David E Haas

US Patent:

8284791, Oct 9, 2012

Filed:

May 17, 2010

Appl. No.:

12/781080

Inventors:

Stephen John Unger - Allen TX, US
David Joseph Haas - Mahwah NJ, US
Nimer Yaseen - Allen TX, US

Assignee:

Fujitsu Limited - Kawasaki

International Classification:

H04L 12/28

US Classification:

370419, 370421

Abstract:

According to one embodiment, a method includes configuring a plurality ports as member ports of a link aggregation group. The method also includes configuring the link aggregation group to communicate management traffic originating from a plurality of maintenance entities communicatively coupled to the link aggregation group communicate carrier traffic originating from other network elements communicatively coupled to the link aggregation group. The method further includes assigning individual maintenance entities of the plurality of maintenance entities to individual physical ports of the link aggregation group in order to balance maintenance traffic among the plurality of physical ports.

US Patent:

8416679, Apr 9, 2013

Filed:

May 11, 2010

Appl. No.:

12/777660

Inventors:

Stephen John Unger - Allen TX, US
David Joseph Haas - Mahwah NJ, US
Virgil Vladescu - Hillsdale NJ, US
Nimer Yaseen - Allen TX, US

Assignee:

Fujitsu Limited - Kawasaki-shi

International Classification:

G01R 31/08

US Classification:

370216

Abstract:

According to one embodiment, a method may include detecting an occurrence of a fault for a component of a network element having a maintenance entity provisioned thereon. The method may further include transmitting alarm indication suppression messages to components for which the maintenance entity was configured to transmit alarm indication suppression messages in response to detecting the occurrence of the fault.

US Patent:

8614958, Dec 24, 2013

Filed:

Jul 14, 2010

Appl. No.:

12/836162

Inventors:

Stephen John Unger - Allen TX, US
David Joseph Haas - Mahwah NJ, US

Assignee:

Fujitsu Limited - Kawasaki-shi

International Classification:

G01R 31/08
G06F 11/00
G08C 15/00
H04J 1/16
H04J 3/14
H04L 1/00
H04L 12/28

US Classification:

370248, 370241, 3702411, 370242

Abstract:

According to one embodiment, a method may include a given maintenance end point receiving connectivity fault management (CFM) messages (e. g. , CCMs) at the provisioned maintenance level of the maintenance end point. Additionally the method may also include snooping CFM messages at maintenance levels higher the provisioned maintenance level of the given maintenance end point and storing the configuration information necessary for transmitting alarm indication suppression message from the lowest higher-level CFM message snooped across the maintenance end point. The method may further include a timeout of the stored information if transmission of the higher-level CFM messages cease. The method may include snooping these higher-level CFM messages in either direction and also include the ability to display the higher-level CFM information to an operator through a user-interface.

US Patent:

8630186, Jan 14, 2014

Filed:

May 17, 2010

Appl. No.:

12/781096

Inventors:

Stephen John Unger - Allen TX, US
David Joseph Haas - Mahwah NJ, US
Virgil Vladescu - Hillsdale NJ, US
Nimer Yaseen - Allen TX, US
Basavaraj Menasinahal - Montvale NJ, US
Calvin Wan - Plano TX, US

Assignee:

Fujitsu Limited - Kawasaki-shi

International Classification:

H04J 1/16
H04L 12/28

US Classification:

370241, 370252, 370216, 370278, 370419

Abstract:

According to one embodiment, a method may include communicating an alarm suppression indication trigger message from a maintenance end point to an alarm indication suppression generator. The method may further include communicating, by the alarm indication suppression generator in response to receiving the alarm indication trigger message, an alarm indication suppression message to at least one flow point that has alarm indication suppression enabled for the maintenance end point such that the alarm indication suppression message is received by at least one other maintenance end point upstream of the maintenance end point.