Krishan Kumar is a senior network engineer currently working for Cisco India Ltd. in Ranchi, Jharkhand. He has over 4 years of experience in network engineering roles. His current role involves providing L2 support and ensuring smooth network operations for projects like Reliance Jio. He has experience configuring Cisco routers and switches as well as working with routing protocols like IS-IS, BGP, and troubleshooting network issues. Previously he worked for Wipro Technologies on transmission engineering and feasibility analysis roles for Vodafone's UBR network project.