VeEX VePAL TX300M, User Manual

Page: 383 / 421

Only available when PSP is enabled
Initializes the Fibre Channel link and manages various states, including link failure, loss of synchronization, loss of signal,
or protocol violations
B-to-B (Tx): Buffer to Buffer:
Valid settings are in the range from 1 to 65535.
Number of local port frame buffers are available to receive frames from another port
Determines how many frames can be sent before receiving R_RDY acknowledgements.
“Credits”, or the number of frames, are negotiated between the n_ports and f_ports at the time of login
Both ports on the link exchange values of how many frames they are willing to receive at a time from the other port. This
value becomes the other port's BB_Credit value and remains constant as long as the ports are logged in.
Each port also keeps track of BB_Credit_CNT.
Transmitter: For each frame transmitted, BB_Credit_CNT is incremented by 1.
Receiver: The value is decremented by 1 for each R_RDY Primitive Signal received from the other port.
Go back to top Go back to TOC
Fiber Channel - Measurement Setup
Mode
: Manual or Timed
Manual:
Measurement is started (by the User) by pressing the
Start
button and ended when pressing the
Stop
button
Timed:
Measurement duration can be programmed in seconds, minutes, hours or days
Go back to top Go back to TOC
16.2 BERT/Throughput
16.2.1 Overview
The TX300/e complies with ANSI NCITS FC-FS recommendations and has the ability to test 1, 2, 4, 8 and 10 Gigabit Fibre Channel.
1/2/4/8G Fiber Channel: The unit verifies the 8B/10B PCS Layer with a basic primitive set at FC-1 or FC-2 lower layers.
10G Fiber Channel: The unit verifies the 64B/66B PCS Layer with a basic primitive set at FC-1 or FC-2 lower layers.
FC-1 Layer addresses the transmission protocol encoding, decoding, and special characters used for protocol
management
FC-2 is the signaling protocol layer, which is made up of a framing protocol and a flow control process
The unit supports the generation and monitoring of: bit errors, order sets, frame delimiters, frame transmission, and generation of
primitive sequences. BERT diagnostics perform a bit-by-bit comparison to find bit errors in the received data pattern. Error Count and
Error Rate for the latest sample are displayed and maintained, as well as totals for all samples from the test start.
The user can use a default frame header or define a custom frame header - the unit takes care of the frame/header setup, creates the
user defined SOF and EOF delimiters and calculates the CRC error checking bytes, which are placed within the frame. User defined
bytes, fixed patterns or industry standard PRBS patterns can be selected from drop-down menus and radio buttons and inserted into
the payload field.
Testing is supplemented with the capability to perform Bit and CRC error insertion. These tests allow users to test their own Mux
TX300S_e-manual_D07-00-064P_RevA00