---
type: SNMP Concept
title: "What Is SNMP? Simple Network Management Protocol Explained"
description: "SNMP explained: manager, agent, MIB, OID, versions, ports, polling and traps."
resource: "https://snmp-monitoring.info/what-is-snmp/"
tags: [what-is-snmp]
timestamp: 2026-07-10T00:00:00Z
---

# What Is SNMP? Simple Network Management Protocol Explained

SNMP explained: manager, agent, MIB, OID, versions, ports, polling and traps.

## Related concepts

- Up: [SNMP Monitoring Explained — Protocol, Sensors & Tools](/index.md)
- [SNMP Architecture: Manager, Agent, MIB & Managed Device](/what-is-snmp/architecture/index.md)
- [SNMP Community String: What It Is & How to Secure It](/what-is-snmp/community-string/index.md)
- [History of SNMP: From SGMP to SNMPv3 (Timeline)](/what-is-snmp/history/index.md)
- [How SNMP Works: Polling, Traps & the Request Flow](/what-is-snmp/how-it-works/index.md)
- [What Is a MIB in SNMP? Files, Structure & Usage](/what-is-snmp/mib/index.md)
- [What Is an OID in SNMP? Object Identifiers Explained](/what-is-snmp/oid/index.md)
- [SNMP PDU Types: Get, GetNext, GetBulk, Set & Trap](/what-is-snmp/pdu/index.md)
- [SNMP Ports: 161 & 162 (UDP) Explained](/what-is-snmp/ports/index.md)
- [SNMP Traps vs Polling: Differences & When to Use Each](/what-is-snmp/traps-vs-polling/index.md)
- [SNMPv1 vs SNMPv2c vs SNMPv3: Differences Compared](/what-is-snmp/versions/index.md)

## Frequently asked questions

### What is SNMP in simple terms?

A standard way for monitoring software to ask devices for status numbers (and receive alerts) over the network, using OIDs defined in MIBs.

### What is SNMP used for?

Mostly monitoring and fault notification on network gear and servers—interfaces, resources, environmentals, UPS, and vendor-specific objects.

### What layer is SNMP?

Application layer, carried over UDP in normal deployments.

### Is SNMP TCP or UDP?

UDP for classic agent access (161) and traps (162). Don't design like it's a TCP API with free retransmit semantics—timeouts and retries are your problem.

## Source

Concept generated from https://snmp-monitoring.info/what-is-snmp/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).