Ashwin Gumaste, Ph. D

James R. Isaac Chair, Department of Computer Science and Engineering, Indian Institute of Technology, Bombay.  Convener, Gigabit Networking Laboratory.

Visiting Scientist, Research Laboratory in Electronics (RLE) EECS, Massachusetts Institute of Technology, Cambridge, USA.

Research Interests:

Optical Networks: metro and access optical networks. Wavelength services, provisioning of Triple Play and PWE3 services over novel metro architecture. PBB-TE, T-MPLS, MPLS-TP concepts over Metro Ethernet. 100 Gigabit Ethernet MAC, Multi-degree ROADMs, optical + wireless integration and Photonic Integrated Circuits.

Access Networks: GEPON, 10GE PON, alternate PON models, traffic engineering in the access area.

Metro and Enterprise Networks: Storage area networking, Data Centers, Cloud Computing, Application Oriented Networks (AONs) and Metro Ethernet.

Network Algorithmics: Traffic grooming, application of auctioning techniques, concurrency models, non-linear-non-convex optimization, utility models.

Consulting activities: I have engaged in the past vendors, providers, carriers and network integrators. I also have served as subject matter expert, expert witness and portfolio evaluator for telco and broadband networks.

Email: ashwing [AT] ieee [DOT] org.

I blog here

Research activities and Announcements:

New! Ashwin Gumaste named Govt of India's  DAE-SRC Outstanding Research Investigator (August 2010).

New!!! Our paper on Broadband Services in India is covered on the front page of "The Hindu" one of India's leading newspapers. The article is here.

New Gigabit Networking Laboratory website launched.

New!  NINE new US Patents issued to Ashwin Gumaste and his collaborators, taking total tally to 18 US patents.

New!! Our Omnipresent Ethernet test-bed is now up and running. It is passing Triple Play Traffic at this time. A post-deadline paper at OFC 2009 was also presented on this concept by our group.

New!! Our IITB DynaSPOT (Dynamic Service Provisioned Optical Transport) Test-Bed is functional and is shown here through a paper (OFC 2007 post deadline). It is a state of the art low-cost metro network that can provision sub-wavelength traffic for various services (like VoIP, PWE3, Storage and Video) using SLiT (Strongly Connected Light-trail) Technology.

In the news: Economic Times, CIOL, Money Control, ITNewsOnline and Var India.

Keynote talk: Metro optical networks: covered in the news here and here.

Vita:

Experience:

I have worked with Cisco Systems in the Optical Networking Group (ONG), Fujitsu Laboratories in Photonic Networking Research Group, Fujitsu Network Communications in the Photonics Networking Laboratory (PNL), Business Communication Networks as a Consultant, a faculty member in the CSE department at the Indian Institute of Technology, Bombay and the Research Laboratory in Electronics at Massachusetts Institute of Technology, (MIT). 

Technical Publications:

Ph. D Thesis: Light-trail and Light-frame Architectures for Optical Networks, Fall 2003 UT-Dallas. Contribution: proposed the dual frameworks of light-trails and light-frames. Advisor Imrich Chlamtac (Fellow IEEE, ACM)

Books:

1. DWDM Network Designs and Engineering Solutions, by Ashwin Gumaste and Tony Antony Cisco Press. Dec 18 2002 Was ranked in Top 300 Network Book Seller. Referred widely by both industry and academia, reviewed by Optical Networks Magazine October 2003

2. First Mile Access Networks and Enabling Technologies, by Ashwin Gumaste and Tony Antony McMillan publishers Feb 2004  (reviewed by IEEE Communications Magazine, Sept 2004 pg 13-14)

3. Broadband Services: Business case and Technology for Community Networks, by (Ed) Imrich Chlamtac, Ashwin Gumaste and Csaba Szabo – (Feb. 2005) Publisher John Wiley and Sons

4. Metro Services: Technologies and Business Solutions, under preparation (2009) to be published by John Wiley, June 2011.

Journal papers:

1. A. Gumaste, S. Mehta, I. Arora, P. Goyal, S. Rana and N. Ghani, "Omnipresent Ethernet: Design Choices and Technology Drivers for Future Internet, " IEEE Journal of Lightwave Technology, JLT, 2010 April 2010, pp 1191-1215.

2. A. Gumaste, S. Mehta, R. Vaishampayan and N. Ghani, "Demonstration of Omnipresent Ethernet: A Novel Metro End-to-End Communication System using Binary+Source Routing and Carrier Ethernet," IEEE Journal of Lightwave Technology, 2010 March 2010.

3. A. Gumaste and N. Krishnaswamy, "Proliferation of ITU 709 - Optical Transport Network (OTN) – A Use Case Based Study," to appear IEEE Communications Magazine, September 2010.

4. S. Zheng and A. Gumaste, "A parallel self-routing re-arrangeable non-blocking multi-log_2 N photonic switching network,"  IEEE/ACM Transactions on Networking April 2010. 

5. Y. Li, J. Wang, A. Gumaste, Y. Xu and Y. Xu, "Integrated Fiber-Wireless Access Networks Supporting Heterogeneous Wireless Clients," accepted and to appear IEEE Journal of Lightwave Technology, 2010.

6. A. Gumaste, A. Dhar and P. Gokhale, "On the State and Guiding Principles of Broadband in India,"  IEEE Communications Magazine, August 2009.

7. M. Esmaeili, F. Xu, M. Peng, N. Ghani, A. Gumaste, J. Finochietto, “Enhanced Crankback Signaling for Multi-Domain IP/MPLS Networks,” to appear in Computer Communications, 2010.

8. Jing Chen, Jianping Wang, Ashwin Gumaste, and S.Q. Zheng, "Fully Distributed Work-Conserving MAC Protocols for Opportunistic Optical Hyperchannels", accepted to appear in IEEE Transactions on Communications, 2009.

