HP HPE7-A07 Dumps

The CLI output displays EVPN routes and their corresponding next hops. The "Route Distinguisher" entries followed by IP addresses in the 172.21.11.x range indicate these are loopback addresses used by the underlay network. The underlay network provides the basic routing and forwarding plane for the overlay network that EVPN is part of. These loopback addresses are crucial for the proper functioning of the EVPN control plane.

The Aruba AP-615 is a tri-band Wi-Fi 6E access point, capable of operating on the 2.4 GHz, 5 GHz, and 6 GHz bands. However, in the default configuration, Aruba AP-615 radios operate in dual-band mode (2.4 GHz and 5 GHz).

The 6 GHz radio (the “E” band for Wi-Fi 6E) remains disabled by default until explicitly enabled by configuration through the ArubaOS or Aruba Central interface.

According to the Aruba Access Point Configuration Guide and Wi-Fi 6E Deployment Guide:

“Tri-band APs such as the AP-615 support operation in 2.4GHz, 5GHz, and 6GHz frequency bands. By default, the AP operates in dual-band mode (2.4GHz and 5GHz). The 6GHz band must be explicitly enabled by configuring the radio profile to tri-band mode.”

Thus, when a tri-band SSID is created without explicitly modifying the radio band configuration, the AP-615 continues to use 2.4GHz and 5GHz by default.

Option Analysis:

A. Incorrect – The 6GHz radio is not enabled by default.

B. Correct – Default operation is on the 2.4GHz and 5GHz bands.

C. Incorrect – 6GHz is only enabled through manual configuration.

D. Incorrect – While partially true, the question specifies default tri-band SSID behavior, which defaults to 2.4GHz and 5GHz.

Final Verified Answer: B

Reference Sources (HPE Aruba Official Materials):

Aruba Wi-Fi 6E Access Point Configuration and Deployment Guide

Aruba AP-610 Series Datasheet

ArubaOS 10.x Access Point Configuration Guide – Radio Profiles and Band Operation

default GBP role = GBP role ID = 0

infrastructure GBP role = GBP role ID = 2

user-defined GBP role = GBP role ID = <100-8191>

Comprehensive and Detailed Explanation From Exact Extract of HPE Aruba Networking Switching:

Accurate and trusted time on gateways is essential for audit logs. Aruba gateways and AOS-CX switches support NTP authentication, where the device and the NTP server share cryptographic keys (key-id with MD5/SHA-1 depending on platform). The device accepts time updates only from servers that successfully authenticate, protecting against spoofed NTP responses and time-shifting attacks.

Exact extract:

“Configure NTP authentication to verify time sources. Define an authentication key, mark it as trusted, and associate it with the NTP server. The device will synchronize time only with authenticated servers.”

“Accurate logging relies on NTP. Enabling authentication helps prevent malicious or accidental tampering with system time.”

Thus, enabling and configuring NTP authentication directly secures the time clock against attacks, making B correct.

Option A would block time synchronization; C (a generic ACL) does not provide cryptographic validation; D changes only display/timezone and does not secure the source of time.

References of HPE Aruba Networking Switching documents or Study Guide:

ArubaOS 10 Gateway Management and Security Guide — “Configuring NTP authentication (keys, trusted key, server association).”

Aruba AOS-CX System Management Guide — “Securing NTP and its impact on event/audit logs.”

In this scenario:

All hosts are in VLAN 100

Group-Based Policy (GBP) is applied

H1 belongs to the Marketing role

Policy table for Marketing:

Source

Destination

Action

Marketing

HR

Deny

Marketing

Sales

Permit

Marketing

Finance

Deny

Role Mapping:

Sales: H2, H4

Finance: H3, H5

HR: H6

???? Key Aruba GBP Behavior for ARP

Aruba AOS-CX GBP enforces policy at L3 and L2, and ARP is not treated as unconditional broadcast when GBP roles restrict communication.

Aruba documentation states:

“ARP requests are only forwarded to ports associated with permitted roles.

ARP behavior follows the GBP access-policy rules.”

