NISTnet is network emulation software for Linux that allows a Linux server running as a router to emulate a variety of network conditions, such as congestion loss, packet reordering, or asymmetric bandwidth conditions. NISTnet is also a kernel module extension for Linux and has an X- based user interface. This application note explains NISTnet software and how to install it. Users are instructed in configuring network interface cards to operate as a router, and in configuring TDMoP products for NISTnet. The note also demonstrates how to use NISTnet with several TDMoP chips with and without Integrated SCTs.