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11.1.7 Notes when the power saving functionality is used
(1) When port power saving is used [AX1250S] [AX1240S]
Port power saving takes from 3 to 5 seconds to place ports in the link-up status.
(2) Scheduling power control
To use the same power saving functionality during a normal time range and a scheduled
time range, perform the setting for both periods.
Example:
Suppose you use the
during a normal time range. To also block a particular port during a scheduled time
range, use the
command.
(3) Time lag in starting and ending power control
Because scheduling uses a software timer, a situation such as a high CPU load might
cause a time lag before the set start or end of a scheduled time range takes effect. This
time lag is less than one minute. Also, depending on the network configuration, there could
be a time lag before communication with the port resumes at the end of a scheduled time
range in which the port has been blocked. Allow a certain margin when you schedule power
control.
(4) When running sleep mode [AX1250S] [AX1240S]
If you are running sleep mode using the scheduling functionality, note the following:
1.
The Switch does not switch to the sleep state if the scheduled time of execution
arrives during operation in configuration command mode. The Switch goes into
sleep mode after exiting configuration command mode (after moving to administrator
mode).
2.
If entering the scheduled time period during software update or restoration, the
Switch does not go into sleep mode. The Switch goes into sleep mode after the
software update or restoration finishes.
3.
A configuration that is not saved is lost if the Switch switches to the sleep state. As a
result, the following messages appear when configuration command mode ends:
Unsaved changes would be lost when the machine goes to sleep!
Do you exit "configure" without save ? (y/n):
Press
4.
If no key input operations are performed for certain period of time (30 minutes by
default), you are automatically logged out. If you are automatically logged out while
editing the configuration and the Switch switches to the sleep state, an unsaved
configuration will be lost.
5.
If the sleep state continues for 20 days, the sleep state is canceled and the Switch is
started.
Then, it goes into sleep mode again after startup.
6.
After the sleep period ends, communication will not resume immediately because
the Switch requires the usual amount of time to start up. Leave a margin to the
scheduled time range and the normal time range.
shutdown
schedule-power-control shutdown interfac
n
to execute the save command.
11 Power Saving Functionality
configuration command to block a particular port
configuration
141
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