HP HPE Aruba Networking Certified Professional – Switching HPE7-A08 Exam Dumps: Updated Questions & Answers (October 2025)

To prevent rogue DHCP servers in a VLAN, DHCP snooping authorized-server commands are used to specify trusted DHCP servers allowed to respond.

Option A (dhcpv4-snooping trust 10.100.100.10) configures a trusted port, but it is not VLAN specific and not precise enough for this purpose.

Enabling DHCP snooping globally and on VLAN or interface (Options C and D) are prerequisites but do not prevent rogue servers unless authorized servers are defined.

Option B correctly enables an authorized DHCP server IP on VLAN 30, blocking unauthorized DHCP responses.

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.

During a VSX firmware upgrade, the vsx-syned process stops synchronization while the switches have mismatched software versions. Synchronization resumes once both switches run the same software.

VSX synchronization cannot continue while versions mismatch (contrary to options B and D).

Compatibility mode is not required before rebooting secondary switch (Option D incorrect).

This behavior ensures consistency and avoids split-brain during upgrades.

The LACP state event Actor state: ALFNCD, Partner state: ASFNCD indicates that the LACP negotiation between the local (actor) and peer (partner) is successful with all flags matching and no errors.

ALFNCD and ASFNCD are standard LACP states indicating Active, Long timeout, Aggregation capable, Not synchronized, Collecting, and Distributing flags set as expected.

Also, the log shows the LACP rate is set to slow, which is the default.

Thus, the output shows the LAG 253 has a matching LACP configuration with its peer.

Comprehensive Detailed Explanation:

When troubleshooting intermittent connectivity issues with known source and destination IPs, the Follow the path methodology is most suitable. This involves tracing the packet flow from source to destination step-by-step, checking each device or segment for failures.

Spot the difference compares configurations, which is less targeted here.

Divide and conquer isolates sections but follow the path is more direct for connectivity.

Top-down/bottom-up is more general troubleshooting.

Colorless ports allow network devices to move or replace endpoints without changing port-level configurations, typically by automatically assigning network policies dynamically to any port.

HPE Aruba’s solution for colorless ports is the VNBT (Virtual Network Boundary Tagging) feature. VNBT allows dynamic segmentation of traffic, so ports can automatically take on the policies assigned to devices regardless of physical port location.

VRRP is a first-hop redundancy protocol and unrelated to port colorlessness.

VSF (Virtual Switching Framework) is for switch stacking.

VRF (Virtual Routing and Forwarding) is for traffic segmentation.

Thus, VNBT is the correct feature to meet colorless port requirements.

To upgrade an HPE Aruba Networking CX 8320 VSX cluster with minimal downtime from a remote server, the correct command is:

vsx update-software scp://172.25.101.10/image vrf mgmt

Using SCP (Secure Copy Protocol) ensures secure transfer.

Specifying vrf mgmt ensures the update uses the management VRF for connectivity.

Using TFTP is less secure and not recommended for production upgrades.

The primary keyword is not valid for the vsx update-software command.

This method allows an in-service software upgrade (ISSU) with least disruption.

To keep the BGP routing table size manageable and below a specified threshold, the customer should consider enforcing routing policies with aggregation. Route aggregation reduces the number of individual routes advertised and stored by combining multiple routes into a summarized one.

Setting route metrics equal or advertising only a primary path does not reduce the number of routes as effectively.

Importing only the default route (0.0.0.0/0) is impractical for normal operations.

Thus, route aggregation is the best practice for controlling routing table size in merged BGP environments.

When a VSX primary switch is powered off, it loses connectivity with management systems such as HPE Aruba Central. This causes the management system to trigger a "Switch Disconnected" alert because the switch is no longer reachable.

"Switch Reboot" alerts would indicate a restart, not power off.

"Switch Stack Conductor Change" refers to stack leadership changes, not VSX primary down.

"Switch STP Root Change" relates to Spanning Tree Protocol root bridge changes.

Hence, powering off the VSX primary causes a "Switch Disconnected" alert.

When deploying HPE Aruba VSX switches parallel to existing HPE Comware switches, choosing a first-hop redundancy protocol compatible with both platforms is essential. VRRP (Virtual Router Redundancy Protocol) is widely supported across multiple vendors and is suitable for multi-vendor environments.

HSRP is Cisco proprietary and not supported on Aruba Comware or CX.

Active Forwarding and Active Gateway are Aruba VSX internal mechanisms, not standard first-hop redundancy protocols.

VRRP provides seamless failover and is supported in Comware and Aruba CX platforms.

Thus, VRRP is the suitable choice.