HP HPE7-A07 Exam With Confidence Using Practice Dumps

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.”

In a packet capture from an upstream switch port mirror, you would see the VLAN assignment. The port mirror captures the traffic as it is on the network, including any VLAN tags. GRE or IPsec tunnels encapsulate the original packet, including VLAN tags, but the VLAN information is not visible within the encapsulation headers.

In Aruba AOS-CX, OSPF neighbors that reach EXSTART/EXCHANGE but fail to advance typically indicate a database description (DD) negotiation issue, most commonly caused by an MTU mismatch on the link. The OSPF header carries the interface MTU; if the values do not match, the peer rejects DD packets and the adjacency remains stuck at EXSTART (often shown as EXSTART/DR or EXSTART/BDR).

Aruba’s OSPF guidance states:

“If neighbors remain in EXSTART/EXCHANGE, verify that the Layer-3 MTU matches on both ends of the adjacency. An MTU mismatch causes DD packets to be rejected and prevents the adjacency from reaching FULL.”

Recommended corrective action is to align or remove custom L3 MTU settings on the participating interfaces (or use the mtu-ignore feature where appropriate).

In this scenario, removing the custom Layer-3 MTU configuration so both sides use the same default MTU allows DD packet negotiation to succeed and the adjacency to progress to FULL.