A concentrator multiplexes network data from different links in a network
and carried on a plurality of lower speed lines into multiplexed network
data carried on a higher speed line. A line interface module
demultiplexes the multiplexed network data carried on the higher speed
line, assembles the demultiplexed network data into cells, and
reassembles cells into packets for analysis. A single distributed network
analyzer analyzes the reassembled network data.