network-interface-health

What it does: - Checks network ports on routers, switches, and Linux computers for problems like errors, dropped packets, and bad connections - Looks at error counters and trends over time to find the real cause - Compares both ends of a network link to spot cable, hardware, or settings problems - Helps decide if you need to replace equipment or just fix the configuration When to use it: - Your network has packet loss, slow speeds, or devices that keep disconnecting - A switch or router port shows error counts that are growing - You need to prove a problem is hardware before replacing equipment - You want to compare network health before and after making changes - Your monitoring system reports increasing errors on a port