Netxol NMM vs LibreNMS: what an FTTH ISP actually needs
LibreNMS is a great starting NMS. It is also where an ISP hits its ceiling — no ACS, no CRM link, no OLT provisioning. Here is the honest side-by-side.
Every FTTH ISP evaluating a monitoring platform ends up asking the same question: do we start free with LibreNMS and scale into it, or do we buy a purpose-built ISP platform like Netxol NMM? Both answers are defensible, but they map to very different operating models over the next three years.
LibreNMS is a free, PHP-based open-source NMS descended from Observium. It is genuinely good at what it does — SNMP polling, basic threshold alarms, RRD graphs. Hundreds of small ISPs across the world are running it right now, and they should not feel bad about that choice. But it was designed as a network monitoring tool, not as an ISP operating layer.
Where the two overlap
On pure network monitoring, LibreNMS and Netxol NMM cover a lot of the same ground: SNMP v2c/v3, syslog collection, ICMP reachability, LLDP/CDP topology and per-device dashboards. If your only ask is "watch a couple of hundred devices and page us on outage", either will get the job done for a while.
Where they part ways
| Metric | Before | After | Δ |
|---|---|---|---|
| Auto-discovery + classification | LibreNMS · manual seed + poll | Netxol NMM · range/seed + vendor/model/role scored | — |
| Multi-vendor OLT abstraction | LibreNMS · treat OLT as any SNMP device | Netxol NMM · native Huawei / ZTE / FiberHome / CDATA / V-SOL / Nokia + more | — |
| ONT / ONU provisioning | LibreNMS · none | Netxol NMM · one-click on the shared graph | — |
| Built-in ACS (TR-069 · TR-369) | LibreNMS · none | Netxol NMM · shipping | — |
| Built-in RADIUS / PPPoE | LibreNMS · none | Netxol NMM · included | — |
| AI Engine (RCA, auto-fix, care) | LibreNMS · none | Netxol NMM · shipping with NOS 0.1.0 | — |
| Shared graph with CRM / Billing / ERP | LibreNMS · none — silo | Netxol · same identity across every module | — |
| Deployment | LibreNMS · install + maintain LAMP stack yourself | Netxol · Core appliance boots pre-installed | — |
The stack tax an ISP actually pays
LibreNMS is free. But an FTTH operator running a real network usually ends up stitching together LibreNMS + GenieACS + FreeRADIUS + daloRADIUS + Splynx or Sonar for billing + a home-grown CSV bridge into finance. Each of those has its own database, its own login, its own upgrade cycle. Netxol was built to replace that stack — one appliance, one console, one identity across NMM, ACS, RADIUS, CRM, Billing and ERP.
When LibreNMS is still the right call
If you have under 500 subscribers, a single OLT and no plans to scale, LibreNMS is a perfectly reasonable free choice. The moment you need multi-vendor OLT provisioning, an ACS, a subscriber-facing app or a defensible SLA per neighbourhood, the calculation changes.
Methodology + how we ran this comparison
We built both stacks in a lab against the same synthetic 5,000-subscriber FTTH profile: 4 OLTs (Huawei MA5800, ZTE C620, FiberHome AN6000, BDCOM P3616), 40,000 ONTs, 100,000 SNMP polls per hour, roughly 15,000 syslog events per hour. LibreNMS ran on its recommended LAMP configuration; Netxol NMM ran on a Core X5. Numbers below reflect steady-state observation over one working week.
LibreNMS
Engineer-hours per week to keep it healthy
~8 h (mostly template + poller tuning)
Netxol NMM
Engineer-hours per week to keep it healthy
~1 h (dashboard use, no maintenance)
LibreNMS
Time to add a new OLT vendor
~2 days (custom MIB + template)
Netxol NMM
Time to add a new OLT vendor
Zero (already abstracted)
Migration from LibreNMS to Netxol NMM
The playbook is well-worn. Read-only run both stacks against the same devices for two weeks; import the device inventory and tags via CSV; validate the alarm parity; cut the alarm feed over at a maintenance window. Total elapsed time for a 5,000-subscriber operator is typically two to three weeks including operator training. See [Netxol NMM](/products/modules/nmm) and the [OLT management solution](/solutions/olt-management) for detail.