The Spirent LAN3111A is a network impairment emulator module engineered for integration with Spirent SmartBits chassis. This 6-port module emulates real-world network conditions including latency, jitter, packet loss, and bandwidth constraints, enabling controlled laboratory validation of network device and application performance under adverse scenarios.
Technical Specifications
• Module Type: Network Impairment Emulator
• Form Factor: SmartMetrics Minimodule
• Port Count: 6 ports per module
• Interface: 10/100 Mbps Ethernet with RJ-45 connectors
• Duplex Modes: Full Duplex, Half Duplex
• Line Rate: 10 Mbps or 100 Mbps (user-controlled or auto-negotiate)
• Transmit Rate: Full-line rate at 10/100 Mbps
• Streams per Port: Up to 1,000 streams
• Single Burst Capacity: Up to 4 billion packets per burst
• Multi-Burst Transmission: Up to 4 billion repetitive bursts with programmable inter-burst delay
• Flow Simulation: Up to 64,000 flows per stream via IP source or destination address variation
• Capture Buffer: 6,500 frames
• Captured Frame Size Range: 18 to 2,006 bytes
• Capture Mode: Full line-rate capture and analysis
• Frame Selection: Entire frame only
– Key Features
• Stream-based transmission architecture supporting multiple concurrent traffic profiles
• Per-port flow multiplexing enables complex, multi-flow network impairment scenarios
• Full-line rate capture with substantial on-module buffering for post-test analysis
• Programmable duplex operation accommodates both symmetric and asymmetric test topologies
– Typical Applications
The LAN3111A addresses validation requirements across network infrastructure testing, application performance characterization under degraded link conditions, and protocol robustness verification in controlled impairment environments.
– Compatibility & Integration
Designed exclusively for Spirent SMB-600 and SMB-6000B chassis platforms.

















