Nurettin B Beser

6370147, Apr 9, 2002

Apr 23, 1998

09/065129

Nurettin B. Beser - Evanston IL

3Com Corporation - Santa Clara CA

H04N 714

370401, 370457, 709222

A method is provided to address passive network devices in a data-over-cable system. A âpassiveâ network device, such as a printer, facsimile machine, computer other network device, is a device that is assigned a network address by the data-over-cable system and does not have a Dynamic Host Configuration Protocol stack to obtain its own network address. A network address assigned to a passive network device by the data-over-cable system is stored in a configuration file for an active network device such as a cable modem that is associated with the passive network device. An active network device has a Dynamic Host Configuration Protocol Stack to obtain a network address. The active network device is initialized with the configuration file including the assigned network address of the passive network device. The active network device registers with a cable modem termination system by sending a registration message that includes the assigned network address for the passive network device. The active network device and the active network device termination system store the network address for the active network device and the assigned network address for the passive network device in internal tables.

6442158, Aug 27, 2002

May 27, 1998

09/085736

Nurettin B. Beser - Evanston IL

3Com Corporation - Santa Clara CA

H04L 1266

370352, 37039521, 37039543, 370417

A method and system for forwarding data-packets in a data-over-cable system, is provided. The data-packets received by the head-end of the data-over-cable system are sorted according to the Quality-of-Service identifiers assigned to the destination for the respective data-packets. The sorted data-packets are forwarded subsequently in accordance with the Quality-of-Service settings corresponding to their respective Quality-of-Service identifiers. Data-packets that cannot be transmitted in accordance with their respective Quality-of-Service identifiers are cached for transmission at a later time point.

6496867, Dec 17, 2002

Aug 27, 1999

09/384120

Nurettin B. Beser - Evanston IL
Michael Borella - Naperville IL

3Com Corporation - Santa Clara CA

G06F 1516

709245, 709227, 709225

A method for initiating a tunneling association in a data network. The method includes negotiating private addresses, such as private Internet Protocol addresses, for the ends of the tunneling association. The negotiation is performed on a public network, such as the Internet, through a trusted-third-party without revealing the private addresses. The method provides for hiding the identity of the originating and terminating ends of the tunneling association from the other users of the public network. Hiding the identities may prevent interception of media flow between the ends of the tunneling association or eavesdropping on Voice-over-Internet-Protocol calls. The method increases the security of communication on the data network without imposing a computational burden on the devices in the data network.

6510162, Jan 21, 2003

May 27, 1998

09/090593

John G. Fijolek - Naperville IL
Nurettin B. Beser - Evanston IL

3Com Corporation - Santa Clara CA

H04J 316

370432, 370469, 370486, 709223, 709239, 709225

A system and method for managing the data channel usage in a data over cable system having more than one data channel. The system includes network devices, which are cable modems connected in at least a downstream connection to one of the data channels in a cable network. The upstream connection to the cable modem may be to the cable network or to alternative networks such as, the public switched telephone network. During initialization, the cable modems attempt to communicate over a channel designated for it in the configuration parameters provided for the cable modems. If unable to use the channel, or if no channel has yet been defined for it, the cable modem scans the bandwidth for an available data channel. The cable modem may lock on the first found data channel. The cable modems register with the cable network and are assigned to a cluster.

6523068, Feb 18, 2003

Aug 27, 1999

09/385118

Nurettin B. Beser - Evanston IL
Michael Borella - Naperville IL

3COM Corporation - Santa Clara CA

G06F 1516

709238, 709245, 370392

Methods for processing a media flow at an end of a tunneling association in a data network. One method includes receiving a data packet on a public network, such as the Internet, and recognizing that it encapsulates another data packet for a virtual connection to an application. The virtual connection is addressed by private network addresses. Another method includes constructing a data packet for a virtual connection to the application and encapsulating it for transmission on the public network. The methods provide for hiding the identity of the originating and terminating ends of the tunneling association from the other users of the public network. Hiding the identities may prevent interception of media flow between the ends of the tunneling association or eavesdropping on Voice-over-Internet-Protocol calls. The methods increase the security of communication on the data network without imposing a computational burden on the devices in the data network.

6560203, May 6, 2003

May 27, 1998

09/085905

Nurettin B. Beser - Evanston IL
John G. Fijolek - Naperville IL

3Com Corporation - Santa Clara CA

H04L 1226

370252, 370352, 370401, 370465, 725111

A method and system for changing type-of-service with an associated quality-of-service in a data-over-cable system is provided. The method and system allow a cable modem or a cable modem termination system to dynamically override the statically assigned type-of-service supplied to the cable modem in a Dynamic Host Configuration Protocol (âDHCPâ) initialization sequence. A selection input can request a second type-of-service that may or may not be supported by the cable modem on the cable modem termination system. If the requested second type-of-service with an associated second quality-of-service is permitted on the cable modem, the cable modem termination system dynamically changes the first type-of-service to the requested second type-of-service. Allowing a cable modem and cable modem termination system to change the statically assigned type-of-service to a second type-of-service allows the user greater flexibility for configuration cable modems in a data-over-cable system.

6577642, Jun 10, 2003

Jan 15, 1999

09/232762

John G. Fijolek - Naperville IL
Nurettin B. Beser - Evanston IL
Philip T. Robinson - Lake Barrington IL
Levent Gun - Lake Forest IL

3Com Corporation - Santa Clara CA

H04J 316

370465

A method and system for virtual network administration with a data-over-cable system. A virtual networking tag and a network address (e. g. , an Internet Protocol address) assigned by a network other than a data-over-cable system is used to provide a virtual network to one or more network devices, such as cable modems via a data-over-cable system. The virtual networking tag may also be used to request a desired service class (e. g. , Class-of-Service, Quality-of-Service, Type-of-Service, Service Level Agreements, etc. ), for a desired end-to-end networking service (e. g. , Voice over Internet Protocol). The virtual networking tag can be mapped to a data-over-cable service class. The data-over-cable service class can be mapped into a transport service class for a transport network. The virtual networking tag is used to provide a desired end-to-end networking service from a network device on a first external network (e. g. , an Ethernet Local Area Network), through the data-over-cable system, through a transport network (e. g.

6636485, Oct 21, 2003

May 14, 1998

09/079323

John G. Fijolek - Naperville IL
Nurettin B. Beser - Evanston IL

3Com Corporation - Santa Clara CA

H04L 1264

370252, 370468, 725105

A method and system for quality-of-service in a data-over-cable system is provided. A cable modem in a data-over-cable system makes a connection request to a cable modem termination system with a requested quality-of-service. The requested quality-of-service includes class-of-service, quality-of-service and other related parameters. The connection request is sent from a cable modem or a cable modem termination system to a Quality-of-Service (âQoSâ) server. The OoS server determines if the cable modem termination system has enough bandwidth to make the connection to the cable modem with the requested quality-of-service. If the cable modem termination system has enough bandwidth, a quality-of-service identifier is to returned to the cable modem termination system. The cable modem termination system uses the quality-of-service identifier to make a connection to the cable modem with the requested QoS to the cable modem. The QoS server reduces the computational burden and complexity of software on the cable modem termination system.