PROFESSIONAL SUMMARY

• 7+ years of professional experience in Network Planning, Implementing, Configuring, Troubleshooting and Testing of networking system
• Expertise in network protocols, Firewalls and Communication Network design.
• In - depth Cisco technology experience/knowledge in design, implementation, administration and support
• In-depth knowledge of deploying and troubleshooting LAN, WAN, Frame-Relay, Ether-channel, IP Routing Protocols - (RIPV2, OSPF, EIGRP & BGP), ACL's, NAT, VLAN, STP, VTP, HSRP & GLBP
• Strong hands on experience in layer-3 Routing and layer-2 Switching. Dealt with Nexus models like 7K, 5K, 2K series, Cisco router models like 7200, 3800, 3600, 2800, 2600, 2500, 1800 series and Cisco catalyst 6500, 4500, 3750, 3500, 2900 series switches
• Dealt with the escalation problems for Routing, Switching and WAN connectivity issues using ticketing system remedy
• Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools
• Dealt with monitoring tools like ( Solar Wind, Kiwi-cat tool), network packet capture tools like Wire-shark
• Provided 24x7x365 availability and on-call support as required
• Excellent working knowledge of TCP/IP protocol suite and OSI layers
• Good knowledge and experience in Installation, Configuration and Administration of Windows Servers 2000/2003, Active Directory, FTP, DNS, DHCP, TFTP, Linux OS under various LAN and WAN environments
• Effective inter-personal skills, adaptive to any environment, keep abreast with the latest technologies and delivering solutions as an individual and as part of a team.

TECHNICAL SKILLS:

Cisco & other vendor equipments: Cisco routers (7200, 3800, 3600, 2800, 2600, 2500, 1800 series)

Cisco Catalyst switches (6500, 4900, 3750, 3500, 2900 series, F5 Load Balancer, ASA 5510.:

Routing Protocols: RIP, IGRP, EIGRP, OSPF, IS-IS, BGP, HSRP, VRRP & GLBP

Infrastructure services: DHCP, DNS, SMTP, FTP, TFTP

LAN technologies: Ethernet, Fast Ethernet, Gigabit Ethernet, & 10 Gigabit Ethernet

Network Management: SNMP, Cisco Works, Wireshark, Solarwinds

Platforms: Cisco IOS(11.x, 12.x), UNIX, LINUX, Windows XP, NT, 2000, 2003

Programming: C, C++, HTML

Documentation: MS Office, MS Visio

PROFESSIONAL EXPERIENCE

Confidential, Bohemia, NY

Sr. Network Engineer

Responsibilities:

• Responsible for preparing bandwidth requirement for different airports sites, used wireshark and TAP device to capture & analyze traffic .
• Supporting EIGRP and BGP based network by resolving level 2 &3 problems of internal teams & external customers .
• Involeved in security software CIS-CAT evaluation, configurtation and implemention.
• Configuration of Access List ACL (STD, Ext, Named) to allow users to access different applications and blocking others.
• Enabled continuous Layer 2 monitoring with Solar Winds, so that each site can run independently until connectivity is restored.
• Responsilble for installation, configuration & maintaince of F5 Load Balancer.
• Performed switching technology administration including VLANs, inter-VLAN routing,Trunking, STP, RSTP, port aggregation & link negotiation.
• Troubleshooting on network problems with Wire shark, identify problem and fix.
• Documented all the work done by using Visio, Excel & MS word.
• Involved in troubleshooting of DHCP and other IP conflict problems.

Environment: Cisco switches (6500, 3700, 4900, 2900), ASA 5510, F5 Load balancer, Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP, GLBP,HSRP).

