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Leadership Team

photo of Dave Jent

Dave Jent

Associate Vice President of Networks, Indiana University

E-mail: djent@iu.edu

Dave Jent is Associate Vice President of Networks for Indiana University, leading the efforts of the GlobalNOC. Dave also serves as executive director of I-Light and the Indiana GigaPoP.

Photo of Marianne Chitwood

Marianne Chitwood

Director, Operations

Marianne Chitwood leads the Operations team, which runs the GlobalNOC Service Desk. Chitwood has more than 30 years experience working with all aspects of voice and data networks. This strong foundation in network and project management allows her to lead technical staff and manage complex design, installation, and support projects.

Chitwood also loves to cook and entertain friends – talents greatly appreciated by her husband, children, and fellow IU football tailgaters.

Photo of Jon-Paul Herron

Jon-Paul Herron

Executive Director, Internet2 NOC and Engineering

E-mail: jpherron@grnoc.iu.edu

Jon-Paul Herron leads the GlobalNOC's two teams of network engineers, focusing on advanced network troubleshooting, strategic planning, and architecture. He has more than 14 years experience in WAN networking for industry and research and education (R&E), with 10 spent aiding the GlobalNOC's development.

Herron is also Principal Investigator for two projects in the National Science Foundation's GENI program – the GENI Meta-Operations Center (GMOC) and the Midwest OpenFlow Exchange Initiative (MOXI). GMOC focuses on developing a federated operational model for network research, while MOXI works to build a new high-speed R&E regional OpenFlow network research infrastructure throughout the Midwest.

In his spare time, Herron is an occasional builder of furniture – a pursuit tolerated by his understanding wife and son.

Photo of Luke Fowler

Luke Fowler

Director, Software and Systems

E-mail: luke@grnoc.iu.edu
PGP Key ID: 0xBB4735C3
PGP Key fingerprint: FC77 BBF4 2E53 D7D2 5CB8 74D9 0138 8FDE BB47 35C3

Luke Fowler manages three teams of 20 systems and software engineers responsible for the architecture, design, development, and maintenance of the GlobalNOC's network measurement, management, and monitoring systems. He is also the co-principal investigator on the GENI Meta Operations Center (GMOC) project. GMOC is an effort to define and implement operational data sharing systems and procedures for GENI.

Fowler has over 15 years experience building Internet systems, and holds a bachelor's degree in computer science from Indiana University.

Management Team

Photo of Shannon K. Dockter

Shannon K. Dockter

Manager, Project Management

Shannon Dockter leads the GlobalNOC's project management efforts, focusing on creating self-sustaining processes that suit the organization’s goals and needs.

Dockter holds a bachelor's degree from Ball State University and Project Management Professional certification from the Project Management Institute (PMI).

photo of Edward Balas

Edward Balas

Manager, Network Analysis and Control

E-mail: ebalas@grnoc.iu.edu
PGP Key ID: 0x2CD52B0A
PGP Key fingerprint: D338 CC2C 69D2 458D AD71 A95F 94A0 79A1 2CD5 2B0A

Ed Balas manages the software used by the GlobalNOC and its partners to monitor, measure, document, design, and provision networks. He also leads a team of software engineers who work to improve network management and control.

Balas has held several technical and leadership positions throughout his 14-year professional career, including roles at a Tier 1 Internet Service Provider and a network management startup. He places consistent focus on finding ways to make large-scale advanced networks more robust and efficient. Additional interests include automation of network management, network visualization, cartography, computer security, and Software-Defined Networking/OpenFlow.

Balas has a bachelor's degree in computer science and psychology from Saint Joseph’s College. He enjoys spending his free time with family and dabbling in the zymurgical arts.

Photo of David Ripley

David Ripley

Manager, Monitoring, Information, and Infrastructure Systems

E-mail: daripley@grnoc.iu.edu
PGP Key ID: 0x4CF15B04
PGP Key fingerprint: 9C6D FDB9 A8F0 3EBA 0022 DD5A 4630 75EF 4CF1 5B04

David Ripley manages the systems engineering team, which focuses on the design, testing, deployment, and operation of GlobalNOC’s network measurement and monitoring systems.

Prior to joining the GlobalNOC, Ripley served as a researcher and systems integration specialist at Indiana University’s Center for Advanced Cybersecurity Research (CACR). While at CACR, Ripley developed systems for regional, national, and global-scale network protection, data analysis, and performance evaluation.

Ripley's 20-year career in professional programming and systems administration started at Pennsylvania State University's Department of Meteorology, where he conducted research and developed numerical models of land surface processes. Ripley holds degrees from Imperial College, University of London, and the University of Edinburgh.