9. Guest Editorial, C. Saradhi, A. Gumaste, I. Tomkos and D. Kipler, Protocols and Algorithms for Future Cross­Layer and Hybrid Optical Networks, IEEE Network Magazine May 2009.

10. A. Gumaste and T. Antony, "Data Center Networking and Cloud Computing - A Networking Overview"  Embedded Technology Brief 2009.

11. A. Gumaste, N. Ghani P. Bafna, A. Lodha, A. Agrawal T. Das and S. Zheng, "DynaSPOT: Dynamic Services Provisioned Optical Transport Test-bed - Achieving Multi-Rate Multi-Service Dynamic Provisioning using Strongly connected Light-trail (SLiT) Technology," in IEEE Journal of Lightwave Technology, Jan 2008. 

12. Editorial: Nasir Ghani, Ashwin Gumaste, Mohan Gurusamy, Biswanath Mukherjee, Suresh Subramaniam: Selected papers from First International Symposium on Advanced Networks and Telecommunication Systems (ANTS 2007). Optical Switching and Networking 6(1): 1-2, 2009

13. A. Gumaste, D. Diwakar, A. Agrawal, A Lodha and N. Ghani, "Light-Mesh - A Pragmatic Optical Access Network Architecture for IP-Centric Service Oriented Communication" Invited paper, Elseiver Optical Switching and Networking Journal (OSN) 2008, April 2008.

14. N. Ghani, Q. Liu, A. Gumaste and Nagi Rao, "Control Plane Design in Multi-domain/Multi-granularity Optical Networks," IEEE Communications Magazine, 2008, July 2008. 

15. N. Ghani, Q. Liu, A. Gumaste, J. Lankford, A. Shami, C. Assi, A. Khalil, D. Benhaddou, "Value-Added Services in Next-Generation SONET/SDH Networks," in IEEE Communications Magazine, Dec. 2008.

16. Q. Liu, N. Ghani, A. Gumaste, "Routing Scalability in Multi-Domain DWDM Networks, Photonic Network Communications (PNET) 2008.

17. N. Ghani, Q. Liu, M. Kok and A. Gumaste, "Hierarchical Routing and Lightpath Provisioning in Distributed Multi-Domain Optical Networks," conditional acceptance in IEEE Journal on Selected Areas in Communication (JSAC) 2008

18. Guest Editorial: V. Sharma, T. Nadeau and A. Gumaste, "Next Generation Carrier Ethernet," IEEE Communications Magazine, March 2008.

19.  V. Sharma and A. Gumaste, “Designing Converged Optical Ethernet Networks,” Photonic Technology Briefs Magazine, Feb. 2008.

20. P. Bafna, A. Gumaste and N. Ghani, "Delay Sensitive Smoothed Round Robin (DS2R2) Scheduler for High Speed Optical Networks," IEEE Communication Letters Vol. 11. No 7 July 2007.

21. J. Wu Q. Zheng, A. Gumaste and C. Xiao, "Error Performance of Double Space time Transmit Diversity System," IEEE Transactions on Wireless Communications Vol. 6 No 9 Sept 2007

22. Q. Liu, N. Ghani, Nagi Rao and A. Gumaste, "Distributed Inter-Domain Lightpath Provisioning in the Presence of Wavelength  Conversion" in Elsevier's Computer Communications Journal July 2007

23. A. Gumaste and S. Q Zheng, “ Light-frames - Pragmatic Framework for Optical Packet Transport: Extending Ethernet LANs to Optical Networks,” IEEE/OSA Journal on Lightwave technology October 2006.

24. A. Gumaste and S. Q. Zheng, “Optical Storage Area Networks: The Light-trails Approach,” in IEEE Communications Magazine March 2005 pp 72-78 Vol. 21. No. 3.

25. A. Gumaste and P. Palacharla, “Heuristic and Optimal Assignment Techniques for Light-trail Ring WDM Networks,” in Elsevier's Computer Communications Journal (CCJ) October 2006.

26. S. Q. Zheng and A. Gumaste, "Scalable and Practical Nonblocking Switching Networks,"  Journal of Computer Science and Technology July 2006.

27. Q. Liu, M. A. Kök, N. Ghani, A. Gumaste^, "Hierarchical Routing in Multi-Domain Optical Networks," in Computer Communications October 2006

28. Q. Liu, M. A. Kök, N. Ghani, A. Gumaste, “Hierarchical Inter-Domain Routing and Lightpath Provisioning in Optical Networks”, in OSA Journal of Optical Networking, May 2007

29. A. Gumaste and I. Chlamtac, “Light-trails: An Optical Solution for IP Transport” Invited paper Optical Society of America, (OSA) Journal of Optical Networking (JON) May  2004. pp 261- 281

30. A. Gumaste, “TIONets Triangular interconnection of optical networks” IEEE Communication Letters, Vol 6 No 2 Pg 83-85 Feb 2002

31. A. Gumaste N. Pissinou and K. Makki “PIONets: Polyhedral Interconnection of Optical Networks”  Journal of Computer Science and Information Management, Special Issue July 2000 Vol 1. No 4.

32. under major revision: A. Gumaste, J. Chandarana, N. Ghani and V. Sharma, “Service Aware Control Mechanisms for Light-trail WDM Networks,” under major revision IEEE journal.

Conference Papers:

1. P. Gokhale, R. Kumar, T. Das and A. Gumaste, "Cloud Computing over Metropolitan Area WDM Networks: The Light-trails Approach", 53rd IEEE Globecom 2010, Miami, December 2010.

