packet switch A device that switches data organized into packets, discrete sets of data that may take the specific form of packets, frames, or cells depending on the network technology specifics. For example, packet switches switch packets in networks based on the Internet Protocol (IP), frames in networks based on the Frame Relay or Ethernet protocol, and cells in those based on the Asynchronous Transfer Mode 74570c16.qxd 9/11/07 12:27 PM Page 359 |