SnmpKit 🚀

IMPORTANT: Breaking changes in 1.0

• Standardized result shape: all SNMP operations now return enriched maps per varbind: %{name?, oid, type, value, formatted?}
• include_names: true by default (can be disabled per call or globally)
• include_formatted: true by default (can be disabled to avoid formatting overhead)
• Pretty helpers now preserve type and raw value and return the same enriched map shape
• Migration guide: see docs/enriched-output-migration.md
• Removed deprecated functions: get_with_type/3 and get_next_with_type/3 (use get/3 and get_next/3 which now always include type in the enriched map)
• Multi-target APIs keep their outer return_format but inner items are enriched maps

A modern, comprehensive SNMP toolkit for Elixir - featuring a unified API, pure Elixir implementation, and powerful device simulation.

SnmpKit is a complete SNMP (Simple Network Management Protocol) solution built from the ground up in pure Elixir. It provides a clean, organized API for SNMP operations, MIB management, and realistic device simulation.

✨ Key Features

Performance and result toggles

• include_names: true by default; set include_names: false per call or via application config to skip reverse lookup and speed up response processing
• include_formatted: true by default; set include_formatted: false to skip formatting and return raw values only

Examples

• High-throughput walk without formatting or name resolution:

{:ok, rows} = SnmpKit.SNMP.walk("192.168.1.1", "ifTable", include_names: false, include_formatted: false)
# rows: [%{oid: "1.3.6...", type: :integer, value: 1}, ...]

Multi-target defaults (1.0)

• Concurrent Multi is the default for multi-target operations (get_multi, get_bulk_multi, walk_multi)
• Default SNMP version for multi-target operations is :v2c (override with version: :v1 if needed)
• No manual engine/service start is required — components are ensured at call time
• Legacy/simple behavior is still available via strategy: :simple
• Note: Single-target operations default to :v1 (configurable via SnmpKit.SnmpMgr.Config)

# Default: Concurrent Multi
{:ok, results} = SnmpKit.get_multi([{"h1", "sysDescr.0"}, {"h2", "sysUpTime.0"}])

# Legacy/simple path (opt-in)
{:ok, results} = SnmpKit.get_multi([{"h1", "sysDescr.0"}, {"h2", "sysUpTime.0"}], strategy: :simple)

• 🎯 Unified API - Clean, context-based modules (SnmpKit.SNMP, SnmpKit.MIB, SnmpKit.Sim)
• 🧬 Pure Elixir Implementation - No Erlang SNMP dependencies
• 📋 Advanced MIB Support - Native parsing, compilation, and object resolution
• 🖥️ Realistic Device Simulation - Create SNMP devices for testing and development
• ⚡ High Performance - Optimized for large-scale operations and concurrent requests
• 🧪 Testing Friendly - Comprehensive test helpers and simulated devices

🚀 Quick Start

Installation

def deps do
  [
    {:snmpkit, "~> 1.3"}
  ]
end

Basic Usage

# Basic SNMP operations return enriched maps
{:ok, %{name: name, oid: oid, type: type, value: description, formatted: formatted}} =
  SnmpKit.SNMP.get("192.168.1.1", "sysDescr.0")

{:ok, system_info} = SnmpKit.SNMP.walk("192.168.1.1", "system")
# system_info: [
#   %{name: "sysDescr.0", oid: "1.3.6.1.2.1.1.1.0", type: :octet_string, value: "...", formatted: "..."},
#   ...
# ]

# MIB operations
{:ok, oid} = SnmpKit.MIB.resolve("sysDescr.0")
{:ok, name} = SnmpKit.MIB.reverse_lookup([1, 3, 6, 1, 2, 1, 1, 1, 0])

# Device simulation
device_profile = %{
  name: "Test Router",
  objects: %{[1, 3, 6, 1, 2, 1, 1, 1, 0] => "Test Router v1.0"}
}
{:ok, device} = SnmpKit.Sim.start_device(device_profile, port: 1161)

🏗️ Architecture

• SnmpKit.SNMP - Complete SNMP manager protocol operations
• SnmpKit.MIB - Comprehensive MIB management
• SnmpKit.Sim - Realistic device simulation
• SnmpKit - Direct access for convenience

📚 Documentation

• Complete API Documentation - Full function reference
• Concurrent Multi (High-Throughput Multi-Target) - Concepts, defaults, and return formats
• Enriched Output Migration Guide - Migrate from 0.x to 1.x
• Quickstart Livebook - Get running in 5 minutes
• High Performance Guide - Polling at scale
• Timeout Documentation - Understanding timeout behavior and configuration
• MIB Guide - Working with MIBs
• Testing Guide - Testing strategies
• Contributing Guide - Development guidelines

🤝 Contributing

We welcome contributions! Please see the Contributing Guide for guidelines.

📄 License

SnmpKit is released under the MIT License.

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Ready to simplify your SNMP operations? Get started with SnmpKit today! 🚀