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Inspect process CPU over time, event logs, topology change rate, protocol adjacency resets and agent schedules. These checks can help with High CPU and control-plane protocol churn, but they are not the most discriminating first evidence here. Examine: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: A new VLAN has an SVI address but no active ports and its gateway appears unreachable to clients.

Inspect TCP reachability, neighbor remote AS, update source, next hop, accepted/advertised prefixes and policy counters. These checks can help with BGP peer establishment and route policy validation, but they are not the most discriminating first evidence here. Examine: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: A new VLAN has an SVI address but no active ports and its gateway appears unreachable to clients.

Check actual watt draw, negotiated 802.3af/at/bt class, switch budget, PSU status and power priorities. These checks can help with Power and PoE field commissioning, but they are not the most discriminating first evidence here. Examine: Check VLAN active members, SVI IP prefix, routing state, VRF membership, connected routes and ARP/ND entries. Scenario: A new VLAN has an SVI address but no active ports and its gateway appears unreachable to clients.

Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. These checks can help with Resiliency capability evaluation VSX and VSF, but they are not the most discriminating first evidence here. Examine: Review endpoint counts by class, anticipated additions, PoE budgets and uplink utilization peaks. Scenario: Forty-eight access sockets are filled on launch day with no spare for additional cameras.

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: Review endpoint counts by class, anticipated additions, PoE budgets and uplink utilization peaks. Scenario: Forty-eight access sockets are filled on launch day with no spare for additional cameras.

Compare signed requirement matrix, design revision, target firmware, selected feature and test result IDs. These checks can help with Requirements-to-configuration traceability matrix, but they are not the most discriminating first evidence here. Examine: Review endpoint counts by class, anticipated additions, PoE budgets and uplink utilization peaks. Scenario: Forty-eight access sockets are filled on launch day with no spare for additional cameras.

Inspect hello and dead intervals, area ID, authentication, MTU, network type, neighbor state and OSPF routes. This step pertains to OSPF adjacency and area configuration 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: A batch automation job alters ten VLANs without storing a pre-change checkpoint for comparison.

The intended aggregate forms and remains stable under a member unplug test. This step pertains to LACP peer repair without unsafe bypass 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: A batch automation job alters ten VLANs without storing a pre-change checkpoint for comparison.

Restrict SSH, HTTPS and management VRF exposure and apply individual authenticated administrator roles before enabling remote management. 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: A batch automation job alters ten VLANs without storing a pre-change checkpoint for comparison.

The end-to-end link establishes at the intended speed with acceptable power levels and no unsupported optics alarms. This result is associated with Optical and copper media compatibility; it does not demonstrate the requested network behavior. The relevant acceptance test is: Authorized endpoints receive expected segmentation after cutover while unauthorized ones remain isolated and administrators retain recovery access. Scenario: A floor is migrated to 802.1X before its switches can reach the new RADIUS servers.

The design isolates a failed building uplink without creating unnecessary bridging loops or uncontrolled outage domains. This result is associated with Branch distribution and collapse-core topology selection; it does not demonstrate the requested network behavior. The relevant acceptance test is: Authorized endpoints receive expected segmentation after cutover while unauthorized ones remain isolated and administrators retain recovery access. Scenario: A floor is migrated to 802.1X before its switches can reach the new RADIUS servers.

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: Authorized endpoints receive expected segmentation after cutover while unauthorized ones remain isolated and administrators retain recovery access. Scenario: A floor is migrated to 802.1X before its switches can reach the new RADIUS servers.

Document inter-switch, keepalive and upstream links according to the chosen HA topology with distinct failure paths where applicable. This action instead applies to Resilient peer cabling and link map. Redundant links must be physically and logically identified; duplicate cables through one failure point are not independent resilience. It does not directly resolve the controlling requirement. The targeted response is: Validate PoE power supply capacity, cable pairs and endpoint class before activating powered devices or redundant PSU policies. Scenario: High-power wireless access points restart whenever a full closet of phones powers on.