Since Marketing is only permitted to communicate with Sales, ARP from H1 must only be forwarded toward:

✅ H2 (Sales)

✅ H4 (Sales)

Interfaces:

H2 → port 1/1/1

H4 → port 1/1/3

Therefore, the ARP request is NOT flooded to Finance (H3/H5) or HR (H6), where communication is denied.

❌ Why Other Options Are Incorrect

Option

Why Wrong

B

Would ignore GBP enforcement; too wide of a flood

C

Not dropped — allowed paths exist to Sales

D

ARP is not broadcasted when GBP denies connectivity

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking Wireless Documentation)

The Modulation and Coding Scheme (MCS) determines the data rate that a wireless station uses to transmit or receive data frames. The MCS index selection depends primarily on the signal quality and error conditions observed on the wireless link.

Two factors have a direct and measurable influence:

1. Signal-to-Noise Ratio (SNR)

A higher SNR means better signal quality and less interference, allowing the station to use higher-order modulations (e.g., 64-QAM, 256-QAM, 1024-QAM) corresponding to higher MCS indexes.

When SNR decreases, the client dynamically reduces its MCS rate to maintain reliability.

“Stations dynamically select the highest MCS index that the current SNR can support to maintain an acceptable frame error rate.”

2. Retry Rate

The retry rate reflects retransmissions due to poor frame reception. A high retry rate indicates a high error rate, prompting the station to step down to a lower MCS to improve link stability.

“If retransmissions increase, the MCS rate is reduced until the error rate stabilizes.”

Other Options Explanation:

B. Channel utilization: affects airtime efficiency but not MCS selection directly.

C. Number of connected clients: impacts contention and throughput, not MCS per station.

E. Frequency band: influences propagation and SNR indirectly but does not directly control MCS selection.

✅ Final Verified Answers: A and D

???? Reference Sources (HPE Aruba Official Materials):

Aruba Wi-Fi 6/6E Radio Optimization Guide – Rate Adaptation and MCS Selection

Aruba Certified Mobility Professional (ACMP) Study Guide – Radio Performance and RF Optimization

Aruba WLAN Design Fundamentals – SNR, RSSI, and Rate Adaptation Mechanisms

In a multi-site deployment with a mix of bridged and tunneled SSIDs, if there are session sync errors between different areas, it could be due to connectivity issues with the central management platform, which in the case of Aruba, is likely HPE Aruba Networking Central. This interruption could cause inconsistencies in session states across the network.

In OSPF, the "EXSTART/DR" state indicates that the routers are trying to establish an adjacency but are unable to progress. This can happen if the OSPF network type is incorrectly configured for the type of connection between the routers. Given that R1 and R2 are connected via a point-to-point link (as suggested by the /31 subnet), setting the network type to point-to-point on both routers will remove the need for DR/BDR election, which is unnecessary on a point-to-point link, and allow OSPF to progress past the "EXSTART" state and form a full adjacency.

Comprehensive and Detailed Explanation From Exact Extract of HPE Aruba Networking Switching:

On Aruba switches (AOS-CX/AOS-S), multiple IPv4 networks can be configured on the same VLAN interface (SVI) by assigning a primary address and one or more secondary addresses. The VLAN remains one Layer-2 broadcast domain; adding more IP subnets does not create subinterfaces and does not split the broadcast domain.

Exact extract:

“A VLAN interface may be configured with a primary IP address and additional secondary IP addresses to host multiple subnets on the same Layer-2 broadcast domain.”

“A VLAN is a single broadcast domain. Broadcast and unknown unicast frames are flooded to all ports belonging to the VLAN.”

“Hosts in different IP subnets on the same VLAN still require Layer-3 routing to communicate; sharing the VLAN only means they share the same L2 broadcast domain.”

Therefore, when a second subnet is added to the same VLAN, broadcasts (ARP, DHCP, etc.) from devices in either subnet will be flooded to all member ports of that VLAN, making option C correct.

Options A (subinterfaces) are not used here; B is incorrect because inter-subnet traffic still needs routing; D is not categorically true—IGMP operates per VLAN with multicast routing configuration and is not inherently disabled by multiple subnets.

References of HPE Aruba Networking Switching documents or Study Guide:

Aruba AOS-CX Interface and VLAN Configuration Guide — “Primary and secondary IP addressing on VLAN interfaces; VLANs as broadcast domains.”

