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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.

Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. This action instead applies to Config template test and promotion pipeline. Templating improves consistency but unscoped variables can replicate errors across entire fleets. It does not directly resolve the controlling requirement. The targeted response is: Recover a failed AOS-CX switch with supported image, saved configuration, verified physical inventory and secure credential restoration. Scenario: A replacement access switch has different port numbering but the team blindly restores old uplink definitions.

Use supported Network Analytics Engine monitors and rules to correlate switch database state with alerts and historical graphs. This action instead applies to NAE agent and threshold monitoring. NAE rules evaluate monitored data and can trigger alerts; a script must be enabled and scoped, not merely uploaded. It does not directly resolve the controlling requirement. The targeted response is: Recover a failed AOS-CX switch with supported image, saved configuration, verified physical inventory and secure credential restoration. Scenario: A replacement access switch has different port numbering but the team blindly restores old uplink definitions.

Onboard a supported AOS-CX switch to the approved Aruba Central tenant, inventory and group with valid subscription and reachability before pushing managed configuration. This action instead applies to Aruba Central inventory onboarding and assignment. Cloud management requires correct tenant ownership and reachability; a claimed serial number is not proof the device has applied a template. It does not directly resolve the controlling requirement. The targeted response is: Recover a failed AOS-CX switch with supported image, saved configuration, verified physical inventory and secure credential restoration. Scenario: A replacement access switch has different port numbering but the team blindly restores old uplink definitions.

Create LAG groups with matching LACP negotiation, physical rates, VLAN configuration and supported hash behavior. This step pertains to LACP link aggregation member consistency but is not one of the two complementary decisions in this case. The required response and evidence are: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Together with: Inspect reverse-path forwarding, PIM neighbors, rendezvous-point design if applicable, multicast route state and IGMP memberships. Scenario: Operators configure IGMP snooping only and expect multicast to cross L3 VLAN interfaces automatically.

Review Central group type, effective configuration, variable bindings, supported template syntax and local override restrictions. This step pertains to Central UI group versus template configuration scope but is not one of the two complementary decisions in this case. The required response and evidence are: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Together with: Inspect reverse-path forwarding, PIM neighbors, rendezvous-point design if applicable, multicast route state and IGMP memberships. Scenario: Operators configure IGMP snooping only and expect multicast to cross L3 VLAN interfaces automatically.

The correct DHCP response traverses the client access path without allowing rogue servers. This step pertains to DHCP snooping and client boot failure identification but is not one of the two complementary decisions in this case. The required response and evidence are: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Together with: Inspect reverse-path forwarding, PIM neighbors, rendezvous-point design if applicable, multicast route state and IGMP memberships. Scenario: Operators configure IGMP snooping only and expect multicast to cross L3 VLAN interfaces automatically.

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 expected endpoint VLAN reaches the correct gateway without inadvertently enabling unrelated VLANs. Scenario: A subnet works within one building but stops crossing a distribution trunk after a template update.

The link stabilizes with no recurring CRC/LOS errors and normal forwarding on the intended path. This result is associated with Optic and port fault replacement strategy; it does not demonstrate the requested network behavior. The relevant acceptance test is: The expected endpoint VLAN reaches the correct gateway without inadvertently enabling unrelated VLANs. Scenario: A subnet works within one building but stops crossing a distribution trunk after a template update.

Only intended route entries recover in the correct VRF and failover remains predictable. This result is associated with OSPF route recovery with controlled scope; it does not demonstrate the requested network behavior. The relevant acceptance test is: The expected endpoint VLAN reaches the correct gateway without inadvertently enabling unrelated VLANs. Scenario: A subnet works within one building but stops crossing a distribution trunk after a template update.

Correct QoS trust, classification and queue mapping on the affected path, then compare loss and latency under representative load. This action instead applies to QoS classification repair with before/after measures. End-to-end QoS success requires traffic markings and queue treatment; increasing link speed may mask misclassification temporarily. It does not directly resolve the controlling requirement. The targeted response is: Check release notes, affected features, config backup and approved rollback before applying AOS-CX software changes to address a suspected defect. Scenario: A campus core upgrade completes but the team never verifies post-boot peer synchronization or saved configurations.

