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Sr.Engineer Network

Atlanta, Georgia, United States
February 12, 2018

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To work in a challenging and improving position where my acquired skills and education will be utilized towards continuous growth and career.


Over 7 plus years of experience in design, implementation, troubleshooting, development and maintaining enterprise data center and service provider network systems by dealing with Cisco routers, Juniper routers, Cisco Catalyst & Nexus 7K & 9K Switches, Juniper switches, Cisco Firewalls, in a Day-to-Day Schedule.

Extensive experience and knowledge of routing and switching protocols RIP, OSPF, EIGRP, IS-IS, BGP and VLAN, VTP, STP, RSTP, PVST+, MSTP.

Line card & Nexus OS upgrade in Nexus 7K with migrating traffic to secondary router over in production environment.

Implemented & configured vPC domain in Nexus 7K & 9K.

Design and implement Technology Architecture strategies around Redundancy, High Availability, Disaster Recovery, Backups and Restore.

Worked extensively on redundancy protocols HSRP, VRRP and GLBP.

Experienced with configuring and troubleshooting ACLs, site-to-site VPNs, failovers, HA configs, policy based routing.

Working experience of protocols Frame relay, MPLS, ATM, PPP, ISDN.

Excellent in troubleshooting issues on NAT configuration and related access lists and DNS/DHCP issues within the LAN network.

Profound knowledge in OSI, TCP/IP, VLSM, ARP, IP addressing and Subnetting

Implementing and designing L2VPN services and encryption system and other VPN with IPSEC based services.

Superior troubleshooting and technical support abilities with migrations, network connectivity, and security applications.

Developed IT strategies, policies and procedures consistent with the businesses strategies and vision while effectively protecting: data confidentiality, integrity, and availability in turn providing security and limiting liability.

Experienced working with cases that require strong analytical skills and broad range of software computer expertise like UNIX.

Well focused, goal oriented, responsible and cooperative team worker.

Technical Skills

Cisco Equipments: Cisco Routers (7500, 7200, 5400, 5300, 3800, 3700, 3600, 2800, 2600 & 2500 series), Cisco Switches (Catalyst 2900XL/3500 XL, 3550, 3560, 3750 & 6500 series), Cisco Security appliances (PIX 506, 515, 525, 535 Series, ASA 5505, 5510 & 5520 Series, Cisco Data Center Switches (Nexus 7000, Nexus 5000 & 2000 Series)

Juniper Equipments: EX-2200, EX-3200, EX-4200 and MX - 480, MX- 960 & M320

LAN/WAN technologies: Ethernet, Fast Ethernet, Gigabit Ethernet networks, VLAN, VTP, STP, RSTP, MSTP, SPAN, RSPAN, CDP, LLDP, Etherchannel, Port-channel, LACP, Port-security, 802.11 a/b/g, Frame relay, PPP, ATM, MPLS, EoMPLS, MPLS-VPN, MPLS-TE

Routing Protocols: RIP, IGRP, EIGRP, OSPF, BGP, HSRP, VRRP

Network Security: NAT, PAT, Access-lists, Failover, DNS doctoring

Infrastructure Services: DNS, DHCP, POP3, SMTP, FTP, TFTP, SSH, Telnet

Network Management: SNMP, Wireshark, Log Analysis, Packet Captures, SolarWinds, OMNM

Operating System: Cisco IOS, JUNOS, Nexus OS, Windows, LINUX,

Languages: Basics in C & C++, Python Scripting

Office tools: MS Office package, Mat lab

Work Experience

Cotiviti, Inc. October 2015 – Present

Sr. Network Engineer


Involved in configuring Cisco & Juniper routers and switch administration, familiar with enterprise level Cisco Routers such as 7200 series, 3800 series, 3700 series, 2800series, and Cisco catalyst series switches like 6500, 3750, 4500. Juniper EX 3200, 4200 ( virtual chassis switch ) switches MX 480, MX 960 & M 320 routers .

Implemented & configured vPC domain in Nexus 7K & 9K.

Configuring and troubleshooting of routing protocols such as OSPF and BGP for effective communication.

Junos OS upgrade on EX3200 & EX4200 devices.

Responsible for day to day Operation management of Cisco / Juniper Devices, Traffic management and monitoring.

Reproduced customer problems in a lab, “Root Cause” analysis of problems & verification of the solutions in that lab Performed packet level analysis tools to quickly solve and correct network problems.

Knowledge in implementing DAI ( Dynamic ARP Inspection ) .

Interfaced with vendors and service providers ensuring that hardware or software problems were dealt with efficiently and effectively, with a minimal downtime.

Designed VLAN’s, access lists (ACL), troubleshooting IP addressing issues and Updating IOS images and other hardware installations

Experience in troubleshooting VLAN, STP (Spanning tree protocol), & Switch Trunk and IP subnet issues.

Dealt with NAT configuration and troubleshooting issues related access lists and DNS/DHCP issues within the LAN network.

Lead the security compliance project with a goal to pass and enhance all failed controls for ASA 12.x & 15.X, IOS-12, IOS-15 and IOS-XS in the Data Center and Enterprise environment as a result of Network Security Scan

Installing and configuring the VPN’s for the clients (site to site).

