The Spirent CKL-2U (ANUE) is a 2U rackmount network testing appliance that combines traffic generation, protocol emulation, and network analysis for validating infrastructure performance and reliability. Operating across 10 Mbps to 10 Gbps Ethernet at line rate independent of packet size, it delivers any-port-to-any-port traffic flows while emulating real-world network conditions including delays, impairments, packet loss, and reordering.
Technical Specifications
Traffic & Performance
• Line rate support: 10 Mbps through 10 Gbps Ethernet
• Dual-rate 10GbE ports: operate at 10GbE or 1GbE
• Multi-rate 25GbE ports: support 25GbE, 10GbE, and 1GbE operation
• Packet classification depth: up to 2000 bytes with bit-wise filtering
• Impairment rate range: 100% down to 3.73e-9
Network Emulation
• Virtual Router simulation with multi-hop WAN network emulation
• OSPF support for complex topology simulation
• Multiple network clouds per interface with independent path and CoS parameters
• Classification by VLAN tags, MPLS labels, MAC/IP addresses (IPv4, IPv6), TCP/UDP ports
• Bandwidth control with accumulate & burst features
Impairment Capabilities
• Delay and impairment emulation: fixed and random distributions (periodic, Poisson, uniform, Gaussian)
• Packet/frame drop and reordering within 255 packets
• CRC corruption
• Dynamic routing with DHCP or static IP assignment
Interface Options
• 10/100/1000 Base-T Ethernet
• Optical GE interfaces
• 10 Gbps Ethernet with optical and Copper CX4
• M Series V2 modules (M1 “Maui” supporting up to 2.6 Gbps)
• H Series modules (cPCI Ethernet Network Emulator)
• GEM and XGEM network emulator module support
– Key Features
• Any-port-to-any-port traffic routing without port restrictions
• Protocol emulation across multiple network standards
• Independent line-rate performance regardless of packet size
• Automatic and manual routing table configuration
– Typical Applications
• Network infrastructure validation and performance testing
• Application and service conformance testing
• WAN network condition simulation
• Multi-hop network topology emulation
• Network impairment and degradation testing
– Compatibility & Integration
The CKL-2U accommodates M Series V2, H Series, GEM, and XGEM modules, supporting mixed Ethernet rates from 1 Gbps to 25 Gbps within a single chassis.

















