VeEX MTX150 Series, Руководство пользователя

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Traffic Distribution Details - Frames
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RX (Received) Frames
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Total : Total number of frames received
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Test : Number of test frames received
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Non-Test: Number of non-test frames received
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TX (Transmitted) Frames
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Total: Number of test frames transmitted
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Flow Control: Flow control is the FC-2 control process to pace the flow of frames between Nx_
Ports, an Nx_Port and the Fabric and within the Fabric to prevent overrun at the receiver.
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Flow control is managed between Nx_Ports (end-to-end) and between FC_Ports (buffer-to-buf-
fer). Flow control management has variations dependent upon the service class, however
Class 3 uses only buffer-to-buffer flow control.
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RR-RDY: For Class 3 frames transmitted and received, a R_RDY is issued when a receive buffer is
available.
Memory or “buffers” to temporarily store frames as they arrive and until they are assembled in
sequence, and delivered to the upper layer protocol. Buffer Credits are the number of frames a
port can store. To track the number of frames transmitted for which R_RDY responses are out-
standing, the transmitting FC_Port uses the BB_Credit_CNT.
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BB Credits Used : The number of unacknowledged or outstanding frames awaiting R_RDY
responses from the directly attached FC_Port.
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BB Credits Available : The number of frames transmitted and received R_RDY responses from the
directly attached FC_Port.