SUMMARY

• Around 6 years of experience as Network Engineer in testing, troubleshooting, implementing, optimizing and maintaining enterprise data network and Service Provider systems.
• Cisco Certified Network Associate (CCNA) with Expert level knowledge in troubleshooting, implementing and testing of static and dynamic routing protocols such as EIGRP, OSPF, IS - IS, RIP and BGP.
• Experience in different vertical markets including service provider and enterprise networks.
• In-depth knowledge and hands-on experience on IP Addressing, Sub netting, VLSM and ARP, reverse and proxy ARP, Ping concepts.
• Expert Level Knowledge on OSI model, TCP/IP, Spanning-tree, 802.1q, ISL.
• Working experience on WAN technologies like Frame relay, MPLS (MPLS-VPN), PPP, HDLC, T1, DS3.
• Sound knowledge on Security including Access Control Lists (ACL), ASA/PIX, VPN, IPSEC, IP Tunneling, DES/3DES and Cisco VPN Concentrators.
• Good Knowledge in configuring MPLS networks and connectivity on PE Routers and site-to-site VPN with IPSEC security layer.
• Good at implementing and troubleshooting redundancy protocols such as HSRP, VRRP and GLBP for Default Gateway Redundancy and configured BIG IP F5 Load balancer.
• Deployed Quality of Service (QOS) for VOIP applications and queuing mechanisms.
• Good understanding on VOIP, Cisco Call Manager, SIP protocol and Cisco SDM.
• Excellent problem solving, troubleshooting, and written documentation skills.
• Self-motivated, quick learner, zealous and hardworking, making it easy to handle multiple demands and competing priorities
• Admirable interpersonal, organizational, and communication skills facilitating the ability to work independently as well as a part of a team
• Worked as part of the Technical Support Team by involving in the documentation and training of the end-users, and in solving the network issues

TECHNICAL SKILLS

Cisco router platforms: 2600, 2800, 2900, 3600, 3700, 3800, 3900, 7200, 7304

Cisco Switch platforms: 2950, 2960, 3560, 3750E, 3750G, 4500, 6500

Firewalls: Cisco PIX 501, 510, 515E, Cisco ASA 5520, 5540

Routing Protocols: EIGRP, OSPF, BGP, RIP

Switching Concepts: VLAN, STP, RSTP, VTP, Ether Channel, Port Fast, Uplink Fast and Backbone Fast

Layer 3 Switching: CEF, Multi Layer Switching, Ether Channel

Carrier Technologies: MPLS, MPLS-VPN

LAN Technologies: Ethernet, Fast Ethernet, Gigabit Ethernet, Wi-Fi

WAN Technologies: FRAME RELAY, PPP, HDLC, ISDN, Leased Lines

Redundancy protocols: HSRP, VRRP, GLBP

Security Features: IKE, IPSec, SSL, AAA, Access-lists

VOIP Technology: Voice Gateways, SIP, QOS

Operating Systems: Windows XP/Vista/7, Windows Server 2003, MAC OS, Linux/Unix

Network Tools: Sniffer Protocol Analyzer, Wireshark 1.10.2, tcpdump, Cisco Packet Tracer 6.0.1, Whatsup Gold

Applications: VirtualBox v4.2.6 r82870, Oracle VMware, XpressConnect ES.

Software: Microsoft Office Suite, HTML

Miscellaneous: Password recovery, upgrading Cisco IOS version, DHCP, DNS, TFTP, POP3, FTP, SMTP, TCP/IP, ARP

PROFESSIONAL EXPERIENCE

Confidential, Atlanta, GA

Network Engineer

Responsibilities:

• Management of LAN/WAN infrastructure as a member of Network Monitoring Team.
• Responsible for support, Implementation and troubleshooting the LAN/WAN and security infrastructure.
• Configuration and installation of Cisco 2921, 3845, 7206 routers and Catalyst 4500 and 6500 series switches.
• Troubleshoot routing protocols OSPF and BGP on company’s complex multiprotocol architecture.
• RIP to OSPF migration at certain branch sites and Implemented OSPF stub networks at some sites.
• Implemented BGP Mutihop for Load Balancing and preventing SPOF utilizing parallel lines.
• Configured BGP Multihoming connecting two different service providers.
• Changes in BGP attributes such as Weight, Local Preference, MED and Extended Communities.
• Design and create dedicated VLANs for Voice and Data with QOS for prioritizing VOICE over the DATA on Catalyst switches and basic VOIP configurations.
• Implemented Layer 2 security using a dedicated VLAN ID for all trunk ports and setting the user ports in non-trunking mode.
• Applied Router redundant technology using HSRP on 3845 series routers.
• Configured firewall-to-firewall VPN access between headquarters and some branch offices in and out of state.
• Prepare network diagrams and drawings for project implementation and test bed scenarios.
• Assisted Tier 4 support on support issues and also involved while configuring BIG IP F5 Load balancers.
• Maintaining AAA, RADIUS Server for Access Control.
• Good experience at Network Architecture, IP Subnetting and Routing Policies.
• Supports end to end delivery of the services program to major customer accounts.
• Perform thorough analysis and diagnosis of complex networking issues. Review and provides recommendations on complex network design.
• Key contributor in implementing and supporting routing, switching in LAN and WAN environment in accordance with specified customer requirements.
• Designed and implemented an efficient IP address scheme within the network utilizing VLSM, Subnetting and CIDR for optimal network performance and aggregation.
• Testing and verifying for any backdoors or loopholes in the running mission.
• Installation and configuration of Cisco VPN concentrator 3060 for VPN tunnels.
• Dealt with Cisco ACE Load balancer in managing the key role issues.
• Configured ASA appliance to allow inbound SSL, WWW, SMTP, FTP traffic into the DMZ server.
• Monitoring all Cisco equipments using Cisco Network Assistant.