Photo of Brian McGough

Brian McGough

Manager, Service Management Systems

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Caren Litvanyi

Manager, Internet2/International Engineering

E-mail: litvanyi@grnoc.iu.edu
PGP Key ID: 0xB782C2F4
PGP Key fingerprint: DAA5 215F 6C0E DD23 1937 3322 F278 7582 B782 C2F4

Photo of Caroline Weilhamer

Caroline Weilhamer

Manager, Regionals Engineering

E-mail: ccw@grnoc.iu.edu
PGP Key ID: 0x4BE42614
PGP Key fingerprint: CC32 D960 FABB BECA 740D 8341 2D52 5EF7 4BE4 2614

Caroline is responsible for supporting the I-Light members with their initial connectivity, upgrades to their current connections, and services the members wish to use on the network. She also works with the network planning engineer on the network design and future growth. Caroline earned her Bachelor of Arts degree from Indiana University, awarded at IUPUI.

Caroline enjoys working with the I-Light members to reach their institutional goals by personally helping solve the problems that arise. She is very excited when a member has network or application goals that are achieved by the I-Light network. The success of the I-Light members reflects the success of I-Light as a regional network as a whole.

Photo of Chris Robb

Chris Robb

Senior Manager, Network Partner Engineering

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Jonathan Sherk

Manager, Service Desk Operations

Research and Federal Networks Focus Team: N-Wave, IU Research Network, OSG, GENI

Photo of Chris Robb

Chris Robb

Senior Manager, Network Partner Engineering

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Greg Boles

Network Engineer

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Jared Brown

Network Planning Engineer

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Jason Iannone

Network Planning Engineer

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Jared Schlemmer

Network Engineer

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Jeff Terzino

Network Engineer

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Joe Brown

Service Desk Technician

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Nick Lucas

Service Desk Shift Lead

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Vince Neal

Specialized Support Technician

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Jeremy Oakes

Specialized Support Technician

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Adam Williamson

Service Desk Supervisor

Adam currently supervises the IU Bloomington GlobalNOC facility. In that role, he manages the documentation and specialized support technicians (SST) teams, coordinating their day-to-day operations, meetings, and projects. He also acts as the training coordinator within the Global NOC service desk and participates in project planning efforts.

Adam has more than 12 years of experience in the IT field, focusing on networking, support, and operations. He joined UITS in 2004 and the GlobalNOC in 2006.

Indiana Networks Focus Team: IU Campus, I-Light, Indiana GigaPoP, CIC OmniPoP, University of Indianapolis

Photo of Caroline Weilhamer

Caroline Weilhamer

Manager, Regionals Engineering

E-mail: ccw@grnoc.iu.edu
PGP Key ID: 0x4BE42614
PGP Key fingerprint: CC32 D960 FABB BECA 740D 8341 2D52 5EF7 4BE4 2614

Caroline is responsible for supporting the I-Light members with their initial connectivity, upgrades to their current connections, and services the members wish to use on the network. She also works with the network planning engineer on the network design and future growth. Caroline earned her Bachelor of Arts degree from Indiana University, awarded at IUPUI.

Caroline enjoys working with the I-Light members to reach their institutional goals by personally helping solve the problems that arise. She is very excited when a member has network or application goals that are achieved by the I-Light network. The success of the I-Light members reflects the success of I-Light as a regional network as a whole.

Photo of Sarah Couch

Sarah Couch

Manager of Member Services, I-Light Network

E-mail: sacouch@iu.edu

Photo of Christian Wheeler

Heather Starks

Manager of Education and Outreach, I-Light Network

E-mail: hstarks@iu.edu

Photo of Kapil Agrawal

Kapil Agrawal

Network Engineer

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Damon Beals

Network Engineer

Photo of David Cory

David Cory

Service Desk Network Engineer

E-mail: dcory@grnoc.iu.edu

David is a network engineer within the GlobalNOC operations group, working mainly with the I-Light network and its member community. He also engages in fieldwork around the United States for the many networks managed by the GlobalNOC, including Internet2, NOAA's research network N-Wave, FutureGrid, and the Indiana GigaPoP.

In a career change at age 48, David earned his bachelor of science degree from IUPUI’s School of Engineering in 1999, followed by his CCNA certification in 2000 and employment with IU. In 2005, he collaborated with other higher education institutions to help Hurricane Katrina victims gain IP-based phone and Internet access through the use of portable satellite dish technology—within one week of the disaster.

He now experiences adventure by spending time with his five grandchildren.

