Your customer’s CX switches are managed in HPE Aruba Networking Central. They have recently deployed new cabling to some desks and want to be notified of any physical cabling issues. Which alerts should you enable? (Choose two.)
In a network management environment like Aruba Central , alerts are used to provide proactive notification of infrastructure degradation. When dealing specifically with physical cabling issues (Layer 1), we look for symptoms of signal degradation or negotiation failures.
Switch Port Input Errors (Option A): This is the most direct indicator of a cabling problem. Physical issues—such as a bad crimp, a cable exceeded its maximum length, electromagnetic interference (EMI), or a damaged pin—typically manifest as CRC errors , runts , or giants . Monitoring for input errors allows Central to flag a port as unhealthy due to physical data corruption.
Switch Port Duplex Mode (Option E): While most modern devices use Auto-Negotiation, physical layer issues or faulty older hardware can lead to a Duplex Mismatch (e.g., one side is Half-Duplex, the other is Full-Duplex). This results in late collisions and extreme performance degradation. An alert for Duplex Mode changes or mismatches is a standard part of physical layer troubleshooting.
Why other options are incorrect:
Option B: Rx Rate monitors the volume of traffic. High or low traffic doesn ' t inherently mean the cable is bad; it just means the link is busy or idle.
Option C: Hardware failure refers to the internal components of the switch (ASICs, Fans, Power Supplies), not the external cabling.
Option D: Uplink Port Usage is a capacity planning metric (Layer 2/3) rather than a physical integrity metric.
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