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DES-7200 Configuration Guide Chapter 4 DHCP Configuration
4-13
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This command is enabled by default. Execute NO command to
disable address allocation using CLASS.
4.5.5 Configuring Binding
Database Storage
4.5.5.1 Configuring to periodically
Save Binding Database into
FLASH
To avoid the loss of binding database (lease information) on DHCP server due
to power failure or reboot of device, you can configure the delay time to write
the database into FLASH. The time is 0 by default, namely the database will be
written into FLASH at variable intervals.
To periodically write the binding database into the FLASH, execute the following
command in global configuration mode:
Command Function
DES-7200(config)# [no] ip dhcp
database write-delay [time]
Configure DHCP delay time to write
into FLASH.
time：600s--86400s (default: 0)
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Since frequent FLASH reading and writing will shorten the service
life of FLASH, we shall pay attention to the delay time configured.
Short delay time will enable efficient storage of device information,
while long delay time can reduce the frequency of FLASH reading
and writing, thus providing a longer service life.
4.5.5.2 Configuring to manually Save
Binding Database into FLASH
To avoid the loss of DHCP binding database (lease information) due to power
failure or reboot of device, you can also manually write the existing binding
database information into the FLASH as needed besides configuring the delay
time for FLASH writing.
To manually write the binding database into the FLASH, execute the following
command in global configuration mode: