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4-6
Compaq StorageWorks SAN Switch 8 Installation and Hardware Guide
Compaq Confidential – Need to Know Required
Writer: Hilary Stead Project: Compaq StorageWorks SAN Switch 8 Installation and Hardware Guide Comments:
Part Number: EK-BCP24-IA / 161355-001 File Name: E-CH4 DIAGNOSTICS.DOC Last Saved On: 9/30/99 10:27 AM
portLoopbackTest
Figure 4-6 shows the
portLoopbackTest
command, which verifies the intended
functional operation of the switch by sending frames from each port’s
transmitter back to the same port’s receiver through an internal hardware
loopback. This command tests the switch circuitry up to the serial output of the
ASIC. The command syntax is
portLoopbackTest nFrames.
IMPORTANT:
This test cannot be executed on an operational switch. Before issuing the
portLoopbackTest command, disable the switch using the switchDisable
command.
If you do not include the
nFrames
parameter, the loopback test runs
continuously until you press Enter.
switch:admin> portLoopbackTest
Running Port Loopback Test ....
Diags: (Q)uit, (C)ontinue, (S)tats, (L)og: s
Diagnostics Status: Sun Jan 1 00:00:00 2000
port#:
0
1
2
3
4
5
6
7
diags:
OK
OK
OK
OK
OK
OK
OK
OK
state:
UP
UP
UP
UP
UP
UP
UP
UP
lm0:
4654 frTx
4654 frRx
0 LLI_errs.
lm1:
4654 frTx
4654 frRx
0 LLI_errs.
lm2:
4654 frTx
4654 frRx
0 LLI_errs.
lm3:
4654 frTx
4654 frRx
0 LLI_errs.
lm4:
4654 frTx
4654 frRx
0 LLI_errs.
lm5:
4654 frTx
4654 frRx
0 LLI_errs.
lm6:
4654 frTx
4654 frRx
0 LLI_errs.
lm7:
4654 frTx
4654 frRx
0 LLI_errs.
Central Memory OK
Total Diag Frames Tx: 38032
Total Diag Frames Rx: 39232
Diags: (Q)uit, (C)ontinue, (S)tats, (L)og: q
aborted
Figure 4-6. portLoopbackTest command example
If the test does not find an error, there is no output. You can choose to
continue the test, view statistics, or view an error log. Table 4-3 describes the
loopback error message fields.