In this expanded view of an input port we see a larger version of the three boxes from the previous figure. The first box, on the left, is slightly smaller than the other two, and is labeled "Line termination." The middle box is labeled "Data link processing (protocol, decapsulation)." The third box is labeled "Lookup, forwarding, queuing," and includes a queue of data packets. Blue arrows point from left to right between each box, and point ultimately towards a box labeled "Switch fabric."