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New templates apply correctly to pilot devices and promote only after peer, VLAN and role acceptance gates pass. This result is associated with Config template test and promotion pipeline; it does not demonstrate the requested network behavior. The relevant acceptance test is: State and configuration are inventoried accurately while unauthorized write requests are denied and secrets stay protected. Scenario: A read-only REST audit fails because HTTPS was enabled only on an unreachable VRF.

New sites integrate without duplicate addresses, unintended route leakage or VLAN ambiguity. This result is associated with IP addressing and VLAN numbering plan; it does not demonstrate the requested network behavior. The relevant acceptance test is: State and configuration are inventoried accurately while unauthorized write requests are denied and secrets stay protected. Scenario: A read-only REST audit fails because HTTPS was enabled only on an unreachable VRF.

Operators identify cause and sequence across devices with aligned timestamps rather than attributing unrelated events. This result is associated with AOS-CX log event and timestamp correlation; it does not demonstrate the requested network behavior. The relevant acceptance test is: State and configuration are inventoried accurately while unauthorized write requests are denied and secrets stay protected. Scenario: A read-only REST audit fails because HTTPS was enabled only on an unreachable VRF.

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: Compare installed routing table, OSPF or BGP candidate paths, forwarding next hops and configured preferences. Scenario: An engineer assumes BGP session count determines how many usable ECMP next hops appear in the FIB.

Inspect physical alarms, optical budget, loopback results, error history, supported optics and redundant-path readiness. These checks can help with Optic and port fault replacement strategy, but they are not the most discriminating first evidence here. Examine: Compare installed routing table, OSPF or BGP candidate paths, forwarding next hops and configured preferences. Scenario: An engineer assumes BGP session count determines how many usable ECMP next hops appear in the FIB.

Compare live LLDP neighbors, optical transceiver inventory, cable identifiers, rack diagrams and authorized topology. These checks can help with Front-panel and cabling as-built verification, but they are not the most discriminating first evidence here. Examine: Compare installed routing table, OSPF or BGP candidate paths, forwarding next hops and configured preferences. Scenario: An engineer assumes BGP session count determines how many usable ECMP next hops appear in the FIB.

Validate route selection, administrative distance or policy and equal-cost path behavior across backup uplinks. This action instead applies to OSPF and BGP route preference and ECMP planning. Multiple advertised paths do not guarantee intended load distribution; the installed route and forwarding decisions must be observed. It does not directly resolve the controlling requirement. The targeted response is: Repair a proven VRF interface assignment or route leak rule while preventing unrelated tenant reachability. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.

Correct the precise RADIUS, EAP or role-download fault while retaining least-privilege policy and test-deny behavior. This action instead applies to Authentication and RADIUS remediation discipline. Replacing an authentication outage with unrestricted open ports is not equivalent to a secure remediation. It does not directly resolve the controlling requirement. The targeted response is: Repair a proven VRF interface assignment or route leak rule while preventing unrelated tenant reachability. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.

Trace a host's local IP, mask, gateway and ARP resolution before attributing reachability failure to routing protocols. This action instead applies to IP addressing subnet and gateway mismatch. Incorrect subnet or default gateway settings can break connectivity even while VLAN forwarding remains healthy. It does not directly resolve the controlling requirement. The targeted response is: Repair a proven VRF interface assignment or route leak rule while preventing unrelated tenant reachability. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.

Assign untagged client access ports and explicitly required tagged VLANs to uplinks using supported AOS-CX VLAN interface modes. This action instead applies to Access VLAN and trunk allowed-list design. Native or untagged VLAN behavior and tagged VLAN allowance must agree across both ends of a trunk. It does not directly resolve the controlling requirement. The targeted response is: Implement a supported VSF topology with consistent member identities, stack links and role expectations, and validate member failover. Scenario: An access stack uses one daisy-chain link and its owner expects ring resilience despite a missing return connection.

Apply edge-port and BPDU protection to endpoint-facing ports, preserving expected behavior on real interswitch links. This action instead applies to BPDU guard and edge port hardening. Edge protection must be targeted to endpoint ports; enabling BPDU guard on an uplink can create an outage when the neighbor legitimately sends BPDUs. It does not directly resolve the controlling requirement. The targeted response is: Implement a supported VSF topology with consistent member identities, stack links and role expectations, and validate member failover. Scenario: An access stack uses one daisy-chain link and its owner expects ring resilience despite a missing return connection.

