This plugin monitors Cisco switches via SNMP to detect interfaces in the "error disabled" state. It triggers a CRIT alert immediately when a port is shut down due to issues like BPDU Guard violations, Link Flapping, or Port Security breaches. Crucially, it translates the numeric error cause into readable text and maps the SNMP index to the actual interface name or description. This allows for rapid troubleshooting without needing to log into the device manually. The extension is compatible with Checkmk 2.3 and higher and requires no special rule configuration—simply install and discover.