Environment: s: Cisco 2800, 2921, 3845, 7200, 7500 Series Routers, Cisco Catalyst series Switches 2960G, 3750G, 4503, 6513, Cisco PIX/ASA Firewalls, BGP, OSPF, STP, VLANs, HSRP, WAN, Site to Site and Remote Site VPN, AAA.

Confidential, Fort Worth, Texas

Network Engineer

Responsibilities:

• Co-ordination and deployment of Cisco and DSL routers (working closely with the on-site technicians), the establishment of trouble tickets with all carriers per DSL, leased lines and ISDN and associated problem resolution, and the final network implementation of the VPN Tunneling Design for clients.
• Resolve tickets for networking team in order to meet defined Service Level Agreement (SLA).
• Provides level 3 support for network infrastructure and applications.
• Serves as member of Network Engineering team that maintains and supports the corporate network infrastructure.
• Upgrade Cisco Routers and link bandwidth during production maintenance windows.
• Coordinate with DBA's, developers and department heads for planning upgrades, system changes and new application deployments.
• Performing User Application Test (UAT) after maintenance window.
• Assist Network Architect with the implementation of LAN/WAN/WLAN technologies.
• Mentor and train members of Network Operations team.
• Testing Cisco IOS as per existing requirements of technology, involving Layer 3 and Layer 2 Protocols, routing and switching for the Service Provider.
• Configured RIP, EIGRP, OSPF, BGP routing, Spanning tree and IP access filter policies.
• Involved in network monitoring over network protocol analyzer Wireshark (Ethereal) application tool capture and filter TCP/IP data for troubleshooting purposes for Windows and Linux Operating System.
• Design and create dedicated VLANs for Voice and Data with QOS for prioritizing VOICE over the DATA on Catalyst switches and basic VOIP configurations.
• Implemented corporate remote office connectivity via Checkpoint VPN technology.
• Managed and ensured optimal operation of all network devices, peripherals, software and communication devices.
• Management of LAN/WAN infrastructure as a member of Network Monitoring Team.
• Quickly resolve all IP network issues to reduce waste and downtime while also ensuring client Service Level Agreements.
• Ensure thorough network documentation, including maintaining each account’s network matrix, backup configurations and network diagrams.
• Contact US Local Carriers (Verizon, Level3, MCI, XO, Broadwing etc.) to escalate poor performance during an outage.
• On call responsibility to assure 24/7 corporate network operations.

Environment: s: VirtualBox v4.2.6 r82870, Linux, Unix, Wireshark 1.10.2, Cisco Wireless - WCS, WLC, 2100, 4400, TACACS/Radius, Cisco 2900, 3800, 3900, 7200, 7600, ASR 1002, Series Routers, Cisco 2960, 2975, 3750-G, 4500, 6500 Series Catalyst Switches, MPLS, Frame-Relay, VOIP, OSPF, BGP, VLANs, Inter-Vlan STP, VRRP, Port Security, VPN, Load balancers.

Confidential

Network Engineer

Responsibilities:

• Providing maintenance and level 3 supports. IP Routing, Switching Protocols and various LAN/WAN technologies (P2P) and wireless (WLC & AP's).
• Effectively configured Cisco 3550 access layer switches with appropriate Vlans, Trunks in production environment.
• Manage the ISP network, including setting up and swapping over T1s, layer one and two switching and routing, working with Cisco routers and switches, devising IP address schemes and applying them to the network topology.
• Assisted in implementing and maintaining networks infrastructure such as LAN, WAN, in accordance with specified requirements.
• Configuration and installation of Cisco Routers (upgrading IOS) and Switches.
• Monitor bandwidth and network activity by analyzing information provided by net flow to ensure both efficient and effective network operation.
• Worked on network issues such as, packet loss, loss of connectivity, routing failures and troubleshoot using industry standard methods such as Ping to test circuit connectivity and trace to show traffic path to device or destination.
• Managed WAN infrastructure evolution using ISDN, Frame Relay, Site to Site VPN, MPLS and Metro Ethernet Products.
• Trouble-shooting LAN/WAN, Cisco Routers, ATM Switches, IP Telephony for network connectivity, Layer 2 & 3, creating and addressing Change Management requests.
• Proficient in the management of Microsoft DNS, DHCP, & WINS services.
• Produce hardware/application deployment guides and documented changes to current network architecture
• Escalation point for on-call system support after hours, troubleshooting and resolving network and application issues to minimize downtime.

