Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Command Reference Manual page 674

2
spinSilk
The partner port N eventually sends four similar frames, as follows:
2112 bytes of BYTE_LFSR
928 bytes of CSPAT
200 bytes of RANDOM
480 bytes of RDRAM_PAT
Periodically check the following:
No port has died.
Each port's frames-transmitted counter is still incrementing.
Each port's statistic error counters is nonzero—ENC_in, CRC_err, TruncFrm, FrmTooLong, BadEOF,
Enc_out, BadOrdSet, DiscC3—until one of the following is met:
The number of million frames requested per port is met.
All ports are eventually marked bad.
You send a keyboard (or button) interrupt to abort.
The data is not read and checked, as with the portLoopbackTest command. There is no CPU
intervention besides the periodic checks of the hardware counters.
An example of the data used is as follows:
Because this test includes the media and the fiber cable in its test path, its results, combined with
the results of portLoopbackTest and spinSilk, can be used to determine which components of the
switch are faulty.
The execution of this command is subject to Admin Domain restrictions that may be in place.
Operands This command has the following operands:
-nmegs count
-lb_mode mode
1
2
3
5
642
CSPAT: 0x7e, 0x7e, 0x7e, 0x7e, ...
BYTE_LFSR: 0x69, 0x01, 0x02, 0x05, ...
RANDOM: 0x25, 0x7f, 0x6e, 0x9a, ...
RDRAM_PAT: 0xff, 0x00, 0xff, 0x00, ...
Specify the number of million frames to send. The test will progress until the
specified number of frames has been transmitted on each port. The test
result might display that more frames have been transmitted on some ports,
but not less. The default value is 10, so the number of frames sent will be at
least 10 million.
Specify the loopback point for the test. By default, spinSilk uses loopback
plugs as described earlier; however, for debugging purposes, you can select
other loopback modes, as follows:
Port loopback (loopback plugs)
External (SERDES) loopback
Silkscreen loopback
Internal (parallel) loopback
Fabric OS Command Reference Manual
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