My Résumé

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Vijay Padiyar

Professional Summary

  • Operating Systems: Cisco IOS, VxWorks, eCos, Linux, UNIX
  • Programming languages: C, C++, MATLAB
  • Networking standards: Ethernet, SONET/SDH, T1/E1
  • Networking protocols: ATM, IMA, CEoP, CEF, LCAS, LACP, E-Line/E-LAN
  • Debuggers: Vision Click, Metrowerks CodeWarrior, GNU GDB
  • Test equipment: IXIA, Adtech, Agilent N2X, OmniBER

Skills

Circuit Emulation technologies for 2G/3G mobile networks

  • Experience in Circuit Emulation over Packet (CEoP) technologies such as SAToP and CESoPSN, as well as ATM/IMA over Packet.
  • Familiar with CEoP IETF RFCs and TDM ANSI/ITU specs
  • Familiar with clock recovery schemes for CEoP
  • Familiar with L3/L2 QoS for ATM

IP packet switching

  • Experience in IP packet routing algorithms that work in interrupt-context or in combination with hardware ASICs
  • Familiar with data structures used in routing algorithms, such as AVL trees and M-tries, doubly-linked lists, circular linked lists, dynamic sub-blocks, etc.

Ethernet over SONET/SDH

  • Experience in Ethernet over SONET/SDH (EoS) technology, and E-Line and E-LAN services
  • Familiar with Ethernet link aggregation standard (LACP) as well as STP/RSTP
  • Worked on Ethernet VLAN tagging (802.1Q) and double-tagging (Q-in-Q)
  • Familiar with QoS schemes for Ethernet

Embedded systems programming

  • Experience in board bring-up and hardware-specific boot loader customization
  • Experience in object-oriented and device driver programming for embedded platforms
  • Experience in High Availability (HA) aware software implementation

Experience

Cisco Systems, Bangalore, India

Circuit Emulation over Packet line card (August 2008 – present)

  • Part of a team of two engineers
  • Working on MIPS-based Circuit Emulation over Packet (CEoP) line card that is available on Cisco Catalyst 7600 and GSR
  • Responsible for fixing bugs, implementing features
  • Regularly handle critical customer issues of leading 2G/3G mobile operators

Cisco Express Forwarding (October 2006 – August 2008)

  • Part of a team of six engineers
  • Worked on Cisco Express Forwarding (CEF) algorithm for interrupt-context and hardware-based IP routing, used in Cisco Catalyst routers
  • Responsible for bug fixing (internal as well as customer-found defects)
  • Handled customer issues on enterprise and SP networks

Xalted Information Systems, Bangalore, India

Storage Area Networks (August 2006 – September 2006)

  • Did preliminary analysis on current Storage Area Network (SAN) technologies and products

Ethernet over SONET/SDH line card (July 2005 – August 2006)

  • Independent charge of project
  • Responsible for bring-up of new PowerPC-based Ethernet over SONET/SDH (EoS) line card on the Xalted 4X Multi-Service Provisioning Platform (MSPP)
  • Written device driver abstraction layer software for EoS line card
  • Written software for provisioning E-Line and E-LAN services
  • Implemented software to provision LACP and LCAS on EoS line card
  • Worked on integrating open-source RSTP protocol stack on EoS line card

RTOS porting (August 2004 – June 2005)

  • Mostly independent charge of project
  • Ported device drivers and abstraction layer code of Xalted 5X DSLAM from VxWorks to eCos and Linux RTOS
  • Implemented a thread-based user-space interrupt handling scheme for Linux OS
  • Deployed RedBoot and U-Boot Board Support Packages (BSP) for PowerPC-based 5X line cards
  • Hands-on experience of debugging firmware using GNU GDB and Metrowerks Code Warrior on actual hardware

Academic Projects

  • Embedded Web Server (for Matrix Telecom, Baroda)
  • MP3 Player
  • Unmanned Terrestrial Vehicle

Education

  1. Manipal Institute of Technology, Manipal – M.Tech. (Digital Electronics & Advanced Communications) – June 2005
  2. Dharmsinh Desai Institute of Technology, Nadiad – B.E. (Electronics & Communications) – May 2002

Interests