2. A. Gumaste, S. Bidkar, C. Taunk and D. Bhamare, "Using MPLS-TP for Data-Center Interconnection" Invited paper, Broadnets 2010, Athens Greece Oct 2010

3. J. Wey, C. Babstieber, A. Gumaste, A. Noorozifar, A. Tiexiera, K. Pulverer and H. Rohde, "Virtualized Passive Optical Metro and Access Networks" ITU-T Kalidoscope Beyond the Internet - Innovations for future networks and services Pune, India, 2010.

4. A. Gumaste, S. Mehta, S. Rana and T. Das "OBiS: Optical Bit Switching – A Switch Architecture for Optical Omnipresent Ethernet " 26th IEEE/OSA Optic Fiber Conference (OFC), March 2010, San Diego.

5. P. Gokhale, T. Das and A. Gumaste, "Cloud Computing over Light-trail WDM Core Networks ",26th IEEE/OSA Optic Fiber Conference (OFC), March 2010, San Diego (nominated for Corning Best Paper award).

6. U. Manyam, J. Parab, A. Gumaste, "Experimental Demonstration for the Need for Carrier Ethernet in Mission Critical Networks",  26th IEEE/OSA Optic Fiber Conference (OFC), March 2010, San Diego.

7. A. Gumaste, "Maximizing Network Capacity using the Reach Optimized Architecture for Multi-rate Transport System (ROAMTS)," Photonics in Switching, Monterey CA, USA, July 2010

8. A. Gumaste, "Deciphering Omnipresent Ethernet: An All Ethernet Communication System – The Control Plane," Invited paper, ICTON 2010.

9. A. Gumaste, "Achieving Nanosecond Switching Time for Intra-Data-Center Connectivity - The Omnipresent Ethernet Approach", in the 6th International Conference on IP + Optical Networks IPOP 2010, NTT center Japan.

10. A. Gumaste, M. Chamania and A. Jukan, "An End-to-End Addressing and Routing Scheme in all-Ethernet Wide-Area Networks" 44th IEEE International Conference on Communications (ICC), Dresden Germany, 2009.

11. A. Gumaste and A. Somani, "Scheduling Algorithms in LiTPiC – Digital Optical Networks using Light-trails and Photonic Integrated Circuits," 52nd IEEE Globecom, Honolulu, Dec. 2009.

12. A. Gumaste, M. Tatipamula and A. Guetari, "Cloud Computing using Advanced Optical and Ethernet Technologies," Invited Paper, Gridnets 2009, Athens, Greece.

13. A. Gumaste, S. Jain and A. Somani, "A Superscheduler Architecture for Computational Grids using Light-trail WDM networks," Invited Paper, Proceedings of the 6th, Broadnets Conference, Madrid, Spain, 2009.

14. Q. Liu, T. Frangieh, F. Xu, C. Xie, N. Ghani, A. Gumaste, T. Lehman, Chin Guok, "Distributed Grooming in Multi-Domain IP/MPLS-DWDM Networks," 52nd IEEE Globecom Honolulu, Dec 2009

15. S. Mehta, R. Vaishampayan and Ashwin Gumaste, "Omnipresent Ethernet: A Novel Metro Communication System using Binary + Source Routing and Carrier Ethernet," Post Deadline Paper, 25th IEEE OSA Optic Fiber Communications (OFC) conference, 2009, San Diego, USA, March 2009.  

16. R. Vaishampayan, A. Gumaste, S. Rana and N. Ghani, "Application Driven Comparison of T-MPLS/MPLS-TP and PBB-TE – Driver Choices for Carrier Ethernet," IEEE Infocom Workshop on High-Speed Networks, Rio di Janerio, 2009.

17. A. Gumaste, J. Wang, A. Karandikar and N. Ghani, "Multihop Light-trail Networks," 44th IEEE International Conference on Communications (ICC), Dresden Germany, 2009.

18. C. Xie, N. Ghani, Q. Liu, W. Shu, A. Gumaste, “Multi-Point Ethernet over Next-Generation SONET/SDH,” to appear 44th IEEE International Conference on Communications (ICC), Dresden Germany, 2009.

19. N.Ghani, S.Seethamraju, Q.Liu, R. Wang, Y. Qiao, A. Gumaste, "Dynamic Topology Overlays for Multipoint Ethernet-over-SONET/SDH", to appear in ITC 21, Paris, France, September 2009.

20. A. Gumaste, "Towards a Transponder for Serial 100 Gigabit Ethernet Using a Novel Optical SERDES,"25th, IEEE/OSA Optic Fiber Communications Conference (OFC) 2009, San Diego.

21. A. Gumaste and N. Ghani, "Reach Optimized Architecture for Multi-Rate Transport System (ROAMTS): One Size Does Not Fit All" 25th, IEEE/OSA Optic Fiber Communications Conference (OFC) 2009, San Diego.

22. A. Gumaste, T. Das, R. Vaishampayan and N. Ghani, "Light-Mesh: An Evolutionary Approach to Optical Packet Transport in Access Networks," 25th, IEEE/OSA Optic Fiber Communications Conference (OFC) 2009, San Diego.

23. C. Xie, N. Ghani, Q. Liu, W. Shu, A. Shami, A. Gumaste, Y. Qiao and Q. Yu, "Multi-point-to-Multi-Point Ethernet over SONET/SDH," 25th, IEEE/OSA Optic Fiber Communications Conference (OFC) 2009, San Diego.

24. A. Gumaste, "Omnipresent Ethernet - A Solution to Scalable, Service Oriented Future Internet Design," Invited Paper, 13th Optical Network Design and Modeling Conference (ONDM), Braunchwieg, Germany, 2009.

25. A. Gumaste, N. Ghani and V. W. S. Chan, "CAMPUS: A Metro Framework to Guaranteed Optical Service Provisioning," Invited paper, Broadnets 2008, London, September 2008.

