Managing leased IP addresses

 

The Dynamic Host Configuration Protocol (DHCP) configuration tool can help you specify the IP address pool that DHCP manages and the lease times for those address pools. The DHCP server monitor can help you see which of the IP addresses are currently being leased.

The DHCP server monitor is provided to monitor active lease information for a System i™ DHCP server. This graphical interface enables you to view which IP addresses are leased, how long they have been leased, and when they are available to lease 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.

 

Parent topic:

Dynamic Host Configuration Protocol

Related concepts
Problem: Duplicate IP address assignments on the same network