Network Engineer with 5 Years Expertise

Bhavani Shashank Bhumana

216-***-**** ***************@*****.***

PROFESSIONAL SUMMARY

Network Engineer with 5 years of experience in implementing and supporting enterprise LAN/WAN environments, including branch connectivity, MPLS, and secure VPN solutions. Skilled in configuring Cisco switches, routers, and firewalls, with a strong understanding of VLANs, inter-VLAN routing, and dynamic routing protocols such as OSPF and EIGRP. Experienced in monitoring and troubleshooting network performance using tools like SolarWinds and Splunk, performing root cause analysis, and resolving incidents within SLA timelines. Proficient in managing incident lifecycles using ITSM tools, collaborating with cross-functional teams and vendors, and providing reliable L1/L2 support. Adept at network documentation, device configuration, and end-user support, with a focus on maintaining network stability, minimizing downtime, and improving overall operational efficiency. SKILLS

Routing and Switching: OSPF, EIGRP, STP, VLAN Trunking (802.1Q), EtherChannel (L2/L3), HSRP Networking Technologies: LAN, WAN, VLAN, VPN (IPsec), MPLS, Inter-VLAN Routing, Network Segmentation Network Security: ACLs, Port Security, 802.1X Authentication, Cisco ASA Firewall, VPN Configuration Monitoring and Tools: SolarWinds, Splunk, Wireshark, Microsoft Visio Ticketing & ITSM: Remedy ITSM, ServiceNow, Jira

Networking Devices: Cisco Routers (ISR Series), Cisco Switches (Catalyst 2960, 3560, SG200, SF300), Cisco ASA 5505/5510 Protocols: TCP/IP, DHCP, DNS, HTTP, ICMP, UDP

Operating System: Windows, Cisco IOS, Linux.

Programming Languages: Python, C, C++, Java

Certifications: CCNA, CompTIA Security+.

PROFESSIONAL EXPERIENCE

Network Engineer Cleveland,OH

Lumen Technologies Aug 2024 - Present.

Project Description:

The project modernized and optimized the enterprise network across corporate and branch offices, ensuring secure, high-performance WAN and LAN connectivity. Key objectives included deploying Cisco-based infrastructure with VLANs, EtherChannels, and HSRP for redundancy, along with implementing monitoring tools to maintain 24/7 uptime. The initiative included structured cabling, IP management, and change management to improve operational efficiency. Outcomes delivered enhanced network reliability, reduced downtime, and faster incident response, ensuring seamless communication and resilient network operations across all sites. Responsibilities:

●Designed and implemented LAN/WAN connectivity for a corporate office and a small number of branch locations, ensuring reliable communication between sites and alignment with business application requirements.

●Installed and configured Cisco Catalyst 2960, SF300-24P, and SG200-26P switches, implementing VLAN segmentation, trunking, and inter-VLAN routing to separate user, voice, and server traffic and improve overall network performance.

●Configured Cisco ASA 5505/5510 firewalls to establish secure site-to-site VPN tunnels using IPsec and IKE, enabling encrypted communication between locations and enforcing access control using ACLs.

●Led network capacity planning and scalability initiatives by analyzing traffic patterns and future growth requirements, recommending hardware upgrades and configuration enhancements to support expanding office locations and increasing data demands without compromising performance or reliability.

●Maintained Layer 2 network stability by configuring Spanning Tree Protocol features such as PortFast and BPDU Guard, preventing switching loops and reducing network disruptions caused by improper end-user connections.

●Set up Cisco routers as DHCP servers for internal networks, enabling dynamic IP address allocation across VLANs and reducing manual configuration efforts.

●Optimized network performance and security by implementing Quality of Service (QoS) policies for voice and critical business applications, ensuring minimal latency, jitter, and packet loss across both LAN and WAN environments, thereby enhancing user experience and maintaining service-level standards.

●Implemented and supported dynamic routing using OSPF and EIGRP in a mixed environment, including basic route redistribution to ensure consistent routing between different network segments.

●Troubleshot day-to-day network issues including VLAN mismatches, trunk port issues, port security violations, and intermittent VPN connectivity problems, ensuring minimal downtime and smooth operations.

●Used Wireshark and basic network tools to analyze traffic and identify issues such as packet drops, latency, and misconfigurations in both LAN and WAN environments.

●Created and maintained network diagrams and documentation using Microsoft Visio, including topology layouts, IP addressing, and VLAN details to support ongoing operations and troubleshooting. NOC Analyst Dallas,TX

T-Mobile October 2022 – July 2024.

Project Description:

The project focused on ensuring 24/7 availability and reliability of the enterprise WAN infrastructure, including MPLS and VSAT links, for uninterrupted business operations. Key objectives included implementing continuous monitoring using Splunk and SolarWinds, performing incident triage, and managing the end-to-end lifecycle through Remedy ITSM to maintain SLA compliance. The initiative aimed to identify root causes of network issues, coordinate with ISPs and internal teams for resolution, and implement preventive measures to reduce recurring faults. Outcomes included improved network stability, faster incident response, and enhanced operational efficiency through proactive monitoring and structured documentation. This project ensured seamless connectivity and high service continuity across all enterprise sites.. Responsibilities:

●Provided L1/L2 network operations support in a 24/7 NOC environment, monitoring enterprise WAN connectivity including MPLS and VSAT links to ensure high availability and service continuity.

●Monitored network infrastructure using Splunk and SolarWinds, analyzing alerts, syslogs, and performance metrics to identify link failures, interface errors, and abnormal traffic patterns.

●Performed initial triage of network incidents including link down events, high latency, packet drops, and routing instability by validating device reachability, interface statistics, and WAN provider status.

●Managed end-to-end incident lifecycle using Remedy ITSM, including ticket creation, categorization, prioritization, escalation, and closure while ensuring SLA compliance and accurate documentation.

●Correlated multiple alerts and logs to identify root causes and avoid duplicate incident creation, improving efficiency in incident handling and reducing noise in monitoring systems.

●Coordinated with ISP providers and internal network teams to troubleshoot and resolve WAN-related issues, including MPLS circuit outages and VSAT communication failures.

●Conducted basic routing and connectivity checks using tools such as ping, traceroute, and remote device access (SSH/Telnet) to validate network paths before escalation.

●Assisted in change management activities by validating network health before and after scheduled maintenance, ensuring no unintended impact on production environments.

●Maintained detailed operational logs and incident reports to support knowledge base updates and improve troubleshooting efficiency for recurring network issues.

●Supported continuous monitoring and improvement efforts by identifying recurring faults and working with senior engineers to implement preventive measures.

Network Engineer Hyderabad,IN

Xesot Technologies January 2020 – July 2021.

Project Description:

The project aimed to enhance the performance, reliability, and resilience of the enterprise WAN and LAN infrastructure across corporate and branch offices. Key objectives included deploying and configuring Cisco switches with VLANs, EtherChannels, and HSRP for secure, high-availability connectivity, along with implementing structured cabling and IP address management. The initiative integrated 24/7 NOC monitoring using Splunk, SolarWinds, and Wireshark to quickly detect and resolve network incidents, while coordinating with internal teams and ISPs to minimize downtime. Outcomes included optimized network performance, improved incident response, and strengthened operational efficiency, ensuring seamless communication and robust connectivity across all sites.

Responsibilities:

●Provided L1/L2 NOC and hands-on network support for enterprise WAN/LAN, deploying Cisco switches with VLANs, EtherChannels, and HSRP for optimized performance and redundancy. Monitored and troubleshot incidents using Splunk, SolarWinds, and Wireshark, ensuring rapid resolution, high availability, and operational efficiency.

●Delivered L1/L2 NOC support for 24/7 enterprise WAN operations, ensuring high availability across MPLS and VSAT links. Proactively monitored and troubleshot network incidents using Splunk and SolarWinds, reducing downtime and improving SLA compliance. Managed end-to-end incident lifecycle via Remedy ITSM and coordinated with ISPs and internal teams for rapid resolution. Supported preventive measures and change management to enhance network reliability and operational efficiency.

●Supported installation and implementation of enterprise network infrastructure, including configuring switches, assisting with device setup, and performing structured cabling in communication rooms.

●Implemented VLANs, trunking, and port security on Cisco switches to enable secure and segmented network access across user and device groups.

●Configured and supported Layer 2 and Layer 3 EtherChannels to improve bandwidth utilization and provide link redundancy between network devices.

●Assisted in deploying first-hop redundancy using HSRP to ensure gateway availability and minimize downtime during failover scenarios.

●Managed IP addressing and subnetting for internal networks, ensuring proper allocation and efficient utilization of address space.

●Provided remote support to field technicians during device installation, including guidance on racking, cabling, and basic configuration tasks.

●Performed hands-on troubleshooting of connectivity issues using fundamental networking concepts based on the OSI model and TCP/IP protocols.

●Used Wireshark to analyze network traffic including TCP, UDP, HTTP, and ICMP to identify performance issues and assist in resolving abnormal or suspicious traffic behavior.

●Collaborated with internal teams and communicated with users via email and WebEx to resolve technical issues and ensure smooth network operations.

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