26. A. Gumaste, "Carrier Ethernet driven Network Architecture for Enterprise Optical Networks," Invited Paper, 8th SPIE Asia Pacific Optical Communications Conference, APOC 2008 Hangzhou, China, October 2008.

27. A. Gumaste, "When Switching is Better than Routing - the CAMPUS approach" Invited paper, IEEE HONET, High-speed Optical Networks conference, Malaysia

28. A. Lodha, A. Gumaste, J. Wang and N. Ghani, "CAVALIER: A Data Center Metro Networking Architecture," Invited paper, 3rd Workshop on Guaranteed Optical Service Provisioning, GOSP, London, September 2008.

29. Y. Li, J. Wang, A. Gumaste and Y. Xu, "Multicast Routing in Light-trail WDM Networks," 51st. IEEE Global Comm. Conference Globecom 2008, New Orleans.

30. G. Liu, C. Xie, T. Frangieh, N. Ghani^, A. Gumaste, N .S. V. Rao, T. Lehman, "Inter-Domain Routing Scalability in Optical DWDM Networks," Best paper candidate, IEEE International Conference on Computer Communication Networks, ICCCN, 2008,US Virgin Islands.

31. J. Chen, J. Wang, H. Yu, A. Gumaste, S. Zheng, “1-persistent Collision-Free CSMA Protocols for Opportunistic Optical Hyperchannels”, Best Paper, The 8th International Conference on Algorithms and Architectures for Parallel Processing, 2008.

32. A. Gumaste, A. Jukan, A. Lodha, C. Xue and N. Ghani, “A Novel Node Architecture for Light-trail Provisioning in Mesh WDM Metro Networks,” in IEEE./OSA 24^th Optic Fiber Communications (OFC) conference 2008.

33. A. Agrawal, A. Gumaste, M. Chamania, N. Ghani, “Topology Abstraction Algorithms for Light-Mesh: An Alternate Model for PONs” in IEEE./OSA 24^th Optic Fiber Communications (OFC) conference 2008.

34. A. Gumaste and N. Ghani, “LiTPiC – Light-trails and Photonic Integrated Circuits: Issues of Network Design and Performance”, 32^nd IEEE Conference on Local Computer Networks (LCN 2007), Dublin, Ireland, October 2007.

35. A. Gumaste, R. Singhai and A. Sahoo, "Intelligent Vehicular Transportation System (InVeTraS)," in IEEE ATNAC, Australasian Telecommunication Networks and Applications Conference, Christchurch New Zealand Dec 2007.

36. A. Gumaste, N. Dhanuka, A. Lodha and N. Ghani, "Long Reach Optical Access Networks using Light-trails,"  IEEE Globecom 2007, Washington DC. Dec. 2007. 

37. A. Gumaste, A. Lodha, J. Wang and S. Zheng, "Generalized ROADM/Light-trail Assisted Hand-Off for Wireless Metro Networks" to appear in the 7th The 10th International Symposium on Wireless Personal Multimedia Communications (WPMC), Jaipur, India, Dec. 2007.

38. A. Gumaste, N. Ghani, P. Bafna, A. Lodha, S. Srivastava, T. Das and S. Zheng, "Achieving Multi-Rate Dynamic Sub-Wavelength Service Provisioning in Strongly connected Light-trails (SLiTs)," POST DEADLINE PAPER IEEE/OSA OFC Optic Fiber Conference, Anaheim, CA March 2007.

39. A. Gumaste, J. Chandarana, P. Bafna, N. Ghani and V. Sharma, "On Control Plane for Service Provisioning in Light-trail WDM Optical Networks," in the 42nd IEEE Intl Conf on Commun. (ICC) Glasgow UK 2007.

40. A. Lodha, A. Gumaste, P. Bafna and N. Ghani, "Stochastic Optimization of Light-trail Optical WDM Ring Networks using Bender's Decomposition," in the 11th IEEE High Speed Routing and Switching (HPSR) conference, NY, June 2007.

41. K. Lu, T. Zhang, S. Zheng and A. Gumaste, "A Design Principle for Future High-speed Networks," High Speed Networks Workshop as part of Infocom 2007, Ankorage Alaska May 2007.

42. A. Gumaste, R. Singhai and A. Sahoo, "Intellicarts: Intelligent Car Transportation System," in the 15th IEEE Local Area Networks and Metro Area Networks (LANMAN) 2007, Princeton NJ.

43. A. Gumaste, "Electrigence: Electrical distribution networks with added Intelligence for Home/Office Automation and Control", IEEE International Symposium on Power Line Communications (ISPLC) 2007 Pisa Italy.

44. P. Bafna, A. Gumaste and N. Ghani, "Delay Sensitive Smoothed Round Robin (DS2R2) Scheduler for Light-trail and SLiT Networks," in 24th OSA/IEEE Optical Fiber Communications Conference, OFC 2007, Anaheim CA USA.

45. A. Gumaste and N. Ghani, "TEDION: Terabit Digital Optical Networks Based on Light-trails and Photonic Integrated Circuits for Low Cost and Dynamic Communication," 3rd IEEE International Symposium on High Capacity Optical Networks and Enabling Technologies (HONET 2006), Charlotte, NC, USA from September 6-8, 2006, USA.

46. K. Natarajan, A. Gudhe, Ashwin Gumaste and N. Ghani, " A Novel K-out-of-N Auction Mechanism and Strategic Scaling for Dynamic Bandwidth Allocation in GE-PON," to appear 49th IEEE Global Communications Globecom 2006 San Francisco, CA, USA.

47. S. Q. Zheng, A Gumaste and H. Shen, "A Rearrangeable Nonblocking Multi-log_2 N Multicast Switching Network," to appear 49th IEEE Global Communications Globecom 2006 San Francisco CA.

