Configuring Dhcp Logging On The Dhcp Server; Displaying And Maintaining The Dhcp Server - HP FlexNetwork MSR2003 Configuration Manual

Configuring 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.
Disable this feature when 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 configure DHCP logging on the DHCP server:
Step
1. Enter system view.
2. Enable DHCP logging.

Displaying and maintaining the 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
Display information about IP address
conflicts.
Display information about DHCP binding
auto backup.
Display information about lease-expired IP
addresses.
Display information about assignable IP
addresses.
Display information about assigned IP
addresses.
Display DHCP server statistics.
Display information about DHCP address
pools.
Clear information about IP address conflicts.
Clear information about lease-expired IP
addresses.
Clear information about assigned IP
addresses.
Clear DHCP server statistics.
Command
system-view
dhcp log enable
Command
display dhcp server conflict [ ip ip-address ]
[ vpn-instance vpn-instance-name ]
display dhcp server database
display dhcp server expired [ [ ip ip-address ]
[ vpn-instance vpn-instance-name ] | pool pool-name ]
display dhcp server free-ip [ pool pool-name |
vpn-instance vpn-instance-name ]
display dhcp server ip-in-use [ [ ip ip-address ]
[ vpn-instance vpn-instance-name ] | pool pool-name ]
display dhcp server statistics [ pool pool-name |
vpn-instance vpn-instance-name ]
display dhcp server pool [ pool-name | vpn-instance
vpn-instance-name ]
reset dhcp server conflict [ ip ip-address ] [ vpn-instance
vpn-instance-name ]
reset dhcp server expired [ [ ip ip-address ]
[ vpn-instance vpn-instance-name ] | pool pool-name ]
reset dhcp server ip-in-use [ [ ip ip-address ]
[ vpn-instance vpn-instance-name ] | pool pool-name ]
reset dhcp server statistics [ vpn-instance
vpn-instance-name ]
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Remarks
N/A
By default, DHCP logging is disabled.