SUMMARY:

• Seven years of extensive experience in network design, implementation, troubleshooting, engineering, managing & migration of large - scale enterprise networks.
• Experience in datacenter migration, datacenter network design and have solution in various LAN and WAN technologies.
• Expertise in network refreshment and security audits, security policy.
• In-depth expertise in the implementation of analysis, optimization, troubleshooting and documentation of LAN/WAN networking systems, VPN devices.
• Good knowledge of ITIL framework.
• Planning, Designing, Installing, Configuring of Cisco 6500, 4500, 3750, 3500, 2900 XL series switches, Cisco 7200, 3800, 3600, 2800, 2600, 2500, 1800 series Routers.
• Installing and configuring firewalls (Checkpoint NG & NGX, Cisco ASA, Cisco Pix, Juniper Netscreen, ISA).
• Experience with F5 load balancer - Big IP, Viprion series.
• Good knowledge ofIP Addressing, Subnetting, VLSM, ARP, OSI and TCP/IP models
• Expertise in implementing L2 technologies including VLAN’s, VTP, STP, RSTP and Trunking.
• Experience in Frame mode MPLS, MPLS VPNs design, troubleshooting.
• Configured Security policies including NAT, PAT, VPN’s and Access Control Lists.
• Implementing security policies using ACL, ASA, Routers and PIX firewall.
• Installing, configuring and troubleshooting DNS and DHCP servers.
• Troubleshooting Layer 1, 2, 3 issues using Wireshark.
• Expertise in implementing Router Redundancy Protocols like HSRP,VRRP.
• Expertise in implementing routing protocols RIP,RIP V2,EIGRP,OSPF,BGP.
• Configuring and Troubleshooting Route Redistribution between static, RIP, EIGRP OSPF & BGP protocols.
• Experience in Configuration and Support ofLAN protocols on Cisco Switches such as (Layer2, Layer3 and Multi-Layer).
• Experience in Trunking Protocols (802.1q, ISL), Link Aggregation Protocol (LACP, PAGP).
• Configuring Network Address Translation (NAT) according to the connectivity requirements.
• Verifying and configuring rules on a firewall.
• Designing & Implementing different connectivity solutions.
• Designed QoS policies for critical applications based on requirements and traffic patterns.
• Installed, configured, maintained online/offline servers and Interactive Voice Response Systems (IVRS).
• Planning & implementing information security guidelines as per the security standards.
• A highly organized individual who adopts a systematic approach to problem solving, effectively analyzes results and implements solutions
• Excellent communication skills, Enthusiastic, motivated and a team player.

TECHNICAL SKILLS:

CISCO & OTHER VENDORS EQUIPMENT: Cisco routers (7600, 7200, 3800, 3700, 3600, 2600 series), & Cisco Catalyst Switches (2900, 3500, 5000, 6500 series); Juniper Load Balancer DX3280,3680, Juniper Firewall srx 210, Cisco PIX 506/515/525/535 Series, ASA Firewall 5505/5510, Cisco IOS 12x, PIX OS 6x, 7x

LAN/WAN TECHNOLOGIES: Ethernet, Fast Ethernet, Gigabit Ethernet networks,VLAN,VTP,STP,RSTP,802.11a/b/g, Frame Relay, ISDN, PPP, ATM, MPLS, Leased line exposure to PPP, T1/T3, DS1, DS3, OC3, OC12

ROUTING PROTOCOLS: OSPF, EIGRP, BGP, IBGP, EBGP, HSRP, VRRP, RIP, RIP V2.