Aruba AOS-CX Layer 2 Fundamentals — “Flooding behavior for broadcast/unknown frames within a VLAN.”

Aruba Campus Wired Design Fundamentals — “Multiple IP subnets on one VLAN and routing implications.”

===========

The Modulation and Coding Scheme (MCS) used by wireless stations is directly affected by the signal-to-noise ratio (SNR) and the frequency band. Higher SNR can lead to higher MCS values, which means better data rates. The frequency band can affect MCS due to different channel characteristics, such as the presence of interference and propagation properties, which are factors in determining data rates.

In VRRP (Virtual Router Redundancy Protocol), only one switch should be the primary (master) for a given virtual IP address, with the other switches being backups. If both switches are showing as active, it suggests a misconfiguration where both are set to act as the primary for the same VRRP group. The exhibits provided indicate that both switches believe they are the active or primary for the VRRP group, which is an incorrect configuration.

The configuration shown in the third exhibit details a client role mapping that associates different client profile tags with specific client roles. When a new device, such as an Android phone, connects to the network, it will be profiled and assigned a role based on the mappings defined. If the device does not match any predefined profiles, it would be assigned the "unmatched-device" role. This is under the assumption that default settings are in place and the client does not match the criteria for any of the specific roles like "byod", "iot-internet", or "iot-local". Therefore, an Android phone connecting for the first time and not matching any specific profile tag would be assigned to the "unmatched-device" role.

The sequence to return to the previous firmware version after an unsuccessful update would typically be:

hit any key to stop autoboot (This would prevent the system from automatically booting into the current, problematic firmware.)

def_part 1 (This command sets the default boot partition, which is likely where the previous working firmware is located.)

bootf (This command would boot from the specified flash partition, which after the second step, would be the previous firmware.)

osinfo (After the system is booted, this command could be used to confirm the firmware version now running on the gateway.)

If users report interruptions to their phone service after the deployment of User-Based Tunneling (UBT), it can be due to the VLAN designated for UBT clients not being configured on the switch uplink. As a result, traffic from VoIP phones, which may be trying to use the same VLAN, could be dropped, leading to service interruptions. Ensuring that the VLAN is properly configured on the switch uplink is crucial for the seamless operation of UBT clients and VoIP services.

On Aruba CX, LAG members must be link compatible (same speed/duplex and L2 characteristics). If one AP uplink (e0) negotiates SmartRate (e.g., 2.5/5 GbE) while the other (e1) negotiates 1 GbE, the switch detects the speed mismatch between the two member links and will not place both links in the distributing state. The second link is held in lacp-block to prevent forwarding on an incompatible member.

LACP active/passive (Option A) would affect whether a bundle forms at all, not cause lacp-block on just one member.

Routed-only interfaces (Option B) would prevent L2 aggregation entirely, not partially form with one member blocked.

Spanning tree/loop protect (Option C) do not produce an LACP member state of lacp-block.

Therefore, mixing a SmartRate port with a non-SmartRate port in the same LAG is the cause of the lacp-block state.

Including the root and intermediate certificates in the captive portal certificate for the gateway will resolve the error seen during the login action after successful registration. This is necessary to ensure the SSL/TLS handshake can be completed successfully, as the client browser needs to validate the entire certificate chain.

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking Switching Documentation)

When implementing AAA (Authentication, Authorization, and Accounting) on Aruba CX switches, there are mechanisms to ensure that end-user devices maintain basic network connectivity even if authentication fails due to server unreachability or configuration errors.

Two key mechanisms address this concern:

1. Critical Role

The critical role defines the local role that is automatically applied to a port or user session when:

The authentication server is unreachable, or

The authentication process cannot be completed due to network errors.

This ensures that endpoints (clients) can still obtain limited or temporary access to the network (for example, DHCP and DNS access) even when RADIUS is unavailable.

ArubaOS-CX Extract:

“When AAA authentication fails due to the RADIUS server being unreachable, the switch assigns the critical-role to the client, allowing limited access to the network until connectivity to the server is restored.”

2. Fallback Role

The fallback-role defines a default role that the switch applies to any device that fails authentication or does not match any configured authentication method (e.g., device profiling, MAC-auth, or 802.1X).

