What should engineers use to monitor and troubleshoot intermittent packet drops in a wired layer 3 network device?

Using a packet sniffer or protocol analyzer is the most effective approach for monitoring and troubleshooting intermittent packet drops in a wired Layer 3 network device. These tools allow engineers to capture and analyze the packets traversing the network. By examining the packet flow, engineers can identify issues such as packet loss, latency, and protocol errors that might be contributing to the intermittent drops.

When experiencing packet drops, it is crucial to understand the state of the packets as they travel through the network. A packet sniffer can provide detailed insights into the characteristics of the packets, including the source and destination addresses, the protocols in use, and even the timing of each packet. This data helps engineers isolate the problem, whether it’s an issue with a specific device, a network misconfiguration, or external interference.

Other options, while useful in their own right, do not provide the same level of specificity and detail regarding packet-level issues. For instance, a router or firewall is essential for routing and securing traffic but does not inherently analyze packet flows. Network topology tools and bandwidth monitors can help provide a general overview of network performance and layout but do not focus on the granular details required to troubleshoot intermittent drops. Performance metrics and user feedback can give context to issues but lack the diagnostic capability