Brocade Communications Systems 425 Manual De Usuario

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 

 monitor hardware components and can be performed while 

the system is running (they are non-disruptive).

Refer to 

 on page 165 for details about this command.

fcdiag commands

Fibre Channel diagnostics include the tests shown in 

Refer to 

 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.