PROFESSIONAL SUMMARY;

• Over 10 years of experience in Network Engineering and System Administration with experience in Design and Deployment of including hands - on experience in providing Network support, installation and analysis for a broad range of LAN / WAN communication systems.
• Worked extensively in Configuring, Monitoring and Troubleshooting security appliance, Failover DMZ zoning & configuring VLANs/routing/NAT ing with the firewalls as per the design.
• Experience in Configuring and installing Cisco Router 3845,2800 series and Cisco Switches 3500 series and 2950 and HP switches 8212 ZL, 5412, 3500, 2700 series.
• Experience of routing protocols like EIGRP, OSPF, RIP, and BGP.
• Experienced in Troubleshooting for connectivity and hardware problems on Cisco and HP Networks and Various Wireless Equipment’s.
• Configuring IPSEC VPN (Site-Site to Remote Access) on various firewalls.
• Responsible for firewall management and operations across our global networks.
• Familiar with various Network management and monitoring Tools to check Networking Connectivity, Testing, Configuration and Adding or Removal of IP address blocks.
• Performing troubleshooting on slow network connectivity issues, routing issues involves OSPF, BGP and identifying the root cause of the issues.
• Configured VLANs with 802.1q tagging. Configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• Installing and Configuring a Cisco/Microsoft secure ACS server for AAA authentication (RADIUS).
• Installation and configuration of ESX 5.5/5.1 in New- HP Proliant series & Dell power edge Servers in a core new Data-Centre.
• Installation, configuration & troubleshooting of Windows servers 2003, 2008, 2012 Virtual Machines in the ESX host clusters.
• Experience in DHCP assigning and upgrading Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Experience in Active Directory, Group Policies in Domain Environment and System Based Policies Configuration and Management.
• Setup Active/Standby High Availability for state full failover and replication as well as ZERO DOWN TIME maintenance. Backup and Recovery of Firewall IOS as well as Configurations.

TECHNICAL SKILLS:

Switching: VLAN, VTP, Inter - VLAN routing, STP, RSTP, PVST, 802.1x.

Routing Protocols: static routing, RIP, EIGRP, OSPF.

Network Security: Firewall policies, NAT, VPN, IDS/IPS,

Infrastructure Services: DNS, DHCP, SMTP, POP3, FTP

Authentication: POP, CHAP, RADIUS.

Operating Systems: Windows XP/Vista/7/8/10, Linux and Windows Servers 2003/2008/2012 .

Network management And Monitoring: Wire shark, Solar Winds, NNM, HP Open view, Open NMS.

PROFESSIONAL EXPERIENCE:

Confidential, Dallas, TX

Sr. Network Administrator

Responsibilities:

• Experience with Firewall Administration, Rule Analysis, Rule Modification.
• Installed different software on the systems. Install and managing network devices including Hubs, Switches.
• Implemented WLAN Cisco Wireless Access Points 3500 and its Cisco Controllers 5500 at various corporate sites and its legacy technologies.
• Continually monitor, assess and improve network security, test and implement new security technologies.
• Upgrading Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Negotiate VPN tunnels using IP Sec encryption standards and also configured and implemented site-to-site VPN, Remote VPN.
• Installing and Configuring a Microsoft secure ACS server for AAA authentication (RADIUS)
• Configuring STP for switching loop prevention and VLANs for data and voice along with Configuring port security for users connecting to the switches.
• Troubleshoot traffic passing managed firewalls via logs and packet captures.
• Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms.
• Analyzed customer application and bandwidth requirements, ordered hardware and circuits, and built cost effective network solutions to accommodate customer requirements and project scope
• Identify, design and implement flexible, responsive, and secure technology services.
• Resolved all computer related problems, monitored and maintained system functionality and reliability by identifying ways to prevent system failures.

Environment: Cisco 3750/3550/3500/2950 switches, HP 8212zl/5412zl Core switches, 3500/2900/2700 switches, sonic wall appliance’s, Aruba and Ruckus wireless, Windows servers 2003/2008/2012 , and Windows Clients.

