Peter D Beal

US Patent:

7248560, Jul 24, 2007

Filed:

Jun 4, 2002

Appl. No.:

10/162776

Inventors:

Dennis N. Blankenship - Holly Springs NC, US
Michael H. Otto - Apex NC, US
Peter D. Beal - Apex NC, US
John M. Glotzer - Chapel Hill NC, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01R 31/08

US Classification:

370220, 370219, 370328, 370401

Abstract:

A method for selecting an active router in a communication device includes providing multiple routers in the device, coupling the routers to a single physical link, monitoring a status for each of the routers, and selecting one of the routers as an active router by positioning its corresponding relay.

US Patent:

7453900, Nov 18, 2008

Filed:

Mar 5, 2003

Appl. No.:

10/382711

Inventors:

Walter L. Robinson - Raleigh NC, US
Peter D. Beal - Apex NC, US
Dennis N. Blankenship - Holly Springs NC, US
Sumita Bose - Cary NC, US
Bohdan Matuszczak - Morrisville NC, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370431

Abstract:

A method for monitoring noise associated with a communication link is provided that includes monitoring a plurality of communication links that facilitate a plurality of communication flows and determining whether an error parameter associated with a selected one or more of the communication links has exceeded a predefined threshold. An alert message may then be communicated to a next destination when the predefined threshold has been exceeded.

US Patent:

7554903, Jun 30, 2009

Filed:

Jul 24, 2007

Appl. No.:

11/782029

Inventors:

Dennis N. Blankenship - Holly Springs NC, US
Michael H. Otto - Apex NC, US
Peter D. Beal - Apex NC, US
John M. Glotzer - Chapel Hill NC, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01R 31/08

US Classification:

370220, 370219, 370328

Abstract:

A method for selecting an active router in a communication device includes providing multiple routers in the device, coupling the routers to a single physical link, monitoring a status for each of the routers, and selecting one of the routers as an active router by positioning its corresponding relay.

US Patent:

53771842, Dec 27, 1994

Filed:

Mar 2, 1992

Appl. No.:

7/843772

Inventors:

Peter D. Beal - Endicott NY
Karlheinz Dutke - Deckenpfronn, DE
Brian W. Noordyke - Owego NY
Michael L. Shupert - Vestal NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04J 1500

US Classification:

370 24

Abstract:

A communications adapter interconnects a first device exhibiting a two way alternate (TWA) protocol and a second device exhibiting a two way simultaneous (TWS) protocol. The communications adapter comprises a transmit buffer for storing data received from the first device via a first communication link for transmission to the second device via a second communication link, and a receive buffer for storing data received from the second device via the second communication link for transmission to the first device via the first communication link. Data can be transferred in either direction between the transmit or receive buffer and the first device faster than in the same direction between the transmit or receive buffer and the second device. To optimize the overall transfer rate in both directions between the first and second devices, the second communication link is kept busy in both directions by preventing the receive buffer from filling with data from the second device while the first device transmits data to the transmit buffer, and preventing the transmit buffer from emptying due to reading by the second device while the first device reads data from the receive buffer.

US Patent:

58729569, Feb 16, 1999

Filed:

Apr 24, 1997

Appl. No.:

8/842347

Inventors:

Peter Daniel Beal - Apex NC
James Steele Gaillard - Apex NC
Steven Howard Johnson - Cary NC
Gregory Francis Paussa - Cary NC
Alejandro Emilio Vasquez - Raleigh NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15177

US Classification:

395500

Abstract:

An alterable device driver development system for supporting various operating systems, network protocols, and adapter hardware interfaces. Each device driver comprises a System, Network and Adapter software component, each component providing services to the other through its associated programming interfaces and being alterable or replaceable according to the requirements of an associated adapter hardware product. The System component supports a set of services defined by the device driver and which can be used by the Network and Adapter components. The Network component manages all interactions of the Adapter component with a network operating system or protocol stack and ensures its applicability and correctness in the context of the device driver operation. The Adapter component provides the functions for operating and managing all interactions with the adapter hardware. A Transformation Path in the Adapter component improves device driver performance by mapping network packet descriptors against adapter packet descriptors in data transferring processes.