Most engineers use Prometheus with the SNMP Exporter or Telegraf . These tools "poll" your Cisco hardware using SNMP OIDs.
Prometheus or InfluxDB stores the polled data with a timestamp, allowing you to see trends over hours, days, or months. cisco-grafana-snmp
Grafana connects to the database to display real-time metrics like bandwidth, CPU usage, and interface status. Key Benefits Monitor SNMP devices with Grafana, Telegraf and InfluxDB Most engineers use Prometheus with the SNMP Exporter