48. S. Q. Zheng and A. Gumaste, "SMART: Scalable Multi-Access Reconfigurable Transport: A New Optical Architecture for Future Internet," Invited paper IEEE Broadband Networks, Broadnets General Symposium San Jose CA 2006, USA.

49. A. Gumaste, P. Palacharla and T. Naito, “Experimental Demonstration for Static and Dynamic Control for Light-trail Networks,” 11th Opto-Electronic Communications Conference OECC 2006, Taiwan.

50. A. Gumaste, S. Jain and S. Q. Zheng, “SLiT: Strongly connected Light-trail solution for Cost Efficient and Dynamic Optical Networking,”  22nd IEEE/OSA Optical Fiber Communications Conference OFC 2006 Anahiem CA.

51. A. Gumaste, N. Ghani and S. Q. Zheng, “Light-trains: A Cross Layer Delivery Mechanism for High Bandwidth Applications in Moving Metro Trains,”  41st IEEE Int’l Conf. on Commun. (ICC) 2006 Istanbul Turkey.

52. P. Palacharla, A. Gumaste, E. Biru and T. Naito, “Implementation of Burstponder Card for Ethernet Grooming in Light-trail WDM Networks,”  41st IEEE Int’l Conf. on Commun. ICC 2006 Istanbul Turkey.

53. J. Wu, C. Xiao and A. Gumaste, "Error Performance of Double Space Time Transmit Diversity System" 41st IEEE Intl Conf on Commun. ICC 2006 Istanbul Turkey.

54. A. Gumaste, S. Jain, N. Ghani and S. Q. Zheng, “SLiT (Strongly connected Light-trail) for WDM Ring Networks,” 7th IEEE International Symposium on Computer Networks ISCN 2006 Istanbul Turkey.

55. G. Chen, S. Zheng and A. Gumaste, "QoS Assuring Access Control Protocols for Hyperchannels in SMART Network," 19th Parallel and Distributed Computing Systems PDCS 2006, Dallas TX

56. B. Yang, A. Gumaste, E. Lu and S.Q Zheng "Message Scheduling on a Wormhole-Switched Linear Client-Server Network", to appear in Proceedings of the 19th International Conference on Parallel and Distributed Computing Systems.

57. S. Zheng and A. Gumaste, "A Fast Parallel Routing Architecture for Clos Networks," in IEEE/ACM Architectures for Networking and Communications Systems ANCS, Washington, 2006.

58. A. Gumaste and S. Q. Zheng, “Dual Auction and Recourse Technique for Light-trail Assignment,” 3rd IEEE WOCN Wireless and Optical Communication Networks Conference. 

59. S. Q. Zheng and A. Gumaste  "Virtual Nonblocking Switching Networks," Proceedings of the 17th International Conference on Parallel and Distributed Computing and Systems (PDCS 2005), pp. 742-748, 2005.

60. A. Gumaste, P. Palacharla and T. Naito, “Performance Evaluation and Demonstration of Light-trails in Shared Wavelength Optical Networks (SWON) ", 31st European Conf. On Optical Communication (ECOC) 2005 Glasgow

61. A. Gumaste, “Optimal and Heuristic Assignment for Light-trail Assignment,” 13th Symposium on Perf. Evaluation on Computers and Telecommunications (SPECTS), Philadelphia July 2005

62. A. Gumaste, P. Palacharla and S. Kinoshita, “Light-trail based Shared Wavelength Optical Network,” 10th Opto-Electronics Communication Conference (OECC) 2005 Korea

63. A. Gumaste and S. Q. Zheng, “Protection Mechanism in Light-trail Networks”, 9^th Optical Network Design and Modeling (ONDM) conference Feb. 2005

64. A. Gumaste and S. Q. Zheng, “Optical Implementation of Resilient Packet Rings using Light-trails,” 21st Prof. of Optical Fiber Conference/National Fiber Optic Engineers Conf. NFOEC/OFC 2005, CA

65. A. Gumaste and D. Bihon, “Dual Layered Wavelength Banded Digital X Connect: Architecture for Low Cost Sub-Lambda Granular Optical Networks” 21st Proc. of  NFOEC/OFC 2005

66. A. Gumaste, G. Kuper and I. Chlamtac, “Optimizing Light-trail Assignment to WDM Networks for Dynamic IP Centric Traffic”  13^th  IEEE Local area networks and metro area networks, LANMAN Workshop, San Francisco 2004 .

67. C. Tian, A. Gumaste and S. Kinoshita, “Shared Protection with Selective Regeneration in Flexible WDM Networks,” 30th ECOC European Conf on Optical Comm. Stockholm Sweden 2004

68. Ashwin Gumaste, Imrich Chlamtac and Jason Jue, ‘Light-frames: Pragmatic Implementation for Optical Packet Transport,’ 39th IEEE International Conference on Communication ICC 2004 Paris France

69. A Gumaste and I. Chlamtac, ‘Mesh Implementation of Light-trails,’ IEEE Proceedings of International Conference on Communication (12^th)  ICCCN Dallas, October 20. 2003.

70. A. Gumaste, “Light-trails as a SAN solution: Providing Dynamic Synchronous and Multicasting connections in optical networks,” SPIE, Opticomm, 2003, in Workshop on Optical Networking Solutions for Global SAN, (ONSAN). Dallas TX. Oct 13 2003.

71. A. Gumaste and I. Chlamtac, ‘Adaptations to a GMPLS framework for IP over Optical Communication: The light-trails Approach,’ National Fiber Optic Engineers Conferences, (NFOEC) Orlando September 8^th 2003

72. A. Gumaste, and I. Chlamtac, ``Distributed Protection Scheme for WDM Mesh Networks ", Second International Conference on Optical Communications and Networks, (ICOCN 2003), Bangalore, India, October 2003.

