The Spirent XLW3720A is a 10 Gigabit Ethernet XENPAK MSA module engineered for cost-effective development and testing of 10 GbE hardware and firmware. This dual-slot module integrates directly into Spirent SmartBits chassis platforms to deliver Layer-2 WAN and LAN protocol testing for network infrastructure spanning data centers and large-scale deployments. It supports automated performance validation of network switches, switch routers, and interconnection devices across multiple technology domains.
Technical Specifications
• Module Type: XENPAK MSA Module
• Ports: 2 slots
• Data Rate: 10.3125 Gbps (LAN) / 9.58464 Gbps (WAN)
• Transmit Streams: Up to 512 independent streams
• Receive Streams: Up to 64,000 streams
• Frame Size: 42 to 16,384 bytes
• Optical Wavelengths: 850 nm, 1310 nm, 1550 nm
• Fiber Support: Single-mode and multi-mode optical fiber
• Supported Technologies: 10/100/1000 Mbps Ethernet, Fiber Channel, ATM, Frame Relay (with integrated SmartBits modules)
– Key Features
• Dual-port architecture for parallel or redundant testing scenarios
• High stream density: 512 transmit and 64,000 receive streams enable granular traffic modeling
• Wide frame size range accommodates standard packets through jumbo frame validation
• Triple-wavelength optical compatibility for diverse fiber plant deployments
• Windows OS integration for test automation and reporting
– Typical Applications
• 10 GbE hardware and firmware validation
• Data center interconnect and network fabric testing
• Layer-2/Layer-3 switch and switch router performance characterization
• Multi-protocol device testing (Ethernet, Fiber Channel, ATM, Frame Relay)
• Automated performance testing in production QA workflows
– Compatibility & Integration
The XLW3720A operates within Spirent SmartBits SMB-600B and SMB-6000C chassis. Windows OS compatibility enables integration with SmartBits control software. When combined with other SmartBits modules, the platform extends testing coverage across legacy and contemporary WAN/LAN protocols.















