Device, system, and method for automatically configuring application terminals in home network

A Dynamic Host Configuration Protocol (DHCP) server, comprising:

• an automatic configuration server (ACS) information saving module configured to save address information of an ACS and identifier information of all application terminals registered on the ACS;
• an application terminal identifier information receiving module configured to receive a second Dynamic Host Configuration Protocol (DHCP) message from a home gateway when the home gateway determines that a first DHCP message sent by an application terminal to the home gateway includes information of the application terminal and a preset character string;
• a judging and processing module configured to:
• judge whether the second DHCP message received by the DHCP server from the home gateway includes the identifier information of the application terminal and the preset character string;
• determine, based on a judgment that the second DHCP message includes the identifier information and the preset character string, whether the DHCP server identifies the preset character string and whether the identifier information is pre-saved in the DHCP server;
• and
• find, based on a determination that the DHCP server identifies the preset character string and the identifier information is pre-saved in the DHCP server, the address information of the ACS of the application terminal according to the identifier information of the application terminal;
• and
• an ACS address information sending module configured to send the address information of the ACS to the home gateway.

A method for automatically configuring application terminals in a home network, comprising:

• receiving, by a home gateway, a first Dynamic Host Configuration Protocol (DHCP) message sent by an application terminal;
• determining, by the home gateway, whether the first DHCP message includes identifier information of the application terminal and a preset character string;
• sending, based on a determination that the first DHCP message includes the identifier information of the application terminal and the preset character string, a second DHCP message including the identifier information of the application terminal and the preset character string to a DHCP server on a public network;
• receiving a third DHCP message including address information of an automatic configuration server (ACS) of the application terminal from the DHCP server, and when the DHCP server identifies the preset character string, determine that the identifier information of the application terminal is pre-saved in the DHCP server, and find the address information of the ACS of the application terminal according to the identifier information of the application terminal;
• and
• sending the address information of the ACS to the application terminal.

A method for automatically configuring application terminals, comprising:

• saving, by a Dynamic Host Configuration Protocol (DHCP) server on a public network, address information of an automatic configuration server (ACS) and identifier information of all application terminals registered on the ACS;
• receiving, by the DHCP server, a second DHCP message from a home gateway when the home gateway determines that a first DHCP message sent by an application terminal to the home gateway includes identifier information of the application terminal and a preset character string;
• judging, by the DHCP server on the public network, whether the second DHCP message received by the DHCP server from the home gateway includes identifier information of an application terminal and a preset character string;
• determining, by the DHCP server and based on a judgment that the second DHCP message includes the identifier information and the preset character string, whether the DHCP server identifies the preset character string and whether the identifier information is pre-saved in the DHCP server;
• finding, by the DHCP server and based on a determination that the DHCP server identifies the preset character string and the identifier information is pre-saved in the DHCP server, the address information of the AC S of the application terminal according to the identifier information of the application terminal;
• and
• sending, by the DHCP server, the address information of the ACS to the home gateway.