73.  A. Gumaste and I. Chlamtac, "An Efficient Protocol for Communication in a Passive Optical Network,"  38th IEEE Proc of International Conference on Communication (ICC) 2003 Anchorage, Alaska, May 2003

74. Ashwin Gumaste and Imrich Chlamtac, "Transmission Upon Reception: An Efficient Protocol for Ethernet over Passive Optical Networks’, 8^th Optical Network Design and Management (ONDM) 2003 Budapest Hungary February 2003

75. I. Chlamtac and A. Gumaste, ‘Light-trails: A Solution to IP Centric Communication over Optical Networks,’ IEEE 2^nd Quality of Service in IP Networks QoS IP,  Milan Italy,

76. Ashwin Gumaste and I. Chlamtac, “Light-trails: A Novel Conceptual Framework for Conducting Optical Communications, 3rd IEEE Workshop on High Performance Switching and Routing, Proceedings of HPSR 2003 Torino Italy June 2003 (First paper proposing the light-trail concept)

77. G. Zeng, I. Chlamtac and A Gumaste, "Computational Aspects of Blocking Probability in Cellular Networks," Wireless Networking Symposium, WNCG 2003 Austin Texas USA

78. G. Zeng, I. Chlamtac and A. Gumaste, "Analysis of Blocking Probability in Optical Burst Switching," 3rd SPIE Opticomm – Workshop on Optical Burst Switching (WOBS) workshop 2003.

79. A. Gumaste and I. Chlamtac, "Protection of Lightpaths using Alternate Routing in WDM Mesh Networks," Proc. Intl Conf on Optical Comm (ICOCN) Networks, Singapore 2003

80. I. Chlamtac and A. Gumaste, ‘Bandwidth Management in Community Networks,’ Key note address International Workshop on Distributed Computing IWDC 2002 Dec 29^th 2002 Calcutta, India (Paper published by Springer Verlag)

81. A. Gumaste, S. Kinoshita and G. Castanon “Benefits of Optical Subnets” First International Conference on Optical Networks (ICOCN) Singapore Nov 2002.

82. A. Gumaste and J. Jue, ‘A Protocol for scheduling bursts and guaranteeing QoS in optical burst switched networks’ First International Conference on Optical Networks (ICOCN) Singapore 2002.

83. A. Gumaste, D. Bihon, S. Kinoshita and E. Koopferstock, “A Comparison of WDM Network Topologies” International Conference on Computer Communications, (ICCC) Mumbai August 2002

84. A. Gumaste S. Kinoshita, K. Takeguchi and G. Castanon, ‘BITCA: Bifurcated interconnected to channel assignment in metro WDM rings’ Proceedings of Optical Fiber Communications Conference (OFC) Anaheim CA, 2002

85. A. Gumaste et al ’Routing in TIONets: Store and Forward versus the Hot Potato Approach’ Symposium on Performance Evaluation in Computers and Telecommunication Systems (SPECTS) 2001

86. K. Makki and A. Gumaste, ’Hybrid Optical over wireless system’ Proceedings of Wireless Communications and Networking Conference (WCNC) 2000, Chicago.

Patents (pending or approved):

• Architectures for Implementing SWON over light-trails, Fujitsu Laboratories, IDR # 471, (with P. Palacharla and S. Kinoshita)

• Control Mechanisms for Shared Wavelength Optical Networks, Fujitsu Laboratories, IDR # 472

• Heuristic Algorithms for Light-trail Assignment in WDM Ring Networks, Fujitsu Laboratories, IDR # 480

• Arbiter-less auction method for control on light-trail networks, Fujitsu Laboratories IDR # 482

• Idle Work generation and traffic engineering in light-trail networks, Fujitsu Laboratories, IDR # 475

• Method and Apparatus for Heuristic Channel and Path Assignment in Low OpEx Networks, Fujitsu Laboratories, (with Richard Rabbat) IDR # 470

• Protection Mechanisms in Light-trail Networks Fujitsu Laboratories of America IDR # 469

• Modifications to Wavelength Selectable switch architectures for creating meshed light-trails, Fujitsu Laboratories  IDR 484

• Method and System for allocation of bandwidth in light-trails, Fujitsu Laboratories IDR 482

• Design of 2xN WSS device, Fujitsu Laboratories IDR 484

• Business continuance and Disaster Recovery in Hub and Spoke WDM networks, Fujitsu Laboratories of America IDR # 460 (with P. Palacharla and S. Kinoshita)

• VLAN Mapping for Broadcast and Select Photonic Hub and Spoke Networks using Layer 2 Switches Fujitsu laboratories of America IDR # 459 (with R. Valisammagari)

• Sub-lambda Network for Hub and Spoke WDM rings Fujitsu Laboratories of America FLA Docket IDR # 451 (with R. Valisammagari)

• Efficient Traffic Management and Reducing Switch Complexity in Hub and Spoke Data Networks, Fujitsu Laboratories of America FLA Docket IDR #454 (with S. Kinoshita)

• Method and Apparatus to Managing and Provisioning Heterogeneous Optical Networks, Fujitsu Laboratories of America FLA Docket IDR # 448

• WABDX: Waveband Dual Cross Connect for Multi-granular Traffic Fujitsu Laboratories of America FLA Docket IDR 444 (with D. Bihon)

• Method and Apparatus for Burstponder Design for Light-trail networks, IDR # 474 Fujitsu Laboratories (with P. Palacharla)

• VLAN Mapping for Broadcast and Select Photonic Hub and Spoke Networks using Layer 2 Switches, Fujitsu Laboratories of America FLA Docket IDR # 459

