HP HPE Aruba Networking Certified Professional - Switching HPE7-A08 Exam Dumps: Updated Questions & Answers (November 2026)

Capacity management in a high-density wireless environment (especially with Wi-Fi 6E APs like the AP-615) focuses on two finite resources: Bandwidth and Power.

Switch PoE Utilization (Option D): AP-615s are high-performance devices that typically require PoE+ (802.3at) power. As more APs are added to a switch, the total power draw approaches the switch ' s PoE Budget. Enabling this alert ensures that Central notifies the administrator when the total power consumed by the APs reaches a critical threshold, preventing a scenario where new APs fail to power up or existing APs reboot due to power starvation.

Switch Uplink Port Usage (Option A): This alert monitors the aggregate traffic flowing through the switch ' s uplinks to the core or distribution layer. Since multiple APs share these uplinks, high wireless client activity can saturate the backhaul. Monitoring the " Uplink Port Usage " (measured in GB over a duration) allows the customer to identify when they need to upgrade to higher-speed transceivers (e.g., from 10G to 25G) or add more links to the LAG.

Why other options are incorrect:

Options C and E: Port Tx/Rx rates are useful for monitoring individual ports, but " Capacity Issues " for a group of APs is better represented by the aggregate Uplink usage.

Option B: Link Status Change notifies you of a down/up event, which is a connectivity/fault issue rather than a capacity/utilization issue.

LACP (Link Aggregation Control Protocol) modes can be active or passive. When two switches are both configured in passive mode, no LACP packets are initiated, causing the link aggregation to fail or go into a block state.

Changing one side from passive to active causes that switch to initiate LACP negotiation, resolving the block state.

Changing to static mode disables LACP negotiation, which is not recommended unless both sides are static.

Changing timeout does not solve LACP block issues caused by mode mismatches.

Therefore, changing one switch’s LACP mode from passive to active is necessary to resolve the block.

The configuration explicitly contains ip igmp version 2 , which overrides the normal AOS-CX IGMP version selection for this Layer 3 VLAN interface. HPE Aruba Networking documents the default IGMP version as IGMPv3 . The ip igmp version < VERSION > command permits either version 2 or version 3, and removing the explicit version configuration restores the interface to the default of IGMPv3 . Therefore, configuring version 2 represents a custom, non-default IGMP version , making option D correct. Aruba Networks

The commands have separate multicast functions. ip igmp enable enables IGMP operation on VLAN 2222 so the Layer 3 interface can process multicast membership information from attached receivers. ip pim-sparse enable enables PIM Sparse Mode on that routed interface, allowing the switch to participate in multicast routing and build multicast distribution trees toward other PIM routers. HPE Aruba configuration examples show PIM-SM and IGMP enabled together on receiver-facing routed interfaces. Aruba Networks

PIM is therefore not a requirement for ordinary Layer 2 multicast forwarding , and neither is it required merely to perform generic local Layer 3 unicast routing. Its role is specifically multicast routing between Layer 3 interfaces .

Study Guide References: IGMP Configuration; IGMPv2/IGMPv3; PIM Sparse Mode; Multicast Receiver Membership; Layer 3 Multicast Routing.

To prevent the campus core from seeing the data center core as the root bridge in a spanning tree topology (which can cause suboptimal paths or loops), Root Guard should be applied on the campus-to-data center core link. Root Guard enforces root bridge placement by blocking any superior BPDU from a downstream switch, maintaining the intended root bridge location.

BPDU filter blocks BPDUs entirely, which can cause problems.

Admin edge and BPDU guard are related to edge port protection, not root placement control.

Valid Network Analytics Engine (NAE) agent actions include:

Running CLI commands (Option A), allowing automated command execution for remediation or data collection.

Generating local system logs (Option C) for event tracking and audit purposes.

Other options:

Generating SNMP traps (B) and starting/stopping packet captures (D) are not typical NAE actions.

Creating a new TAC case (E) is an external process, not an automated NAE action.

When User-Based Tunneling (UBT) is configured and HTTPS-enabled websites fail to load, this often relates to issues with packet fragmentation. The solution is to enable IP fragmentation on the devices to allow large tunneled packets to be properly fragmented and reassembled.

Path MTU discovery is helpful but may be blocked in some networks.

