The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2003
Filed:
Apr. 15, 1999
Thomas Joseph Prorock, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A Fast Ethernet LAN hub may include a plurality of 100 Mbps ports, each dedicated to a single station or shared with a high speed Ethernet segment. The ports on the Fast Ethernet hub are connected to a low speed 10 Mbps LAN segment through a high speed LAN/low speed LAN bridge port. Because of the mismatch in data transmission rates, the LAN bridge may experience congestion as a result of data flow at the high speed/low speed interface. To minimize the impact on high speed ports, a congestion control system responds to a congested state by identifying 100 Mbps ports currently actively communicating with remote stations through the 10 Mbps port. Any 100 Mbps port identified as supporting a current connection to a network management station is excluded from the set of identified ports. The identified ports are temporarily prevented from sending or receiving data. Other 100 Mbps ports on the hub remain unaffected by the congestion control action.