# NetSense NMS

> FTTH network monitoring for ISPs. NetSense monitors fiber networks end-to-end: OLTs, PON ports, ONUs, switches, and customer WiFi via TR-069. 30-second polling, smart alert correlation with 95% noise reduction, multi-vendor support across 15+ OLT vendors. Built by Extreme Labs.

## Product

- [Homepage](https://netsense-nms.com): Overview, features, success metrics, FAQ
- [SensyAI](https://netsense-nms.com/sensyai): AI troubleshooting layer. One search walks the whole path (upstream, core, BNG, distribution, OLT, ONU, WiFi) and returns a root-cause verdict separating network from in-home issues
- [OLT Monitoring](https://netsense-nms.com/olt-monitoring): Real-time OLT health, optical power levels, ONU status, multi-vendor support (Huawei, ZTE, Nokia, Calix, FiberHome)
- [PON Monitoring](https://netsense-nms.com/pon-monitoring): Last-mile fiber monitoring, partial PON failure detection, ONU signal tracking
- [Switch & Port Monitoring](https://netsense-nms.com/switch-port-monitoring): Port-level traffic, errors, utilization, SFP diagnostics
- [Server Monitoring](https://netsense-nms.com/server-monitoring): Linux server monitoring over SNMP, covering CPU, memory, disks, network interfaces, temperature, syslog
- [TR-069 ACS](https://netsense-nms.com/tr069-acs): Remote CPE management, WiFi telemetry, customer experience monitoring
- [Network Topology](https://netsense-nms.com/network-topology): Interactive network maps, on-demand dynamic per-device views, dependency visualization
- [Alerting & Escalation](https://netsense-nms.com/alerting): Smart alert correlation, 95% noise reduction, escalation policies
- [Supported Vendors](https://netsense-nms.com/vendors): 15+ OLT vendors and 10+ switch brands, including Huawei, Nokia, Genexis, Juniper, Cisco, EdgeCore, and more

## Comparisons

- [Compare NetSense NMS](https://netsense-nms.com/compare): Comparison hub explaining why ISPs choose purpose-built FTTH monitoring
- [NetSense vs PRTG](https://netsense-nms.com/compare/prtg): Purpose-built ISP monitoring vs enterprise all-in-one platform
- [NetSense vs SmartOLT](https://netsense-nms.com/compare/smartolt): Full-stack ISP monitoring vs OLT-only management tool
- [SmartOLT Alternative](https://netsense-nms.com/smartolt-alternative): Why ISPs replace SmartOLT and how to evaluate a monitoring-first alternative
- [NetSense vs Observium](https://netsense-nms.com/compare/observium): Purpose-built FTTH monitoring vs general-purpose SNMP platform
- [NetSense vs LibreNMS](https://netsense-nms.com/compare/librenms): Purpose-built FTTH monitoring vs open-source general-purpose NMS
- [NetSense vs Zabbix](https://netsense-nms.com/compare/zabbix): Purpose-built FTTH monitoring vs open-source enterprise platform
- [NetSense vs AdminOLT](https://netsense-nms.com/compare/adminolt): Full-stack ISP monitoring vs OLT provisioning tool
- [NetSense vs VSOL INCE](https://netsense-nms.com/compare/vsol-ince): Vendor-neutral ISP monitoring vs hardware vendor device management platform

## Tools

- [All Tools](https://netsense-nms.com/tools): Free ISP network planning calculators for SLA uptime, subnet, MTTR, and PON power budget
- [SLA Uptime Calculator](https://netsense-nms.com/tools/sla-uptime-calculator): Calculate allowed downtime for any SLA percentage, track error budget usage, ISP SLA tier guidance
  - [Two Nines (99%)](https://netsense-nms.com/tools/sla-uptime-calculator/two-nines): 7h 18m monthly downtime; typical for internal tools, back-office systems
  - [Three Nines (99.9%)](https://netsense-nms.com/tools/sla-uptime-calculator/three-nines): 43m monthly downtime; typical for residential broadband, small business
  - [Four Nines (99.99%)](https://netsense-nms.com/tools/sla-uptime-calculator/four-nines): 4m 23s monthly downtime; typical for business fiber, enterprise leased lines
  - [Five Nines (99.999%)](https://netsense-nms.com/tools/sla-uptime-calculator/five-nines): 26s monthly downtime; typical for carrier-grade, critical infrastructure
  - [Six Nines (99.9999%)](https://netsense-nms.com/tools/sla-uptime-calculator/six-nines): 2.6s monthly downtime; typical for life-critical systems, core telecom
- [Subnet Calculator](https://netsense-nms.com/tools/subnet-calculator): IPv4 subnet calculator with CIDR notation, network/broadcast addresses, host ranges, ISP-specific cheat sheet
- [MTTR Calculator](https://netsense-nms.com/tools/mttr-calculator): Calculate Mean Time To Recovery from incident data, benchmark against industry tiers, reliability metric definitions
- [PON Power Budget Calculator](https://netsense-nms.com/tools/pon-power-budget-calculator): GPON and XGS-PON optical link budget calculator with splitter losses, fiber attenuation, SFP class selection, and margin verification for FTTH deployments