Use supported Network Analytics Engine monitors and rules to correlate switch database state with alerts and historical graphs. This action instead applies to NAE agent and threshold monitoring. NAE rules evaluate monitored data and can trigger alerts; a script must be enabled and scoped, not merely uploaded. It does not directly resolve the controlling requirement. The targeted response is: Check release notes, affected features, config backup and approved rollback before applying AOS-CX software changes to address a suspected defect. Scenario: A campus core upgrade completes but the team never verifies post-boot peer synchronization or saved configurations.

Repair LACP member identity or negotiation mismatches on both peers rather than converting a redundant uplink into unmonitored standalone links. This action instead applies to LACP peer repair without unsafe bypass. A forced standalone port can create loops or inconsistent L2 forwarding when LACP pairing is required. It does not directly resolve the controlling requirement. The targeted response is: Check release notes, affected features, config backup and approved rollback before applying AOS-CX software changes to address a suspected defect. Scenario: A campus core upgrade completes but the team never verifies post-boot peer synchronization or saved configurations.

Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history. This action instead applies to Operational state and baseline configuration differences. A baseline is a set of comparable conditions, not a single healthy green status indicator. It does not directly resolve the controlling requirement. The targeted response is: Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. Scenario: A Central template contains a hardcoded VLAN uplink list and is pushed to every campus model unchanged.

Interpret sustained and peak port utilization alongside errors, queue drops and application quality before deciding on upgrades. This action instead applies to Interface utilization and capacity trend interpretation. Long-term averages alone may hide microbursts or fail to prove that a slow application requires a faster physical port. It does not directly resolve the controlling requirement. The targeted response is: Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. Scenario: A Central template contains a hardcoded VLAN uplink list and is pushed to every campus model unchanged.

Correct QoS trust, classification and queue mapping on the affected path, then compare loss and latency under representative load. This action instead applies to QoS classification repair with before/after measures. End-to-end QoS success requires traffic markings and queue treatment; increasing link speed may mask misclassification temporarily. It does not directly resolve the controlling requirement. The targeted response is: Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. Scenario: A Central template contains a hardcoded VLAN uplink list and is pushed to every campus model unchanged.

Inspect RADIUS server reachability/secret, authentication session state, EAP exchange, assigned role and rejection logs. These checks can help with 802.1X and RADIUS port authentication, but they are not the most discriminating first evidence here. Examine: Check endpoint identity, allowed MAC profiles, primary 802.1X attempts, fallback order, authentication timeout and role policy. Scenario: A printer is moved to a new access port and authentication logs show the fallback role was never applied.

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: Check endpoint identity, allowed MAC profiles, primary 802.1X attempts, fallback order, authentication timeout and role policy. Scenario: A printer is moved to a new access port and authentication logs show the fallback role was never applied.

Check per-VRF interfaces and routes, policy-based leaks, next hop resolution and source/destination acceptance tests. These checks can help with VRF isolation and controlled route leaking, but they are not the most discriminating first evidence here. Examine: Check endpoint identity, allowed MAC profiles, primary 802.1X attempts, fallback order, authentication timeout and role policy. Scenario: A printer is moved to a new access port and authentication logs show the fallback role was never applied.

Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state. This action instead applies to Inventory and licensing lifecycle control. Inventory quality affects support and maintenance; a running switch is not proof its services or support are entitled. It does not directly resolve the controlling requirement. The targeted response is: Interpret VSX health, keepalive, ISL, synchronization and active-gateway status before planning peer maintenance. Scenario: A replacement peer rejoins but selected VLAN configuration remains out of sync and some endpoints lose access.

Repair LACP member identity or negotiation mismatches on both peers rather than converting a redundant uplink into unmonitored standalone links. This action instead applies to LACP peer repair without unsafe bypass. A forced standalone port can create loops or inconsistent L2 forwarding when LACP pairing is required. It does not directly resolve the controlling requirement. The targeted response is: Interpret VSX health, keepalive, ISL, synchronization and active-gateway status before planning peer maintenance. Scenario: A replacement peer rejoins but selected VLAN configuration remains out of sync and some endpoints lose access.