Confidential . Washington DC

Sr. Network /System Administrator

Responsibilities:

• Routing: Designed, configured and converted whole network from Static Routing to RIPv2 distance vector protocol. Tested different protocols like EIGRP, OSPF before implementing RIP v2.
• Switching related tasks included Configuring and implementation of different VLANS. Configured 802.1Q trunk on Fast-Ethernet channel between switches.
• Installation and configuration of ESXI 5 and creating virtual machines, snapshots, templates and migrating them between the servers.
• Active Directory, Group Policies in Domain Environment and System Based Policies Configuration and Management.
• Updated the anti-virus, spam blockers, and other security software for securing system security.
• Monitored network traffic via network monitoring tools and sniffers in an attempt to troubleshoot network outages and intrusions by tracing their origin and destination.
• Configured access server to perform reverse telnet. Configured static NAT, dynamic NAT, inside Global Address Overloading and applied different Access List for good and secured network functionality.
• Comprehensive understanding and managing of storage environment, maintenance of storage products.
• Installation, configuration & troubleshooting of Windows servers 2003, 2008, 2012 Virtual Machines in the ESX host clusters.

Environment: Cisco routers and Switches, Juniper Switches EX2200, 2500, Storage Servers (IBM, DELL, HP), UTM Appliance’s, Network monitoring tools, Blade Servers with various Windows Servers.

Confidential, Cleveland, OH

Network Engineer

Responsibilities:

• Involved in the configuration & troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, BGP v4. Configured IP access filter policies.
• Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500/PIX security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with the firewalls as per the design.
• Attend and participate in system-level design meetings in order to address testing issues early in the software development process.
• Testing routers and modems, troubleshot issues related to broadband technologies for Residential and Business Customers.
• Performing the ACL requests changes for various clients by collecting source and destination information from them.
• Configure Corporate, Wireless and Lab Devices which includes Bandwidth Upgrade, Adding New Devices.
• Primary responsibility is to design and deploy various network security & High Availability products.
• Design, implementation and operational support of routing/switching protocols in complex environments including BGP, OSPF, EIGRP, Spanning Tree, 802.1q, etc.
• Involved in the removal of EIGRP from all devices and making OSPF the primary routing protocol.
• Involved in the modification and removal (wherever necessary) of BGP from the MPLS routers.
• Configuring IPSEC VPN (Site-Site to Remote Access) on SRX series firewalls.
• Responsible for Checkpoint firewall management and operations across our global networks.
• Troubleshoot the Network Issues onsite and remotely depending on the severity of the issues.
• Familiar with various MSIT Tools to check Networking Connectivity, Testing, Configuration and Adding or Removal of IP address blocks, DE coming or Adding the Devices.
• Performing troubleshooting on slow network connectivity issues, routing issues involves OSPF, BGP and identifying the root cause of the issues.
• Performed Break Fix support through driving to different buildings, identifying the root cause of the hardware issues with switches, routers.

Environment: Cisco 2948/3500/2960 switches, ASA5510, Juniper, Fortinet firewall, Checkpoint, Aruba Controllers 3600, 3400, 650, windows server 2003/2008.

Confidential,Westborough, MA

Network /System Engineer

Responsibilities:

• Worked on Cisco Layer 2 switches (spanning tree, VLAN).
• Hands on Experience in Inter-Vlan routing, redistribution, access-lists and dynamic NATing.
• Log messages using Syslog server and analyze the issues related to high CPU utilization and parameters that can degrade performance of the network.
• Involved in all technical aspects of LAN and WAN projects including, short and long term planning, implementation, project management and operations support as required.
• Conduct through analysis, problem solving, and infrastructure planning.
• Provide assistance to Network Manager and serve as Secondary Network support.
• Troubleshoot and fix any backup and monitoring systems related issues in conjunction with Systems team and external vendors.
• Active Directory, Group Policies in Domain Environment and System Based Policies Configuration and Management.
• Updated the anti-virus, spam blockers, and other security software for securing system security.
• Troubleshoot network problems using Packet Analysis tools like Ethereal.

Environment: Windows 2003 Servers, Windows XP/Vista/ 7, HP Core Switches, Cisco Routers and UTM Appliances, L3/L2 Switches, Wireless Access points and Network Monitoring Tools.