## Pricing

- [Pricing](https://netsense-nms.com/pricing): Transparent per-node pricing. Free tier up to 1,000 nodes. Growth (2,000–25,000 nodes) starting at $0.04/node/month. Pro (25,001–250,000 nodes) starting at $0.03/node/month. Enterprise (250,000+) custom pricing. Optional Pulse add-on for TR-069/WiFi management. 1-month free trial on all paid plans. Month-to-month, no contracts.

## Resources

- [About](https://netsense-nms.com/about): Company overview. NetSense NMS is built by Extreme Labs (founded 2009, Sofia HQ + Gurugram APAC office). Includes sister products (CacheMaster, Extreme IX, IX as a Service), customer references, values, and team background
- [Blog](https://netsense-nms.com/blog): ISP network monitoring insights, FTTH best practices, product updates
- [Changelog](https://netsense-nms.com/changelog): Latest features, improvements, and bug fixes

## Guides & Articles

- [ONU Offline Troubleshooting: A Practical Guide for ISPs](https://netsense-nms.com/blog/onu-offline-troubleshooting-a-practical-guide-for-isps-running-ftth): Diagnosing ONU/ONT offline events in GPON/EPON networks, covering dying gasp vs optical fault, RX power analysis, partial PON failures, reducing MTTR
- [Detecting Partial PON Port Failures Before Customers Call](https://netsense-nms.com/blog/detecting-partial-pon-port-failures-before-customers-call): How to spot degrading PON ports early using optical power trends and ONU status distribution
- [Moving Beyond Traditional Ping Monitoring](https://netsense-nms.com/blog/moving-beyond-traditional-ping-monitoring): Why ICMP-only monitoring misses fiber faults, and what ISPs should measure instead
- [How to Stop Outbound DDoS in ISP Networks](https://netsense-nms.com/blog/how-to-stop-outbound-ddos-in-isp-networks): Detecting and mitigating DDoS traffic originating from inside the subscriber network
- [7 Ways to Reduce FTTH Network Downtime](https://netsense-nms.com/blog/7-ways-to-reduce-ftth-network-downtime): Practical tactics ISPs use to cut fiber network outages and improve availability
- [Open-Source NMS: Great for Servers and Routers, Not for PON Networks](https://netsense-nms.com/blog/open-source-nms-great-for-servers-and-routers-not-for-pon-networks): Where tools like Zabbix and LibreNMS fall short for last-mile FTTH monitoring
- [Build vs Buy for Network Monitoring](https://netsense-nms.com/blog/build-vs-buy-for-network-monitoring-custom-tool): The real cost of maintaining a custom in-house monitoring tool versus a purpose-built platform
- [Put Network Monitoring in the Cloud](https://netsense-nms.com/blog/olts-need-a-break-put-network-monitoring-in-the-cloud): Why offloading polling and correlation from OLTs to the cloud improves reliability
- [20 Years of ISP Network Operations: Lessons Learned](https://netsense-nms.com/blog/20-years-isp-network-operations-lessons): Hard-won operational lessons from two decades of running ISP networks

## Legal

- [Privacy Policy](https://netsense-nms.com/privacy): How we collect, use, and protect personal data (GDPR compliant)
- [Terms of Service](https://netsense-nms.com/terms): Terms governing use of the NetSense NMS platform

## Key Facts

- Monitors 4,500+ OLTs, 1.4M+ ONUs, 3,500+ switches, 125K+ ports
- 30-second polling intervals
- 95% alert noise reduction through smart correlation
- Cloud SaaS with zero infrastructure to manage
- Multi-vendor: Huawei, ZTE, Nokia, Calix, FiberHome, and more
- Built by Extreme Labs (https://extremelabs.io)