Mukul Ravi Katiyar

US Patent:

20130302033, Nov 14, 2013

Filed:

Jul 17, 2013

Appl. No.:

13/944401

Inventors:

Kotikalapudi Sriram - Marlboro NJ, US
Mukul Katiyar - Piscataway NJ, US
Jonathan Titchener - Green Brook NJ, US
Rajender Rao Nednur - North Brunswick NJ, US
Anthony Vernon Walker Smith - Ottawa, CA

Assignee:

Alcatel Lucent - Murray Hill NJ

International Classification:

H04Q 11/00

US Classification:

398 49

Abstract:

In an automatically switched optical network, the wavelengths are assigned to optical path based on their intrinsic physical performance and on the current network operating parameters. The wavelength performance information is organized in binning tables, based primarily on the wavelength reach capabilities. A network topology database provides the distance between the nodes of the network, which is used to determine the length of the optical path. Other network operating parameters needed for wavelength selection are also available in this database. Once a bin corresponding to the path length is identified in the binning table, the wavelength for that path is selected based on length only, or based on the length and one or more additional parameters. The optical path performance is estimated for the selected wavelength, and the search continues if the estimated path performance is not satisfactory. Several available wavelengths are searched and of those, the wavelength that is most used along the optical path in consideration or alternatively network-wide is selected and assigned. This method helps minimize wavelength fragmentation. The binning tables may have various granularities, and may be organized by reach, or by reach, wavelength spacing, the load on the respective optical path, the fiber type, etc.

US Patent:

8521022, Aug 27, 2013

Filed:

Apr 23, 2002

Appl. No.:

10/128092

Inventors:

Kotikalapudi Sriram - Marlboro NJ, US
Mukul Katiyar - Piscataway NJ, US
Jonathan Titchener - Green Brook NJ, US
Rajender Rao Nednur - North Brunswick NJ, US
Anthony Vernon Walker Smith - Ottawa, CA

Assignee:

Alcatel Lucent - Paris

International Classification:

H04J 14/00

US Classification:

398 57

Abstract:

In an automatically switched optical network, the wavelengths are assigned to optical path based on their intrinsic physical performance and on the current network operating parameters. The wavelength performance information is organized in binning tables, based primarily on the wavelength reach capabilities. A network topology database provides the distance between the nodes of the network, which is used to determine the length of the optical path. Other network operating parameters needed for wavelength selection are also available in this database. Once a bin corresponding to the path length is identified in the binning table, the wavelength for that path is selected based on length only, or based on the length and one or more additional parameters. The optical path performance is estimated for the selected wavelength, and the search continues if the estimated path performance is not satisfactory. Several available wavelengths are searched and of those, the wavelength that is most used along the optical path in consideration or alternatively network-wide is selected and assigned.

US Patent:

20230059537, Feb 23, 2023

Filed:

Aug 19, 2021

Appl. No.:

17/407102

Inventors:

- San Jose CA, US
Jayakrishnan V. Iyer - Morgan Hill CA, US
Apurva Mehta - Cupertino CA, US
Pani Ayyappa - Fremont CA, US
Mukul Katiyar - Pleasanton CA, US
Ramanarayanan Ramakrishnan - San Jose CA, US

International Classification:

H04L 12/721
H04L 29/08
H04L 12/26

Abstract:

Embodiments herein disclose path selection for data traffic within a software-defined wide area network using traffic metrics. Some embodiments relate to a method that includes polling peers of the SD-WAN for traffic metrics, receiving traffic metrics from at least a portion of the peers, combining the received traffic metrics, calculating performance of a plurality of possible paths from a source node to a destination node, the nodes being within the SD-WAN topology, and selecting a path from the source node to the destination node based on the calculated performance.