H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 46)

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Configuration procedure
A DHCP server sends trap messages to the network management server when one of the following items
reaches the specified threshold:
• The ratio of successfully allocated IP addresses to received DHCP requests
• The average IP address utilization of the address pool
• The maximum IP address utilization of the address pool
Trap messages help network administrators know the latest usage information of the DHCP server.
Follow these steps to specify the threshold for sending trap messages:
To do… Use the command… Remarks
Enter system view system-view —
Specify the threshold for sending
trap messages to the network
management server 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
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. The server will deny the request for lease extension from a client and the client needs to
request an IP address again.
To do… Use the command… Remarks
Display information about IP address
conflicts
display dhcp server conflict { all | ip
ip-address } [ | { begin | exclude | include }
regular-expression ]
Available in any view
Display information about lease
expiration
display dhcp server expired { all | ip
ip-address | pool [ pool-name ] } [ | { begin |
exclude | include } regular-expression ]
Available in any view
Display information about assignable
IP addresses display dhcp server free-ip [ | { begin |
exclude | include } regular-expression ]
Available in any view
Display IP addresses excluded from
automatic allocation in the DHCP
address pool
display dhcp server forbidden-ip [ | { begin |
exclude | include } regular-expression ]
Available in any view
Display information about bindings
display dhcp server ip-in-use { all | ip
ip-address | pool [ pool-name ] } [ | { begin |
exclude | include } regular-expression ]
Available in any view
Display information about DHCP
server statistics display dhcp server statistics [ | { begin |
exclude | include } regular-expression ]
Available in any view
Display tree organization
information of address pool(s)
display dhcp server tree { all | pool
[ pool-name ] } [ | { begin | exclude |
include } regular-expression ]
Available in any view