Patent ID: 7945697

Claim:
A system for offering a fixed Internet protocol (IP) address to a client device, the system comprising: a recording module configured for recording a client device ID and an IP address assigned to the client device by a dynamic host configuration protocol (DHCP) server; a determining module configured for determining if the client device is powered on; a sending module configured for periodically sending a renewing request to the DHCP server to renew the recording IP address and make the recording IP address not be withdrawn by the DHCP server in response to the determination that the client device is not powered on; the sending module further configured for periodically sending an offering message comprising the recording client device ID and the recording IP address to the client device until the client device accepts the offering message in response to the determination that the client device is powered on, and making the client device use the recording IP address again; and at least one hardware processor for executing the recording module, the determining module and the sending module.