Ciena CN 3960, Hardware Installation Manual, Page: 13 / 72

CN 3960 Hardware Installation Guide
9
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VERVIEW
H
ARDWARE
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VERVIEW
1
Dying Gasp
The CN 3960 supports dying gasp functionality. In the event of a power failure, the
CN 3960 sends a dying gasp notification to the network. The notification also contains a
syslog entry (if syslog is enabled).
NOTE: When the system is powered by redundant power supplies, a dying gasp message
will only be sent if both power supplies lose power.
Possible causes of a dying gasp signal include:
•
power failure in the power source
•
disconnection of the AC or DC power source
Resets
The CN 3960 has a reset button. To avoid accidentally triggering the reset button, it is
recessed behind the faceplate. You will need a straightened paper clip or similar small
tool to depress the reset button. The reset button is located to the left of the
management port on the far right of the chassis.
Figure 1-4 shows the location of the
reset button.
Figure 1-4:
Location of Reset Button
There are two different types of hard resets available:
•
Quick reset, which is accomplished by depressing the reset button for less than three
seconds. A quick reset reboots the system and retains the current configuration.
•
Hard reset, which is accomplished by depressing the reset button for three seconds or
more continuously. A hard reset erases the current configuration and restores the unit
to the factory default settings. See the the
Default Configuration section on page 16
for more information about the factory default settings.
NOTE: It is also possible to initiate soft resets of the system through the local console
port, local management port, or the management VLAN. Instructions for initiating a soft
reset are included in the System Software Configuration Guide.
Reset Button
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