Diagnostics/Troubleshooting
Power-On Self Test Diagnostics
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The Logged-In LED has three indications:
Continuous illumination: A device is logged in to the port.
Flashing once per second: A device is logging in to the port, or the port is in
the diagnostics state.
Flashing twice per second: The port is down, offline, or an error has
occurred.
If a Logged-In LED is flashing twice per second, review the event browser for
alarm messages regarding the affected port. You can also inspect the alarm log
using the Show Alarm command. If there is an error, alarm messages may point to
excessive port errors.
The switch can monitor a set of port errors and generate alarms based on
user-defined sample windows and thresholds. These port errors include the
following:
Cyclic Redundancy Check (CRC) errors
Decode errors
ISL connection count
Device login errors
Device logout errors
Loss-of-signal errors
Port threshold alarm monitoring is disabled by default. Refer to the
SANbox 3810
Fibre Channel Switch Command Line Interface Guide
for information about
managing port threshold alarms.
If the count for any of these errors exceeds the rising trigger for three consecutive
sample windows, the switch generates an alarm and disables the affected port,
changing its operational state to
down
. Port errors can be caused by the following:
Triggers are too low or the sample window is too small
Faulty Fibre Channel port cable
Faulty SFP
Faulty port
Faulty device or adapter
Review the event browser to determine if excessive port errors are responsible for
disabling the port. Look for a message that mentions one of the monitored error
types indicating that the port has been disabled, then do the following:
Summary of Contents for SANbox 3810
Page 1: ...59268 00 A SANbox 3810 Fibre Channel Switch Installation Guide Firmware Version 7 4...
Page 8: ...viii 59268 00 A SANbox 3810 Fibre Channel Switch Installation Guide S Notes...
Page 34: ...General Description Switch Management 1 10 59268 00 A S Notes...
Page 44: ...Planning Fabric Management 2 10 59268 00 A S Notes...
Page 62: ...Installation Installing Firmware 3 18 59268 00 A S Notes...
Page 90: ...SANbox 3810 Fibre Channel Switch Installation Guide Index 6 59268 00 A S Notes...
Page 91: ......