Management data is selectively supplied to a management agent by a network switch using either a media access control (MAC) layer interface or PCI bus interface to provide maximum flexibility for the management agent. The management data includes management packets having at least a portion of a received...http://www.google.de/patents/US6157623?utm_source=gb-gplus-sharePatent US6157623 - Apparatus and method for selectively outputting data using a MAC layer interface or a PCI bus interface
