John B Medamana

US Patent:

6847611, Jan 25, 2005

Filed:

Sep 1, 2000

Appl. No.:

09/654616

Inventors:

Christopher J. Chase - Freehold NJ, US
Stephen L. Holmgren - Little Silver NJ, US
John Babu Medamana - Colts Neck NJ, US
Vikram R. Saksena - Freehold NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G01R 3108
H04L 1228

US Classification:

370232, 370395

Abstract:

A new type of data transport service which uses a frame relay layer data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs). A layer address may be extracted from a layer frame, and the layer address information may be used to route a data packet over a packet-switched network according to the service classes, feature sets, and/or CUGs selected. At the destination, the layer data packet may again be enclosed in a layer frame with a DLCI indicating the service classes, features sets, and/or CUGs. Because the use of conventional permanent virtual circuits (PVCs) is not required in aspects of the invention, new methods of measuring and managing network traffic are presented.

US Patent:

6993043, Jan 31, 2006

Filed:

Nov 13, 2000

Appl. No.:

09/711549

Inventors:

Hrair Aldermeshian - Holmdel NJ, US
Arvind S Chakravarti - Marlboro NJ, US
Richard Hellstern - Cranbury NJ, US
Raymond L. Kimber - Eatontown NJ, US
Ali Mohammad Kujoory - Petaluma CA, US
Yonatan Aharon Levy - Manalapan NJ, US
John Babu Medamana - Colts Neck NJ, US
John Joseph Sikora - Lincroft NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04L 12/66

US Classification:

370466, 370469

Abstract:

The invention provides methods and systems for providing priority processing to critical data as the data is transmitted across a network. A plurality of Internet protocol (IP) packets, each of which contains data and priority information, are received at a first router. The data contained in the IP packets is then encapsulated into frame relay frames containing the priority information. The frame relay frames are transmitted from the first router to a frame relay network in a manner determined by the priority information included in the frame relay frames. The frame relay frames are then transmitted across a frame relay network to a second router in a manner determined by the priority information included in the frame relay frames.

US Patent:

7007084, Feb 28, 2006

Filed:

Nov 7, 2001

Appl. No.:

10/035306

Inventors:

Arvind S Chakravarti - Marlboro NJ, US
Hossein Eslambolchi - Los Altos Hills CA, US
Richard Hellstern - Cranbury NJ, US
John Babu Medamana - Colts Neck NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G06F 15/173
G06F 11/00

US Classification:

709224, 714 47

Abstract:

A next generation performance network management system (′) includes a first component () that monitors one or more attributes of network elements ( and ) as well as peripheral devices ( and ) and interconnecting links () to establish an historic trend for each monitored element. A second performance management system component () monitors, on a near real-time basis, critical attributes of elements identified from historic trends as undergoing performance degradation. If such performance degradations persist, as detected by such near real-time monitoring, then the network operator can repair or replace the element in question to maintain network performance.

US Patent:

7092389, Aug 15, 2006

Filed:

Oct 31, 2001

Appl. No.:

10/001545

Inventors:

Christopher J. Chase - Freehold NJ, US
Stephen L. Holmgren - Little Silver NJ, US
David Kinsky - Piscataway NJ, US
John Babu Medamana - Colts Neck NJ, US
Jeewan P. Ramsaroop - Edison NJ, US
Mateusz W. Szela - Hillsborough NJ, US

Assignee:

AT&T Corp. - Bedminster NJ

International Classification:

H04L 12/56

US Classification:

370389, 370401

Abstract:

An Ethernet Metropolitan Area Network () provides connectivity to one or more customer premises () to packet-based services, such as ATM, Frame Relay, or IP, while advantageously providing a mechanism for assuring security and regulation of customer traffic. Upon receipt of each customer-generated information frame (), an ingress Multi-Service Platform (MSP) () “tags” the frame with a customer descriptor (′) that specifically identifies the recipient customer. In practice, the MSP tags each frame by overwriting the Virtual Local Area Network (VLAN) identifier () with the customer descriptor. Using the customer descriptor in each frame, a recipient Provider Edge Router (PER) () or ATM switch can map the information as appropriate to direct the information to the specific customer at its receiving site. In addition, the customer descriptor (′) may also include Quality of Service (QoS) information, allowing the recipient Provider Edge Router (PER) () or ATM switch to afford the appropriate QoS level accordingly. Each Ethernet switch may advantageously overwrite the VLAN identifier at an incoming port with a second tag associated with an egress port to increase the scale associated with single switch.

