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OmniSwitch 6450 Chassis and Hardware Components
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.
When a reload command is issued.
•
•
When a takeover command is issued.
Note. Dying gasp will not work when both primary and backup power supplies fail simultaneously.
Connect each power supply to a separate independent power source to avoid simultaneous power failures.
SNMP Trap
As soon as the power failure is detected, an SNMP trap is sent to the first three configured SNMP stations.
The trap includes the following information:
•
Slot number
Power supply type (primary/backup)
•
•
Time of the failure
Use the
snmp station
configuring an SNMP station.
Syslog Message
As soon as the power failure is detected, the following Syslog message is sent to the first four configured
Syslog servers, along with the time of the failure:
Dying Gasp Power Failure Event Occurred
Use the
swlog output socket
Configuration chapter in the OmniSwitch 6250/6450 Network Configuration Guide for information on
configuring a Syslog server.
OmniSwitch 6450 Hardware Users Guide
command and refer to the SNMP Configuration chapter for information on
command to add a Syslog station. Refer to the Using Switch Logging
January 2015
Dying Gasp
page 2-49
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