Brocade VDX 6740 Hardware Reference Manual (Supporting VDX 6740, VDX 6740T, and VDX 6740T-1G) - Manual (Page 44)

32 Brocade VDX 6740 Hardware Reference Manual
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Brocade VDX 6740 maintenance
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FIGURE 11 Installing an SFP+ transceiver in the upper row of port slots
Diagnostic tests
In addition to POST, the Network 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 console set
up to the 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. Refer to the Brocade Network OS Administrator’s Guide and
the Brocade Network OS Command Reference Guide for more details about diagnostic tests and
commands.
Diagnostic tests run at link speeds of 1 or 10 Gbps depending on the speed of the link being tested
and the type of port.
NOTE
Diagnostic tests may temporarily lock the transmit and receive speed of the links during diagnostic
testing.
To monitor the transceivers, the show media command output shows the transceiver information
for all interfaces on the switch. Any unqualified transceiver is disabled and a log message is
generated.
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