3com Corporation

Yuri Arutyunov

William Necka

Ronald B Lee

John G Fijolek

Ali Akgun

Igor Fey

A system and methods for traffic gating in a computer network comprising a plurality of subnets are developed. One of the methods implemented in a data-over-cable system includes, responsive to receiving a first address resolution request message on a cable modem from a first host to a second host, generating a second address resolution request message on the cable modem and sending it to the second host. If the second host does not respond with an address resolution protocol reply message to the second request message, the cable modem determines a network subnet associated with the first host. Based on the network subnet, the cable modem determines a network address of a network element arranged to provide routing services to hosts on the subnet associated with the first host. Next, the cable modem generates an address resolution reply message including the network address of the network element and sends it to the first host.

System and method for resolving network addresses for network devices on distributed network subnets

A system and method for proxying Dynamic Host Configuration Protocol ('DHCP') network services for a network device, such as, a customer premise equipment entity, on a network device, such as, a cable modem, include creating a specialized proxy task for the customer premise equipment entity on the cable modem. One method of the present invention includes intercepting DHCP message flow between a customer premise equipment having a specialized proxy task created on the cable modem and a DHCP server selected by the customer premise equipment entity. The methods further include modifying lease time intervals prior to providing a routable network address lease to a customer premise equipment entity and renewing an initial lease for the customer premise equipment entity by a cable modem prior to expiration of the lease time interval provided by a DHCP server. The methods include using known protocols, such as, for example, the Dynamic Host Configuration Protocol.

System and method for a specialized dynamic host configuration protocol proxy in a data-over-cable network

Methods and systems pertaining to automatically and locally terminating a telephone dial-up connection to a data network are presented as an alternative to an inactivity timeout set by the cable television network headend. A cable modem in a data-over-cable system with telephony return is connected on an upstream telephone dial-up connection to a data network such as the Internet. The cable modem monitors a network interface for incoming data transmission activity from consumer premise equipment, including a personal computer system, connected to the cable modem. If the cable modem determines no incoming data transmission activity, the cable modem begins to query the status of the consumer premise equipment. If the consumer premise equipment does not respond to repeated queries within a specified time, the cable modem terminates the telephone dial-up connection.

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Barrington, IL, United States of America

Yuri Arutyunov