Naima Dimbil attended ISOC chapter training and wrote very informative article. Here is the introduction of here article ‘ ..The internet as we know it is the exchange of information in a process known as routing between multiple distinct autonomous systems (an autonomous system (AS) is the basic unit of network operations and routing policy), these autonomous systems announce/ exchange their prefixes (which are blocks of contiguous IP addresses. E.g., the notation /16 represents all the IP addresses starting with 128.100, a 16-bit prefix). The exchange of information or routing between different autonomous systems is accomplished by using the Border Gateway Protocol (BGP), BGP structures the way autonomous systems communicate information about how to reach IP prefixes….’ To read the whole article click on the pdf or  word version. Thanks Naima for sharing this us.