119
Step Command
Remarks
2.
Enable SNMP notifications for
the DHCP server.
snmp-agent trap enable dhcp
server
[
address-exhaust
|
allocated-ip
|
ip-in-use
]
By default, SNMP notifications
are enabled for the DHCP
server.
3.
(Optional.) Set the IP address
allocation success rate
threshold.
dhcp server allocated-ip
threshold
threshold-value
By default, no SNMP
notification is sent for an IP
address allocation success rate
threshold violation.
4.
Enter DHCP address pool
view.
dhcp server ip-pool pool-name
By default, no DHCP address
pool exists.
5.
(Optional.) Set the DHCP
address pool usage threshold.
ip-in-use threshold
threshold-value
The default threshold is 100%.
Enabling DHCP logging on the DHCP server
The DHCP logging feature enables the DHCP server to generate DHCP logs and send them to the
information center. For information about the log destination and output rule configuration in the
information center, see
Network Management and Monitoring Configuration Guide
.
As a best practice, disable this feature if the log generation affects the device performance or
reduces the address allocation efficiency. For example, this situation might occur when a large
number of clients frequently come online or go offline.
To enable DHCP logging on the DHCP server:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable DHCP logging.
dhcp log enable
By default, DHCP logging is
disabled.
Display and maintenance commands for DHCP
server
IMPORTANT:
A restart of the DHCP server or execution of the
reset dhcp server ip-in-use
command deletes all
lease information. The DHCP server denies any DHCP request for lease extension, and the client
must request an IP address again.
Execute
display
commands in any view and
reset
commands in user view.
Task Command
Display information about IP address
conflicts.
display dhcp server conflict
[
ip
ip-address
]
[
vpn-instance
vpn-instance-name
]
Display information about DHCP binding
auto backup.
display dhcp server database
Display information about lease-expired IP
addresses.
display dhcp server expired
[ [
ip
ip-address
]
[
vpn-instance
vpn-instance-name
] |
pool
pool-name
]
