What Is Fair Usage Policy (FUP) and Why Does It Matter for Indian ISPs?

For Internet Service Providers across India, managing network resources fairly among thousands of subscribers is one of the most critical operational challenges. A Fair Usage Policy (FUP) is a set of rules that limits or reshapes the internet speed of subscribers who consume data beyond a defined threshold — ensuring that heavy users do not degrade the experience for everyone else on the network.

With India's broadband subscriber base crossing 900 million connections and growing rapidly, ISPs face immense pressure to deliver consistent speeds while keeping infrastructure costs under control. Without a robust FUP enforcement system, a small percentage of power users can consume a disproportionate share of bandwidth, leaving other subscribers frustrated.

This is where OneRADIUS — a purpose-built AAA RADIUS server software by ARCR Technologies, Hyderabad — becomes an indispensable tool for Indian ISPs.

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Understanding AAA and RADIUS in the Context of Bandwidth Management

Before diving into FUP specifics, it helps to understand what a RADIUS server actually does.

AAA stands for:

  • **Authentication** — Verifying who the user is
  • **Authorization** — Determining what the user is allowed to access
  • **Accounting** — Tracking how much the user has consumed

A RADIUS (Remote Authentication Dial-In User Service) server sits at the heart of every ISP's subscriber management system. It talks to your NAS (Network Access Server), BNG (Broadband Network Gateway), or OLT (Optical Line Terminal) to control exactly what each subscriber can do on your network.

OneRADIUS leverages all three pillars of AAA to give ISPs granular control over bandwidth policies and FUP enforcement.

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How OneRADIUS Handles Bandwidth Policy Management

1. Plan-Based Speed Assignment

OneRADIUS allows ISPs to define multiple internet plans — each with its own upload and download speed limits. When a subscriber logs in, OneRADIUS authenticates their credentials and immediately pushes the appropriate speed policy to the NAS/BNG using RADIUS attributes such as:

  • `WISPr-Bandwidth-Max-Up`
  • `WISPr-Bandwidth-Max-Down`
  • Vendor-specific attributes (VSAs) for MikroTik, Cisco, Huawei, ZTE, and others
💡 OneRADIUS supports a wide range of vendor-specific RADIUS attributes, making it compatible with most NAS and BNG equipment used by Indian ISPs including MikroTik RouterOS, Huawei MA5800, ZTE C300, and Cisco ASR series.

This means the moment a subscriber connects, their speed is automatically capped at the level matching their subscribed plan — no manual intervention required.

2. Dynamic FUP Threshold Enforcement

Here is where OneRADIUS truly shines. The accounting module continuously tracks each subscriber's data usage in real time. Once a subscriber hits a predefined FUP data limit (say 100 GB on a 100 Mbps plan), OneRADIUS can:

  • Automatically **downgrade the subscriber's speed** (e.g., from 100 Mbps to 4 Mbps post-FUP)
  • Send a **CoA (Change of Authorization)** packet to the NAS to update the session in real time — without disconnecting the subscriber
  • Apply different FUP tiers (e.g., 100 GB at full speed, next 100 GB at 20 Mbps, beyond that at 2 Mbps)
💡 CoA (Change of Authorization) is a critical RADIUS feature that lets OneRADIUS update an active subscriber session mid-flight — changing speed, assigning a new policy, or even disconnecting the user — without requiring a reconnect.

3. Time-Based and Volume-Based Policies

Indian ISPs often offer plans with different rules during peak and off-peak hours. OneRADIUS supports:

  • **Time-of-day based speed policies** — Full speed during off-peak hours (e.g., midnight to 6 AM), reduced speed during peak hours
  • **Volume-based billing** — Tracking exact bytes uploaded and downloaded per subscriber
  • **Combo policies** — Combining both time and volume rules in a single plan

This flexibility allows ISPs to design competitive plan structures that attract subscribers while protecting network integrity.

4. Unlimited Plans with Soft FUP

Many Indian ISPs market 'unlimited' broadband plans — but with a soft FUP clause in the fine print. OneRADIUS handles this elegantly by:

  • Allowing full-speed access up to the FUP limit
  • Reducing speed post-FUP while keeping the connection active
  • Resetting the FUP counter on the billing cycle date (monthly reset)
⚠️ ISPs must ensure their FUP terms are clearly communicated to subscribers as per TRAI (Telecom Regulatory Authority of India) guidelines. Misleading 'unlimited' claims without transparent FUP disclosure can attract regulatory action.

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Real-Time Accounting and Usage Monitoring in OneRADIUS

Effective FUP enforcement requires accurate, real-time accounting. OneRADIUS collects RADIUS Accounting packets (Start, Interim-Update, Stop) from the NAS and processes them to maintain live usage counters for every active session.

