ATTO Technology 2500C - Manual (Page 36)

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ATTO Technology Inc. iPBridge Installation and Operation Manual
6 Troubleshooting
If it is clear that a particular component system is at fault in a problem situation, go directly to that
component. If it is not clear, the best approach is to troubleshoot using the inside-out method.
You may check on the status of your iPBridge using
the ExpressNAV interface. Refer to
ExpressNAV
pages on page 23 to see which pages may contain the
information you need. You may also look for
information by using the diagnostic CLI commands,
enumerated in
Diagnostic commands on page 43, in
the Advanced page of the ExpressNAV interface, or by
using the CLI directly (refer to CLI provides ASCII-
based interface on page 35.)
To start and use the ExpressNAV interface, including
how to access the version information, refer to
ATTO
ExpressNAV interface on page 21.
Inside out method
To troubleshoot using the inside out method, begin with the device(s) connected to the iPBridge first, then work
your way out.
• SCSI devices
• iPBridge SCSI ports
• iPBridge internal configuration
• iPBridge Ethernet/IP ports
• LAN/WAN
• Ethernet host adapter or NIC in host
• iSCSI OS driver
• OS
• Application
Check the host event log
Check the event log on the host. Look for the most
recent entries and determine what could be causing a problem, then go to that event and continue
troubleshooting.
Check the iPBridge event and trace logs
Check the iPBridge event log through the CLI. Refer
to
Diagnostic commands on page 43. Look for the
most recent entries and determine what could be
causing a problem. Then go to that event and continue
troubleshooting.
Visually inspect LEDs
Light Emitting Diodes (LEDs) are located on both
sides of the iPBridge
If there is a non-fatal power supply problem, or if a
problem is detected before shut down occurs, the
Fault LED flashes. The Fault LED also flashes briefly
during start up. Each SCSI bus has its own LED to show activity on
that bus. The LED blinks when I/O is occurring and is
solid when there is heavy activity.
The Fault LED lights yellow when the iPBridge is
turned on, then immediately goes dark. Software
activates the LED if there is a system error.