test is: The exact intended physical or logical port has valid configuration and operational link state without affecting neighboring ports. Scenario: An operator pastes legacy switch CLI for a trunk and AOS-CX rejects or misinterprets it.

Inspect authentication attempt rates, failure/reject categories, RADIUS timing, supplicant behavior and role download logs. These checks can help with Authentication storms and endpoint retry load, but they are not the most discriminating first evidence here. Examine: Inspect serial and MAC claim, subscription, tenant organization, management network DNS/TLS/NTP and switch connectivity to Central. Scenario: A new edge switch has valid uplink connectivity but no Central entitlement and stays unlicensed.

Review Central group type, effective configuration, variable bindings, supported template syntax and local override restrictions. These checks can help with Central UI group versus template configuration scope, but they are not the most discriminating first evidence here. Examine: Inspect serial and MAC claim, subscription, tenant organization, management network DNS/TLS/NTP and switch connectivity to Central. Scenario: A new edge switch has valid uplink connectivity but no Central entitlement and stays unlicensed.

Inspect reverse-path forwarding, PIM neighbors, rendezvous-point design if applicable, multicast route state and IGMP memberships. These checks can help with PIM and multicast routed-path validation, but they are not the most discriminating first evidence here. Examine: Inspect serial and MAC claim, subscription, tenant organization, management network DNS/TLS/NTP and switch connectivity to Central. Scenario: A new edge switch has valid uplink connectivity but no Central entitlement and stays unlicensed.

Compare serials, firmware, management tenant, location, replacement spares, support expiration and asset owner. These checks can help with Inventory and licensing lifecycle control, but they are not the most discriminating first evidence here. Examine: Examine target release notes, known issues, platform compatibility, upgrade path, image bank and postboot feature tests. Scenario: A multi-switch upgrade schedule omits whether adjacent VSX peers can tolerate mixed software revisions.

Inspect VRRP role/priority or VSX active gateway configuration, virtual MAC/IP, peer state and ARP entries. These checks can help with VRRP or active gateway redundant gateway behavior, but they are not the most discriminating first evidence here. Examine: Examine target release notes, known issues, platform compatibility, upgrade path, image bank and postboot feature tests. Scenario: A multi-switch upgrade schedule omits whether adjacent VSX peers can tolerate mixed software revisions.

Check temperature sensors, fan speed alarms, power supply redundancy, PoE consumption and event history. These checks can help with Environmental and power health monitoring, but they are not the most discriminating first evidence here. Examine: Examine target release notes, known issues, platform compatibility, upgrade path, image bank and postboot feature tests. Scenario: A multi-switch upgrade schedule omits whether adjacent VSX peers can tolerate mixed software revisions.