Quagga is a terrifically useful tool when you need to build a BGP test lab. Not only can you quickly add an extra BGP router in your network; it also allows you to insert BGP routes with almost any attribute you want. I’ve described some of its features and included a sample Quagga-to-router connectivity scenario in the “Use Quagga to generate BGP routes” article published in the CT3 wiki.
Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.