Sticky IP prioritization based on IP pool and subnet by DHCP

摘要

A method, apparatus, and machine readable storage medium is disclosed for handling Dynamic Host Configuration Protocol (DHCP) at a first DHCP server, assigning a priority to each of a plurality of subnets and assigning to a client, a previously assigned IP address if the previously assigned IP address is still available and if the previously assigned IP address is in a subnet having a highest priority.

主权项

1. A method for handling Dynamic Host Configuration Protocol (DHCP) at a first DHCP server, said method comprising steps of:
assigning a priority to each of a plurality of subnets; receiving a DHCP Discover message from a client; in response to receipt of a DHCP Discover message from a client, determining if said client had a previously assigned IP address; determining if said previously assigned IP address is still available; responsive to said previously assigned IP address being available determining if said previously assigned IP address is in a subnet having a highest priority; responsive to said previously assigned IP address being in a subnet having a highest priority, selecting said previously assigned IP address; and transmitting a DHCP Offer message to said client, offering said selected IP address.