The Spirent AT9155 is an ATM network test appliance delivering full-duplex, full wire-rate traffic generation and protocol emulation for comprehensive validation of ATM infrastructure and interworking. Part of the SmartBits family, it generates and monitors ATM network traffic with frame-level testing capability at full cell rate, supporting switch and edge device testing with high-rate signaling.
Technical Specifications
Interface & Configuration
• ATM OC-3/STM-1 interface
• Single port design
• Multimode and single-mode fiber media options
Virtual Circuits & Signaling
• Supports up to 2,048 PVCs and SVCs per port
• Generates up to 8.38 million VCCs per port (335.54 million across 40-port suite)
• Up to 800 calls per second per port in Smart Signaling; 32,000 calls per second across 40-port ATM test suite
Protocol & Session Support
• PPP testing: up to 2,048 sessions
• LANE testing: up to 64 LECs
• ILMI, UNI 3.x, LLC/SNAP (RFC 1483), Classical IP (RFC 1577), PPP (RFCs 1661, 2364)
Performance Analysis
• Measures SVC peak call rate and setup latencies
• End-to-end performance analysis for xDSL networks
• Tests throughput, packet loss rate, back-to-back performance, and latency
Error Generation & Monitoring
• Generates packets with fixed or variable length, gap, and contents including all possible errors
• Monitors packet counts, rates, errors, and supports trigger-based actions
– Key Features
• Full wire-rate frame-level testing at full duplex
• Full-cell rate switch testing capability
• ATM-to-LAN and LAN-to-ATM interworking validation
• Model variants: AT-9155, AT-9155C, AT-9155Cs
– Typical Applications
• ATM switch and router performance validation
• xDSL network end-to-end testing
• Virtual circuit and signaling performance assessment
• Edge device high-rate signaling validation
– Compatibility & Integration
Operate with Spirent SmartApplications for test configuration. SmartLib Programming Library enables custom application development in Visual Basic or C/C++.
