LibreNMS

Community-developed auto-discovering network monitor

Overview

LibreNMS is a free, community-developed network monitoring system. It automatically discovers devices using CDP, FDP, LLDP, OSPF, BGP, SNMP and ARP, and offers flexible alert rules with notifications by email, IRC, Slack and other channels[20]. Other features include a full API, bandwidth billing for ports, automatic updates, distributed polling, mobile apps for iPhone and Android and a mobile-friendly web interface[20].

LibreNMS integrates with established open-source network tools such as NfSen, collectd, SmokePing, RANCID and Oxidized, and supports authentication via MySQL, HTTP, LDAP, RADIUS and Active Directory[20]. These integrations suit network teams that assemble their own open-source toolchain.

Support is community-based, primarily through Discord and a forum, with GitHub issues reserved for new device support; commercial SLA-backed support is available through Config Services Ltd[20]. Like Zabbix, LibreNMS requires in-house administration and Linux skills, and it focuses on network devices rather than application performance.

What LibreNMS does

  • Automatic discovery via CDP, LLDP, OSPF, BGP, SNMP and ARP
  • Flexible alert rules
  • Full API
  • Port bandwidth billing
  • Distributed polling
  • Mobile apps

LibreNMS pricing

Free software; commercial support available from Config Services Ltd.

LibreNMS strengths and limitations

Strengths

  • No licence cost
  • Strong auto-discovery
  • Integrates with open-source network tools
  • Distributed polling

Limitations

  • Self-hosting and Linux skills required
  • Community support by default
  • Limited application monitoring
  • No vendor-backed SaaS

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