Prepare DHCP, provisioning endpoint reachability, management VLAN or VRF and initial credentials for safe zero-touch provisioning. This action instead applies to ZTP bootstrapping and management plane reachability. ZTP automates bootstrap only when the required discovery and management dependencies function correctly. It does not directly resolve the controlling requirement. The targeted response is: Validate PoE power supply capacity, cable pairs and endpoint class before activating powered devices or redundant PSU policies. Scenario: High-power wireless access points restart whenever a full closet of phones powers on.

Validate port maps, patching, labeling and redundant path diversity as part of physical switch commissioning. This action instead applies to Front-panel and cabling as-built verification. Physical cable mapping is a prerequisite for interpreting adjacency and uplink failover tests correctly. It does not directly resolve the controlling requirement. The targeted response is: Validate PoE power supply capacity, cable pairs and endpoint class before activating powered devices or redundant PSU policies. Scenario: High-power wireless access points restart whenever a full closet of phones powers on.

Use approved MAC authentication or critical-role treatment for devices lacking supplicants with explicit limited privileges and monitoring. This step pertains to MAC authentication and critical access fallback but is not one of the two complementary decisions in this case. The required response and evidence are: Apply supported access-edge protection such as DHCP snooping, ARP inspection or MAC controls where appropriate and validate trust boundaries. Together with: Inspect authorized DHCP server ports, binding tables, protected VLANs, ARP counters and switch feature support. Scenario: An attacker advertises false IP-to-MAC mappings on a guest port and the network lacks appropriate inspection.

Inspect aggregate state, member operational rates, LACP partner/system IDs, VLAN tags and individual member counters. 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: Apply supported access-edge protection such as DHCP snooping, ARP inspection or MAC controls where appropriate and validate trust boundaries. Together with: Inspect authorized DHCP server ports, binding tables, protected VLANs, ARP counters and switch feature support. Scenario: An attacker advertises false IP-to-MAC mappings on a guest port and the network lacks appropriate inspection.

Every required capability is supported on the selected hardware and validated release, with documented exceptions for unsupported functions. This step pertains to AOS-CX feature and software compatibility matrix but is not one of the two complementary decisions in this case. The required response and evidence are: Apply supported access-edge protection such as DHCP snooping, ARP inspection or MAC controls where appropriate and validate trust boundaries. Together with: Inspect authorized DHCP server ports, binding tables, protected VLANs, ARP counters and switch feature support. Scenario: An attacker advertises false IP-to-MAC mappings on a guest port and the network lacks appropriate inspection.

Validate port maps, patching, labeling and redundant path diversity as part of physical switch commissioning. This action instead applies to Front-panel and cabling as-built verification. Physical cable mapping is a prerequisite for interpreting adjacency and uplink failover tests correctly. It does not directly resolve the controlling requirement. The targeted response is: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Scenario: A multicast video source works in its own VLAN but no remote site receives the group across a routed boundary.

Roll out switching changes through a representative pilot, dependency validation and site-by-site acceptance instead of an unchecked big-bang change. This action instead applies to Multisite change phasing and blast radius reduction. Staged delivery contains risk and ensures site-specific exceptions are known before full deployment. It does not directly resolve the controlling requirement. The targeted response is: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Scenario: A multicast video source works in its own VLAN but no remote site receives the group across a routed boundary.

Use IGMP snooping and a suitable querier or routed multicast context to constrain multicast replication to interested ports. This action instead applies to IGMP snooping L2 multicast receiver control. IGMP snooping relies on correct membership signaling and appropriate querier behavior; static VLAN existence is insufficient. It does not directly resolve the controlling requirement. The targeted response is: Enable supported multicast routing mode and appropriate PIM relationships where stream sources and listeners span routed domains. Scenario: A multicast video source works in its own VLAN but no remote site receives the group across a routed boundary.

Inspect identity server reachability, time synchronization, EAP settings, downloadable role support, exceptions and emergency access. These checks can help with Security and authentication migration coordination, but they are not the most discriminating first evidence here. Examine: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: A script hardcodes /rest/v1 on switches upgraded past firmware where that API is deprecated.

