Introduction

This document outlines the compatibility matrix among various NEMO releases and the dependencies they rely on. These dependencies may include operating system dependencies or sub-system dependencies, such as MongoDB serving as the database, among other subsystems.

Subsystems Overview

Below is a list of the subsystems NEMO relies on for various functions:

Subsystem	Description	Requirement	Location
MongoDB	NoSQL database for storing configuration data and calls data	Mandatory	Central Server(s), Arbiter
FreeRadius	Open-source RADIUS server used for accounting SBC devices	Optional	Collection server(s)

Compatibility Matrix

Dependancy	NEMO 4.1	NEMO 5.0	NEMO 5.1	NEMO 6.0
RHEL 6.x	✅	❌	❌	❌
CentOS 6.x	✅	❌	❌	❌
RHEL 7.x	✅ 1	✅	✅	❌
CentOS 7.x	✅ 1	✅	✅	❌
RHEL 8.x	❌	✅	✅	✅
AlmaLinux OS 8.x	❌	✅	✅	✅
RHEL 9.x	❌	❌	❌	✅
AlmaLinux OS 9.x	❌	❌	❌	✅
MongoDB 3.6	✅	❌	❌	❌
MongoDB 4.0	✅	❌	❌	❌
MongoDB 4.2	✅	❌	❌	❌
MongoDB 4.4	✅	❌	❌	❌
MongoDB 4.4	✅	❌	❌	❌
MongoDB 5.0	❌	✅	✅	✅
MongoDB 6.0	❌	✅1	✅1	✅1
MongoDB 7.0	❌	✅1	✅1	✅1
MongoDB 8.0	❌	✅1	✅1	✅1
FreeRadius 2.1.12	✅	❌	❌	❌
FreeRadius 3.0.13	❌	✅	✅	✅

¹ Supported in CDR collection mode only, not with probes