US Patent:

7113512, Sep 26, 2006

Filed:

Dec 12, 2001

Appl. No.:

10/016019

Inventors:

Stephen L Holmgren - Little Silver NJ, US
David Kinsky - High Bridge NJ, US
John Babu Medamana - Colts Neck NJ, US
Mateusz W. Szela - Hillsborough NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04L 12/28

US Classification:

37039553, 37039554

Abstract:

A network interworking facility () advantageously interworks Ethernet and ATM networks () having different protocols to permit the data from in one network to pass to the other and vice versa without the need for the source in to account for the protocol of the destination. Upon receipt of an information frame from the source, the interworking facility forms a second frame of a format compatible with the destination network and including the information payload from the first frame. The interworking facility also maps the destination address incorporated in the origin frame to a corresponding destination address of a format compatible with the destination network to facilitate forwarding of the second frame to the destination.

US Patent:

7120150, Oct 10, 2006

Filed:

Jan 30, 2001

Appl. No.:

09/772360

Inventors:

Christopher J Chase - Freehold NJ, US
Stephen L Holmgren - Little Silver NJ, US
David Kinsky - Piscataway NJ, US
John Babu Medamana - Colts Neck NJ, US
Jeewan P. Ramsaroop - Edison NJ, US
Mateusz W. Szela - Hillsborough NJ, US

Assignee:

AT & T Corp. - Bedminster NJ

International Classification:

H04L 12/56

US Classification:

3703951, 370404

Abstract:

An Ethernet Metropolitan Area Network () provides connectivity to one or more customer premises () to packet-bases services, such as ATM, Frame Relay, or IP while advantageously providing a mechanism for assuring security and regulation of customer traffic. Upon receipt of each customer-generated information frame (), an ingress Multi-Service Platform (MSP) () “tags” the frame with a customer descriptor (′) that specifically identifies the recipient customer. In practice, the MSP tags each frame by overwriting the Virtual Local Area Network (VLAN) identifier () with the customer descriptor. Using the customer descriptor in each frame, a recipient Provider Edge Router (PER) () or ATM switch can map the information as appropriate to direct the information to the specific customer at its receiving site. In addition, the customer descriptor (′) may also include Quality of Service (QoS) information, allowing the recipient Provider Edge Router (PER) () or ATM switch to afford the appropriate QoS level accordingly.

US Patent:

7191230, Mar 13, 2007

Filed:

Dec 21, 2005

Appl. No.:

11/313354

Inventors:

Arvind S Chakravarti - Marlboro NJ, US
Hossein Eslambolchi - Los Altos Hills CA, US
Richard Hellstern - Cranbury NJ, US
John Babu Medamana - Colts Neck NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G06F 15/173
G06F 11/00

US Classification:

709224, 714 47

Abstract:

A next generation performance network management system (′) includes a first component () that monitors one or more attributes of network elements ( and ) as well as peripheral devices ( and ) and interconnecting links () to establish an historic trend for each monitored element. A second performance management system component () monitors, on a near real-time basis, critical attributes of elements identified from historic trends as undergoing performance degradation. If such performance degradations persist, as detected by such near real-time monitoring, then the network operator can repair or replace the element in question to maintain network performance.

US Patent:

7257118, Aug 14, 2007

Filed:

Feb 28, 2003

Appl. No.:

10/375256

Inventors:

Christopher J. Chase - Freehold NJ, US
Stephen L. Holmgren - Little Silver NJ, US
John Babu Medamana - Colts Neck NJ, US
Vikram R. Saksena - Freehold NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

H04L 12/56

US Classification:

370392, 3703955, 3702956, 370465

Abstract:

A new type of data transport service which uses a frame relay layer 2 data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs). A layer 3 address may be extracted from a layer 2 frame, and the layer 3 address information may be used to route a data packet over a packet-switched network according to the service classes, feature sets, and/or CUGs selected. At the destination, the layer 3 data packet may again be enclosed in a layer 2 frame with a DLCI indicating the service classes, features sets, and/or CUGs. Because the use of conventional permanent virtual circuits (PVCs) is not required in aspects of the invention, new methods of measuring and managing network traffic are presented.