Photo of Pete Mason

Pete Mason

Network Engineer

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Nam Nguyen

Network Engineer

Photo of Deval Patel

Deval Patel

Network Engineer

Photo of Christian Wheeler

Christian Wheeler

Network Engineer

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Robert Coombs

Specialized Support Technician

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Joe Marchand

Specialized Support Technician

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CJ Teeple

Service Desk Technician

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Dennis Vandall

Service Desk Technician

Regional Networks Focus Team: PennREN, OneNet, CEN, OSHEAN

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Kalina Dunn

Network Engineer

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Bill Fulk

Network Engineer

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Bethany Alexoff

Service Desk Shift Lead

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Bart Bland

Service Desk Technician

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Paul Brandt

Service Desk Technician

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Samantha Brown

Specialized Support Technician

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Brad Carlson

Service Desk Technician

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Corey Donovan

Service Desk Supervisor

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Elliot Fox

Service Desk Technician

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Jay Jani

Service Desk Technician

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Nizar Louly

Service Desk Supervisor

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David Roark

Service Desk Technician

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Zoey Schutt

Service Desk Technician

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Ben Shively

Specialized Support Technician

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Daniel Spivey

Specialized Support Technician

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Duncan Titus

Service Desk Technician

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Matt White

Service Desk Shift Lead

Internet2/International Focus Team: Internet2, ManLan, WIX, ACE, TransPac3, AMPATH

Photo of Jon-Paul Herron

Jon-Paul Herron

Executive Director, Internet2 NOC and Engineering

E-mail: jpherron@grnoc.iu.edu

Jon-Paul Herron leads the GlobalNOC's two teams of network engineers, focusing on advanced network troubleshooting, strategic planning, and architecture. He has more than 14 years experience in WAN networking for industry and research and education (R&E), with 10 spent aiding the GlobalNOC's development.

Herron is also Principal Investigator for two projects in the National Science Foundation's GENI program – the GENI Meta-Operations Center (GMOC) and the Midwest OpenFlow Exchange Initiative (MOXI). GMOC focuses on developing a federated operational model for network research, while MOXI works to build a new high-speed R&E regional OpenFlow network research infrastructure throughout the Midwest.

In his spare time, Herron is an occasional builder of furniture – a pursuit tolerated by his understanding wife and son.

Photo of nobody

Caren Litvanyi

Manager, Internet2 Network Engineering and Logistics

E-mail: litvanyi@grnoc.iu.edu
PGP Key ID: 0xB782C2F4
PGP Key fingerprint: DAA5 215F 6C0E DD23 1937 3322 F278 7582 B782 C2F4

Photo of Ron Milford

Ron Milford

Photo of Tom Johnson

Tom Johnson

Network Planning Engineer/Architect

E-mail: wtjohnso@grnoc.iu.edu
PGP Key ID: 0xD172E0F8
PGP Key fingerprint: 08DD D996 53ED 3794 65BC E06C ACC2 98FF D172 E0F8

As principal network engineer, Tom focuses on Indiana University's research initiatives and is primarily responsible for network design and management of IU's Research Network, FutureGrid, and GlobalNOC's contribution to GENI's OpenFlow Integrated Backbone.

His recent projects include managing the networking aspects of Research Technologies’ 100GbE Lustre WAN demonstration at SC11 and planning for IU's Monon100, a 100GbE network linking IU to regional and national research networks. In 2012, he is overseeing the implementation and operation of a 100GbE circuit from Indianapolis to Chicago, implementation of hardware upgrades supporting Monon100, and the extension to Bloomington supporting IU's next supercomputer.

Photo of Mike Robbins

Mike Robbins

Network Engineer

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Ross Shaffer

Network Engineer

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Nathan Miller

Network Engineer

Photo of Matt Hoffman

Matthew Hoffman

Network Engineer

Photo of Epaphras Matsangaise

Epaphras Matsangaise

Network Engineer

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Matt Mullins

Network Planning Engineer

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Vadim Petrov

Network Engineer

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Brian Pullin

Network Engineer

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Camille Davis-Alfs

Network Planning Engineer/Architect

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Matt Robertson

Specialized Support Technician

Matt helps bridge the gap between dayshift and nightshift staff to ensure that procedures and policies are distributed accordingly.