Reconcile the approved design with actual interfaces, optics, firmware, cable labels and final switch configurations after deployment. This action instead applies to Change documentation and as-built reconciliation. The approved design and final operating topology can diverge, requiring documented changes rather than silent drift. It does not directly resolve the controlling requirement. The targeted response is: Implement a supported VSF topology with consistent member identities, stack links and role expectations, and validate member failover. Scenario: An access stack uses one daisy-chain link and its owner expects ring resilience despite a missing return connection.

Create a controlled activation and validation order for routing peers, route redistribution and default gateway reachability. This step pertains to Routing and convergence implementation gates but is not one of the two complementary decisions in this case. The required response and evidence are: Document inter-switch, keepalive and upstream links according to the chosen HA topology with distinct failure paths where applicable. Together with: Check interface-to-interface maps, VSX ISL or VSF links, keepalive transport, LAG membership and independent power routes. Scenario: An access stacking diagram omits the final member's return link despite requiring a ring topology.

Compare installation photos, running and startup configs, topology neighbors, asset inventory and exception log. 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: Document inter-switch, keepalive and upstream links according to the chosen HA topology with distinct failure paths where applicable. Together with: Check interface-to-interface maps, VSX ISL or VSF links, keepalive transport, LAG membership and independent power routes. Scenario: An access stacking diagram omits the final member's return link despite requiring a ring topology.

Operators identify cause and sequence across devices with aligned timestamps rather than attributing unrelated events. This step pertains to AOS-CX log event and timestamp correlation but is not one of the two complementary decisions in this case. The required response and evidence are: Document inter-switch, keepalive and upstream links according to the chosen HA topology with distinct failure paths where applicable. Together with: Check interface-to-interface maps, VSX ISL or VSF links, keepalive transport, LAG membership and independent power routes. Scenario: An access stacking diagram omits the final member's return link despite requiring a ring topology.

Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure. This action instead applies to VRRP or active gateway redundant gateway behavior. A shared-looking gateway IP does not prove failover is configured or that the chosen platform supports the intended mechanism. It does not directly resolve the controlling requirement. The targeted response is: Use separate VRFs for management, corporate, and guest routing where specified, with explicit approved inter-VRF connectivity. Scenario: A developer assumes a host in VRF A can reach a server in VRF B without any route leaking or firewall path.

Configure matching OSPF neighbor parameters, interfaces and area membership, then check route learning after adjacency forms. This action instead applies to OSPF adjacency and area configuration. OSPF routing needs compatible neighbor settings and valid route advertisement, not simply enabled routing processes. It does not directly resolve the controlling requirement. The targeted response is: Use separate VRFs for management, corporate, and guest routing where specified, with explicit approved inter-VRF connectivity. Scenario: A developer assumes a host in VRF A can reach a server in VRF B without any route leaking or firewall path.

Identify LAG members that fail to bundle due to system ID, LACP mode, peer-group, speed or VLAN incompatibility. This action instead applies to LACP aggregation mismatch investigation. A connected Ethernet cable does not establish a valid LACP member when peer and interface attributes differ. It does not directly resolve the controlling requirement. The targeted response is: Use separate VRFs for management, corporate, and guest routing where specified, with explicit approved inter-VRF connectivity. Scenario: A developer assumes a host in VRF A can reach a server in VRF B without any route leaking or firewall path.

Inspect routing process events, neighbor restart counters, route-table changes, forwarding next hops and convergence timestamps. This step pertains to Routing adjacency and convergence telemetry interpretation but is not one of the two complementary decisions in this case. The required response and evidence are: Compare deployed AOS-CX configurations against approved Aruba Central templates or version-controlled intended state and record exceptions. Together with: Inspect desired versus running settings, group assignments, local overrides, timestamps and change-owner approvals. Scenario: A port-security setting differs across identical access closets after an emergency manual exception.

Traffic uses intended primary or equal-cost links, and backup paths assume load when the active route fails. 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: Compare deployed AOS-CX configurations against approved Aruba Central templates or version-controlled intended state and record exceptions. Together with: Inspect desired versus running settings, group assignments, local overrides, timestamps and change-owner approvals. Scenario: A port-security setting differs across identical access closets after an emergency manual exception.

Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. This step pertains to Config template test and promotion pipeline but is not one of the two complementary decisions in this case. The required response and evidence are: Compare deployed AOS-CX configurations against approved Aruba Central templates or version-controlled intended state and record exceptions. Together with: Inspect desired versus running settings, group assignments, local overrides, timestamps and change-owner approvals. Scenario: A port-security setting differs across identical access closets after an emergency manual exception.

Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. This step pertains to Branch distribution and collapse-core topology selection but is not one of the two complementary decisions in this case. The required response and evidence are: Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware. Together with: Review site power circuits, PSU ratings, environmental constraints, rack elevations and OOB console reachability. Scenario: New aggregation chassis arrive without enough reserved rack depth or adequate cooling clearance.

Automation reads or modifies only authorized switch resources with a confirmable result and rollback option. 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: Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware. Together with: Review site power circuits, PSU ratings, environmental constraints, rack elevations and OOB console reachability. Scenario: New aggregation chassis arrive without enough reserved rack depth or adequate cooling clearance.

Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. This step pertains to Resiliency capability evaluation VSX and VSF but is not one of the two complementary decisions in this case. The required response and evidence are: Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware. Together with: Review site power circuits, PSU ratings, environmental constraints, rack elevations and OOB console reachability. Scenario: New aggregation chassis arrive without enough reserved rack depth or adequate cooling clearance.

Priority traffic improves at congestion without silently starving business-critical bulk services. This result is associated with QoS classification repair with before/after measures; it does not demonstrate the requested network behavior. The relevant acceptance test is: The failing service recovers after a traceable bounded change and its original healthy behavior remains intact. Scenario: An operator considers replacing every access switch because a single VLAN template change coincided with an outage.

The specific workload driving CPU spikes is isolated and reduced while valid control-plane features remain enabled. This result is associated with High CPU and control-plane protocol churn; it does not demonstrate the requested network behavior. The relevant acceptance test is: The failing service recovers after a traceable bounded change and its original healthy behavior remains intact. Scenario: An operator considers replacing every access switch because a single VLAN template change coincided with an outage.

Reviewers can trace a stated service requirement to deployed configuration and a reproducible acceptance test. This result is associated with Requirements-to-configuration traceability matrix; it does not demonstrate the requested network behavior. The relevant acceptance test is: The failing service recovers after a traceable bounded change and its original healthy behavior remains intact. Scenario: An operator considers replacing every access switch because a single VLAN template change coincided with an outage.

Configure BGP neighbor identity, AS relationships, reachability and import/export controls, then validate actual installed routes. This step pertains to BGP peer establishment and route policy validation but is not one of the two complementary decisions in this case. The required response and evidence are: Configure VLAN SVIs or routed physical interfaces within the correct VRF and validate address, administrative status and neighbor reachability. Together with: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: An upstream routed link is left in the wrong VRF so connected prefixes do not enter the intended routing table.

Priority traffic improves at congestion without silently starving business-critical bulk services. This step pertains to QoS classification repair with before/after measures but is not one of the two complementary decisions in this case. The required response and evidence are: Configure VLAN SVIs or routed physical interfaces within the correct VRF and validate address, administrative status and neighbor reachability. Together with: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: An upstream routed link is left in the wrong VRF so connected prefixes do not enter the intended routing table.

Compare installed routing table, OSPF or BGP candidate paths, forwarding next hops and configured preferences. 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: Configure VLAN SVIs or routed physical interfaces within the correct VRF and validate address, administrative status and neighbor reachability. Together with: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: An upstream routed link is left in the wrong VRF so connected prefixes do not enter the intended routing table.

Inspect allowed VLAN lists, IP plans, gateway addresses, routes and dependency owners at each change stage. These checks can help with Dependency ordering for VLAN and routed cutovers, but they are not the most discriminating first evidence here. Examine: Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. Scenario: Two switches are described as redundant even though their required peer links and keepalive paths were never planned.

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: Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. Scenario: Two switches are described as redundant even though their required peer links and keepalive paths were never planned.

Inspect VLAN inventory, per-interface native versus tagged behavior, allowed VLANs and peer trunk configuration. These checks can help with Access VLAN and trunk allowed-list design, but they are not the most discriminating first evidence here. Examine: Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. Scenario: Two switches are described as redundant even though their required peer links and keepalive paths were never planned.