Asynchronous transfer mode switching device
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United States of America Patent
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Dec 10, 1996
Grant Date -
N/A
app pub date -
Sep 28, 1994
filing date -
Sep 30, 1993
priority date (Note) -
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Abstract
An ATM switching device includes at least one ATM switch element, and a unit for appending a routing tag, which is composed of a single byte or a plurality of bytes and related to an incoming ATM cell, to the head of the ATM cell. The routing tag includes a control information having information concerning a priority level of the ATM cell and a discard level thereof, and includes a routing information defining a single address or a plurality of addresses. The ATM switch element effects a priority control for the ATM cell, and a discard control of an ATM cell or ATM cells depending on a storage quantity of a congestion control memory buffer, according to the control information, and effects a switching of the ATM cell according to an address value or address values defined in the routing information. By the constitution, it is possible to realize a speedy and simple switching of an ATM cell or ATM cells.
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