Photo of Brooks Etienne

Brooks Etienne

Service Desk Supervisor

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Daniel Hughes

Service Desk Technician

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Raynor Moore

Service Desk Technician

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Josh Edwards

Service Desk Shift Lead

Photo of Matt Petrey

Matt Petrey

Service Desk Technician

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Sean Carver

Service Desk Technician

Internet2 Dedicated Support

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Grover Browning

Photo of Ron Milford

Ron Milford

Monitoring, Information, and Infrastructure Systems

Photo of David Ripley

David Ripley

Manager, Monitoring, Information, and Infrastructure Systems

E-mail: daripley@grnoc.iu.edu
PGP Key ID: 0x4CF15B04
PGP Key fingerprint: 9C6D FDB9 A8F0 3EBA 0022 DD5A 4630 75EF 4CF1 5B04

David Ripley manages the systems engineering team, which focuses on the design, testing, deployment, and operation of GlobalNOC’s network measurement and monitoring systems.

Prior to joining the GlobalNOC, Ripley served as a researcher and systems integration specialist at Indiana University’s Center for Advanced Cybersecurity Research (CACR). While at CACR, Ripley developed systems for regional, national, and global-scale network protection, data analysis, and performance evaluation.

Ripley's 20-year career in professional programming and systems administration started at Pennsylvania State University's Department of Meteorology, where he conducted research and developed numerical models of land surface processes. Ripley holds degrees from Imperial College, University of London, and the University of Edinburgh.

Photo of Daniel Arvesen

Daniel Arvesen

Systems Engineer

Photo of Ty Bell

Ty Bell

Systems Engineer

E-mail: tyabell@grnoc.iu.edu
PGP Key ID: 0xDD6B91D7
PGP Key fingerprint: 73BA 15C4 A5A7 7616 A586 B545 9C9D E4F3 DD6B 91D7

Photo of Ian Bobbitt

Ian Bobbitt

Systems Engineer

E-mail: ibobbitt@grnoc.iu.edu
PGP Key ID: 0xB047BCBB
PGP Key fingerprint: 7E68 9A18 829A 95B5 9DDC CAA5 7590 5DDA B047 BCBB

Photo of Josh Conway

Josh Conway

Systems Engineer

E-mail: jwcrawle@grnoc.iu.edu
PGP Key ID: 0x7D96A12C 
PGP Key Fingerprint: B743 55A2 4EC8 08BB 49DA 9C06 7D65 71C7 7D96 A12C

Photo of Ben Geels

Ben Geels

Software Engineer

Ben Geels is a Software Engineer at the GlobalNOC. He graduated Summa Cum Laude from St. Joseph's College in Rensselaer, Indiana with a bachelor's degree in Computer Science and minors in Art and Mathematics. In his free time he enjoys long walks through the cornfields on Indiana, mountain biking, and painting.

Photo of Nikhil Kappagantula

Nikhil Kappagantula

Software Engineer

Photo of Pairoj Rattadilok

Pairoj Rattadilok

Software Engineer

E-mail: prattadi@grnoc.iu.edu
PGP Key ID: 0x4CB3813F 
PGP Key Fingerprint: A317 1C59 AFB9 E10A 3A08 B297 701B 9F28 4CB3 813F

Photo of Brayton Thompson

Brayton Thompson

Software Engineer

E-mail: thompsbp@grnoc.iu.edu
PGP Key ID: 0x2433EA7D
PGP Key fingerprint: 9589 63A3 6F63 A60B 1D7B FF59 D8AC 5D37 2433 EA7D

Photo of Zachary Torstrick

Zachary Torstrick

Software Engineer

E-mail: ztorstri@grnoc.iu.edu
PGP Key ID: 0x5C2BB065 
PGP Key Fingerprint: AEEB 19AC 9F21 BB0F 3C54 62E1 25ED 3AC1 5C2B B065

Photo of Thomas Wang

Thomas Wang

System Engineer

E-mail: ttwang@grnoc.iu.edu
PGP Key ID: 0x5861A5A4 
PGP Key Fingerprint: D342 4EDF D5C0 1B5A 7B58 C12A 7608 EE10 5861 A5A4

 

Network Analysis and Control

photo of Edward Balas

Edward Balas

Manager, Network Analysis and Control

E-mail: ebalas@grnoc.iu.edu
PGP Key ID: 0x2CD52B0A
PGP Key fingerprint: D338 CC2C 69D2 458D AD71 A95F 94A0 79A1 2CD5 2B0A

Ed Balas manages the software used by the GlobalNOC and its partners to monitor, measure, document, design, and provision networks. He also leads a team of software engineers who work to improve network management and control.

Balas has held several technical and leadership positions throughout his 14-year professional career, including roles at a Tier 1 Internet Service Provider and a network management startup. He places consistent focus on finding ways to make large-scale advanced networks more robust and efficient. Additional interests include automation of network management, network visualization, cartography, computer security, and Software-Defined Networking/OpenFlow.

