A multiport bridge includes a plurality of Bridge Port Frame Handler (BPFH) units coupled through a Source Routing bus and a Transparent Bridge Bus to a microcontroller, a Packet Memory and a Transparent Bridge Control Management System (TBCMS). Each Bridge Port Frame Handler unit receives Frames from...http://www.google.com/patents/US5448565?utm_source=gb-gplus-sharePatent US5448565 - Multiport LAN bridge
