Dynamic reconfiguration (DR) is the ability to reconfigure a system while the system is running, with little or no impact on existing operations. Not all Sun platforms support DR. Some Sun platforms might only support DR of certain types of hardware. On platforms that support DR of NIC's, IPMP can be used to transparently fail over network access, providing uninterrupted network access to the system.
For more information on how IPMP supports DR, refer to IPMP and Dynamic Reconfiguration.