H3C Technologies H3C SecPath F1000-E - Manual (Page 54)

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To do… Use the command… Remarks
Enter system view system-view —
Enable the DHCP server to send trap
messages to the network management
server when the specified threshold is
reached
dhcp server threshold { allocated-ip
threshold-value | average-ip-use
threshold-value | max-ip-use
threshold-value }
Optional
Disabled by default.
Displaying and Maintaining the DHCP Server
To do… Use the command… Remarks
Display information about IP address
conflicts display dhcp server conflict { all | ip
ip-address }
Available in any view
Display information about lease
expiration display dhcp server expired { all | ip
ip-address | pool [ pool-name ] }
Available in any view
Display information about assignable IP
addresses
display dhcp server free-ip Available in any view
Display IP addresses excluded from
automatic allocation in the DHCP
address pool
display dhcp server forbidden-ip Available in any view
Display information about bindings
display dhcp server ip-in-use { all | ip
ip-address | pool [ pool-name ] }
Available in any view
Display information about DHCP server
statistics
display dhcp server statistics Available in any view
Display tree organization information of
address pool(s) display dhcp server tree { all | pool
[ pool-name ] }
Available in any view
Clear information about IP address
conflicts reset dhcp server conflict { all | ip
ip-address }
Available in user view
Clear information about dynamic
bindings reset dhcp server ip-in-use { all | ip
ip-address | pool [ pool-name ] }
Available in user view
Clear information about DHCP server
statistics
reset dhcp server statistics Available in user view
NOTE:
Using the save command does not save DHCP server lease information. Therefore, when the system boots
up or the reset dhcp server ip-in-use command is executed, no lease information will be available in the
configuration file. In this case, the server will deny the request for lease extension from a client and the
client needs to request an IP address again.
DHCP Server Configuration Examples
DHCP networking involves two types:
• The DHCP server and client are on the same subnet and perform direct message delivery.
• The DHCP server and client are not on the same subnet and communicate with each other via a
DHCP relay agent.