---
type: Device Guide
title: "SNMP on Cisco: Enable It & Key OIDs (IOS/IOS-XE)"
description: "Configure and monitor Cisco devices over SNMP — snmp-server commands, interfaces via IF-MIB, and CPU/memory/temperature via Cisco enterprise MIBs."
resource: "https://snmp-monitoring.info/devices/cisco/"
tags: [devices]
timestamp: 2026-07-11T00:00:00Z
---

# SNMP on Cisco: Enable It & Key OIDs (IOS/IOS-XE)

Configure and monitor Cisco devices over SNMP — snmp-server commands, interfaces via IF-MIB, and CPU/memory/temperature via Cisco enterprise MIBs.

## Related concepts

- Up: [SNMP by Device Type: Servers, Network Gear, UPS & More](/devices/index.md)

## Frequently asked questions

### How do I enable SNMP on Cisco?

On IOS/IOS-XE, define an ACL for your manager's IP, then add snmp-server community <string> RO <acl> for read-only access, plus snmp-server location and contact. For encrypted access, configure SNMPv3 with snmp-server group and snmp-server user. Always scope with an ACL, never use public, and keep it read-only.

### Which MIB has Cisco CPU utilization?

Cisco CPU utilization is in the CISCO-PROCESS-MIB, under the Cisco enterprise tree (1.3.6.1.4.1.9). Memory is in CISCO-MEMORY-POOL-MIB and environmental data (temperature, fans, PSU) in CISCO-ENVMON-MIB. Load the module into your manager, and verify the exact leaf OID for your platform with Cisco's SNMP Object Navigator, since it varies by model.

### What OIDs do Cisco interfaces use?

Cisco interfaces use the standard IF-MIB (1.3.6.1.2.1.2 and the high-capacity .31), the same as any other device — ifName, ifHCInOctets/ifHCOutOctets for traffic, and ifOperStatus for up/down. No Cisco-specific MIB is needed for interface stats; the vendor MIBs are only for CPU, memory, and environmental data.

### Does Cisco support SNMPv3?

Yes. Cisco IOS and IOS-XE fully support SNMPv3, configured with snmp-server group and snmp-server user to define authenticated (SHA) and encrypted (AES) access. It's the recommended choice over a v2c community for anything beyond a trusted management network, since it avoids sending a cleartext community string on the wire.

## Source

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