11. Simulate the data transmission scenario when the error occurred. If the error
does not reappear, the original SFP was defective, and should be discarded. If
the error does reappear, the cable is defective. Replace the cable and discard
the original cable.
12. Simulate the data transmission scenario again to verify that the problem does
not reappear.
Diagnostic tests
In addition to POST, Fabric OS includes diagnostic tests to help troubleshoot the
hardware and the firmware. This includes tests of internal connections and
circuitry, fixed media, and the SFPs 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, SFP, and cable.
All diagnostic tests are run at link speeds of 1, 2, 4, and 8 Gbps, depending on the
speed of the link being tested.
Attention: Diagnostic tests can temporarily lock the transmit and receive speed of
the links during diagnostic testing.
For information about specific diagnostic tests, refer to the Fabric OS Administrator’s
Guide.
Managing the switch
You can use the management functions built into the switch to monitor the fabric
topology, port status, physical status, and other information to help you analyze
switch performance and to accelerate system debugging. The switch automatically
performs power-on-self-test (POST) each time it is turned on. Any errors are
recorded in the error log. For more information about POST, see “POST and boot
specifications” on page 25.
For information about upgrading the version of Fabric OS installed on your switch,
refer to the Fabric OS Administrator’s Guide. You can manage the switch using any
of the management options listed in Table 8.
Table 8. Management options for the switch
Management tool Out-of-band
support
In-band support
Command line interface (CLI)
Up to two admin sessions and four user sessions simultaneously.
For more information, refer to the Fabric OS Administrator's Guide and the
Fabric OS Command Reference.
Ethernet or serial
connection
IP over Fibre
Channel
Web Tools
For information, see the Web Tools Administrator's Guide.
Ethernet or serial
connection
IP over Fibre
Channel
Standard SNMP applications
For information, see the Fabric OS MIB Reference Manual.
Ethernet or serial
connection
IP over Fibre
Channel
Fabric Manager (optional purchase)
For information, refer to the Fabric Manager User’s Guide.
Ethernet or serial
connection
IP over Fibre
Channel
Management Server
For information, see the Fabric OS Administrator's Guide and the Fabric OS
Command Reference.
Ethernet or serial
connection
Native in-band
interface (over
HBA only)
Chapter 3. Operating the switch 31
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