Keith L Rasmussen

US Patent:

7020796, Mar 28, 2006

Filed:

Oct 29, 2001

Appl. No.:

10/004180

Inventors:

Damon John Ennis - Los Gatos CA, US
Mark Allen Dowdy - Los Altos CA, US
Christopher Allen Cates - Cupertino CA, US
Keith Erhart Rasmussen - Los Gatos CA, US

Assignee:

CIENA Corporation - Linthicum MD

International Classification:

H02H 3/05

US Classification:

714 4

Abstract:

A high availability communication system is disclosed having multiple layers of redundancy, including network interface redundancy, network switching mechanism redundancy, and functional redundancy. To minimize the effect of the redundancy on other parts of an overall system, virtual addresses are implemented. These virtual addresses enable other parts of the overall system to interact with the communication system without knowing the details of the redundancy. By implementing multiple layers of redundancy with virtual addresses in this manner, high availability is achieved without causing inefficiencies to be suffered by other parts of the overall system.

US Patent:

7110406, Sep 19, 2006

Filed:

Oct 29, 2001

Appl. No.:

10/003193

Inventors:

Damon John Ennis - Los Gatos CA, US
Mark Allen Dowdy - Los Altos CA, US
Todd Hoff - Los Gatos CA, US
Keith Erhart Rasmussen - Los Gatos CA, US

Assignee:

CIENA Corporation - Linthicum MD

International Classification:

H04L 12/56
H04J 3/26

US Classification:

370390, 370432

Abstract:

An improved inter-module communication facilitation mechanism (CFM) is disclosed, which provides improved scalability, improved efficiency, and enhanced functionality and performance. In one aspect, the CFM enables a subscriber to subscribe to multiple events using a single namespace specification and a single subscription request. In another aspect, the CFM enables publishers to broadcast, rather than unicast, events to multiple subscribers concurrently. In yet another aspect, the CFM enables message exchange between senders and recipients to be conducted reliably, while at the same time ensuring that a message will be delivered to a recipient at most once. These and other aspects give rise to the many benefits offered by the CFM.

US Patent:

7254616, Aug 7, 2007

Filed:

Oct 29, 2001

Appl. No.:

10/003189

Inventors:

Damon John Ennis - Los Gatos CA, US
Mark Allen Dowdy - Los Altos CA, US
Todd Miles Hoff - Los Gatos CA, US
Keith Erhart Rasmussen - Los Gatos CA, US

Assignee:

CIENA Corporation - Linthicum

International Classification:

G06F 15/167

US Classification:

709213, 709202, 709203, 709219, 709226, 709248, 370390, 714749

Abstract:

An improved inter-module communication facilitation mechanism (CFM) is disclosed, which provides improved scalability, improved efficiency, and enhanced functionality and performance. In one aspect, the CFM enables a subscriber to subscribe to multiple events using a single namespace specification and a single subscription request. In another aspect, the CFM enables publishers to broadcast, rather than unicast, events to multiple subscribers concurrently. In yet another aspect, the CFM enables message exchange between senders and recipients to be conducted reliably, while at the same time ensuring that a message will be delivered to a recipient at most once. These and other aspects give rise to the many benefits offered by the CFM.

US Patent:

7356529, Apr 8, 2008

Filed:

Oct 29, 2001

Appl. No.:

10/003186

Inventors:

Damon John Ennis - Los Gatos CA, US
Mark Allen Dowdy - Los Altos CA, US
Todd Miles Hoff - Los Gatos CA, US
Keith Erhart Rasmussen - Los Gatos CA, US

Assignee:

Ciena Corporation - Linthicum MD

International Classification:

G06F 17/30

US Classification:

707 6, 707 9, 707100, 707101, 709206

Abstract:

An improved inter-module communication facilitation mechanism (CFM) is disclosed, which provides improved scalability, improved efficiency, and enhanced functionality and performance. In one aspect, the CFM enables a subscriber to subscribe to multiple events using a single namespace specification and a single subscription request. In another aspect, the CFM enables publishers to broadcast, rather than unicast, events to multiple subscribers concurrently. In yet another aspect, the CFM enables message exchange between senders and recipients to be conducted reliably, while at the same time ensuring that a message will be delivered to a recipient at most once. These and other aspects give rise to the many benefits offered by the CFM.