Dying Gasp
OmniSwitch 6850E Series Chassis and Hardware Components
page 2-48
OmniSwitch 6850E Series Hardware Users Guide
January 2013
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
command and refer to the SNMP Configuration chapter for information on
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
command to add a Syslog station. Refer to the
Using Switch Logging
Configuration
chapter in the
Network Configuration Guide
for information on configuring a Syslog server.