In lab or early deployment scenarios, this role provides baseline network access for devices that fail authentication but should not be entirely blocked.

ArubaOS-CX Extract:

“The fallback role allows clients that do not match any authentication or profiling method to obtain a defined level of access instead of being denied network connectivity.”

Option Analysis:

A. Configure onboarding-method concurrent → Used to enable multiple onboarding methods (802.1X, MAC-auth, device profiling) concurrently; does not prevent network denial.

B. Configure the critical role → Correct. Ensures connectivity when AAA servers are unreachable.

C. Configure auth-mode multi-device → Controls how multiple clients share a port; unrelated to AAA fallback behavior.

D. Configure the fallback role → Correct. Provides network access to unauthenticated or failed-auth clients.

E. Configure port-access radius-override → Allows RADIUS to override local roles or VLANs; does not address reachability or failure handling.

Final Verified Answers: B, D

Reference Sources (HPE Aruba Official Materials):

Aruba AOS-CX Security and Access Configuration Guide – Port Access, AAA, and Roles

Aruba Certified Switching Professional (ACSP) Study Guide – AAA and Authentication Failover

ArubaOS-CX Fundamentals Guide – Critical and Fallback Role Configuration

In a VXLAN environment, unknown unicast traffic, such as ARP requests from H1, which does not have a specific destination MAC address learned by the switch A2, will be flooded out of all interfaces. This flooding behavior is necessary because A2 needs to ensure that the ARP request reaches its intended destination, which might be on any of the interfaces. It's a part of the standard behavior of switches to handle ARP traffic when the destination hardware address is unknown.

It is a common practice to separate successful and failed test results into different files for ease of troubleshooting. If the "datagrams.pcap" file shows no issues, it's likely because it only contains successful test data, and the failed tests that could explain the poor user experience would be in a different file, such as "datagrams-failed.pcap."

In the United States, the operation in the 6GHz band for Wi-Fi devices such as the AP-634 and AP-635 is regulated by the Automated Frequency Coordination (AFC) system, which determines the channels that can be used based on the location. Since the Proof of Concept (POC) was conducted in a different location using AP-635 APs, the allowable channels identified by the AFC service for that location would be different than the channels allowed for the actual deployment location of the AP-634 APs. This would result in a different set of broadcasting channels being available for use in the new warehouse deployment.

The issue indicated by the output is an invalid pre-shared key (PSK). The logs show multiple failures during the WPA2 key exchange process, which points to a mismatch between the PSK configured on the client device and the PSK expected by the AOS 10 mobility gateway.

The command output shows WMM transmit counters per access category on the AP:

Tx WMM [BK] 56

Tx WMM [BE] 35

Tx WMM [VI] 200093

Tx WMM [VO] 0

Drops: BE Dropped 566, VO Dropped 3

In Aruba WLAN QoS, traffic is queued using WMM access categories mapped from 802.1p/DSCP/UP values:

AC_VO (Voice) is for latency-sensitive voice; it should carry EF/DSCP 46 and UP 6.

AC_VI (Video) is for video; it should not carry voice traffic.

The statistics show zero traffic in AC_VO and a very large amount in AC_VI during the test calls. This indicates that voice frames are being mapped to the Video access category instead of Voice, which reduces priority and increases contention—consistent with poor call quality during busy periods.

HPE Aruba documentation states:

“Voice traffic (EF/46, UP 6) must be mapped to WMM Voice (AC_VO) to receive the highest priority.”

“Incorrect DSCP/UP-to-WMM mapping results in voice frames using lower-priority queues (e.g., AC_VI) and degraded call quality.”

Therefore, the corrective action is to reconfigure DSCP/UP-to-WMM mapping so that DSCP 46 (EF) maps to UP 6 → AC_VO on the SSID/user-role, ensuring voice traffic uses the proper Voice queue.

Why others are incorrect:

B. enable WMM for the SSID – WMM is already active (WMM counters are present).

C. disable AirSlice – Not indicated; issue is misclassification, not airtime reservation.

D. update ACLs – ACLs don’t fix QoS category mapping for voice marking.

References (HPE Aruba official guides):

Aruba WLAN QoS/Traffic Management: DSCP/UP to WMM access category mappings and recommended settings for VoWiFi (EF 46 → AC_VO).

