HP HPE7-A07 Dumps Questions Answers

The capture shows messages related to WPA key management, indicating WPA2-PSK is being used. Also, the capture includes a DHCP request from the client but no corresponding DHCP ACK, suggesting the client is not receiving an IP address, which could explain the connectivity failure.

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

In Aruba AOS-CX switching environments, Quality of Service (QoS) allows the switch to prioritize certain types of traffic such as voice, video, or real-time applications.

When a connected endpoint (such as a VoIP phone or wireless handset) marks packets with DSCP = 46 (Expedited Forwarding for voice), the switch must trust these markings to maintain end-to-end traffic prioritization.

Key Concept: Trust Boundary

By default, Aruba switches do not trust incoming DSCP or 802.1p markings from end devices for security reasons.

To allow the switch to accept and act on these values, the QoS trust DSCP feature must be explicitly enabled on the relevant interface or globally.

Official Aruba AOS-CX Extract:

“The qos trust dscp command enables the switch port to honor the Differentiated Services Code Point (DSCP) markings received from connected devices. When trusted, packets maintain their QoS priority as they traverse the switch fabric.”

When wireless handsets connect to a bridged SSID, their traffic is bridged locally at the access switch — meaning the switch sees the traffic directly from the AP. If the handset marks the packet with DSCP 46, enabling QoS trust DSCP ensures that the switch preserves that marking and applies the appropriate voice priority queue treatment.

This configuration ensures end-to-end QoS consistency between the wireless AP, mobility gateway, and wired switch.

Option Analysis:

A. Incorrect – “Voice Wi-Fi Multimedia Share” is not a valid Aruba configuration feature; WMM shares QoS mapping but not DSCP trust.

B. Incorrect – UCC (Unified Communications and Collaboration) enhances call visibility and diagnostics, not DSCP trust or QoS marking.

C. ✅ Correct – Enables the switch to trust and honor DSCP markings (such as DSCP 46) received from endpoints or bridged SSIDs.

D. Incorrect – WMM (Wi-Fi Multimedia) is required for prioritization over wireless links, but since this is a bridged SSID, the DSCP markings must be honored at the switch, not just the AP.

✅ Final Verified Answer: C

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

Aruba AOS-CX Quality of Service (QoS) Configuration Guide

ArubaOS 10 WLAN and Mobility Configuration Guide – QoS and WMM for Voice SSIDs

Aruba Certified Switching Professional (ACSP) Study Guide – QoS Trust and Traffic Classification

Comprehensive and Detailed Explanation (Verified Extract from HPE Aruba Networking AOS-10 Gateway Documentation)

The Change of Authorization (CoA) message is a RADIUS-based control packet typically sent by ClearPass Policy Manager or another RADIUS server to modify client authorization dynamically after authentication.

In ArubaOS 10, CoA and Disconnect-Request (DM) messages use UDP port 3799 and are received on the control path of the gateway, not the datapath.

HPE Aruba AOS-10 documentation specifies:

“Use the command packet-capture controlpath udp 3799 on the gateway to verify that CoA packets are being received and processed on the control plane.”

“The controlpath capture displays inbound CoA or DM messages received from RADIUS servers such as ClearPass.”

Command breakdown:

packet-capture controlpath udp 3799

controlpath → Captures control-plane traffic (used for management protocols like RADIUS, CoA, CAPWAP, etc.)

udp 3799 → Filters only CoA/DM packets

Why Others Are Incorrect:

A. interprocess captures internal gateway processes, not RADIUS packets.

C. diag utilities tcpdump is used in AOS 8.x, not AOS 10.

D. tcpdump host-port 3576 uses the wrong port; CoA uses UDP 3799, not 3576 (which is for standard RADIUS authentication).

✅ Final Verified Answer: B. packet-capture controlpath udp 3799

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

Aruba AOS-10 Gateway Troubleshooting Guide – Control Path Packet Capture Commands

Aruba ClearPass and AOS Integration Guide – RADIUS CoA Port (UDP 3799)

Aruba Certified Mobility Professional (ACMP) Study Guide – CoA and Disconnect Message Verification