WAN EmulatorChaosBridge

11 Link Impairments · Up to 4096 Virtual Links · 1G–400G

Combine delay, loss, jitter and bandwidth variation on real application traffic to reproduce complex networks for controlled, repeatable tests.

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NetAccura WE-101 N4G four-port Gigabit WAN emulator and ChaosBridge management interface
WE-101 N4G · Four-Port Gigabit WAN Emulator ChaosBridge Management Interface

Turn Hard-to-Reproduce Problems into Repeatable Tests

Turn unpredictable field networks into configurable test conditions. Validate service performance and recovery under the same conditions.

Mobile communications, low Earth orbit satellite and data center network testing scenarios

Impaired Mobile Networks

Bandwidth Variation · Burst Loss · Brief Outages

Check media stalls, endpoint reconnection and service recovery.

Satellite Links

Long Delay · Delay Variation · Link Handover

Validate protocol timeouts, transmission efficiency and post-handover recovery.

Cross-Region Connectivity

Asymmetric Delay · Bandwidth Bottlenecks · Background Traffic

Compare data synchronization, remote access and cross-site service performance.

11 Link Impairments, Freely Combined

Configure both directions independently and combine multiple impairments.

Delay
Fixed Delay, Delay Distributions and Custom Sequences
Example: Fixed 50 ms delay
100500 ms
0 s10 s20 s30 s
Jitter
Fixed, Uniform and Normal Distributions
Example: ±20 ms jitter added to 50 ms delay
705030 ms
0 s10 s20 s30 s
Bandwidth Limiting
Constant Rate Limiting, Burst Control and Dynamic Bandwidth
Example: Dynamic bandwidth at 100 → 20 → 100 Mbps
10020 Mbps
0 s10 s20 s30 s
Packet Loss
Random, Burst, Periodic and Gilbert–Elliott Modes
Example: Packet 03 never arrives
Reordering
Change packet arrival order to test reordering handling
Example: Packet 02 arrives after 03
Packet Duplication
Generate duplicates by probability to test deduplication
Example: An extra copy of packet 03 arrives
Queue Control
Tail Drop and RED to emulate queues and congestion
Tail Drop example: New packets are dropped when the queue is full
Background Traffic
Generate background packets or replay PCAP to reproduce bandwidth contention
Example: Application and background traffic share bandwidth
Application Traffic Background Traffic
Packet Modification
Byte matching and replacement with checksum recalculation
Example: Replace packet bytes
A1 B2 C3A1 FF C3
Bit Errors
Flip bits randomly, by packet or within specified ranges
Example: Flip the final bit
1010 11001010 1101
MTU Fragmentation
Fragment IPv4 packets to the configured MTU
Example: Split one datagram into multiple fragments
IPv4 Datagram Fragment 1 Fragment 2
View Full Specifications
Multi-link laboratory test environment built around a NetAccura WAN emulator

One Appliance, Multiple Network Conditions

Up to 4096 Virtual Links Validate Each Service Independently

Apply different conditions to video, control signaling and data synchronization to test multiple services in one environment.

  • Classify Traffic by IP, Port, Protocol and Application Characteristics
  • Independent Bidirectional Settings for Every Link
  • Multiple Ports and Engines for Different Test Scales

Orchestrate network changes into scenarios.
Configure Once, Test Repeatedly

Set delay, loss and bandwidth changes by stage, save the scenario and run it again. Compare versions under identical network conditions.

Example Scenario Configuration One Timeline · Three Parameters Changing Together

Swipe to view the full timeline

A shared 130-second scenario timeline for delay, loss rate and bandwidth 0–30 seconds: 20 ms, 0% loss, 100 Mbps. 30–60 seconds: 120 ms, 1% loss, 100 Mbps. 60–90 seconds: 120 ms, 5% loss, 20 Mbps. 90–100 seconds: 100% loss to emulate an outage, with other settings unchanged. 100–130 seconds: restore the initial configuration. Stable ConnectionIncreased DelayWorsening Network ConditionsOutageRecoveryLatencyms2012012012020Packet Loss Rate%0151000BandwidthMbps10010020201000 s30 s60 s90 s100 s130 s

Stage durations and parameters for each direction are configurable. The illustration uses 100% loss for a 10-second outage, then restores the initial conditions.

Multi-Point Capture and Analysis Track packet changes before and after impairments. Export captures and review them alongside application logs.

Standard RESTful API

Automate control
in your preferred language

No Dedicated API SDK Required

Configure links, run scenarios and read statistics over HTTP + JSON to integrate with existing automated tests.

View API Examples and Scripts
Connect Your Code Directly to the Device
PythonJavaJavaScriptC#GoC++
HTTP + JSON
GET/api/v1/engines

Discover Device Capabilities

PATCH/api/v1/virtual-links/{id}

Set Link Parameters

GET/api/v1/stats/virtual-links

Read Test Statistics

Configure Conditions Run Tests Get Results

Expert Support, Fast Delivery

Technical advisers help troubleshoot issues and write automation scripts. Automated validation supports delivery of custom requests as quickly as the same day.

Talk to a Technical Adviser Discuss Custom Development

CAICT TAIER Laboratories Also Chose NetAccura WAN Emulators

Protocol Faults and
Man-in-the-Middle Emulation

Validate fault tolerance under protocol errors and complex interactions.

