Netropy Network Emulator
Test and Optimize Performance Before Launching
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Get an in-depth look at our Netropy Network Emulation Solutions including key features, models, and specs.

Emulate Complex Network Scenarios for Advanced Performance Testing
Test application performance under real-world conditions at speeds up to 100 Gbps. The Netropy Network Emulator is both more powerful and easier to use than other leading network testing devices. With Netropy, your IT team can deploy complex test networks in just minutes.
Test Application Performance with High-Precision Emulation
Emulate real-world networks to benchmark, troubleshoot, and validate the performance of your most critical applications before and after deployment.
The Netropy Network Emulator is purpose-built to meet your organization’s needs. Companies can isolate, observe, test, and refine performance under varying conditions — including Wi-Fi, 5G, satellite, SD-WAN networks, and more. With precise WAN emulation tools, users can perform consistent, reproducible tests in a controlled lab environment.
Automate testing with a robust RESTful API to optimize performance at scale.
A Fast, Flexible Network Emulator for Any Scenario
Emulate up to 30 unique WAN links per port pair and measure the impact of network impairments in real time. Simulate bandwidth constraints, latency, jitter, and packet loss — all at speeds up to 100 Gbps.
Users can adjust parameters dynamically in real-time without restarting tests. The intuitive browser-based GUI enables seamless setup in minutes — even for beginners. No need for extensive training.
The Netropy Network Emulator supports today’s complex environments with precision. Configure your system for IoT devices, cross-platform applications, video, and more.
Purpose-Built for High-Performance Testing
Gain unparalleled control over your testing infrastructure. Unlike shared environments, Netropy’s hardware-based solution eliminates performance variability. That way, you always have accurate conditions for latency, throughput, and packet loss.
As testing demands grow, you can proactively identify challenges, improve end-user experiences, and make informed decisions — without the guesswork.
Better Network Testing ROI
Netropy Network Emulators deliver high-precision network emulation at a cost-effective price point. No matter what model you choose, our hardware offers better value than many other testing solutions on the market. We offer competitive pricing so organizations like yours can have advanced network emulation capabilities that provide better returns on application deployment and testing investments.
What Can You Do With the Netropy Network Emulator?
Netropy comes with a comprehensive feature set to help you isolate and test against varying network conditions and overcome all sorts of network testing challenges. Here’s a look at what’s possible with Apposite network emulators:
- Concurrent Testing: Multiple emulation engines (Netropy N91, 10G2, 10G4) enable simultaneous performance testing for complex scenarios.
- Packet Filtering: Assign packets to specific links using IP address, VLAN, or other identifiers for precise testing.
- Bandwidth Emulation: Simulate links from 100 bps to 100 Gbps, accommodating diverse network environments. Throttle bandwidth speeds to identify how much bandwidth an application needs, which can prevent over-purchasing.
- Realistic Latency: Emulate delays up to 20 seconds in each direction, with jitter control in 0.01 ms increments, dropped packet simulation, and more.
- Interface Flexibility: Supports copper and SFP ports, with dual-rate 1/10 Gbps SFP+ ports for seamless integration.
- Packet Loss & Corruption: Test the impact of random, burst, or periodic packet loss and corruption on critical applications like video and VoIP.
- Capture & Replay: Record real-world network delay and loss characteristics, then replay them for accurate performance analysis.
- Background Utilization: Simulate congested networks without additional traffic generators or client machines.
Advanced Testing & Insights
- Full-Day Analysis: Access and analyze up to 24 hours of throughput graphs and link statistics for in-depth insights.
- Automated Testing: Streamline workflows with a comprehensive command-line interface (CLI) for automated performance testing.
- Protocol Optimization: Test and adjust configurations (e.g., TCP/IP) to enhance network performance.
- SLA Verification: Ensure application stability and responsiveness under challenging network conditions.
- Root Cause Analysis: Differentiate between application and network-related performance issues for targeted solutions.
Specialized Use Cases
- Pre-Deployment Testing: Assess application performance under real-world conditions before rollout.
- Software QA: Test APIs and simulate degraded conditions during cloud migrations or system upgrades.
- VoIP & Video: Ensure acceptable call and video quality by replicating latency, jitter, and packet loss.
- IoT & Edge Networks: Verify performance of IoT devices and edge applications in constrained environments.
Unique Features
- MPLS Identifier: Assign specific MPLS labels or ranges to target traffic for granular testing.
- Frame Size Matching: Analyze traffic by specifying Ethernet frame sizes or ranges for deeper performance insights.