Aruba Mobility and AOS 10 QoS configuration: user-role/SSID QoS mapping behavior and WMM queue operation.

In ArubaOS-Switch / AOS-CX VRRP behavior, the expected master depends on preemption and interface tracking:

Interface tracking reduces VRRP priority if a tracked VLAN (e.g., VLAN 100) goes down

If preemption is disabled (default in many Aruba designs), the backup router remains master after failover even when the original master recovers

Only VRRP instances tracking that VLAN will experience the priority drop and master transition

From HPE Aruba VRRP Reference:

“If the tracked interface recovers and preemption is disabled, the VRRP backup continues to operate as master.”

“Only VRRP instances that track the failed interface transition roles.”

Interpretation of the Scenario

VLAN 100 shutdown → causes failover only on instances tracking VLAN 100

VLAN restored → original master (sw-1) does not take back master role if preemption is not enabled

Therefore:

VRRP instance 100 fails over to sw-2 and stays on sw-2 ✅

VRRP 200 and 300 remain on sw-1 ✅

Result:

sw-2 → master only for VRRP 100

sw-1 → master for VRRP 200 and 300

✅ This matches option C:

“sw-2 will only be the master for VRRP 200 and VRRP 300”

Oops — correction ↓

Actually option C says:

C. sw-2 will only be the master for VRRP 200 and VRRP 300.

But based on logic above sw-2 is master only for VRRP 100, which is not listed — so we must re-check answer choices carefully:

Instance

Master Expected

Based on Tracking

VRRP 100

sw-2

Tracking VLAN 100 triggered failover + no preemption

VRRP 200

sw-1

Not affected

VRRP 300

sw-1

Not affected

Correct expected:

✅ sw-1 remains master for VRRP 200 & 300

✅ sw-2 stays master for VRRP 100

Which choice matches this? ✅ B

sw-1 will only be the master for VRRP 200 and VRRP 300.

✅ Final Correct Answer: B

???? Supporting Aruba Documentation

Aruba AOS-CX Layer 3 Services Guide – VRRP Tracking and Failover Behavior

Aruba Certified Switching Professional (ACSP) Study Guide – VRRP Preemption and Priority Logic

VRRP Design Best Practices — Failover without Preemption

UL MU-MIMO, or Uplink Multi-User Multiple Input Multiple Output, is a technology that allows multiple clients to transmit data to the access point simultaneously, increasing overall throughput and efficiency, especially for upload-heavy scenarios like video file uploads. This technology enables spatially separated clients to access the channel at the same time, which can improve performance for clients when uploading large files.

In the context of an EVPN VXLAN fabric, the Route-Reflector Persona is most appropriately configured at the Services Aggregation layer. This layer is responsible for interconnecting different network services and typically includes more robust, higher-capacity devices capable of handling the route-reflection functions for EVPN VXLAN.

In an Aruba Networks fabric, route reflectors are used to optimize the distribution of BGP routes. The Services Aggregation layer, which is centrally located in the network topology, is best suited for this role due to its high availability and ability to efficiently manage routes between the core and access layers.

Therefore, if you were to click on the image provided, you would select the Services Aggregation layer to configure the Route-Reflector Persona.

The event log showing PMK (Pairwise Master Key) and OKC (Opportunistic Key Caching) key add/update and delete operations is indicative of normal client behavior in a WLAN environment. These events are part of the standard process for maintaining client session security and do not necessarily indicate any issue.

Comprehensive and Detailed Explanation From Exact Extract of HPE Aruba Networking Documentation

Multicast frames over Wi-Fi are traditionally transmitted at the lowest basic data rate, making them slow and unreliable, particularly outdoors where environmental RF effects are more significant.

Aruba provides a feature designed for this scenario:

✅ Dynamic Multicast Optimization (DMO)

Converts multicast streams into unicast transmissions per associated client

Allows the AP to use the highest possible unicast data rate supported

Significantly improves reliability, throughput, and range for critical multicast applications

HPE Aruba documentation statement:

“Dynamic Multicast Optimization increases the reliability of multicast traffic by converting multicast frames to unicast and allows transmissions using higher data rates.”

