Digital network modem with an integrated DHCP server

Details Digital network modem with an integrated DHCP server Digital network modem with an integrated DHCP server

2006-02-24

2009-12-22

Patel, Ashok B (Department: 2449)

Electrical computers and digital processing systems: multicomput

Network computer configuring

Reconfiguring

C709S209000, C709S219000, C370S242000, C370S245000, C370S253000

Reexamination Certificate

active

07636775

ABSTRACT:
The digital network modem has a built-in Dynamic Host Configuration Protocol (DHCP) mechanism for dynamically assigning network addresses to clients on the local network. To prevent confusion with a potentially existing DHCP server on the local network, an autosense mechanism is provided to detect the existence of a DHCP server and disable the internal, built-in DHCP mechanism. At power-on, the modem has no knowledge of clients on the local network, and the addresses in use are checked prior to operation. Addresses in use are placed in a list in a store of unknown addresses, and are not assigned to clients requesting DHCP addresses. When a DHCP client requests an address and has as its current address one of the addresses on the list, the current address is removed from the list. The list of unusable addresses is thus minimized and the same address will not be used for two clients.

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International Search Report (dated Mar. 23, 2000) issued in International Application No. PCT/CA99/01014.

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