Monitoring Network infrastructure using SNMP tools like Solar winds

Involved in Configuration of Access lists (ACL) for the proper network routing for the B2B network connectivity.

Dealt with the escalation problems from Leve1, Leve2 & level 3 for routing, switching and WAN connectivity issues.

Worked with customers in troubleshooting issues related to connectivity, STP, VLANs, Inter-VLAN routing, VTP, Ether channels, Layer 2/3 switching, log messages.

Possess excellent verbal and written communication skills and experience developing and maintaining technical procedure and documentation.

AT&T, I-Matrix Corp, Atlanta, GA January 2013 – October 2015

Network Engineer


Responsible for Maintenance Window for OAM Migration Project for 43 sites.

Standardizing OAM sites to OAM Gold standards on cisco 7609 Routers.

Lead the critical project of software upgrade ( Nexus OS ) & line card upgrade on Nexus 7010 chassis switches for 28 sites.

Involved in several high priority migration projects for around 100+ sites such as migrating 3G SGSN from Cisco 7609 CE’s to S4 SGSN on new Next Gen Juniper MX 960 router, Ericsson RNC Migration to Next Gen MX 960 Juniper Router, Nokia 2G BSC Migration to MX 960 etc. to meet LTE growth and capacity needs.

Managing and Working with IPSEC tunnels, LAN to LAN VPN implementations.

Performing an analysis of source host and destination path by tracing it through the network router and switches as well as the firewalls it passes.

Administering and troubleshoot the network running multi area OSPF with more than 200+ routers and hundreds of switches

Optimizing routes with route summarization and proper subnets allocation to sites.

Redistribution of routing information, optimize OSPF routing.

Configured site-to-site VPNs, MPLS circuit turn up in a complex environment.

Monitor real time changes on network devices and automate configuration backups with Solar Winds Network Configuration Manager.

Configure AAA with Radius and Tacacs+ on routers, switches and Access Points. Managing devices and controlling user authentication on Cisco ACS 4.0.

Attending the managerial and Technical meetings to discuss the current progress of the project.

Creating a detailed design drawing of the sites, which are under up-gradation and getting it validate from the technical design team.

Maintaining and managing the remote site network, consisting of QoS design, IP addressing, Visio Drawings.

Dimension Data, I-Matrix Corp Framingham, MA August 2012 - January 2013

Network Support Engineer


Troubleshooting routing, configuration, and network performance / degradations issues and perform emergency changes to restore the services.

Handling high priority tickets such as severity 1 and severity 2 and bridge/conference calls with customers and vendors and restore the services within the SLA.

Designing and implementing new environments in DMZ Data center and internal network areas such as allocating subnets, configuring routing, ACLs, and ether-channel uplinks based on client requirements and act as a POC from the network team.

Perform Root Cause Analysis (RCA) for repeat incidents (Chronic Issues) and provide a permanent solution for the issue. Monitor the network for a long period and make sure that the same fault is not repeated any more.

Carry out deeper investigation into the routers’ and switches’ configuration, hardware issues, and software bugs on various Cisco, Juniper devices.

Work closely with engineering team, TAC and NOC teams and advice design and hardware changes to improve the stability and performance of the network and provide temporary fixes to reduce the business impact.

Wichita State University, Wichita, Kansas September 2010 – July 2012

Network Lab Assistant


Installing OS (Linux: Ubuntu, Red Hat; Windows), running scripts to backup data, troubleshooting, maintaining and updating systems.

Assisting students with technical difficulties with operating systems and hardware/wireless connectivity problems.

Helped professors in research work, creating/updating excel sheets, creating brochures, maintaining and troubleshooting printers and faxes.

Handled video conferencing in distance learning classes.

Dalmia Industries Pvt Limited, India June 2008 - July2010 Network Engineer


Cisco IOS and Cisco CatOS configuration and backups, Uploading and download IOS and CatOS using XModem, TFTP and FTP protocols.

Involved in troubleshooting software, hardware and network problems.

Configuration and maintenance LAN networks with switches such as Cisco 4507, 4510.

Configure, Manage and Optimize routing protocols like RIPv2, EIGRP, and OSPF.

Configured VLAN’s, Private VLAN’s, VTP, dot1.Q trunking on switches.

Configuring all the end ports as access ports using port fast and implementing BPDU guard.

Experience in Per-VLAN Spanning Tree (PVST) for maintaining instance for each VLAN configured in the Network.

Troubleshoot issues related to connectivity, STP, Vlans, Trunking, VTP, Layer 2/3 switching, Ether Channels, Inter-Vlan routing, log messages, high CPU utilization and parameters that can degrade Performance of the network.

Installed & configured Cisco PIX 506 to provide security to the network.

Involved in SNMP Network management. Worked on various scanning and Sniffing tools like Ethereal.

Upgrades and backups of Cisco router configuration files to a TFTP server.

Implementing and maintaining backup schedules as per the company policy.

Monitoring and performance tunning of Windows and Linux environment.


Master of Science in Computer Networking August 2010 – July 2012

Wichita State University, Wichita, Kansas

Bachelor of Engineering in Instrumention Engineering August 2004 – May 2008

Sathyabama University, Chennai, India





Pursuing CCIE R&S*

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