Temperature Errors; Dying Gasp; Scenarios - Alcatel-Lucent OmniSwitch 6465 Hardware User's Manual

Dying Gasp

Temperature Errors

The switch monitors the chassis temperature at all times via an onboard sensor. If an over-temperature
condition occurs, there are two different levels of error severity:
Warning threshold (Thresh) temperature has been exceeded
•
Danger threshold has been exceeded
•
Warning Threshold Temperature
If the temperature exceeds the switch's Warning threshold, the switch sends out a trap. Traps are also
printed to the console in the form of text error messages.
When the Warning threshold has been exceeded, switch operations remain active. However, it is
recommended that immediate steps be taken to address the over-temperature condition.
Addressing Warning threshold conditions may include:
Checking for a chassis airflow obstruction
•
Checking the ambient room temperature
•
Danger Threshold
If the chassis temperature rises above the Danger threshold, the switch will power off until the temperature
conditions have been addressed and the switch is manually booted. The Danger threshold is factory-set
and cannot be configured by the user.
Addressing the Danger threshold conditions may include:
Checking for a chassis airflow obstruction
•
Checking the ambient room temperature
•
Dying Gasp
If the switch loses all power it will maintain power long enough to send a Dying Gasp message before
completely shutting down. An SNMP trap, Syslog message and Link OAM PDUs will be generated.

Scenarios

A Dying Gasp event will be generated in the following scenarios:
Primary power supply failure (if only power supply present)
•
Primary power supply failure and then backup power supply failure
•
Backup power supply failure and then primary power supply failure
•
Note. Connect each power supply to a separate independent power source to avoid simultaneous
power failures.
page 3-40 OmniSwitch 6465 Hardware Users Guide
Chassis and Power Supplies
December 2019