Back to HomeBroadband Network Gateway

Enterprise-Grade BRAS/BNG Software

High-performance subscriber management and policy platform for ISPs with 5,000 to 100,000+ active users. Comparable to BisonRouter, Juniper BNG, and Cisco ASR.

100K+
Active Sessions
<1ms
Latency
99.999%
Uptime
40Gbps
Throughput

What is ISP Engine BNG?

A complete Broadband Network Gateway (BNG) / Broadband Remote Access Server (BRAS) for modern ISP infrastructures

ISP Engine BNG is a high-performance software solution that combines all functions of a traditional hardware BRAS into a flexible, scalable software platform. Designed for ISPs of all sizes - from small regional providers with 5,000 subscribers to large carriers with over 100,000 active users. The solution is based on proven open-source components and proprietary optimizations that enable unprecedented performance while maintaining low operating costs.

Key Features

  • PPPoE/IPoE termination with full RFC compliance
  • Integrated RADIUS client with CoA/DM support
  • Dynamic QoS and traffic shaping per subscriber
  • L2TP LAC/LNS for VPN aggregation
  • CGN/NAT444 with logging for legal requirements
  • Dual-Stack IPv4/IPv6 with Prefix Delegation
  • High availability with session sync and failover
  • Comprehensive REST API for automation

Scaling to Your Requirements

From 5,000 to 100,000+ subscribers - we have the right solution

Starter

5,000Subscribers

Ideal for small regional ISPs and startup providers

Specifications

Max Subscribers5,000
Throughput10 Gbps
CPU Cores8
RAM32 GB
PPPoE Sessions/sec500

Features

  • PPPoE/IPoE Termination
  • Basic QoS (HTB/TBF)
  • IPv4 + NAT
  • RADIUS Integration
  • Basic Monitoring
  • Email Support
POPULAR

Professional

25,000Subscribers

For growing ISPs with medium volume

Specifications

Max Subscribers25,000
Throughput40 Gbps
CPU Cores16
RAM64 GB
PPPoE Sessions/sec2,000

Features

  • Everything in Starter
  • Dual-Stack IPv6
  • CGN/NAT444
  • L2TP LAC/LNS
  • Advanced QoS
  • HA Active-Standby
  • Grafana Dashboards
  • Priority Support

Enterprise

100,000+Subscribers

Carrier-grade solution for large providers

Specifications

Max Subscribers100,000+
Throughput100+ Gbps
CPU Cores32+
RAM128+ GB
PPPoE Sessions/sec10,000+

Features

  • Everything in Professional
  • Multi-Node Clustering
  • HA Active-Active
  • CGNAT with EIM/EIF
  • BFD for Fast Failover
  • Custom Development
  • On-site Installation
  • 24/7 SLA Support

Core Features in Detail

Full feature parity with leading hardware BNG solutions

Subscriber Management

AAA & RADIUS

QoS & Traffic Management

NAT & CGN

L2TP & Tunneling

High Availability

Technical Specifications

Detailed hardware requirements and performance metrics

Hardware Requirements

CPU
x86_64 with AES-NI, Intel Xeon recommended
RAM
32 GB - 256 GB depending on subscriber count
Storage
SSD/NVMe, 100 GB+ for logs
NICs
Intel 10/25/40/100 GbE with DPDK support
OS
Linux (Ubuntu 22.04 LTS, Rocky 9)

Performance Metrics

Max Subscribers100,000+ per node
Throughputup to 100 Gbps per node
PPPoE Setup Rate10,000+ sessions/sec
Packet Processing14+ Mpps
Latency<1ms (DPDK Mode)
NAT Sessions4+ million concurrent

Supported Protocols

PPPoE (RFC 2516)
PPP (RFC 1661, 1332, 1877)
L2TPv2 (RFC 2661)
L2TPv3 (RFC 3931)
RADIUS (RFC 2865, 2866, 3576)
RadSec (RFC 6614)
DHCPv4 (RFC 2131)
DHCPv6 (RFC 3315, 3633)
IPv6 ND (RFC 4861)
VRRP (RFC 5798)
BFD (RFC 5880)
IPFIX (RFC 7011)

Seamless Integration

Compatible with your existing infrastructure

ISP Engine Core

Native integration with ISP Engine for complete subscriber management

FreeRADIUS

Full compatibility with FreeRADIUS and all RFC-compliant RADIUS servers

Grafana/Prometheus

Real-time metrics and dashboards for monitoring and alerting

NetFlow/IPFIX

Traffic analysis and billing with NetFlow v5/v9 and IPFIX export

MikroTik RouterOS

Interoperability with MikroTik for hybrid deployments

SNMP Management

SNMP v2c/v3 for integration with NMS platforms

Comparison with Alternatives

How ISP Engine BNG compares to other solutions

FeatureISP Engine BNGOURBisonRouterJuniper MXCisco ASR
Max Subscribers100,000+50,0001,000,000+500,000+
License CostsLowMediumVery HighVery High
Hardware CostsStandard x86Standard x86ProprietaryProprietary
PPPoE Support Full Full Full Full
IPoE Support Full Full Full Full
Dual-Stack IPv6 Full Full Full Full
CGN/NAT444 Full Full Full Full
L2TP LAC/LNS Full Full Full Full
Hierarchical QoS FullPartial Full Full
REST API FullPartialLimitedLimited
DPDK Support Yes YesN/AN/A
Open Source Base YesNoNoNo
On-site Support EU YesNo Yes Yes

Use Cases

Where ISP Engine BNG provides the most value

Regional ISPs

Perfect for local and regional providers with 5,000 to 50,000 subscribers. Replaces expensive hardware BRAS solutions with cost-effective software on standard hardware.

70% Cost SavingsFast ScalingEasy Maintenance

FTTH Deployments

Optimized for fiber deployments with PPPoE termination, VLAN-per-user, and high throughput. Supports common OLT integrations.

1 Gbps+ per UserVLAN ManagementOLT Integration

Wireless ISPs

Ideal for WISPs with dynamic subscriber counts and need for flexible QoS for different service tiers.

Flexible QoSBurst HandlingFair Use Policies

Carrier Wholesale

Supports L2TP-based wholesale models with LAC functionality for forwarding subscriber sessions to retail ISPs.

Multi-CarrierSession RoutingBilling Integration

Frequently Asked Questions

Ready for Enterprise-Grade BNG?

Contact us for a demo or custom quote