GPEN vs GPON: The Smarter Network Infrastructure Solution for ISPs & WISPs

Revolutionizing ISP Networks with MikroTik's GPEN Technology

A Smarter, Cost-Effective, and Scalable Alternative to GPON

Table of Contents

1. Introduction: The Future of ISP Infrastructure
2. How GPEN Works: Redundant and Scalable by Design
3. ISP and WISP Deployment: GPON vs GPEN (Brief Model)
4. 1. Core Layer: High-Performance Routing and Processing
5. 2. Distribution Layer: High-Speed Fiber Connectivity
6. 3. Access Layer: GPEN-Powered Reverse PoE Network
7. 4. GPEN Add-Ons: Extenders and Power Injectors
8. Advantages of GPEN Over GPON
9. Hardware Image Placeholders
10. Conclusion: The Future is GPEN

Introduction: The Future of ISP Infrastructure

For Internet Service Providers (ISPs) and Wireless ISPs (WISPs), cost-efficient high-performance deployment is essential. GPON has long been used for fiber expansion, but MikroTik GPEN (Gigabit Passive Ethernet Network) offers a practical Ethernet-based model with lower deployment complexity and strong performance.

Why choose GPEN over GPON?

• Reduces CAPEX by removing expensive GPON splitters and base stations.
• Accelerates deployment with Ethernet simplicity and flexible expansion.
• Cuts long-term maintenance effort using reliable hardware built for continuous operation.
• Supports high bandwidth demand with up to 10 Gbps uplinks.
• Enables reverse PoE powering from customer-side connections.

How GPEN Works: Redundant and Scalable by Design

GPEN uses reverse PoE-powered switches such as MikroTik NetPower 7R and NetPower 15FR as neighborhood access points. Instead of requiring direct local power, the switch receives power from connected customer lines, reducing power wiring complexity and installation time.

Example: If seven customers are connected to NetPower 7R and several CPEs are unplugged, the switch can remain operational as long as sufficient reverse PoE power remains available from active lines.

ISP and WISP Deployment: GPON vs GPEN (Brief Model)

GPON-Based Deployment

• Best for operators standardized on OLT/ONT optical architecture.
• Requires GPON core elements, splitters, optical planning, and dedicated power strategy at network points.
• Good fit for large centralized fiber projects with strict GPON ecosystems.

GPEN-Based Deployment

• Best for ISPs/WISPs seeking lower cost and faster rollout with Ethernet operations.
• Uses reverse PoE and switching architecture to simplify field deployment.
• Ideal for suburban blocks, MDUs, mixed wired-wireless expansion, and staged upgrades from legacy access.

1. Core Layer: High-Performance Routing and Processing

The core layer handles routing, traffic policies, security, and peering performance for growing subscriber bases.

Recommended MikroTik Core Routers

• CCR2216 - For large-scale throughput-intensive deployments.
• CCR2116 - High-performance routing with robust feature depth.
• CCR2004 - Cost-effective option for medium-sized networks.
• RB5009 - Compact and capable for smaller ISP environments.

2. Distribution Layer: High-Speed Fiber Connectivity

The distribution layer aggregates capacity from the core and forwards bandwidth to access switches.

Recommended MikroTik Distribution Switches

• CRS317-1G-16S+RM - 16 x SFP+ 10G ports for backbone density.
• CRS328-24S+4C+RM - 24 x SFP+ 10G ports for scalable ISP distribution.
• CRS326-24S+2Q+RM - 10G switching with 2 x 40G uplinks for growth.

3. Access Layer: GPEN-Powered Reverse PoE Network

The access layer removes heavy dependency on local power infrastructure and enables quick customer turn-up.

NetPower 7R

• 7 x reverse PoE Gigabit Ethernet ports.
• 1 x PoE-out Gigabit Ethernet port for additional devices.
• 2 x SFP+ 10G uplinks for high-speed and redundancy options.
• SwitchOS management with VLAN filtering and Layer 2 controls.

NetPower 15FR

• 15 x reverse PoE 10/100 Ethernet ports for higher-density sites.
• 2 x SFP fiber ports for scalable uplink architecture.
• VLAN isolation and segmentation for secure multi-tenant delivery.

4. GPEN Add-Ons: Extenders and Power Injectors

• GPEN21 - PoE input/output, Ethernet + SFP, VLAN and SNMP visibility.
• GPEN11 - Cost-effective injector with 2 x Gigabit Ethernet and PoE-out support.
• GPeR - Extends Ethernet distance up to 210 meters for building and campus layouts.

Advantages of GPEN Over GPON

1) Reduced Deployment Costs

• No GPON splitter/base-station dependency in GPEN architecture.
• Reverse PoE lowers dedicated power wiring requirements.
• Faster rollout and lower field labor costs.

2) High Throughput for Modern Demand

• Up to 10 Gbps uplink capacity per NetPower switch model.
• Designed for stable broadband delivery and future service tiers.

3) Easy Scalability and Management

• Modular expansion by adding GPEN nodes.
• SwitchOS and RouterOS support practical operational control.

4) Reliability for Long-Term Operation

• Industrial-grade hardware for long service life.
• Outdoor-ready form factors for harsh field conditions.

Conclusion: The Future is GPEN

GPEN gives ISPs and WISPs a strong path to deliver high-speed, reliable internet with lower deployment cost and less operational complexity. With reverse PoE, scalable fiber uplinks, and MikroTik's routing and switching stack, providers can grow faster while improving uptime.

Ready to modernize your network? Deploy GPEN and scale with confidence.