Confidential, Staten Island, NY A

Sr. Network Engineer

Responsibilities:

• Network Redesign for branches /Campus Locations. dis includes changes to both the voice and data environment.
• Replace branch hardware with new 2851 routers and 2960 switches.
• Conversions to BGP WAN routing. Which will be to convert WAN routing from OSPF to BGP (OSPF is used for local routing only) which involves new wan links.
• Convert Branch WAN links from TDM circuits to MPLS and to convert encryption from IPSec/GRE to GetVPN.
• Performed basic security audit of perimeter routers, identifying missing ACL’s, writing and applying ACL’s
• 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
• Enabled STP attack mitigation (BPDU Guard, Root Guard), using MD5 autantication for VTP, disabling all unused ports and putting them in unused VLAN and ensuring DHCP attack prevention where needed
• Used Kiwi-Cat tools to manage configurations from desktop for network devices, including routers, switches and firewalls. Generate network device configuration reports, such as port, MAC, APR and version details
• Responsible for the Global engineering and support of existing network technologies / services and the integration of new network technologies / services
• Key contributions include troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF & BGP
• Configured network access servers for AAA Security
• Responsible for managing activities, Upgrading IOS - Upgrading hardware and installing new devices, Tuning (Configuration), make standardization for the topology
• Configured, installed, & managed DHCP, DNS, & WINS servers
• Carried out performance monitoring & documentation of relevant network segments to ensure data integrity & environmental safety
• Provide front end on-call network support 24x7x365 for all network infrastructures in the co-operation.

Environment: Cisco routers (7200, 3800, 2800) and Cisco switches (6500, 3700, 4900, 2900), Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP, GLBP,HSRP),.

Confidential, CA

Network Engineer

Responsibilities:

• Installation and Configuration of Cisco Catalyst switches 6500, 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design Document and followed the change process as per IT policy It also includes the configuration of port channel between core switches and server distribution switches
• Involved in design and implementation of Data Center Migration, worked on implementation strategies for the expansion of the MPLS VPN networks
• Router/ Microsoft VPN Server in order to access certain limited network resources from customer locations
• Experience in migration of Frame-relay based branches to MPLS based technology using multi layer stackable switch like 6500 series and 2800 series router
• Created engineering configuration, Security Standards, documenting processes and Network documentation using Microsoft Visio
• Managing health check of Network devices dis is involves upgrading IOS on every quarter after checking the vulnerability of IOS and reviewing the configuration
• Installation, Configuration and Administration of ADS,DNS,DHCP and Web proxy(ISA)server
• Upgrade Cisco Routers, Switches and Firewall (PIX) IOS using TFTP
• Manage Cisco Routers and troubleshoot layer1, layer2 and layer3 technologies for customer escalations
• Taking Regular backups & testing the backups by restoring in test lab frequently
• Involved in designing L2VPN services and VPN-IPSEC autantication & encryption system.
• Experience in HSRP standby troubleshooting & Experience in configuring & upgrading of Cisco IOS
• Installation, Configuration and troubleshooting Cisco switches and Firewall on multi mode context based environments
• Handled Corporate and Review Audits from the perspective of IT Security for Network Devices and Servers under our control. dis includes Artifacts for regular Health Checks, IP and System Integrity, Change management, Problem management, Logical Access Controls, Network Connectivity, Service Registration and Performance Management
• Installed and configured the Cisco routers 2800 in two different customer locations. It includes coordinating with Verizon and AT&T in order to bring the serial interface up for T3 link. Also, configuration includes frame relay, BGP and VPN tunnel on GRE
• VLAN Configurations, troubleshooting and Firewall ACLs and Object-Groups configuration and support
• Configured IPSec site-to-site VPN connection between Cisco VPN 3000 Concentrator and Cisco 3800.

Environment: Router series (2800, 3800, 7200) and switch series (3750, 3550, 4509E, 6509E), firewall, Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP), Site to Site VPN, Remote Access VPN, Cisco VPN 3000 .

