Pervasive Server Load Balancing on Programmable Fabric:

Worked on providing Intelligent and Pervasive SLB over Cisco's Programmable Fabric. Developed Switch firmware to allow SLB from any Leaf Node over VxLAN/DFA Fabric.

Open Agent Container (OAC) on NxOS:

I was part of the team enabling the running of a Centos Container on NxOS. This includes providing the capability of connecting to NxOS via NXAPI and configuring the Nexus switches. Provided the capability of bootstrapping the Container to provision Puppet Agent for a Day-0 configuration. Enhanced POAP (Power On Auto Provisioning) Scripts to enable installation of the OAC.

Programmability of Network Devices:

Worked on Programmabilty/Configuration Management using Puppet/Chef. Modelled Programmable objects and wrote providers for Puppet/Chef for Cisco Nexus Switches. Contributed to open source thru github repos for these. https://github.com/dcheriancisco

Implemented and Demo'ed VxLAN providers at Cisco Booth at PuppetConf 2015.

Led the design and development of several Puppet providers and node utils including FabricPath, VPC, VxLAN, ITD, STP etc

Expertise in Nexus7k/NXOS:

Switching:

Designed and Developed firmware for:

Fabricpath forwarding, layer2 unicast, multicast, FCoE forwarding, RIB/FIB for various layer2/3, VPC, PTP, Fibre Channel Congestion Control, load-balancing, Fast Re-routing in FP, Ethernet Switching, VPC+

Routing:

Worked on QOS on IOS

GSR microcode for IPv4/v6 tunneling, layer3 features

Microkernel Development, SCSI driver development