HPE7-A07 Exam Dumps - HP Aruba Certified Professional - Campus Access Questions and Answers

The CLI output shown is from the Aruba CX 6300 running AOS-CX, displaying the routing table in an EVPN-VXLAN fabric environment.

Key details from the output:

Prefix Nexthop Interface Origin/Type Distance/Metric

10.203.1.0/24 - vlan203 C [0/0]

10.203.1.1/32 - vlan203 L [0/0]

10.203.1.100/32 172.21.11.2 - B/EV [200/0]

172.21.11.4/32 172.21.11.2 - B/EV [200/0]

172.21.11.5/32 - loopback3 L [0/0]

From this, we can interpret the following:

Routes marked as B/EV originate from BGP EVPN, meaning they are advertised and learned over the VXLAN fabric.

The next hop 172.21.11.2 indicates that these routes are learned from another fabric device with loopback address 172.21.11.2.

The route 10.203.1.100/32 is a host route (specific endpoint) reachable via that remote switch.

According to the Aruba CX EVPN-VXLAN Fabric Deployment Guide:

“In a VXLAN fabric, host routes (/32) are dynamically advertised using EVPN Type 2 routes.

These routes include MAC/IP bindings of endpoints connected to remote VTEPs (loopbacks).

The next-hop address in the routing table corresponds to the VTEP IP (loopback address) of the remote switch where the client resides.”

Thus, the presence of a /32 route (10.203.1.100/32) with next hop 172.21.11.2 indicates that this wired client resides behind another CX 6300 fabric node whose VTEP address is 172.21.11.2.

Option Analysis:

A. Correct – The /32 route confirms that 10.203.1.100 is reachable via remote CX at 172.21.11.2 (remote VTEP).

B. Incorrect – The RD information isn’t shown here; this statement cannot be validated and contradicts visible EVPN entries.

C. Incorrect – The route is properly advertised and reachable via EVPN; no indication of advertisement failure.

D. Incorrect – Overlay loopbacks (172.21.11.x) are advertised as /32 host routes, not /24 subnets.

Final Verified Answer: A

Reference Sources (HPE Aruba Official Materials):

Aruba AOS-CX EVPN-VXLAN Fabric Deployment and Configuration Guide

Aruba CX 6300 Routing and BGP Configuration Guide

Aruba Certified Switching Professional (ACSP) Study Guide – EVPN-VXLAN Route Interpretation

In the design shown:

The BGP peering between agg-sw1 and agg-sw2 is being established using loopback interfaces as the BGP neighbor addresses (10.0.0.2 and 10.0.0.4)

When BGP peering uses loopbacks, you must configure the BGP session to originate updates from the same loopback interface that the neighbor’s address resolves to

Otherwise, the TCP session fails because:

The source IP does not match the configured neighbor remote-IP which is based on the loopback address

Aruba AOS-CX requirement:

“When configuring eBGP or iBGP neighbors using loopback interfaces, apply update-source under the IPv4 unicast address family so BGP uses the correct source interface for peering.”

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.

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

Multi-Pre-Shared Key (MPSK) with ClearPass is the recommended solution for a scenario where the IT Helpdesk needs to configure IoT devices to connect to a single SSID using unique PSKs. MPSK allows for the use of different PSKs on the same SSID, and ClearPass enables the management of these unique keys efficiently.

In 802.11ax (Wi-Fi 6), OFDMA (Orthogonal Frequency Division Multiple Access) subdivides a channel into resource units, enabling simultaneous uplink and downlink transmissions for multiple clients. This is specifically optimized for many small packets (typical of IoT), reducing contention and improving efficiency. MU-MIMO (UL/DL) helps with multiple spatial streams for larger frames and strong SNR clients, while HE TXBF improves range/data rate for individual links; neither addresses small-packet concurrency as directly as OFDMA.

VoIP quality can be negatively impacted by insufficient cell overlap in AP deployment plans, which can cause poor handoffs between APs as a user moves around. This results in a degraded VoIP experience. Additionally, roaming into an area with continuous Zigbee operation can cause interference with the 5GHz frequency band, further contributing to poor VoIP call quality. The Zigbee communication protocol operates on the same frequency band as Wi-Fi and can introduce noise and interference, which leads to a reduced MOS score, as reported by the VoIP engineer.

Why C and D are correct (bridged traffic):

“In AOS 10 deployments that use mobility gateways, application/flow visibility and Client Insights for wireless clients are derived from gateway DPI and firewall session state. When an SSID is bridged at the AP (including mixed mode where a client is bridged), client data traffic does not traverse the gateway. Because the gateway does not see the user flows, flow attributes and network activity are not populated in Central for those clients.”

This applies to:

• C – SSID is bridged (all clients bypass the gateway).

• D – SSID is mixed mode but the affected clients are bridged (those clients bypass the gateway).

Why A, B, and E are not the best answers:

“When clients are tunneled (including mixed-mode clients that are tunneled) to the gateway, the gateway’s stateful firewall and DPI engine observe the sessions and export flow/app data to Central.”

Thus A is not a reason for missing data.

“Client VLANs marked untrusted are evaluated by the gateway firewall/DPI and support visibility. Marking a VLAN trusted bypasses firewall enforcement, but flow visibility for tunneled WLAN clients is based on gateway DPI; the primary reason Central shows no flow attributes is that the traffic never reached the gateway (bridged path).”

Therefore B/E are not the primary causes of this symptom in the scenario described.

References of HPE Aruba Networking Switching documents or Study Guide:

Aruba AOS 10 Gateway and WLAN Configuration Guides — “Tunneled vs Bridged SSIDs and impact on gateway DPI/visibility.”

Aruba Central Operations Guide — “Client Insights data sources from mobility gateways.”

Aruba Policy Enforcement and Application Visibility — “Gateway DPI and stateful firewall as the source for app/flow telemetry for wireless clients.”

default GBP role = GBP role ID = 0

infrastructure GBP role = GBP role ID = 2

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

Based on the criteria provided for wireless guest users, the correct user role configuration must allow internet access, only allow access to public DNS servers, deny access to all internal networks except for any DHCP server, and place the Wi-Fi guests on VLAN 555. The ACLs must permit services necessary for basic internet access (such as DNS and DHCP) and block access to internal networks.

Option A satisfies these criteria with the following configurations:

user-role "WiFi-guest": This defines the role for Wi-Fi guests.

access-list session dhcp-acl: This applies the access list that likely permits DHCP, which is necessary for guests to obtain an IP address.

access-list session dns-acl: This applies the DNS access list, which likely restricts guests to using public DNS servers.

access-list session internal-networks: This applies the internal networks access list, which denies access to internal networks.

vlan 555: This sets the VLAN for Wi-Fi guests to 555.

Options B, C, and D are incorrect because they include access-list session allowall which would permit all traffic, contradicting the requirement to deny access to all internal networks.