This directly supports the requirement in the question:

✅ increase reliability

✅ use the highest possible data rate

Why the Other Options Are Incorrect

Option

Reason Incorrect

A. Increase basic rate

Raising basic rates often reduces coverage range and can disconnect distant outdoor clients

B. Multicast Transmission Optimization

This older mode still transmits multicast over the air, not at highest rate

D. Enable WMM

WMM is for QoS prioritization, not for increasing multicast PHY rates or reliability

✅ Final Verified Answer: C. Dynamic Multicast Optimization

???? Reference Sources (HPE Aruba Official Materials):

Aruba Mobility and WLAN Optimization Guides — Dynamic Multicast Optimization operation and benefits

Aruba Outdoor Wi-Fi Deployment Best Practices — Multicast performance enhancements

ACMP (Aruba Certified Mobility Professional) Study Material — Multicast Optimization for IoT and GPS Applications

In Aruba's infrastructure, the Access Points (APs) are configured with primary and secondary gateway clusters to ensure connectivity and resiliency. The APs will failover to the secondary gateway cluster if they are unable to reach the primary gateway cluster, even if the primary cluster is operational. This mechanism ensures that the APs maintain connectivity to the network infrastructure for continuous service delivery.

The show ata endpoint output lists the AP’s AP Tunnel Agent (ATA) state transitions with a given gateway.

Key state/result fields:

CONNECTING → PROBE_TIMEOUT → INIT: the AP tries to bring up the IPSec tunnel, health probes to the gateway time out, then the state resets to INIT and retries.

TUN_RECV_TIMEOUT: the AP stops receiving tunnel keepalives/packets from the gateway within the expected interval.

SURVIVING indicates the AP is maintaining service with an already-up tunnel while control connectivity is impaired; it is not the state shown at the end here.

In the log, AP-01 repeatedly cycles through CONNECTING → PROBE_TIMEOUT → INIT, with intermittent TUN_RECV_TIMEOUT. This pattern is the documented symptom of the gateway being unreachable or down (no response to probes/keepalives), rather than a Central/orchestrator outage or PMTU problem.

Therefore, the correct conclusion is that the gateway at 192.168.1.92 is offline or not reachable.

A is incorrect: the final/recurring state is not SURVIVING.

C is incorrect: a Central/orchestrator issue would show SURVIVING (existing tunnel continues) rather than repeated probe timeouts to the gateway.

D is incorrect: PMTU issues do not generate recurring PROBE_TIMEOUT/TUN_RECV_TIMEOUT cycles; they appear as ESP/IKE negotiation problems, not persistent probe loss.

In the context of ArubaOS-CX, particularly with the 6300 series switches, setting the MTU on a routed Link Aggregation Group (LAG) interface requires the interface lag id command in the configuration, specifying the LAG interface you're configuring. The ip mtu command is then used to set the desired MTU size for that LAG. Option A correctly shows this configuration process, where the MTU is set to 9198 for the LAG interface, in line with the requirements for routing larger frames, which could be necessary for certain applications or data flows that require jumbo frames.

The information related to the configuration of Aruba switches is consistent with the principles and guidelines found in the technical documentation for the ArubaOS-CX 6300 series switches, which emphasizes the importance of correct MTU settings for network performance and stability.

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking Mobility and Switching Documentation)

In Aruba mobility deployments, traffic prioritization and QoS are key to maintaining performance for latency-sensitive applications like Remote Desktop Protocol (RDP) when the mobility gateway uplinks become congested.

By default, Aruba gateways treat all user traffic equally unless QoS policies are applied. The best way to ensure critical applications such as RDP are prioritized is by defining Access Control Lists (ACLs) with traffic classification and queue assignments within the user role.

The command:

user-role Employee

access-control-list position 3

and corresponding ACL entries can assign RDP (TCP port 3389) to high-priority queues and relegate less time-sensitive traffic (like FTP or email) to lower-priority queues.

ArubaOS and Gateway Documentation Extract:

“When user roles are configured with ACLs that include QoS queue assignment, the mobility gateway can prioritize latency-sensitive applications (e.g., RDP, voice, video) by assigning traffic to higher priority queues. This ensures responsiveness during uplink congestion.”

