aid: snmp name: SNMP description: >- Simple Network Management Protocol (SNMP) is the foundational IETF standard for monitoring and managing network devices. SNMP defines a request/response protocol over UDP (ports 161 and 162) for retrieving and altering management variables exposed by agents on routers, switches, servers, UPSs, and other equipment, plus an asynchronous trap/notification channel for event delivery. The protocol family spans three major generations — SNMPv1 (RFC 1157), SNMPv2c (RFC 1901-1908), and the modular SNMPv3 architecture (RFC 3411-3418, extended by RFC 7860 for HMAC-SHA-2 authentication) — and is paired with the Structure of Management Information (SMI) and a vast catalog of MIB modules, most notably the IF-MIB (RFC 2863) for network interfaces. SNMP remains the lingua franca of network monitoring, consumed primarily by NMS platforms such as Nagios, Zabbix, PRTG, SolarWinds, LibreNMS, and Observium, and implemented in open source primarily by the Net-SNMP suite. type: Index image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg tags: - SNMP - Network Management - Network Monitoring - IETF - Protocol - MIB - SMI - OID - Agents - Traps - UDP - Operations url: https://raw.githubusercontent.com/api-evangelist/snmp/refs/heads/main/apis.yml created: '2025-01-01' modified: '2026-05-23' specificationVersion: '0.19' apis: - aid: snmp:snmpv1 name: SNMPv1 (RFC 1157) description: >- The original Simple Network Management Protocol defined in RFC 1157 (May 1990). Establishes the five core PDUs (GetRequest, GetNextRequest, GetResponse, SetRequest, Trap), community-string authentication, ASN.1 message encoding, and UDP transport on ports 161 and 162. Now classified as Historic by the IETF but still widely deployed on legacy equipment. humanURL: https://datatracker.ietf.org/doc/html/rfc1157 tags: - SNMPv1 - Community Strings - PDU - Historic properties: - type: Specification url: https://datatracker.ietf.org/doc/html/rfc1157 - type: Documentation url: https://datatracker.ietf.org/doc/rfc1157/ - aid: snmp:snmpv2c name: SNMPv2c (RFC 1901-1908) description: >- Community-based SNMPv2, the most widely deployed version of SNMP in production today. Adds the GetBulkRequest PDU for efficient table retrieval and the InformRequest PDU for acknowledged notifications, while retaining the community-string security model of SNMPv1. RFC 3416 later republished the v2 protocol operations as part of the SNMPv3 framework. humanURL: https://datatracker.ietf.org/doc/html/rfc1901 tags: - SNMPv2c - GetBulk - InformRequest - Community Strings properties: - type: Specification url: https://datatracker.ietf.org/doc/html/rfc1901 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3416 - type: Documentation url: https://datatracker.ietf.org/doc/rfc1901/ - aid: snmp:snmpv3 name: SNMPv3 Architecture (RFC 3411-3418) description: >- The modular SNMPv3 management framework. RFC 3411 defines the SNMP engine, Message Processing Subsystem, Security Subsystem, and Access Control Subsystem; RFC 3414 specifies the User-based Security Model (USM) with authentication and privacy; RFC 3415 specifies the View-based Access Control Model (VACM); RFC 3416 redefines protocol operations; RFC 3417 covers transport mappings; RFC 3418 contains the MIB for SNMPv3 itself. RFC 7860 extends USM with HMAC-SHA-2 authentication protocols. humanURL: https://datatracker.ietf.org/doc/html/rfc3411 tags: - SNMPv3 - USM - VACM - Security - Authentication - Privacy properties: - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3411 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3412 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3414 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3415 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3416 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3417 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3418 - type: Specification url: https://datatracker.ietf.org/doc/html/rfc7860 - aid: snmp:if-mib name: IF-MIB (RFC 2863) — The Interfaces Group MIB description: >- The canonical SNMP MIB module for network interface management, published June 2000. Defines ifTable, ifXTable, ifStackTable, and ifRcvAddressTable, plus the ifType enumeration registered by IANA. Universally implemented by routers, switches, NICs, and operating systems; the most-polled MIB in production network monitoring. humanURL: https://datatracker.ietf.org/doc/html/rfc2863 tags: - IF-MIB - MIB - Interfaces - ifTable - ifXTable properties: - type: Specification url: https://datatracker.ietf.org/doc/html/rfc2863 - type: Documentation url: https://www.iana.org/assignments/ianaiftype-mib/ianaiftype-mib - aid: snmp:smi name: SMI and the OID Tree description: >- Structure of Management Information — the data definition language and naming scheme that every MIB module is written against. The IANA SMI Numbers registry administers the OID hierarchy rooted at 1.3.6.1, including standard MIBs under 1.3.6.1.2.1 and Private Enterprise Numbers under 1.3.6.1.4.1 (the namespace organizations use to publish their own MIBs). humanURL: https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml tags: - SMI - OID - IANA - Enterprise Numbers - PEN properties: - type: Documentation url: https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml - type: Documentation url: https://www.iana.org/assignments/enterprise-numbers/ common: - type: Website url: https://datatracker.ietf.org/wg/opsawg/about/ - type: Specification url: https://datatracker.ietf.org/doc/html/rfc3411 - type: Documentation url: https://www.net-snmp.org/ - type: SourceCode url: https://github.com/net-snmp/net-snmp - type: Registry url: https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml maintainers: - FN: Kin Lane email: kin@apievangelist.com