• Virtual Fairness and Design Consideration in Light-trail Networks, Fujitsu laboratories of America IDR # 467

• Hybrid Protection in Ring Optical Networks using Limited Wavelength Conversion: Method  (for  Fujitsu Laboratories)

• Interconnection of nodes in an optical network- Fujitsu Network Communications: FNC Docket US: 15437 (through Baker Bott LLP) IDR # 214

• Routing and Channel Assignment to metro Rings- Fujitsu Network Communications FNC Docket US: 15419 (through Baker Bott LLP) IDR # 230

• Optical Subnets: A unique way to increase bandwidth in optical rings- Fujitsu Network Communications FNC Docket #: 15422 through Baker Bott LLP) IDR # 231

• Wavelength Conversion in Optical Subnets- Fujitsu Network Communications FNC Docket #: 15481 IDR # 333

• In-Service procedure to upgrade network elements in WDM ring network- Fujitsu Network Communications FNC Docket 15402 IDR # 386

• Protection in Optical networks using inter-leavers- Fujitsu Network Communications FNC Docket # 15466 IDR # 370

• Daughter node configuration for FLEXTOP architectures- Fujitsu Network Communications FNC docket # 15491 IDR # 311

• An architecture to match core networks at lower price and better performance- Fujitsu Network Communications FNC Docket no not available as on Jan 04 IDR # 344

• Optical Subnets: A Unique Method to Increase Capacity of Drop and Continue Networks, Fujitsu Network Communications and Fujitsu Laboratories, America, Europe and Japan. FNC IDR # 300  and IDR # 301 (2 separate patent applications)

           Granted US Patents (source USPTO):

1.             7,715,711         :            Wavelength selective switch design configurations for mesh light-trails

2.             7,590,353         :            System and Method for bandwidth allocation in an optical light-trail.

3.             7,609,966         :            Method and system for time-sharing transmission frequencies in an optical network

4.             7,515,828         :            System and Method for Implementing Optical light-trails

5.             7,616,891         :            System and method for transmission and reception of traffic in optical light-trails       

6.             7,499,465         :            Heuristic assignment of light-trails in an optical network           

7.             7,603.035         :            Method and system for a data centric architecture in an optical network

8.             7,483,637         :            Optical ring network with optical subnets and method

9.             7,477,844         :            Method and system for utilizing virtual local access network addressing in optical networks

10.             7,466,917         :            Method and system for establishing transmission priority for optical light-trails

11.             7,457,540         :            System and method for shaping traffic in optical light-trails

12.             7,450,851         :            System and method for modularly scalable architecture for optical networks

13.             7,321,729         :            Optical ring network with selective signal regeneration and wavelength conversion

14.             7,283,740         :            Optical ring network with optical subnets and method

15.             7,283,739         :            Multiple subnets in an optical ring network and method

16.             7,200,332         :            System and method for assigning traffic to wavelengths in optical networks

17.             7,184,663         :            Optical ring network with hub node and method

18.             7,035,539         :            Interconnecting nodes in an optical communication system

Non-investigative activities:

• National Talent Search Examination (NTSE) Scholarship, India 1991.

• James R. Isaac Chair in Computer Science and Engineering, IIT Bombay.

• DAE-SRC Outstanding Research Investigator Award, 2010.

• Secretary, IEEE Communications Society, Technical Committee on High-Speed Networks (TCHSN) 2008-2010.

• Technical Program Committee Chair, High-Speed Networks Workshop, part of Infocom 2008, Pheonix Arizona.

• Symposium Chair Next Generation Networks, 53rd IEEE Globecom 2009, Honolulu, Hawaii.

• Awards Chair, 54th IEEE Globecom, 2010, Miami, USA.

• Panelist, MPLS 2009, Washington DC, Oct 2009.

• Tutorial Speaker, IFIP Networking, 2010.

• General Co-Chair First International Symposium on Advanced Networks and Telecommunications Systems Symposium (ANTS 2007) (www.antsconference.org) Bombay India

• General Co Chair and Steering Committee Member, IEEE Advanced Networks and Telecommunications (IEEE ANTS) 2008 conference, Mumbai, India, 2008.

• Steering Committee Member 2007-2009, IEEE ANTS conference.

• Guest Editor, IEEE Communications Magazine, Special Issue on Next Generation Carrier Ethernet along with Vishal Sharma (Metanoia Inc) and Thomas Nadeau (Cisco Systems). Click here for the CFP.

• Guest Editor, IEEE Network Magazine, 2009 Special issue on Cross Layer Networks, 2009 (with Chava Saradhi, Ioannis Tomkos and Dan Kipler).

• Tutorial on Metro Optical Ethernet, part of PDCS 2007, Cambridge Massachusetts November 2007

• Program Chair, First International Conference on Access Networks www.accessnets.org, Athens Greece

• Program Co-chair Second International Conference on Access Networks, Ottawa Canada

• General co-chair IEEE Workshop on Community Networks and Business Models (COMNETS 2005)

• Workshop Chair: Comsware 2006 New Delhi India

• Panelist, Broadnets 2004, Title: Grid Computing and Optical Networks: amongst 4 leading panelists discussing the amalgamation of grid computing and optical networks.

• Publicity Co Chair: Opticomm 2003 Dallas TX.

• Technical Program Committee Member OFC 2009, 2010, Sub Committee # 8, Core Networks

• Technical Program Committee Member IEEE International Conference on Communications ICC 2005, 2006, 2007, 2008

• Technical Program Committee Member, IEEE Global Conference on Communications Globecom 2006, 2007, 2008

• Technical Program Committee Member, Optical Networks Design and Modeling ONDM 2008, Catalunya, Spain

• Technical Program Committee Member, IEEE Workshop on Guaranteed Optical Service Provisioning GOSP 2005, 2006.

