For multicast to function efficiently on Aruba CX access switches, IGMP snooping needs to be enabled on the VLAN interfaces. IGMP snooping listens to IGMP join and leave messages between multicast clients and routers to allow the switch to forward multicast traffic only to interested ports, reducing unnecessary multicast flooding.

PIM is a multicast routing protocol and usually configured on routing devices, not access switches.

IGMP (without snooping) enables hosts to signal interest but does not control traffic forwarding at the switch layer.

Enabling IGMP snooping on SVI alone may not be sufficient; it should be enabled on VLANs that carry multicast clients.

Hence, enabling IGMP snooping on VLAN is necessary for efficient multicast traffic flow.

The event message:

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2024-04-04T08:35:38.312254+00:00 ICX-Core-1 hpe-vaxd[2167]: Event[701|LOG_INFO|AMM1/1|VSX2 state local up, remote down]

indicates that the local VSX member is up, but the remote VSX member is down. In a VSX pair, both switches must be operational for full redundancy and synchronization.

This log means the secondary VSX switch (remote) is down or unreachable, causing loss of synchronization and possibly traffic failover issues.

Option B (keepalive detection) is related but the event specifically shows the state of the remote switch being down.

Options C and D refer to LAG or interface state, which are not what this log entry describes.

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.

The exhibit shows the output of the show vsf command on a two-member Virtual Switching Framework (VSF) stack. To determine the outcome of a failover, we must look at the assigned roles and the secondary member configuration.

Analyzing the Roles: * Member 1 is the Conductor (the master controller).

Member 2 is a Member (a subordinate switch).

The Secondary Member Requirement: In VSF, high availability is not automatic just by having two switches. You must explicitly designate a Secondary member to act as the " Standby " for the Conductor. In the exhibit, the line Secondary : is blank.

Failure Scenario: * If Member 1 (Conductor) fails, Member 2 will look to see if it is the designated Secondary.

Since no Secondary is configured, Member 2 has no authority to take over the control plane or management functions of the stack.

Member 2 will remain in the " Member " state. Because the Conductor is gone and there is no Standby to promote, the logical stack effectively collapses; Member 2 will likely reboot or lose its configuration context because it has no Conductor to sync with. It certainly will not become the Conductor.

Best Practice Correction: To fix this, an administrator should have run the command vsf secondary-member 2. This would have changed Member 2 ' s status from " Member " to " Standby " (or Secondary), allowing it to transition to " Conductor " if Member 1 failed.

Aruba Central Support Mode is a specialized state that allows an administrator or TAC engineer to bypass the typical " Central is the Source of Truth " write-lock on the local CLI.

The Workflow: Normally, if a switch is managed by Central, local configuration commands are blocked. By enabling aruba-central support-mode, the local CLI becomes writable.

Synchronization Logic: Once the changes are made and the support mode session is closed, the AOS-CX switch communicates the new configuration back to the Central platform. Central recognizes these changes and updates its internal database for that specific device.

Local Override: In Central ' s UI, these changes often appear as " Local Overrides. " This ensures that the next time Central performs a configuration audit or a sync, it doesn ' t view the local change as a " conflict " and overwrite it; instead, it incorporates it into the device-level record.

Key Exam Point: AOS-CX was designed specifically to handle this " bi-directional " sync during support sessions to ensure that troubleshooting done by TAC is not lost the moment the switch reconnects to the cloud.

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.

When VSX peers are being managed through HPE Aruba Networking Central, VSX configuration synchronization must be handled carefully , particularly when the configuration state of the two peers is not identical or one peer is incomplete. Therefore, VSX sync can have configuration synchronization issues , making option B correct.

HPE Aruba documents multiple VSX configuration-sync conditions, including CONFIGURATION_SYNC_CONFLICT and CONFIGURATION_SYNC_MISSING_REFERENCE . A conflict can occur when configuration on the primary is marked for synchronization but corresponding configuration on the secondary creates a synchronization conflict; a missing-reference condition occurs when synchronized configuration depends on an object or configuration element that is absent. Aruba Networks

Central documentation additionally warns against enabling or manipulating certain vsx-sync configurations through Central , because synchronization can modify the peer and potentially leave it in an unknown configuration state. In MultiEdit specifically, HPE states that vsx-sync commands in subcontexts should not be added, edited, or deleted. Aruba Networks

This does not mean MultiEdit itself is unavailable, eliminating A. Central also supports AOS-CX configuration through its UI, eliminating D. There is likewise no general requirement that VSX switches must run 10.13.x or later merely for Central management; Central Managed mode supports substantially earlier AOS-CX releases. Aruba Networks

Study Guide References: VSX Configuration Synchronization; vsx-sync; Central MultiEdit; Configuration Sync Conflicts; VSX Peer Management.

If the ISL between two VSX core switches is down and logs indicate that Core-2 has disabled its VSX LAG interfaces, it means Core-2 has disabled its VSX LAG interfaces, likely as a protective or failover mechanism.

Keepalive packets being dropped (Option B) may cause issues but logs specifically state interface disablement.

Both switches forwarding traffic (Option C) is unlikely if ISL is down.

Downstream switches inability to forward traffic (Option D) is a consequence, not the cause.

To find which changes were made on an HPE Aruba CX switch from the GUI, the correct command is:

show checkpoint diff — this compares the running configuration with stored saved-config revisions.

Using " saved-config revisions " as the comparison base allows the GUI to show what has changed since the last saved configuration.

Other options mix checkpoint and saved-config terminology incorrectly.

To make configuration changes using multi-edit in Aruba Central when encountering the shown condition, you must enable edit config mode using the gear icon. This unlocks the configuration for editing and allows you to make batch changes safely.

Selecting configuration status or device in multi-edit alone is not sufficient.

Overriding state is not a standard approach in Aruba Central for editing configs.