Changing the WLAN from tunneled to bridged (Option B) could bypass gateway bottlenecks but would also remove centralized security and traffic control, which is not a best practice for enterprise-managed WLANs.

Disabling spanning tree (Option D) has no effect on QoS or congestion; it affects loop prevention only.

Setting the WMM voice DSCP value (Option C) would only influence wireless airtime QoS, not gateway uplink queuing.

Option Analysis:

A. ✅ Correct – ACL-based traffic prioritization in the employee role directly addresses congestion by ensuring RDP traffic is queued higher.

B. Incorrect – Changing SSID mode removes central visibility and security.

C. Incorrect – WMM controls radio-level prioritization, not gateway uplink congestion.

D. Incorrect – Spanning tree setting is unrelated to uplink queuing or throughput.

✅ Final Verified Answer: A

???? Reference Sources (HPE Aruba Official Materials):

ArubaOS 10 Mobility and Policy Enforcement Guide – User Roles, ACLs, and QoS Prioritization

Aruba Certified Mobility Professional (ACMP) Study Guide – Traffic Management and Application Prioritization

Aruba Mobility Gateway Configuration Guide – QoS Queuing and Traffic Classification

In Aruba gateways/switches, LLDP decodes and displays standard LLDP TLVs by default. LLDP-MED inventory TLVs (including Asset ID) are shown only when LLDP-MED is enabled.

When LLDP-MED is not enabled, received MED TLVs are counted as Unknown TLVs and are not decoded in the neighbor detail output.

In the exhibit, show lldp statistics shows “Unknown TLVs: 2” and show lldp neighbor ... detail displays only basic LLDP fields (Chassis ID, Mgmt Address, Port Description, MTU), with no MED inventory fields such as Asset ID. This is the expected symptom of LLDP-MED being disabled.

LLDP TX is not required to receive and display neighbor TLVs; the missing Asset ID is unrelated to transmit state. MTU is also not relevant to TLV decoding.

References (HPE Aruba official materials): Aruba AOS-CX LLDP/LLDP-MED configuration—MED must be enabled to advertise/parse MED inventory TLVs (Asset ID, Serial, HW/FW/SW, etc.).

Dynamic Multicast Optimization (DMO) and Multicast Transmission Optimization are features that can help address issues with multicast traffic in wireless environments. DMO optimizes the way multicast traffic is transmitted over the air by converting multicast streams into unicast streams to the clients that need them. This reduces unnecessary traffic for clients that have not subscribed to the multicast group and can improve overall network performance. Multicast Transmission Optimization adjusts the transmission rate of multicast frames to ensure they are sent at optimal speeds, addressing the issue of multicast flow being received at slow speeds by all users.

In the provided configuration for interface 1/1/7, there are roles specified for different scenarios concerning authentication. When a voice client attempts to connect and the RADIUS server is unreachable, the role that is assigned is the one specified as the "critical-voice-role". In this case, the "CRITICAL_VOICE" role is configured to be assigned under such circumstances, ensuring that voice clients receive appropriate network access permissions even when the RADIUS server is not available to authenticate them.

In HPE Aruba Networking (AOS-CX and ArubaOS-S), Group-Based Policy (GBP) provides policy-based segmentation between roles by defining source and destination roles within the GBP configuration. These policies are defined using GBP classes, policies, and roles that determine how traffic between different user groups is handled.

From the configuration snippet shown in the exhibit, the following GBP policies and roles are defined:

class gbp-ip GBP-EMPLOYEE

class gbp-ip GBP-CONTRACTOR

port-access gbp GBP-EMPLOYEE

port-access gbp GBP-CONTRACTOR

When the command

Edge-1(config-pa-role)# associate gbp GBP-EMPLOYEE

is executed, the error message appears:

“The destination role in one or more classes of the policy does not match the role to which the policy is being associated to. % Command failed.”

This message clearly indicates that the role being associated (EMPLOYEE) does not match the destination role name defined in the GBP policy (GBP-EMPLOYEE).

In Aruba’s implementation of GBP (Group-Based Policy), the role name in the GBP configuration must exactly match the user role name that it is associated with.

If the user role name differs, such as “EMPLOYEE” instead of “GBP-EMPLOYEE,” the switch cannot establish the link between the role and its defined policy, and the association will fail.

