Forwarding Information Base (FIB)

A Forwarding Information Base (FIB) is a specialized table used by networking devices, like routers, to efficiently direct data packets to their destination. It contains a list of network addresses and the corresponding next steps or paths to reach those addresses. When data arrives, the router quickly consults the FIB to determine the best route, ensuring fast and accurate delivery. Think of it as a highly organized directory or map that guides data traffic through a network, helping devices communicate smoothly and efficiently.