NETWORK SECURITY: NAT/PAT, Ingress & Egress Firewall design, VPN Configuration, Load balancing, Internet Content Filtering, IDS/IPS

INFRASTRUCTURES SERVICES: DHCP, DNS, SMTP, TFTP, FTP

NETWORK MANAGEMENT: SNMP, Cisco Works LMS, Wireshark

PLATFORMS: Windows XP, NT, 2000, 2003

DOCUMENTATION: MS office, MS Visio

PROFESSIONAL EXPERIENCE:

Confidential, Winfield, IL

Sr. Network Engineer

Responsibilities:

• Responsible for maintenance and installation of Cisco Routers / Switches: 2800, 3700.1700.2900. Programmed and analyzed network clocking, routing, bandwidth usage and system parameter for all Timeplex, as well as for other vendor’s WAN/LAN equipment.
• Troubleshoots circuits, DSU/CSU’s, Routers, Switches and TDM problems Analog.
• Configuring & Maintaining the VLANS, Inter VLAN Communication, Spanning tree, Trunks, Channels on layer 2 & 3 switches.
• Strong understanding of Terminal Servers, Routine Protocols such as EIGRP, ARP, RARP, HSRP, Internet Protocols.
• Performance tuning on all servers as per group IT Standards.
• Technical Support for all WAN, LAN and OS related problems.
• Installing, Configuring & Maintaining a network of 2000 nodes, which contains different Operating systems.
• Responsible for Network Printers and troubleshooting the same.
• Upgradation of Hardware and OS as required.
• Responsible for server maintenance and Upgradation.
• Deploying new servers as per standards and requirements.
• Responsible for maintenance of web site and traffic reporting, Internet connectivity, user management, updates of common software, network-based backups, network and system security and customer support.

Confidential, Des Moines, IA

Sr. Network Administrator

Responsibilities:

• Served as a Sr. Network Administrator for their banking Data Center.
• Conducted analysis on existing technologies and upgraded company internal network with new routers and firewalls as per company policies.
• Rolled out existing flat structure of branch site with Cisco 3640 and 3800 routers and used Cisco ASA 5525-X to provide firewall security.
• Segmented traffic into different classification using access control list (ACL).
• Configured Server Load balancer to distribute load based on weighted round robin policy.
• Implemented Layer 2 security policies to mitigate attacks by hard coding access port, Port-security violation policies, configuring all unused port in Black hole VLAN.
• Configure and troubleshoot Cisco routers using EIGRP for internal routing.
• Implemented AAA services on Layer 3 switches to authenticate server clients.
• Configured Site-to-Site VPN using IPSec tunnels over internet utilizing 3DES, on ASA firewall’s using ASDM to connect to client sites.
• Created dedicated VLAN’s for CISCO IP telephony/VoIP solutions to reduce companies infrastructure cost in IP networks.
• Designed on- premise IVRs for integrating with the ACD and CRM systems to ensure maximum efficiency in call handling.
• Daily responsibilities included monitoring remote site using network management tools, assisted in design guidance for infrastructure upgrade & help LAN administrator with backbone connection and connectivity issues
• Responsibilities also include technical documentation of all upgrades done.
• Attending meetings and technical discussions related to current project.

Confidential, Cincinnati, OH

Network Engineer

Responsibilities:

• Configured VLAN’s with 802.1q tagging. Configured Trunk groups and Spanning tree for creating Access/distribution and core layer switching architecture and also for security.
• Configuring BGP, EIGRP and OSPF routing protocols for enterprise network and provided Support.
• Managed IP Addressing and configured Access Lists.
• Hands-on experience with WAN (ATM/Frame Relay), Routers, Switches, TCP/IP and IP addressing.
• Implemented and troubleshot communication networks including TCP/IP and IPSEC.
• Created dedicated VLAN’s for CISCO IP telephony/VoIP solutions to reduce companies infrastructure cost in IP networks.
• Configuring and troubleshooting Multiprotocol Label Switching (MPLS) like levels of control, MPLS forwarding, traffic engineering.
• Installed, configured, maintained online/offline servers and Interactive Voice Response Systems (IVRS).
• Configured and managed DNS and DHCP server.
• Troubleshooting the network for the network connectivity issues and network performance issues.
• Planning & implementing information security guidelines as per the security standards on the firewalls.
• Working and Implementing the DNS in Global Network.
• Installing, Configuring, Administering and supporting the Windows 2003 Server, Windows 2000 Server, Windows 2000 Advanced Server, IPD server and Toad SQL Server.
• Responsible for Installation of Anti-Virus, virus detection and spy ware removal.
• Conducted and implement Network and software installations and upgrades.
• Installed Maintained software license agreements.
• Assisted users with requests with software and Hardware related issues.
• Capacity and performance management of existing infrastructure.