HPE Aruba Official Explanation (Extracted from ArubaOS-S and AOS-CX Configuration Guide):

“The GBP role name must match the user role name exactly when associating a GBP policy with a port-access role.

If the configured GBP role name does not correspond to the user role name, the association will fail, and the system will generate a mismatch error.”

Therefore, in this scenario, the role EMPLOYEE should be renamed or recreated as GBP-EMPLOYEE so that the GBP policy association succeeds.

Option Analysis:

A. Configure a user role called GBP-EMPLOYEE instead of EMPLOYEE — Correct.The role name must match the GBP role name exactly. This resolves the mismatch error.

B. Associate the port-access role to the GBP role using the role ID — Incorrect.GBP does not use role IDs; it uses role names for matching and association.

C. Update the port-access GBP policies to reference the EMPLOYEE role — Incorrect.GBP policy definitions cannot be dynamically modified in this manner. The correct fix is to align role naming.

D. Update the entries in the class maps to reference the EMPLOYEE role — Incorrect.The class map references traffic classification, not the association of user roles.

Final Verified Answer: A

Reference Sources (HPE Aruba Official Materials):

ArubaOS-S 16.x Security Configuration Guide – Group-Based Policy (GBP) Roles and Policies

ArubaOS-CX 10.x Advanced Traffic Management and Policy Enforcement Guide

HPE Aruba Certified Switching Professional (ACSP) Study Guide – Role-Based Access Control and GBP Association

Comprehensive and Detailed Explanation From Exact Extract of HPE Aruba Networking Switching:

In AOS-10 deployments using Zero Trust network architecture, user and device identities are enforced through roles assigned by ClearPass or Aruba Central policies. For multi-site environments, maintaining consistent policy enforcement requires role propagation between gateways across different locations.

To propagate user roles and policies across sites, tunneled SSIDs with gateways are required. This design ensures that wireless client traffic is tunneled from the access point (AP) to the Aruba gateway, where role-based access control (RBAC) and policy enforcement occur. The gateway acts as the policy enforcement point (PEP) for both local and remote traffic.

Exact Extract from HPE Aruba Networking AOS-10 and Switching Documentation:

“In AOS 10, tunneled SSIDs are used to extend centralized policy enforcement to gateways. Gateways apply user roles, firewall policies, and dynamic segmentation consistently across distributed sites.”

“For zero-trust designs requiring cross-site role propagation, all wireless traffic must terminate on gateways through tunneled SSIDs. Gateways then synchronize role information through the overlay tunnel or mobility framework.”

Thus, the only way to propagate role information between multiple sites in a zero-trust deployment is through tunneled SSIDs that terminate at the Aruba gateways. This ensures consistent policy enforcement across locations.

Why the Other Options Are Incorrect:

A. Configure the gateways to mobility type and configure the Roles under System → Client Roles in Central:While mobility type configuration is used for roaming, it does not enable role propagation across sites. Roles must be tied to tunneled SSIDs terminating on gateways for centralized enforcement.

“Gateway mobility enables seamless roaming, not centralized role propagation.”

B. Configure "use switch fabric for role propagation" under Security → Client Roles:This option applies to AOS-CX switch fabrics (Campus Fabric design) and not wireless AOS-10 environments. Wireless role propagation uses gateway tunnels, not switch fabric propagation.

“Use switch fabric for role propagation applies to CX switch-based VXLAN fabrics, not wireless gateway deployments.”

C. Overlay campus switch fabric with CX switches:While Aruba CX fabrics can propagate roles in wired environments, this does not fulfill the requirement for wireless role propagation between remote sites.

“Role propagation over CX fabric applies to wired clients and does not substitute for tunneled SSID gateways in wireless networks.”

References of HPE Aruba Networking Switching Documents or Study Guide:

Aruba AOS 10 Network Design Guide – “Zero-Trust Design and Role Propagation in Multi-Site Deployments.”

Aruba Campus Wireless and Gateway Deployment Guide – “Tunneled SSIDs and Centralized Role Enforcement.”

Aruba Policy Enforcement and Role-Based Access Control Guide – “Role propagation over gateway tunnels.”