DNS / HTTP

Service Faults

No response, delays and status-code rewriting to test timeouts and retries.

TLS / TCP

Connection Faults

Handshake delays, interruptions and connection failures to test reconnection and recovery.

PCAP Interaction

Multi-Step Packet Interactions

Advance packet sequences based on response conditions to validate interactions and state handling.

From Multi-Service Emulation to Precision Testing

Standard Models and Port Configurations

Choose emulation capabilities and delay requirements first, then select port speeds and counts.

View Product Resources
NetAccura N60G rackmount WAN emulator and WE-101 N4G WAN emulator
N60G · 6 × 10G Optical / WE-101 N4G · 4 × 1G Copper

Multifunction Series

10 μs Delay Control Resolution

11 link impairments, traffic classification, scenario replay and packet capture analysis.

1G / 10G / 100G Models

FPGA Precision Series

±10 ns Delay Control Accuracy

1 ns resolution with line-rate processing, packet modification and brief link outages.

10GLR / 100GLR Models

400G High-Bandwidth Configuration

2 × 400G Test Ports

Two independent single-port adapters deliver 400 Gbps line-rate processing with 512-byte packets.

Discuss 400G Selection

Multifunction Series

0–10 s Delay Range · 10 μs Delay Resolution · Up to 4096 Virtual Links

Swipe to view ports, enclosures and datasheets

NetAccura multifunction WAN emulator models, per-port speeds, test ports, bidirectional physical links and enclosures
Standard ModelPer-Port SpeedTest PortsBidirectional Physical LinksEnclosureDatasheet
WE-101 N2G1G2 × RJ45 Copper Ports1 Pair1UPDF(Chinese)
WE-101 N4G1G4 × RJ45 Copper Ports2 Pairs1UPDF(Chinese)
N6G1G6 × RJ45 Copper Ports3 Pairs2UPDF(Chinese)
N24G1G24 × RJ45 Copper Ports12 Pairs2UPDF(Chinese)
N60G10G6 × SFP+ Optical Ports3 Pairs2UPDF(Chinese)
N240G10G24 × SFP+ Optical Ports12 Pairs2UPDF(Chinese)
N100G100G2 × 100G Optical Ports1 Pair2UPDF(Chinese)
N200G100G4 × 100G Optical Ports2 Pairs2UPDF(Chinese)

Every two test ports form one bidirectional physical link. Virtual links apply different network conditions to individual traffic flows.

FPGA Precision Series

Supports delay, bandwidth, loss, duplication, reordering, bit errors, packet modification and brief link outages.

1 ns Delay Control Resolution Delay Accuracy ±10 ns

Need Multiple 25G Ports?

Choose 2–26 25G ports to match the link count in your lab.

Discuss Your Configuration

Multifunction Series Specifications

For WE-101 and N-series multifunction models in the model table. View FPGA Precision Series Specifications →

Impairment Configuration
Scale and Integration
Impairment Types11 types: delay, loss, jitter, bandwidth limiting, reordering, duplication, modification, bit errors, queue control, MTU fragmentation and background traffic
Advanced Testing CapabilitiesProtocol fault injection / active PCAP interaction / scenario replay / multi-point capture and online analysis, depending on engine, license and runtime configuration
Core ArchitectureIn-house line-rate processing + 15-stage pipeline + live configuration updates
Port Speed1G / 10G / 100G; port counts vary by model
Delay Range0 - 10,000 ms, independently per direction
Delay Control Resolution10 μs（0.01 ms）
Delay Modes (6)Fixed / Uniform Distribution / Normal Distribution / Exponential Distribution / Burst / Custom Sequence
Loss ModesRandom / fixed ratio / periodic / burst / Gilbert-Elliott Markov
Bandwidth Modes (3)Leaky Bucket / Token Bucket / Dynamic Bandwidth
Jitter ModesFixed / Uniform / Normal
Bit Error ModesRandom bit errors (BER) / per-packet (1–32 bits) / specified range
Queue AlgorithmsTail Drop / RED, configurable by packet count or bytes
Background TrafficGenerated traffic / PCAP replay with speed scaling, loops and preserved timing
Filtering and Traffic ClassificationMAC/VLAN/IPv4/IPv6/TCP/UDP/SCTP/DNS/domain/GTP/SIP/NGAP-NAS/ESP/App ID/custom offset
QoS ClassificationDSCP / VLAN PCP / IP / Port / Protocol / GTP QFI, with shared rate and scheduling
Virtual LinksUp to 4,096, each with independent bidirectional settings; capacity depends on model and license
Capture AnalysisMulti-point capture / protocol decoding / impairment and drop evidence / microburst analysis / PCAP, PCAPNG and CSV export
Scenario ReplayTimed steps / bidirectional settings / loop replay / JSON import/export / official and user templates
Management and AutomationWeb GUI / REST API / Bearer Token / engine-scoped API

Get Product Resources Directly

01 / MODEL INFORMATION

Product Datasheets (Chinese)

10 PDFs covering WE-101, N-series and FPGA Precision models.

Open Datasheets by Model
02 / QUICK START

Run Your First Impairment Test

Learn the complete workflow, from connecting the device and configuring links to validating results.

Read the Quick-Start Guide

Need a full user manual or scripts tailored to your test scenario?

Contact a Technical Adviser