• Technical Program Committee Member, IEEE International Conference on Computers Communication and Networking ICCCN 2004, 2007

• Technical Program Committee Member, IEEE Workshop on Grids in Networking GridNets 2004/2005,

• Technical Program Committee Member, IEEE Conference on Broadband Networks Broadnets 2004, 2005, 2006, 2007,

• Technical Program Committee Member, ICST/Createnet Conference on Multimedia Services and Networks, MSAN 2005

• Technical Program Committee Member, Workshop on High-Speed Networks part of IEEE Infocom 2007

• Technical Program Committee Member, IEEE Intl Conf on Distributed Computing and Networks, ICDCN 2008

• Technical Program Committee Member, Photonic Communications and Systems Networks, Graz, Austria 2008

• Technical Program Committee Member, 10th Symp on Wireless Personal Multimedia Communications (WPMC), Jaipur 2007

• Technical Program Committee Member, 5th Intl Conf on Service Systems and Serv Mngmt, ICSSSM 2008

•  Session Chair: IEEE Broadnets 2004, IEEE Globecom ATPON 2006, IEEE Globecom CMPHN 2006, Opticomm 2003.

•  Reviewer

• IEEE Globecom 2002-5, IEEE International Conference on Communication (ICC) 2002-3, Optical Amplifier and Application (OAA) 2003, European Conference on Optical Communication (ECOC), Lasers and Electro-Optics Society (LEOS), Infocom 2006-7, IEEE HPSR 2004-5

• IEEE Communication letters,

• IEEE/OSA Journal of Lightwave Technology

• IEEE Communications Magazine,

• IEEE/ACM Transactions on Networking,

• IEEE Journal on Selected Areas in Communication,

• IEEE Transactions on Parallel and Distributed Systems

• IEEE Internet Computing

• OSA Optics Letters,

• OSA Journal of Optical Networking (JON)

• Elsevier Optical Switching and Networks (OSN) Journal

• Elsevier Computer Communications (COMCOM) Journal

• Reviewer for Business on Optical Networks – A Book by Prentice Hall. Reviewer for DSL Technologies by McMillan Publishers

Past and upcoming Talks:

• Massachusetts Institute of Technology, 2008.

• University of New Mexico, Albuquerque, 2008.

• Oklahoma University,2009

• Nokia Siemens Networks, 2009

• BARC, 2009

• MTNL, Mumbai, 2009

• MTNL Mumbai 2010

• IIT Madras, 2010

• Nortel Networks, 2008.

• Intel Inc. 2009.

• Ciena India 2009.

• Cisco Systems 2009.

• Broadband World Forum Hong Kong July 2008.

• Asian Business Council, Dallas, 2008.

• Infosys, 2008.

• Indian Institute of Technology, Kharagpur, 2008

• University College Dublin, Ireland.

• Iowa State University, Ames, 2008.

• Cisco Systems, Bangalore, India, 2008.

• Tata Communications, 2008.

• Guangzhou Institute of Science and Technology, GIST, Korea, 2008.

• GMR Group, India, 2008.

• Tata Sons, India 2008.

• Tata Communications, 2009

• MTNL, 2009

• University of New Mexico at Albuquerque, 2008.

• Avaya, NJ, 2008.

• Iowa State University, 2008.

• Georgia State University, 2008.

• University of California-Davis, CA, USA 2005.

• Victoria University Wellington.

• Indian Institute of Technology, Delhi.

• Fujitsu Laboratories Richardson TX USA.

• University of Trento, Italy. 2006.

• Create-net, Italy, 2006.

• Province of Trento, Italy 2002.

• Essex University, Colchester UK 2007.

• Georgia Institute of Tech, Atlanta 2007.

• University of Texas at Dallas 2003.

• NEC Laboratories Princeton NJ 2007.

• IIT Bombay, 2007.

• Wipro Technologies, Bangalore 2007

• Hong Kong University of Science and Technology (HKUST) 2007.

• City University of Hong Kong (CityU) 2007.

• Cisco Systems Richardson TX USA 2001.

• Tennessee Technological University, Cookeville 2007.

• British Telecom UK 2005.

• California State University, Rohnert Park 2005.

• Pacesetter Ventures Dallas USA 2002.

• University of Louisiana at Lafayette 2004.

Consulting activities and grants:

• Grant from Ethernet Systems Vendor

• Grant from Test equipment vendor, 100 Gigabit Ethernet project

• Consulting for an Optical Vendor: The ROADM project.

• Sponsored Project and grant, Ministry of Information Technology. The PERISCOPE project.

• Sponsored Project and grant, Ministry of Information Technology. Fiber to the Curb.

• Grant from India's largest service provider. Interop Project.

• Grant from India's fastest growing service provider. The CESR Project.

• Grant from Mumbai's biggest broadband service provider. The Business Case for Broadband Project.

• Grant from Government of India. The Industrial Ethernet Project.

• Grant from a System Integrator. The MSTP project.

• Grant from the European Union. The GEYSER project

• Consulting for a service provider in India.

• Interoperability for a provider in Asia.

• Grant from a chip vendor: DynaSPOT project.

• Consultant for a service provider in North America 2006- present

• Secured fund from an IT major for test-bed development (out of an umbrella project IITB-TCS)

• Part of Review Committee for a lab part of Ministry of Defense, Govt. of India

• IITB IRCC grant: Dynamic and Reconfigurable Optical Networks

• IITB IRCC follow up grant: Dynamic and Reconfigurable Optical Networks

• Travel grant from Ministry of Human Resource Development India

• Equipment grant from Xilinx (GEMAC) USD 20K for Optical packet test-bed

• Equipment grant from Netxen on Data center