Pause frame reconciliation in end-to-end and local flow control for ethernet over sonet
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United States of America Patent
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Issued Date -
Feb 23, 2006
app pub date -
Aug 23, 2004
filing date -
Aug 23, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Whenever a PAUSE frame is generated locally, a pause refresh timer is set with the pause parameter from the PAUSE frame. PAUSE frames which are received from a remote data sink are trapped and the value of the pause parameter is evaluated. If the value is smaller than the current pause refresh timer value, the pause frame is discarded. If the value is equal to or larger than the current pause refresh timer value, the PAUSE frame is passed on to the data source and an end-to-end flow control (EEFC) timer is set with the pause parameter received from the remote data sink. While the EEFC timer is counting down, locally generated PAUSE frames having a pause parameter less than the timer value are suppressed.
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