The DHCP Server Monitor can help you to monitor and manage leases.
The DHCP configuration tool helps you set up the DHCP server, the clients it will serve, and the information that is sent to the clients. In the DHCP configuration tool, you specify the IP address pool that DHCP will manage and the lease times for those address pools. If you want to see which of the IP addresses are currently being leased, you need to use the DHCP Server Monitor.
The DHCP Server Monitor is provided to monitor active lease information for an IBM® iSeries™ DHCP server. This graphical interface allows you to view which IP addresses are leased, how long they have been leased, and when they will be available to lease out again.
You can also use the DHCP Server Monitor to reclaim IP addresses that are no longer being used. If the DHCP address pool has been exhausted, you can look through the active lease information to determine if there are any leases that you might want to delete, making the IP address available to other clients. For example, you might have a client that is no longer on the network, but still has an active IP address lease. You can delete the active IP address lease for this client. You should only perform this operation when you are certain that the client will no longer attempt to use the address. The DHCP server will not notify the clients when you delete their active IP address lease. If you delete an active lease for a client that is still on the network without releasing the IP address from the client, you might end up with duplicate IP address assignments on your network.