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Diagnostics and troubleshooting
The switch is designed for high availability and low failure. It does not require any
regular physical maintenance. It includes diagnostic tests and field-replaceable
units, described in the following sections.
Diagnostic tests
In addition to POST, Fabric OS includes diagnostic tests to help you troubleshoot
the hardware and firmware. This includes tests of internal connections and
circuitry, fixed media, and the transceivers and cables in use. The tests are
implemented by command, either through a Telnet session or through a terminal
set up for a serial connection to the switch. Some tests require the ports to be
connected by external cables, to allow diagnostics to verify the
serializer/deserializer interface, transceiver, and cable. Some tests require loopback
plugs.
Diagnostic tests are run at link speeds of 1 Gbps, 2 Gbps, 4 Gbps, and 8 Gbps. For
information about specific diagnostic tests, see the Fabric OS Administrator's Guide.
Note: Diagnostic tests might temporarily lock the transmit and receive speed of
CRU status
The power supply/fan assemblies are customer replaceable units (CRUs), which
can be replaced without the use of special tools. To determine the status of these
CRUs, use the following diagnostic procedures. Follow the procedures in
"Replacing a power supply/fan assembly" on page 32 if you determine that any
CRUs are defective.
Power supply/fan assemblies
The two power supply/fan assemblies, #1 ( 1 in Figure 11 on page 32) and #2
( 2 ), are hot-swappable. They are identical and fit into either power supply/fan
slot. They are keyed to prevent being inserted upside down.
Fabric OS identifies the power supply/fan assemblies as follows (viewing the
switch from the nonport side):
v Power supply #1 on the right
v Power supply #2 on the left
Fabric OS identifies the fan asemblies as follows (viewing the switch from the
nonport side):
v Fan assembly #1 on the right
v Fan assembly #2 on the left
The FRUs are cross-connected so that if one power supply fails, the fans will
continue to run on power from the other power supply.
Use any of the following methods to determine whether a power supply needs to
be replaced:
v Check the power supply status LED next to the On/Off switch (see "Power
v In Web Tools, click the Power Status or Fan Status icons.
the links during diagnostic testing. After completing offline diagnostics tests,
power-cycle the switch.
status LED patterns" on page 26).
Chapter 3. Operating the SAN06B-R
31
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Troubleshooting