Maintain approved maintenance records, affected path inventory, user notices and postchange validation for recurring wired network work. This action instead applies to Scheduled change window and impact communication. Maintenance success depends on operational coordination as well as command execution and hardware status. It does not directly resolve the controlling requirement. The targeted response is: Interpret VSX health, keepalive, ISL, synchronization and active-gateway status before planning peer maintenance. Scenario: A replacement peer rejoins but selected VLAN configuration remains out of sync and some endpoints lose access.

Use scheduled and validated AOS-CX software maintenance with platform-specific images, checkpoints and supported fallback approach. This action instead applies to Firmware maintenance compatibility and image fallback. Software maintenance must verify active image and network behavior rather than stop at successful upload of a file. It does not directly resolve the controlling requirement. The targeted response is: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Scenario: A printer fleet lacks EAP supplicants but the deployment plan has no governed MAB fallback.

Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. This action instead applies to Branch distribution and collapse-core topology selection. Topology choice should follow the failure and growth profile, not simply replicate a large-campus diagram at every site. It does not directly resolve the controlling requirement. The targeted response is: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Scenario: A printer fleet lacks EAP supplicants but the deployment plan has no governed MAB fallback.

Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives. This action instead applies to Resiliency capability evaluation VSX and VSF. VSF presents a logical stack while VSX supports peer coordination with independent control planes on appropriate platforms. It does not directly resolve the controlling requirement. The targeted response is: Include RADIUS, certificate, role assignment, ACL and fallback dependencies in switching deployment sequencing. Scenario: A printer fleet lacks EAP supplicants but the deployment plan has no governed MAB fallback.

Inspect RADIUS server reachability/secret, authentication session state, EAP exchange, assigned role and rejection logs. These checks can help with 802.1X and RADIUS port authentication, but they are not the most discriminating first evidence here. Examine: Inspect role download status, authentication result, role mapping, ACL application, device/platform support and enforcement counters. Scenario: An IoT onboarding design assigns VLANs but does not enforce the intended east-west traffic restrictions.

Inspect pilot scope, affected VLANs, critical service hours, change batches, spare equipment and rollback readiness. These checks can help with Multisite change phasing and blast radius reduction, but they are not the most discriminating first evidence here. Examine: Inspect role download status, authentication result, role mapping, ACL application, device/platform support and enforcement counters. Scenario: An IoT onboarding design assigns VLANs but does not enforce the intended east-west traffic restrictions.

Inspect authorized DHCP server ports, binding tables, protected VLANs, ARP counters and switch feature support. These checks can help with Port security and DHCP/ARP spoofing defenses, but they are not the most discriminating first evidence here. Examine: Inspect role download status, authentication result, role mapping, ACL application, device/platform support and enforcement counters. Scenario: An IoT onboarding design assigns VLANs but does not enforce the intended east-west traffic restrictions.

Inspect aggregate state, member operational rates, LACP partner/system IDs, VLAN tags and individual member counters. These checks can help with LACP link aggregation member consistency, but they are not the most discriminating first evidence here. Examine: Inspect per-VRF interface ownership, route table, import/export controls and packet path security enforcement. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.

Inspect LACP neighbor identity, actor/partner keys, aggregated member state, group configuration and per-member counters. These checks can help with LACP aggregation mismatch investigation, but they are not the most discriminating first evidence here. Examine: Inspect per-VRF interface ownership, route table, import/export controls and packet path security enforcement. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.

Inspect interface admin/oper state, optic transmit/receive power, CRC/FCS counters, negotiated speed and neighbor light levels. These checks can help with Physical link failure diagnostics, but they are not the most discriminating first evidence here. Examine: Inspect per-VRF interface ownership, route table, import/export controls and packet path security enforcement. Scenario: A guest captive portal requires one approved service but its VRF has no route to the policy gateway.