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Environment/Versions  Attero-V (Attero Virtual) Answer The Attero-V application and images can be downloaded from the Spirent CSC website. After the VM is created go to the Attero console and setup the IP address, gateway, and subnet mask. Also set the MAC addresses of the vSwitches to the test ports. STATUS will show the IP address and port number of the unit if the probe is able to start up Don't forget the address of the license server starts with an @ sign. Example: @1.1.1.1 Attero-V uses the same licensing mechanism as STCv A Virtual license controller is required. The flex-id of the license controller is needed to create a license. The Attero-V license goes into the same location as the STCv port license. Throughput and accuracy are dependent on the pool of resources of the underlying PC hardware. An idea of what you might achieve….. If you want to filter a stream of traffic and apply only delay, then it’s possible you may achieve 500ms delay (with 1ms accuracy) at a low bandwidth utilization (say 100Mb/s) for packets of 512Byte size.   If you want to do more filtering, add more delay or other impairments, work at a higher bandwidth or pass smaller packet sizes then the throughput achievable will reduce.   Note that this is just an indication of what you may achieve, but it will depend on your application and the hypervisor/PC performance/configuration etc. Installing the Attero application on the PC will automatically indicate a Visual C++ install. Note that this is a 32 bit library. It will not work with a 64 bit library.