Dell PowerConnect 5524P User Manual page 291

DHCP Server Properties
If the device is configured to act as a DHCP server, pinging capability can be
enabled. The DHCP server pings an IP address in the address pool before
assigning that IP address to a requesting client. If the ping is unanswered, the
DHCP server assumes that the address is not in use and assigns the address to
the client.
To configure the device as a DHCP server:
1 Click System > DHCP Server > DHCP Server Properties in the tree view
to display the DHCP Server Properties page.
Figure 9-42. DHCP Server Properties
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Dell PowerConnect 55xx Systems User Guide