Rasagna Kumar Gunjala

· Enhanced system performance by identifying and resolving technical issues through troubleshooting and root cause analysis.

· Supported and maintained enterprise-level Cisco network infrastructure, ensuring high availability and optimal performance across core business functions.

· Operated and troubleshot Cisco Identity Services Engine (ISE) for 802.1X authentication, policy enforcement, and secure access control.

· Created comprehensive documentation detailing technical specifications, system configurations, procedures, and user guides for reference purposes both internally and externally for clients.

· Increased client retention rate by building strong relationships through effective communication, understanding their goals, and delivering tailored technology solutions.

· Understanding of network security and authentication hardening (e.g. IT Networks IPv4/IPV6).

· Experience in Network Design, Security and Architecture in telecoms, power, defense or related sector.

· Assist with monitoring the overall reliability, capacity and performance of communications systems and equipment including installation/upgrade troubleshooting and maintenance support.

· Supported and maintained enterprise-level Cisco network infrastructure, ensuring high availability and optimal performance across core business functions.

· Configured and troubleshooted Cisco routers and switches (Layer 2/3), contributing to seamless data routing and network segmentation.

· Participate in voluntary on-call rotation to monitor and address weekend issues.

· Administered and maintained Cisco wireless infrastructure, including Wireless LAN Controllers (WLC) and Cisco Prime Infrastructure, enhancing wireless coverage and performance across multiple sites.

· Operated and troubleshot Cisco Identity Services Engine (ISE) for 802.1X authentication, policy enforcement, and secure access control.

· Understanding of emerging telecommunication industry standards and technologies (e.g. 5G, PTP)

· Conducted hands-on physical hardware tasks including device racking, patching, and equipment replacement as part of regular maintenance and upgrade projects.

· Assist with monitoring the overall reliability, capacity and performance of communications systems and equipment including installation/upgrade troubleshooting and maintenance support.

· Delivered responsive technical support to internal teams, swiftly resolving network-related incidents and minimizing downtime.

· Troubleshoot and resolve any technical issues within satellite network, such as satellite link failure, system malfunctions, DWDM issues and data retransmission errors.

· Maintain operations of satellite communication systems to ensure their availability, reliability, and security.

· Configure and test satellite communication equipment, including transmitters, receivers, modems, antennas, and amplifiers.

· Perform regular maintenance tasks, such as upgrading software and firmware, replacing faulty components, and testing backup systems Maintenance of network monitoring tools - Zabbix and Grafana, TNMS and NIW

· Implement, maintain and troubleshooting routing, IP switching, firewalls, remote access protocols, Network technologies- LAN/WAN, ethernet, TCP/IP, SNMP, VPN, SFTP, VLAN

· Configured protocols like RIP, BGP and OSPF

· Diagnostic Tools- PuTTY, Windows Remote Desktop, SSH, RDP Monitored and managed network performance, ensuring 24x7 availability and reliability.

· Scheduled and maintained network activities and MOPs to ensure optimum operation levels.

· Collaborate with other teams, such as satellite gateway technicians and other network engineers, to ensure seamless integration of satellite communication systems.

· Follow up and Resolve Customer Requests within SLA and work with ITIL aligned processes.

· Diagnosing and resolving technical faults and account inquires to inbound telephone tech support calls.

· Implement, maintain, and troubleshoot different network technologies- DNS, DHCP, Wi-Fi, Cellular, VoIP

· Maintained and optimized Active Directory services, including user management, group policy administration.

· Good knowledge in Fiber technologies like FTTP, FTTC, FTTN, HFC Raising tickets used Content Management System (CMS) as ticketing system.

· Remote accessing router to configure, change settings and troubleshoot to perform.

· Installed and maintained data and voice circuits through routers, switches, and WAN devices.

· Documented network configurations and procedures

· Identifying and prioritizing network issues, responding to calls- for-service, and reporting them to NOC team for effectiveness.

· Reviewed requests for service to resolve IT difficulties, documenting, and fielding tickets to improve problem resolution.

· Monitored and maintained network and software components according to policies and guidelines.

· Worked with senior network engineers in designing and implementing network solutions.

· Conducted network assessments to identify potential issues and resolve them.