Brocade Communications Systems CNA - Manual (Page 80)

62 Brocade Adapters Administrator’s Guide
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Fibre Channel diagnostics using the BCU
6
Fibre Channel diagnostics using the BCU
The purpose of diagnostic commands is to evaluate the integrity of the system hardware. Be sure to
disable the port before running any type of port diagnostics. In addition, it is advisable that you do
not perform other operations on the adapter while running HCM or BCU diagnostics.
diag commands
The diag commands shown in Table 13 monitor hardware components and can be performed while
the system is running (they are non-disruptive).
Refer to “diag” on page 165 for details about this command.
fcdiag commands
Fibre Channel diagnostics include the tests shown in Table 14 .
Refer to “fcdiag” on page 175 for details about this command.
TABLE 13 Fibre Channel diag commands
Command Description
beacon Blinks the appropriate port LED for physical identification. Beaconing can
occur at the port or the link level.
loopback Sends a health check message from the host to firmware through mes-
sage queues that are memory-mapped over the PCI.
memtest Tests the adapter’s memory blocks.
pciloopback Checks the communication path between the host and the IO Controller
(IOC).
queuetest Tests the CPE/RME queue.
sfpshow Displays small form factor pluggable (SFP) information.
tempshow Displays the temperature of the adapter.
TABLE 14 Fibre Channel diagnostic tests
Command Description
fcping Determines the basic connectivity between the Fibre Channel
network points and monitors and measures network latency.
fctraceroute Reports on a SAN path, including node hops and latency data.
fcecho Sends an FC Echo Extended Link Services (ELS) request to a remote
port.
linkbeacon Blinks the LED light of the remote port of the link.
scsitest Tests the SCSI components.