Balas has a bachelor's degree in computer science and psychology from Saint Joseph’s College. He enjoys spending his free time with family and dabbling in the zymurgical arts.

Photo of Dan Doyle

Dan Doyle

Software Engineer

E-mail: daldoyle@grnoc.iu.edu
PGP Key ID: 0x842FC85B
PGP Key fingerprint: FBE6 B15A F3C6 7E49 6B48 3060 5654 E56B 842F C85B

Photo of AJ Ragusa

AJ Ragusa

Software Engineer

E-mail: aragusa@grnoc.iu.edu
PGP Key ID: 0x312B8774
PGP Key fingerprint: 787A 6598 3960 4FC2 96C0 F5BB 6FDB 7EC6 312B 8774

Andrew (A.J.) Ragusa is a Senior Software Engineer at the GlobalNOC. He has a bachelor's degree in Computer Science from Indiana University, started his career with the GlobalNOC as an intern, and has been a full time employee for the GlobalNOC for more than 8 years. A.J. has a focus on writing and designing software for Software Defined Networking/OpenFlow, Network Management and Network Visualization.

In his free time A.J. enjoys working with a local Wilderness Search and Rescue group and is an active member of the local Amateur Radio club.

Photo of CJ Kloote

CJ Kloote

Principal Systems Engineer

E-mail: ckloote@grnoc.iu.edu
PGP Key ID: 0x8FB5140A
PGP Key fingerprint: 4081 CC9C BAC0 463B C188 0D52 1779 FA6B 8FB5 140A

CJ has 13 years of experience in information technology, including nearly three years with the GlobalNOC. He began his career providing technical support to customers of regional Internet service providers, and went on to manage server infrastructure for web startup companies providing software-as-a-service to businesses. Immediately prior to joining the GlobalNOC, he managed web applications for a large e-commerce site.

Professionally, CJ is interested in modern web operations practices and open source software and how they can be used to reliably deliver software to our clients.

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Uwe Dahlmann

Software Engineer

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Michael Johnson

Software Engineer

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Zachary Catlin

Systems Engineer

E-mail: zcatlin@grnoc.iu.edu
PGP Key ID: 0x5C3BE318
PGP Key fingerprint: D172 04BC 7758 9DF8 14D7 BB3E D25C 6AB6 5C3B E318

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Lisa Ensman

Software Engineer

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Jonathan Stout

Software Engineer

Service Management Systems

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Brian McGough

Manager, Service Management Systems

Photo of Thomas Wang

Thomas Wang

System Engineer

E-mail: ttwang@grnoc.iu.edu
PGP Key ID: 0x5861A5A4 
PGP Key Fingerprint: D342 4EDF D5C0 1B5A 7B58 C12A 7608 EE10 5861 A5A4

 

Photo of Alex Yong

Alex Yong

Software Engineer

E-mail: ajyong@grnoc.iu.edu
PGP Key ID: 0xF250C4BF 
PGP Key Fingerprint: E28C 390F 2B4A EA42 2535 2E96 862C 538A F250 C4BF

Alex Yong is a Software Engineer at the GlobalNOC. He started his work with the GlobalNOC during the 2012 Summer of Networking internship program. Today, he aids in the development of the many tools needed to make the GlobalNOC's mission a success.

Yong graduated from Saint Joseph's College with a major in Computer Science and a minor in Psychology.  In his free time, he is an avid distance runner. He also enjoys creative writing; contributing to Internet resources such as Wikipedia; and cooking and baking a wide variety of foods, with an interest in anything Italian.

Photo of Nathan Samano

Nathan Samano

Systems Engineer

Logistics

Photo of Steve Sanderson

Steve Sanderson

Logistics Staff

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Erik Ward

Logistics Staff

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Cassie Dewitt

Logistics Staff

Project Management

Photo of Shannon K. Dockter

Shannon K. Dockter

Manager, Project Management

Shannon Dockter leads the GlobalNOC's project management efforts, focusing on creating self-sustaining processes that suit the organization’s goals and needs.

Dockter holds a bachelor's degree from Ball State University and Project Management Professional certification from the Project Management Institute (PMI).

Photo of Stephen F. Peck

Stephen F. Peck

GlobalNOC Business Development Consultant

Steve Peck oversees the GlobalNOC's contractual responsibilities, provides high-level support and assurance for its customers, and develops new business opportunities. He has 20 years experience in network operations and customer relations, with strong expertise in operational best practices and new NOC development.

Peck is also an avid record collector and music fan.

Photo of Terry Broadstreet

Terry Broadstreet

Project Manager

E-mail: broadstt@iu.edu