Confidential, Dallas, TX

Network Engineer

Responsibilities:

• Experience in data center network design and implementation with cisco devices.
• Applied effectively various routing protocols including EIGRP, RIP, OSPF and BGP; Implemented Redistribution of Routing protocols.
• Involved in troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF & BGP.
• Support for problem resolution including performing diagnostics, and configuring network devices.
• Responsible for layer 2 securities which was implemented using a dedicated VLAN ID for all trunk ports, setting the user ports to non trunking, deployed port security when possible for user ports.
• Used Dynamic Host Control Protocol (DHCP) to automatically assign reusable IP addresses to DHCP clients.
• Create and maintain security and disaster prevention policies and procedures on Juniper M and E series routers.
• Detect and repair potential provisioning and configuration issues on Juniper Routers.
• Configured STP prioritization for selection of the root bridge.
• Configured standard and extended ACL’s on the servers to limit its access.
• Configured static NAT, dynamic NAT, inside global address overloading, TCP overload distribution, overlapping address translation.
• Provided routing support including configuration and troubleshooting of various routers.
• Implemented IP, SIP/SDP, ESP, RTP, TCP, UDP Packets capture and analysis using WIRESHARK (ethereal).

Confidential, Pittsburgh, PA

Network Engineer

Responsibilities:

• Responsible for Installing, configuring, maintenance and troubleshooting of company network using Cisco Routers 3600,3800 & 7200 series & Catalyst 2900,3500,5000 series Switches.
• Designed VLAN’s, VTP and Updating IOS images and other hardware installations.
• Used STP in server-farms to detect redundant links and block them to prevent looping.
• HSRP is employed to provide redundancy to the LAN networks. This approach provided rapid failure detection and recovery, is scalable and economically feasible.
• Configured Ether-channels between Core layer and Distribution layer switches using Link Aggregation Control protocol (LACP) and to increase the link speed and provide redundancy for high availability.
• Configured GSLB by defining master, agents, remote-nodes and used load balancing policy to distribute load between different servers using any-cast IP address.
• Responsible for implementing Layer 2 Security including port security, STP attack mitigation using BPDU guard and root guard.
• Prevented other layer 2 attacks from occurring by configuring port security, DHCP Snooping and enabling 802.1x on Cisco routers using radius server.
• Configuring dedicated Vlans for VOIP networks as part of implementing IP telephony in company’s infrastructure.
• Configured DHCP using Microsoft server 2003, Assigned IP addresses for Internal LAN network using NAT/PAT, Access lists (ACL), & troubleshooting IP Addressing scheme.
• Implemented OSPF for production site. Maintained BGP4 routes for Outside Network Connectivity.
• Configured Site-to-Site VPN tunnels between Main office and Branch office-using ASA 5000 series firewalls & monitored originating and returning traffic using SDM.
• Configured Frame-relay WAN Connections for connectivity between Branch office and Main office.
• Propagated OSPF routes over Frame-relay using Point -to-Point mode.
• Troubleshooting Layer 1, 2, 3 issues using Wireshark.
• Performed backing up of current IOS and Upgrade Cisco IOS using TFTP server.
• Duties also include monitoring network performance using network tools like Cisco Works LAN management Solution 2.6 to ensure availability, integrity & confidentiality of applications and equipment.
• Responsible for securing Company’s LAN infrastructure.
• Responsible for technical documentation for newly implemented networks.
• Provide project leadership to ensure the timely implementation of all services by coordinating the activities of vendors and with sales team.