Confidential, Piscataway, NJ

Network Engineer

Responsibilities:

• Tuned BGP internal and external peers with manipulation of attributes such as metric, origin and local Preference.
• Cisco Secure Access Control Server (ACS) for Windows to autanticate users that connects to a VPN 3000 Concentrator.
• Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
• Responsible for day to day management of Cisco Devices, Traffic management and monitoring.
• Troubleshoot and Worked with Security issues related to Cisco ASA/PIX, Checkpoint, IDS/IPS and Juniper Netscreen firewalls.
• Involved in Configuring and implementing of Composite Network models consists of Cisco7600, 7200, 3800 series and ASR 9k, GSR 12K routers and Cisco 2950, 3500, 5000, 6500 Series switches.
• Configured networks using routing protocols such as RIP, OSPF, BGP and manipulated routing updates using route-map, distribute list and administrative distance for on-demand Infrastructure.
• Configured OSPF redistribution and autantication with type 3 LSA filtering and to prevent LSA flooding.
• Configured OSPF over frame relay networks for NBMA and point to multipoint strategies.
• Implementing traffic engineering on top of an existing Multiprotocol Label Switching (MPLS) network using Frame Relay and Open Shortest Path First (OSPF).
• Provided redundancy in a multi homed Border Gateway Protocol (BGP) network by tunings AS-path.
• Implemented various OSPF scenarios on networks consisting of 7600 routers.
• Configured policy based routing for BGP for complex network systems.
• Configured Multiprotocol Label Switching (MPLS) VPN with Routing Information Protocol (RIP) on the customer’s Site.

Environment: Cisco routers(7600, 7200, 3800), Cisco switches(2950, 3500, 5000, 6500), Routing Protocols(OSPF, RIP, BGP).

Confidential, NJ

Network Engineer

Responsibilities

• Involved in troubleshooting of DNS, DHCP and other IP conflict problems
• Implemented the security architecture for highly complex transport and application architectures addressing well known vulnerabilities and using access control lists that would serve as their primary security on their core & failover firewalls
• Used various scanning and sniffing tools like Wire-shark
• Enabled STP Enhancements to speed up the network convergence that include Port-fast, Uplink-fast and Backbone-fast.
• Managed network connectivity and network security, between Head offices and Branch office
• Responsible for Internal and external accounts and, managing LAN/WAN and checking for Security Settings of the networking devices (Cisco Router, switches) co-coordinating with the system/Network administrator during any major changes and implementation
• Responsible for the installation, configuration, maintenance and troubleshooting of the company network. Duties included monitoring network performance using various network tools to ensure the availability, integrity and confidentiality of application and equipment
• Creating Private VLANs & preventing VLAN hopping attacks & mitigating spoofing with snooping & IP source guard
• Hands on Experience working with security issue like applying ACL’s, configuring NAT and VPN
• Documenting and Log analyzing the Cisco ASA 5500 series firewall
• Responsible for Internal and external accounts and, managing LAN/WAN and checking for Security
• Other responsibilities included documentation and change control
• Worked on Cisco routers 7200, 3800, 2800 and Cisco switches 4900, 2900
• Key contributions include troubleshooting of complex LAN/WAN infrastructure that include
• Routing protocols OSPF, RIP & BGP
• Configured BGP for CE to PE route advertisement inside the lab environment
• Spearheaded meetings & discussions with team members regarding network optimization and
• regarding BGP issues
• Implemented the concept of Route Redistribution between different routing protocols
• Administration of Cisco 11.x and 12.1 versions and higher
• Monitored all Cisco equipments using Cisco Works
• Involved in SNMP Network management. Worked on various scanning and Sniffing tools like Ethereal
• Implementing and maintaining backup schedules as per the company policy
• Settings of the networking devices (Cisco Router, switches) co-coordinating with the system/Network administrator during any major changes and implementation.

Environment: Cisco routers(7200,3800,2800), Cisco switches(4900,2900), Cisco ASA Firewall(5510), Routing Protocols(EIGRP, RIP, BGP), Switching protocols(VTP,STP,GLBP).