Models and Specifications
Need more details? Here are the specifications for all Netropy Network Emulator models and how they compare.
Specifications | N61 | N91 | 10G1 | 10G2 | 10G4 | 40G | 100G |
---|---|---|---|---|---|---|---|
Capacity | |||||||
Ethernet Ports | 2 x SFP+ 1 Gbps or 2 x RJ45 1 Gbps | 8 x SFP+ 1 Gbps or 8 x RJ45 1 Gbps or 4 x SFP+ & 4 x RJ45 1 Gbps | 2 x SFP+ 1 Gbps/10 Gbps or 2 x RJ45 1 Gbps/10 Gbps | 4 x SFP+ 1 Gbps/10 Gbps | 8 x SFP+ 1 Gbps/10 Gbps | 2 x QSFP+ 40 Gbps | 2 x QSFP28+ 100 Gbps |
Max. Agg. Throughput | 2 Gbps | 8 Gbps | 20 Gbps | 40 Gbps | 80 Gbps | 80 Gbps | 150 Gbps |
Emulation Engines | 1 @ 1 Gbps | 4 @ 1 Gbps | 1 @ 10 Gbps | 2 @ 10 Gbps | 4 @ 10 Gbps | 1 @ 40 Gbps | 1 @ 100 Gbps |
Maximum Packet Rate | 3 million pps | 12 million pps | 29 million pps | 59.5 million pps | 119 million pps | 32 million pps | 32 million pps |
Maximum Frame Size | 9 KB | 9 KB | 9 KB | 9 KB | 9 KB | 9 KB | 9 KB |
Emulation Capabilities | |||||||
Packet Classification | IP source & destination address range (IPv4 or IPv6), VLAN, TCP or UDP port number, IP ToS,
MAC address, MPLS label, or any other packet contents | ||||||
Bandwidth | 100 bps – 100 Gbps in 1 bps increments (depending on model) | ||||||
Delay | 0 ms – 10, 000 ms or greater in each direction in 0.01 ms increments; constant, uniform, normal distributions; replay recorded loss, accumulate & burst | ||||||
Loss & Corruption | Random, burst, periodic, BER, Gilbert-Elliott, or recorded loss; data corruption; network outage | ||||||
Background Utilization | 0 – 100% in increments of 0.1%; PCAP replay | ||||||
Queuing & Prioritization | RED or tail drop queue management; priority or round robin queuing | ||||||
Additional Parameters | Packet Reordering, Packet Duplication, MTU and Fragmentation, Queue Depth, Framing Overhead | ||||||
Interfaces | |||||||
Management | 1 x Gigabit Ethernet, 1 x RS-232 serial console | ||||||
Power Supply | Single | Single | Single | Redundant | Redundant | Redundant | Redundant |
Security | SSL and SSH for secure management; per-user locking of engine configuration | ||||||
Warranty & Support | |||||||
Hardware Warranty | Hardware warranty is included with product license | ||||||
Support & Maintenance | Support is included with product license and software maintenance | ||||||
Ordering Information | |||||||
Part Number | N61-1G | N91-1G | N10G1-10G | N10G2-10G | N10G4-10G | N40G-40G | N100G-100G |
Product License 1-Yr | N61-R1YR | N91-R1YR | N10G1-R1YR | N10G2-R1YR | N10G4-R1YR | N40G-R1YR | N100G-R1YR |
Product License 3-Yr | N61-R3YR | N91-R3YR | N10G1-R3YR | N10G2-R3YR | N10G4-R3YR | N40G-R3YR | N100G-R3YR |
Port Options | N61-SFP | N91-SFP N91-C4S4 | N10G1-SFP | N/A | N/A | N/A | N/A |
Documentation
Read more about what Netropy is capable of and how to use each different model.
Netropy Network Emulator Models
Choose from a range of emulator models to suit your network requirements and budget.
Netropy N61 | Emulates complex networks up to 1 Gbps with two SFP+ or RJ45 1 Gbps ports, ideal for standard network testing needs. |
Netropy N91 | Offers four separate 1 Gbps emulation engines with eight SFP+ or RJ45 1 Gbps ports, supporting concurrent testing or multi-user environments. |
Netropy 10G1 | Emulates links up to 10 Gbps with two SFP+ or RJ45 1/10 Gbps ports, suitable for higher bandwidth applications. |
Netropy 10G2 | Provides two separate 10 Gbps emulation engines with four SFP+ 1/10 Gbps ports, enabling more complex network simulations. |
Netropy 10G4 | Features four separate 10 Gbps emulation engines with eight SFP+ 1/10 Gbps ports, designed for extensive testing scenarios. |
Netropy 100G | Supports emulation at 100 Gbps with two QSFP28 100 Gbps ports, accommodating the most demanding network environments. |
Check out the full specifications of Netropy models here.