Fragment reassembly is usually on the receiving end.

Jumbo frames may not resolve fragmentation across tunneled paths.

Therefore, enabling IP fragmentation is the most effective solution.

In the AOS-CX architecture, a Local User Role (LUR) is a logical container that defines the network privileges and connectivity settings for a client once they have been successfully authenticated. Unlike " Downloadable User Roles " (DUR), which are stored on ClearPass, LURs are defined directly in the switch configuration.

VLAN Assignment (Option A): One of the primary functions of a user role is to dynamically assign a client to a specific VLAN. This allows the physical port to remain " colorless " —the port ' s VLAN membership is determined by the identity of the user rather than a static configuration on the interface.

ACL (Access Control List) (Option E): To enforce " Least Privilege " security, LURs allow you to attach an IPv4 or IPv6 ACL directly to the role. This ensures that even if two users are in the same VLAN, their traffic can be filtered differently based on the role they were assigned (e.g., a " Contractor " role might have an ACL blocking access to internal servers, while an " Employee " role does not).

Why other options are incorrect:

Option B: The ClearPass server is part of the global AAA (RADIUS) configuration. It is the destination for authentication requests, not a parameter defined within a specific user role.

Option C: While many CLI commands allow for a description, it is a metadata field for administrative clarity and is not considered a functional " parameter " of network enforcement in the context of the ACP-S exam.

Option D: Authentication methods (like 802.1X or MAC-auth) are the triggers that result in a role being applied. They are configured at the interface or global level, not inside the role itself.

The error message " Invalid input: interface " typically appears if the switch is managed by HPE Aruba Central, which restricts CLI interface configuration to prevent configuration drift. When managed externally, certain commands are disabled or locked.

Password recovery mode or authorization enabled would not cause this error.

Manager context is not a concept in Aruba CX CLI.

To resolve this QoS mapping issue on AOS-CX, you must understand the hierarchy of Trust Levels and how they interact with Link Aggregation Groups (LAGs).

Trust Hierarchy: AOS-CX switches use a " top-down " approach for QoS.

Global Trust: Setting qos trust dscp globally means that, by default, every port on the switch will look at the Layer 3 DSCP markings to determine queue priority.

Interface Override: You can override the global setting on a per-interface basis. If a specific device or service (like the video streaming service in this prompt) relies solely on Layer 2 CoS (802.1p) markings rather than DSCP, the switch will ignore those CoS markings under the global DSCP policy and place the traffic in a default (best-effort) queue.

LAG Configuration Logic: In the AOS-CX architecture, a LAG is a logical interface (interface lag 20).

Configuration parameters for the bundle (such as VLANs, ACLs, and QoS trust) should be applied to the logical LAG interface, not the individual physical member ports (1/1/20 and 2/1/20).

Once applied to the LAG, the settings are automatically inherited by all physical members.

Analyzing the Options:

Option D (Correct): By entering the interface lag 20 context and applying qos trust cos, you are instructing the switch to ignore the global DSCP setting for this specific bundle and instead trust the Layer 2 priority bits. This allows the video service to once again map correctly to the intended priority queues.

Option A: This is unnecessarily complex. Setting the physical member ports to qos trust none and then the LAG to cos is redundant because the LAG configuration overrides the physical port settings in this context.

Option B: qos trust dscp, cos is not a valid AOS-CX command. Unlike the older AOS-S (ProCurve) software which allowed a combined dscp-cos trust, AOS-CX requires you to choose a single trust type (DSCP, CoS, or None) per interface.

Option C: This applies the configuration to the physical ports only. In an AOS-CX VSF/LAG environment, this is considered a configuration error or " best practice " violation, as the logical LAG interface should hold the configuration.

To isolate wired ports on the same VLAN on a large scale (such as hotel rooms) but allow communication within the same VLAN for common areas, Private VLANs (PVLANs) are recommended. PVLANs allow segmentation within a single VLAN by dividing it into primary and secondary VLANs, controlling communication between ports.

VPN and VXLAN are overlay technologies for different purposes.

UBT (User-Based Tunneling) is related to wireless user segmentation, not wired port isolation.

Therefore, PVLANs provide the simplest and most effective solution to isolate room ports within a single VLAN.