In 2011, there were few good workshops on NS2 till date. It seems VIT, Vellore often organizes workshop on NS2 regularly. My friend Shine V J also told me that he attended one such workshop, and it was very helpful.
Another Update:
CSE Dept of ISM Dhanbad is going to organize an workshop on
Information about those events and about their resource persons can be found in the following links:
www.vit.ac.in/events2011/NET%20WORk.pdf
www.vit.ac.in/events2011/NS2_workshop.pdf
www.sggs.ac.in/cee/201102/Brouchure_NS2_ANK_Feb_2011.pdf
velammal.edu.in/pdf/NetworkStimulator2011.pdf
An Update:
Durgapur Institute of Advanced Technology and Management(DIAT), Durgapur, West Bengal is going to organize an Workshop on Simulation of Computer Networks using NS2 Simulator during 30th – 31st July 2011.
The brochure can be downloaded from the link - http://www.rahul.ac.in/workshop_on_NS2.pdf
The resource persons are: Prof. T S Pradeep Kumar, VIT University (Chennai Campus), and
Prof. Sajal Mukhopadhyay, NIT, Durgapur.
Another Update:
CSE Dept of ISM Dhanbad is going to organize an workshop on
Network Protocols and their Simulation using NS-2/ NS-3 during 19-23 August, 2015. The detail can be found in the link
http://www.ismdhanbad.ac.in/depart/cse/Network-Protocols-Simulations.pdf
http://www.ismdhanbad.ac.in/depart/cse/Network-Protocols-Simulations.pdf