Key accounting features in OneRADIUS include:

  • **Live session dashboard** — View all active sessions with real-time data consumption
  • **Per-subscriber usage reports** — Daily, weekly, monthly breakdowns
  • **FUP status tracking** — Instantly see which subscribers have crossed FUP thresholds
  • **Billing integration** — Usage data feeds directly into billing cycles
💡 OneRADIUS is designed to handle the high accounting load typical of ISPs with thousands of concurrent sessions. Its architecture is optimised for the volume and frequency of accounting packets generated by large subscriber bases.

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Seamless Integration with NAS and BNG Equipment

One of the biggest pain points for Indian ISPs is ensuring their RADIUS server works smoothly with diverse hardware from multiple vendors. OneRADIUS is built specifically for the Indian ISP ecosystem and has been tested and deployed with:

  • **MikroTik** RouterOS (PPPoE, DHCP, Hotspot)
  • **Huawei** MA5800, MA5600 OLTs and BNGs
  • **ZTE** C300, C320 OLTs
  • **Cisco** ASR 9000 and 1000 series BNGs
  • **Juniper** MX series
  • **Sterlite / Tejas** equipment

This broad compatibility means ISPs do not need to worry about vendor lock-in or complex custom configurations.

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Subscriber Self-Care and FUP Transparency

A common source of subscriber complaints is lack of visibility into their FUP usage. OneRADIUS supports integration with subscriber self-care portals where users can:

  • Check their current data usage and remaining FUP quota
  • View their plan details and speed tiers
  • See their billing cycle and reset dates

This transparency dramatically reduces support calls related to 'slow internet' complaints — which are often simply post-FUP speed reductions that the subscriber was unaware of.

💡 Reducing inbound support calls by giving subscribers visibility into their FUP status is one of the fastest ROI improvements an ISP can make after deploying OneRADIUS.

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Multi-Tenant and Franchise ISP Support

Many ISPs in India operate on a franchise or reseller model — where local cable operators (LCOs) resell broadband under a larger ISP's brand. OneRADIUS supports multi-tenant architecture, allowing:

  • Each franchise/reseller to manage their own subscriber pool
  • Separate plan definitions per franchise
  • FUP rules configured independently per reseller
  • Centralised visibility for the master ISP

This makes OneRADIUS an ideal solution for Class B and Class C ISPs operating across multiple districts or circles in India.

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Compliance with TRAI and DoT Regulations

Indian ISPs are subject to regulations from the Telecom Regulatory Authority of India (TRAI) and the Department of Telecommunications (DoT). OneRADIUS helps ISPs stay compliant by:

  • Maintaining detailed subscriber session logs for audit purposes
  • Supporting **Lawful Intercept (LI)** requirements
  • Enabling proper FUP disclosure and enforcement as per TRAI broadband guidelines
  • Providing usage data for CDR (Call Detail Record) submissions
⚠️ ISPs without proper RADIUS-based session logging risk non-compliance with DoT lawful intercept directives. OneRADIUS ensures all session data is logged and retrievable for regulatory purposes.

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Why OneRADIUS Is the Right Choice for Indian ISPs

Here is a quick summary of why OneRADIUS stands out:

  • **Made for Indian ISPs** — Designed with the specific challenges of the Indian broadband market in mind
  • **Real-time FUP enforcement** — No batch processing delays; FUP kicks in the moment the threshold is crossed
  • **CoA support** — Mid-session policy changes without subscriber disruption
  • **Multi-vendor NAS compatibility** — Works with MikroTik, Huawei, ZTE, Cisco, and more
  • **Scalable architecture** — Handles ISPs from 500 subscribers to 500,000 subscribers
  • **Local support** — Based in Hyderabad with support teams that understand Indian ISP operations
  • **Affordable pricing** — Built for the cost-sensitive Indian ISP market

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Getting Started with OneRADIUS

If you are an ISP looking to implement or upgrade your RADIUS-based bandwidth management and FUP enforcement system, OneRADIUS offers:

  • **Free demo and trial** for qualified ISPs
  • **Migration support** from legacy RADIUS servers (FreeRADIUS, Dialup Admin, etc.)
  • **On-site or remote deployment** assistance
  • **Training and documentation** for your NOC team

Visit oneradius.com or contact the ARCR Technologies team in Hyderabad to schedule a demo today.

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Conclusion

For Indian ISPs, effective bandwidth policy management and FUP enforcement are not optional — they are operational necessities. Without a reliable RADIUS server like OneRADIUS, ISPs risk network congestion, subscriber dissatisfaction, revenue leakage, and regulatory non-compliance.

OneRADIUS by ARCR Technologies provides a comprehensive, scalable, and India-specific solution that gives ISPs the tools they need to manage their networks with confidence — from real-time FUP enforcement to multi-vendor NAS integration and subscriber self-care.

Make the switch to OneRADIUS and take control of your network today.