What indicators can be used to assess the performance and stability of network infrastructure in Linux?

The performance and stability of network infrastructure in Linux can be assessed by the following indicators:

• Throughput — measured in bits or bytes per second, indicates how much data passes through the network.
• Latency — the time it takes for a packet to travel from source to destination, measured in milliseconds.
• Packet loss — the percentage of lost packets, affects connection quality.
• Jitter — variation in delay between consecutive packets, important for streaming applications.
• Error rate — the number of transmission errors, such as CRC errors.
• Resource utilization (CPU, memory, network interfaces) — affects stability.

For monitoring and assessment, the following utilities can be used:

• ping — to measure latency and packet loss.
• iperf — for bandwidth testing.
• netstat, ss — for analyzing network connections.
• iftop, nload — for real-time traffic monitoring.
• ethtool — for diagnosing network interface status.

Regular monitoring of these indicators helps identify bottlenecks and maintain network stability.