The Network Emulator for Real-World Results
Netropy empowers your team to test under real-world conditions with fine-grained precision to predict and troubleshoot problems before they occur.
Whether you’re testing on 5G, SD-WAN, or satellite networks, Netropy’s scalable hardware helps you predict, optimize, and troubleshoot your network performance to prevent bottlenecks and failures. With the Netropy Network Emulator, you can simulate impairments like latency, packet loss, and congestion and deliver deterministic, repeatable results.
Apposite Technologies helps you gain the insights needed to optimize performance and deliver an exceptional user experience every time.
Don’t let performance issues disrupt your plans — use Netropy to anticipate and overcome them.
FAQ
What does a network emulator do?
A network emulator replicates real-world network conditions (e.g., bandwidth limitations, latency, jitter, and packet loss) in a controlled lab environment. This allows organizations to test and evaluate how applications and devices perform under various network scenarios to ensure reliability and optimal user experience (before and after deployment).
What is the difference between a network simulator and a network emulator?
A network simulator models the behavior of a network by using mathematical formulas to predict performance. However, simulators don’t typically use actual hardware or real data traffic.
A network emulator uses real data packets and hardware to mimic the behavior of existing networks. This provides a more accurate and practical assessment of how applications will perform under specific network conditions.
What is the maximum aggregate throughput of Netropy’s Network Emulator?
The maximum aggregate throughput varies by model:
- Netropy N61: Up to 2 Gbps.
- Netropy N91: Up to 8 Gbps.
- Netropy 10G1: Up to 20 Gbps.
- Netropy 10G2: Up to 40 Gbps.
- Netropy 10G4: Up to 80 Gbps.
- Netropy 100G: Up to 150 Gbps.
What kind of networks can I emulate with Netropy?
Netropy can emulate a wide variety of networks, including:
- Wi-Fi: To assess performance over wireless connections.
- Satellite: To simulate high-latency, low-bandwidth conditions, including specific weather events.
- SD-WAN: To test software-defined wide-area networks.
- Ethernet and MPLS: To replicate traditional wired networks.
- 5G and 4G LTE: To test mobile applications.
What’s the difference between the hardware-based Netropy and its virtual/cloud counterparts (NetropyVE and NetropyCE)?
- Netropy (Hardware-Based) provides dedicated hardware appliances for high-performance, precise network emulation. Hardware is ideal for on-premise testing environments.
- NetropyVE (Virtual Edition) is a virtualized version of the hardware emulator that runs on standard servers or virtual machines. This offers flexibility for lab environments without the need for physical hardware.
- NetropyCE (Cloud Edition) is designed for cloud-based testing, allowing users to emulate network conditions within cloud infrastructures. This facilitates the testing of cloud-native applications.
Each version caters to different testing needs and environments, providing scalable solutions for various deployment scenarios.

Network Emulation You Can Trust
Our Netropy network emulator delivers precise, reproducible testing on an affordable appliance to save you time and money. It allows you to isolate and test against varying network conditions from dropped packets to jitter and latency to understand how they affect application performance. You can also throttle bandwidth speeds to identify how much bandwidth an application needs, which can prevent over-purchasing bandwidth.
You get reliable, flexible network emulation with a modern, intuitive user interface that’s easy to use and requires no special training to set up. Netropy is a purpose-built appliance designed specifically for your needs. It allows you to observe, test and validate performance and end-user experience in real-time. You can emulate network delay and other real-world challenges simply and easily. As a hardware-based solution, Netropy can emulate up to 30 separate WAN links quickly and effortlessly.
Discover Reliable Network Emulation With Netropy
Looking for a network testing solution you can trust? Netropy provides a better network emulator with a modern, intuitive user interface. Set up precise, repeatable testing environments based on real-world data, hardware, and conditions to test applications at all stages.
Netropy saves you time and money by providing accurate insights at an affordable price. That way, you can optimize your application performance and maximize your return on your testing investments.
Get reliable, flexible network emulation with a modern, intuitive user interface that’s easy to use — with no special training to set up. Contact us or download the datasheet to learn more.
Looking for WAN emulator software? Consider NetropyVE or NetropyCE, our virtual- and cloud-based solutions, which deliver the same robust testing experience without a physical appliance.