Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-11-29
2005-11-29
Ho, Duc (Department: 2665)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S412000, C370S466000
Reexamination Certificate
active
06970468
ABSTRACT:
A multiported LAN switch comprised of legacy local area network ports and ATM ports. Each ATM port comprising a hardware forwarding engine for bridging LAN frames from the LAN ports to the ATM port. The hardware forwarding engine converts layer 2 protocols between the dissimilar ports expediently, without requiring intervention by a microprocessor. A substantial performance gain is attained compared to microprocessor controlled format converters. Both LAN emulation and virtual LANs are supported.
REFERENCES:
patent: 5313454 (1994-05-01), Bustini et al.
patent: 6542896 (2003-04-01), Gruenwald
Doidge Dennis Albert
Ervin Jim P.
Henderson Douglas Ray
Ku Edward Hau-chun
Patel Pramod Narottambhai
Ho Duc
International Business Machines - Corporation
Ray-Yarletts Jeanine S.
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