Method and apparatus for performing cut-through virtual circuit merging
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United States of America Patent
Stats
-
May 15, 2001
Grant Date -
N/A
app pub date -
Nov 24, 1997
filing date -
Nov 24, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for performing virtual connection merging in an output port of a network switch are disclosed. In the event no completely assembled packets have been received and scheduled for transmission, a partially received packet is selected for cut-through transmission prior to receipt of all cells comprising the packet. Transmission of the selected packet is initiated and a timer is started. If the timer expires prior to the receipt of an end of packet indication for the packet for which transmission has commenced, and end of packet signal is generated and transmitted and the transmission of additional cells for the cut-through packet is aborted. In this manner, delays associated with packet reassembly may be avoided and buffer sizes of reassembly buffers may be reduced.
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