Free HP HPE7-A08 Practice Exam with Questions & Answers | Set: 2

The LACP fallback command in Aruba VSX configurations allows the system to continue forwarding traffic even if LACP negotiation fails or is not established. This is useful when provisioning a gateway or link that does not support LACP, ensuring that the port remains operational in a static manner.

It is not specifically for backward compatibility with LACP v1.

It does not relate to operation with a single partner interface.

It also is not about active/passive LACP modes per se.

Therefore, LACP fallback is configured to support provisioning a gateway without LACP.

The Local Priority (LP) applied to an incoming packet marked with DSCP 46 and CoS 7 depends on the configured QoS mapping.

DSCP 46 corresponds to Expedited Forwarding (EF), which is typically mapped to the highest priority.

CoS 7 also indicates high priority.

According to the QoS policy shown, the LP assigned is 1, indicating the highest priority level.

To monitor BGP neighbor state changes and automatically create a helpdesk ticket, the NAE (Network Analytics Engine) action to use is a REST API call. This allows integration with external ticketing or automation systems, enabling automated ticket creation when a monitored event occurs.

Executing shell commands, sending emails, or generating logs are limited to internal actions and do not integrate as seamlessly with helpdesk systems.

REST API calls allow custom integration and automation.

When line card LEDs do not light up, and the cards are newly installed, the best troubleshooting methodology is Divide and conquer by swapping the line cards. This method isolates the problem by testing hardware in different slots or known working units.

Spot the difference involves comparing configurations, which does not directly isolate hardware failure.

Follow the path is more suited for connectivity issues.

Replace configuration relates to software or config problems.

Hardware issues are best isolated by physically swapping components.

If both switches are configured with default spanning-tree priorities and both appear as primary root bridges, to have a single spanning tree domain, matching MST configuration (Multiple Spanning Tree) must be created on Core-2 to align with Core-1.

Setting priority to 1 on one switch can help but matching MST configurations is the recommended approach for multiple VLANs.

Creating MST instances on only one switch will not ensure consistency.

Matching MST configurations ensures consistent root bridge election and stable spanning tree.

Comprehensive Detailed Explanation:

VLAN 1 is often configured as the native VLAN on interfaces to support Zero Touch Provisioning (ZTP). During ZTP, devices communicate over VLAN 1 by default to download their configuration and updates.

LLDP and UBT are unrelated to native VLAN configuration for provisioning.

MSTP relates to spanning tree but does not dictate native VLAN usage.

Thus, VLAN 1 as native VLAN facilitates ZTP processes.

When adding a switch with an existing configuration into a group in Aruba Central, the group requires devices to have factory default configurations to allow Central to apply the group config correctly.

If the switch has an existing configuration, synchronization and auto-commit may fail because of configuration conflicts.

Option A: Pending authorization is unrelated to config synchronization.

Option C: Auto-commit can be disabled but does not block syncing existing config.

Option D: VSX support limitations are irrelevant here.

Therefore, the likely cause is that only switches with factory default config can be added to a group with existing config.

If interfaces 1/1/53 and 1/1/54 connected to the primary VSX switch are disconnected and Client A experiences disruptions, configuring VSX shutdown on-split on SW-A (the primary) is necessary to prevent traffic forwarding during a split-brain scenario. This feature ensures that in case of link failure, the switch does not continue forwarding traffic independently, avoiding network loops or inconsistent states.

Configuring keepalive VLANs on downstream or upstream lags helps in monitoring but does not prevent traffic disruption.

VSX shutdown on-split must be configured on the affected primary switch to protect network integrity.

When establishing eBGP peering between devices that are not directly connected, the TTL (Time To Live) value of the BGP packets must be increased to allow them to traverse multiple hops. This is achieved by configuring ebgp-multihop, which increases the TTL beyond the default value of 1.

next-hop-self changes the BGP next-hop attribute but is not required for multihop eBGP.

route-reflector is a BGP design feature unrelated to multihop.

address-family ipv4 external is not a standard command on Aruba CX switches.

Therefore, to successfully peer eBGP sessions across multiple hops, ebgp-multihop must be configured.

To capture packets on an HPE Aruba CX switch and view the output remotely in real-time, the best practice is to use a mirror session that forwards traffic to a remote device running a packet analyzer such as Wireshark. ERSPAN (Encapsulated Remote Switched Port Analyzer) allows the mirror traffic to be encapsulated in GRE and sent over an IP network to a remote monitoring station. This method ensures full packet capture with no local resource constraints and provides full visibility to the analyst.

Option B (using tcpdump on the switch) only provides summarized or limited capture locally.

Option C (mirroring to another switch port) only allows local monitoring and does not provide remote real-time viewing.

Option D (mirror to CPU and then use tshark) is less efficient and may be resource-intensive on the switch.

Therefore, configuring ERSPAN to a remote Wireshark host is the recommended and best way.