Brocade Fabric OS Command Reference Guide v6.1.0 (53-1000599-02, June 2008)

172 Fabric OS Command Reference
53-1000599-02
fcrPathTest
2
fcrPathTest
Tests the data path connection between the FC Router FPGA and the central ASIC.
Synopsis fcrpathtest [--slot slotnumber][-unit number][-path mode][-nframes count]
Description Use this command to verify the data path connecting the FC Router field-programmable gate array
(FPGA) and the central ASIC by sending frames from the FC Router FPGA port N’s transmitter, and
looping the frames back into the same port N’s receiver. The loopback is accomplished at the
parallel loopback path. The path exercised in this test does not include the media nor the fibre
cable.
Only one frame is transmitted and received at any one time. An external cable is not required to run
this test. The port LEDs flicker green rapidly while the test is running.
The test method is as follows:
1. Set all ports present for parallel loopback.
2. Create a frame F of maximum data size (2,112 bytes).
3. Transmit frame F by way of the FC Router FPGA port N.
4. Pick up the frame from the same port N.
5. Check if any of the eight statistic error counters are nonzero:
- ENC_in
- CRC_err
- TruncFrm
- FrmTooLong
- BadEOF
- Enc_out
- BadOrdSet
- DropRxUnavail
6. Check if the transmit, receive, or Class 3 receiver counters are stuck at some value.
7. Check if the number of frames transmitted is not equal to the number of frames received.
8. Repeat steps 2 through 7 for all ports present until one of the following conditions is met:
a. The number of frames (or passCount) requested is reached.
b. All ports are marked bad.
At each pass, a different data type is used to create the frame from a palette of seven; if a pass of
seven is requested, seven different frames are used in the test. If eight passes, the first seven
frames are unique and the eighth is the same as the first pass.
The data palette of seven includes:
CSPAT 0x7e, 0x7e, 0x7e, 0x7e, ...
BYTE_LFSR0x69, 0x01, 0x02, 0x05, ...
CHALF_SQ0x4a, 0x4a, 0x4a, 0x4a, ...
QUAD_NOT0x00, 0xff, 0x00, 0xff, ...
CQTR_SQ0x78, 0x78, 0x78, 0x78, ...
CRPAT 0xbc, 0xbc, 0x23, 0x47, ...