SNMP — Simple Network Management Protocol
Definition
A standard internet protocol for collecting and organizing information about devices on IP networks, used for monitoring server hardware, switches, routers, UPS units, and printers.
Context & Usage
SNMP v1/v2c uses community strings (effectively passwords) for authentication — clear-text on the network. SNMPv3 adds encryption and stronger authentication. Vendor MIBs (Management Information Bases) translate raw OIDs into human-readable metrics. Common SNMP monitoring tools: LibreNMS, PRTG, Zabbix, Cacti, SolarWinds.
Examples
- Dell iDRAC SNMP for hardware health
- Cisco IOS SNMP for switch monitoring
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