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Perform the following steps to verify that a POST completes without errors:
1. Verify that all LEDs return to a normal state after a POST completes. If one or
2. Verify that the switch prompt displays when a POST completes. If it does not
3. Review the system log. Any errors that are detected during a POST are written
For information about error messages or how to set a switch to beacon, see the
Brocade Diagnostic and System Error Message Reference and the Brocade Fabric
OS Reference.
Maintaining the switch
The switch does not require any regular physical maintenance. It is designed to
minimize the chance of failure by using diagnostic tests and field replaceable units
(FRUs).
Diagnostic tests
Diagnostic tests are provided to help you to identify problems in the hardware and
the firmware. The diagnostic tests include tests of internal connections and circuitry,
SFPs, and fiber-optic cables in use. You can run the tests either by using Telnet or
through a terminal that is set up for a serial connection to the switch. Some tests
require that external cables connect the ports to each other. This allows diagnostics
to verify the serializer or deserializer interface and to test the attached SFP and
cable.
All diagnostic tests run at link speeds of 1 Gbps and 2 Gbps. For information about
diagnostic tests and how to run them, see the Brocade Fabric OS Reference.
Note: The diagnostic tests temporarily lock the transmit and receive speed of the
Field replaceable units
You can replace the 16-port cards, CP cards, power supplies, and blower
assemblies in the field without special tools. In most cases, the switch can continue
to operate while you replace a FRU. See Chapter 6, "Servicing the M12," on page
57 for the procedures for how to replace these FRUs and other components.
You can configure Fabric Watch alarms for each FRU. For information about Fabric
Watch alarms, see the Brocade Fabric Watch User's Guide.
You can determine the status of the individual FRU by visually checking the LEDs
on the hardware components (see "Interpreting LED activity" on page 20) or by
using Telnet commands. For information about Telnet commands, see the Brocade
Fabric OS Reference.
Environmental status and maintenance commands
You can also view environmental information and switch status by using Telnet
commands. See the Brocade Fabric OS Reference for a complete description of
these commands.
more LEDs do not return to a normal state, and this is not due to the switch
being set to beacon, see "Interpreting LED activity" on page 20. Run the
slotShow command to check the status of the slots.
display, a POST did not successfully complete. Contact IBM for support.
to the system log. You can view this error log by running the errShow
command.
links to a specific speed.
Chapter 3. Operating the M12
31
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