Dana M Blair

US Patent:

6970449, Nov 29, 2005

Filed:

Dec 28, 2000

Appl. No.:

09/753049

Inventors:

Malcolm M. Smith - Morrisville NC, US
Dana L. Blair - Alpharetta GA, US
Gregory D. Pelton - Raleigh NC, US
David R. Oran - Acton MA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J003/24

US Classification:

370349, 370338, 370390, 370432, 455519

Abstract:

A communications system includes base transceiver stations providing wireless services for mobile units. The system further includes a packet network coupling the stations to a gateway. To distribute information received for communication to a mobile unit, the gateway may encapsulate the information as a multicast packet addressed to a multicast address. This multicast address corresponds to a multicast group associated with the mobile unit. The packet network distributes copies of the multicast packet to a group of stations that are registered for the multicast group. These stations may then communicate information from the multicast packet to the mobile unit using wireless communications techniques.

US Patent:

7675861, Mar 9, 2010

Filed:

Apr 25, 2005

Appl. No.:

11/113582

Inventors:

Larry R. Metzger - Wake Forest NC, US
Lei Xia - Fremont CA, US
Dana Blair - Atlanta GA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01R 31/08

US Classification:

370241, 370252, 370254

Abstract:

A technique manages targets to which probe packets are sent from a source of a computer network. The novel target management technique dynamically selects an optimal set of valid targets for a particular (monitored) prefix of the computer network. Specifically, one or more targets are selected from a pool of possible learned and configured targets to be used as representatives of the monitored prefix. Probe packets are sent from the source to the selected targets for the duration of an evaluation period. Targets that do not respond to the probe packets during the evaluation period are invalid and deselected, and if available, an unused target is selected from the pool of possible targets to replace each non-responding target for a next evaluation period. Invalid learned targets are discarded, while invalid configured targets are returned to the pool of possible targets for potential re-selection in a later evaluation period.

US Patent:

20090097409, Apr 16, 2009

Filed:

Oct 11, 2007

Appl. No.:

11/870674

Inventors:

Aamer Akhter - Cary NC, US
Dana Blair - Alpharetta GA, US

International Classification:

G06F 11/00

US Classification:

370252

Abstract:

In one embodiment, during network operation, it is dynamically determined whether to change from passive probing of communication path metrics to active probing of communication path metrics.

US Patent:

55862730, Dec 17, 1996

Filed:

Aug 18, 1994

Appl. No.:

8/292563

Inventors:

Dana L. Blair - Raleigh NC
Gordon T. Davis - Boca Raton FL
Cloyd S. McIlvaine - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

395285

Abstract:

Communication, using a synchronous protocol, over a synchronous communications link, between synchronous application programs executed on a terminal (i. e. , personal computer, PC) with an asynchronous byte-oriented interface and a PC with a synchronous frame orientated interface is made possible by enhancing the PC with the asynchronous byte-oriented interface with a device which modifies the data to be transmitted by inserting framing flags and transparency characters before the data passes through the COMM port (asynchronous byte-oriented interface) and extracting the transparency characters after the data exits the COMM port. As a consequence, the PC with the frame-oriented interface does not have to be modified.

US Patent:

60650826, May 16, 2000

Filed:

Nov 13, 1998

Appl. No.:

9/191961

Inventors:

Dana Lynn Blair - Raleigh NC
Gordon Taylor Davis - Boca Raton FL
Cloyd Stanley McIlvaine - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

710105

Abstract:

Communication, using a synchronous protocol, over a synchronous communications link, between synchronous application programs executed on a terminal (i. e. , personal computer, PC) with an asynchronous byte-oriented interface and a PC with a synchronous frame orientated interface is made possible by enhancing the PC with the asynchronous byte-oriented interface with a device which modifies the data to be transmitted by inserting framing flags and transparency characters before the data passes through the COMM port (asynchronous byte-oriented interface) and extracting the transparency characters after the data exits the COMM port. As a consequence, the PC with the frame-oriented interface does not have to be modified.

US Patent:

58599843, Jan 12, 1999

Filed:

Aug 6, 1996

Appl. No.:

8/695279

Inventors:

Dana Lynn Blair - Raleigh NC
Gordon Taylor Davis - Boca Raton FL
Cloyd Stanley McIlvaine - Durham NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 2702

US Classification:

395285

Abstract:

Communication, using a synchronous protocol, over a synchronous communications link, between synchronous application programs executed on a terminal (i. e. , personal computer, PC) with an asynchronous byte-oriented interface and a PC with a synchronous frame orientated interface is made possible by enhancing the PC with the asynchronous byte-oriented interface with a device which modifies the data to be transmitted by inserting framing flags and transparency characters before the data passes through the COMM port (asynchronous byte-oriented interface) and extracting the transparency characters after the data exits the COMM port. As a consequence, the PC with the frame-oriented interface does not have to be modified.