Inspect target resource, writable fields, current object representation, HTTP status, expected diff and checkpoint restore path. These checks can help with Idempotent REST updates and config difference verification, but they are not the most discriminating first evidence here. Examine: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: A script hardcodes /rest/v1 on switches upgraded past firmware where that API is deprecated.

Inspect alert provenance, affected services, neighbor failures, threshold history and last known change. These checks can help with Troubleshooting evidence dashboard and incident triage, but they are not the most discriminating first evidence here. Examine: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: A script hardcodes /rest/v1 on switches upgraded past firmware where that API is deprecated.

Correlate performance alarms with actual interface, application and configuration history before treating a reporting threshold as a hardware failure. This action instead applies to Telemetry false-positive and baseline drift analysis. A dashboard spike may be a sampling or threshold artifact; monitoring values require context and reliable collection. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: A large multicast application saturates office uplinks although only a subset of users subscribed.

Turn a wired network design into sequenced change steps with prerequisites, measurable acceptance tests, decision gates and rollback. This action instead applies to Implementation plan preflight and rollback criteria. A network drawing is not an implementation plan without timing, safe transitions and testable rollback. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: A large multicast application saturates office uplinks although only a subset of users subscribed.

Use high-frequency interface and queue evidence to distinguish short microbursts from sustained bandwidth saturation. This action instead applies to Microburst and oversubscription performance analysis. Five-minute average utilization may conceal millisecond microbursts that exhaust shallow queues. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: A large multicast application saturates office uplinks although only a subset of users subscribed.

Document inter-switch, keepalive and upstream links according to the chosen HA topology with distinct failure paths where applicable. This action instead applies to Resilient peer cabling and link map. Redundant links must be physically and logically identified; duplicate cables through one failure point are not independent resilience. It does not directly resolve the controlling requirement. The targeted response is: Classify traffic at supported trust boundaries and map DSCP/802.1p markings into queues consistent with the approved policy. Scenario: A voice call stream is tagged EF by a trusted phone but the uplink interface resets its marking to best-effort.

Apply supported downloadable user roles or dynamic segmentation so authenticated client classes receive consistent least-privilege network access. This action instead applies to Dynamic segmentation downloadable roles policy. Identity-based roles and VLAN assignment are separate configuration layers; a role must download and enforce successfully. It does not directly resolve the controlling requirement. The targeted response is: Classify traffic at supported trust boundaries and map DSCP/802.1p markings into queues consistent with the approved policy. Scenario: A voice call stream is tagged EF by a trusted phone but the uplink interface resets its marking to best-effort.

Restrict SSH, HTTPS and management VRF exposure and apply individual authenticated administrator roles before enabling remote management. This action instead applies to AOS-CX secure management access setup. Secure management requires both service availability and scoped authorization; turning on HTTPS on every VRF is not a required convenience. It does not directly resolve the controlling requirement. The targeted response is: Classify traffic at supported trust boundaries and map DSCP/802.1p markings into queues consistent with the approved policy. Scenario: A voice call stream is tagged EF by a trusted phone but the uplink interface resets its marking to best-effort.

Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops. These checks can help with OSPF route recovery with controlled scope, but they are not the most discriminating first evidence here. Examine: Review traffic direction, rate limits, burst settings, platform QoS resources and class-of-service monitoring. Scenario: A guest uplink needs a bounded ingress rate but the design specifies only a downstream egress action.

Inspect active configuration context, interface name, running configuration, link state, peer capabilities and software help. These checks can help with AOS-CX interface configuration hierarchy, but they are not the most discriminating first evidence here. Examine: Review traffic direction, rate limits, burst settings, platform QoS resources and class-of-service monitoring. Scenario: A guest uplink needs a bounded ingress rate but the design specifies only a downstream egress action.

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: Review traffic direction, rate limits, burst settings, platform QoS resources and class-of-service monitoring. Scenario: A guest uplink needs a bounded ingress rate but the design specifies only a downstream egress action.