+ Currently part of a core team driving the overall architecture and development of a wan optimization product. Key areas of contribution include

• - Scalable asynchronous network IO

• - Flow state management and data path plumbing

• - TCP data path

• - Inter thread and inter process communication

+ Appnav:

• - Key contributor to overall architecture definition for Appnav, a solution for deploying scaleable and highly-available wan optimization service.

• - Co-led the design and development of the cluster membership and load distribution features

• - Led the specification and design of high availability for the control and data plane

+ Responsible for developing and maintaining core networking infrastructure for a WAN optimization product in user space as well as the Linux kernel, including L2-L4 data path, flow state management and performance evaluation/optimization.

+ Numerous design improvements and bug fixes to WCCP, Cisco’s network traffic interception protocol

+ Feature development and bug fixes for various platform components

+ Live debugging and rapid resolution of customer issues in the field, including kernel crash analysis

+ Distributed Network Monitoring: A lightweight, distributed and fault tolerant network monitoring system. Contributed in the following areas:

• - Active network monitoring test suite, and porting it to various hardware platforms.

• - Cluster membership algorithms

• - Operational topology discovery

• - Network ‘blame attribution’ algorithms

• - Library for platform independent exchange of data objects across the network, with C and python bindings

+ Designed and implemented a device driver agnostic, on-the-fly, kernel send timestamping module for the Linux kernel, to timestamp outgoing UDP packets just before they are transferred to the NIC.

+ Contributed a patch to the CRIS branch of the Linux kernel to correct a non-monotonic time reporting problem.