Environment: Cisco 3800, 7200, 7600, ASR 1002, Series Routers, Cisco 2960, 3750-G, 4500, 6500 Series Catalyst Switches, DHCP, DNS, Cisco Packet Tracer 6.0.1, HDLC, MPLS, IPSec & IKE, NCP, PPP, Cisco VOIP, Citrix, Bridges, ATM Switches, Cisco routers, WAP-wireless access points.

Confidential

Network Engineer

Responsibilities:

• Expertise in managing end to end flow journeys including order provisioning, order configuration and order completion.
• Provide Level 2 and Level 3 support to the customer.
• Resolve tickets for networking team in order to meet defined Service Level Agreement (SLA).
• Responsible for LAN and WAN network operations, system disaster recovery, system backup, and network security.
• Managed and troubleshoot of Cisco Unified Communications Systems and IP phones.
• Configured and maintained Cisco Routers 2800, 2600 series and Cisco switches 2960, 3650 series in multi VLAN environment and inter VLAN routing.
• Worked on route redundancy for core routers using HSRP and GLBP.
• Configured AAA server with TACAS+ protocol to provide authentication to users and maintain user accounting details.
• Configured RIP, EIGRP, OSPF, BGP routing and IP access filter policies.
• Worked on the upgrades on Cisco Routers during production maintenance windows.
• Implemented BGP Mutihop for Load Balancing and preventing SPOF utilizing parallel lines.
• Deployed the services including: VOIP, Video Conferencing over IP, Security over IP, and Windows Active Directory services.
• Configured BGP Multihoming connecting two different service providers.
• Changes in BGP attributes such as Weight, Local Preference, MED and Extended Communities.
• Performed network testing for all upcoming agency requirements. Tasks include, acquiring hardware products from vendors, and testing several layer 2 and 3 functionalities, such as, switch stacking, link aggregation (LACP), 802.1q Trunking, VLANs, access control lists (ACLs), DHCP, SNMP and various spanning-tree (RSTP, MSTP), routing (RIPv2, OSPF), and routing redundancy (VRRP, HSRP) protocols.
• Run scripts to automate test cases for additional regression and performance testing.

Confidential

Network Engineer, Jr.

Responsibilities:

• As a staff member of network specialist, my responsibility was to designed and analyzed plans to meet customer’s requirements in IT projects remotely.
• Responsible for service request tickets generated by the help-desk in all phases such as troubleshooting, maintenance, upgrades, patches, fixes, and all around technical support.
• Performed route redistribution and manipulated route updates using distribute lists, route-maps and administrative distance.
• Monitoring the network through network watsup goal.
• Provide technical support and manage on LAN/WAN technologies to end-users as a member of Network Monitoring Team.
• Perform network discovery and monitoring tasks for several client sites remotely.
• Monitor and test network performance and provide network performance statistics using Network protocol analyzer for Windows and UNIX.
• Migrating Frame-Relay network to MPLS-based VPN for customer’s WAN infrastructure.
• Implemented Routing protocols like OSPF, BGP and configured MPLS on PE routers.
• Worked on Route-Reflectors to troubleshoot BGP issues related to customer route prefixes.
• Testing the redundancy protocols on Catalyst switches such as HSRP, VRRP and GLBP.
• Experience in designing IP addressing structure, Sub-netting, VLSM.
• Designed and configured networks using routing protocols such as RIPv2, OSPF, BGP and NAT.
• Configured, installed, and managed DHCP, DNS.
• Responsible for support, Implementation and troubleshooting the LAN/WAN and security infrastructure.
• Configuration and installation of Cisco 2921, 3845, 7206 routers and Catalyst 4500 and 6500 series switches.
• Gathered user's information and determine the issue by evaluating and analyzing the experienced problems.
• Diagnosed and resolved technical hardware and software issues involving internet connectivity, email clients, Network Cabling, and installation network equipment.
• Created and maintained services both internal and external such as DHCP, DNS, NTP, FTP, SSH, WWW, Secure Web mail, and Secure Authenticated Email.
• Troubleshoot routing protocols OSPF and BGP on company’s complex multiprotocol architecture.
• RIP to OSPF migration at certain branch sites and Implemented OSPF stub networks at some sites.
• Designed and implemented Ethernet campus infrastructure based on Cisco 6500 switches, 4006, 2950, 3548, and 3524.
• Create and manage users on Windows Server 2003.

Environment: s: Oracle VMware, Confidential Delivery Tools - IBM Rational ClearCase and ClearQuest, Cisco 3800, 7200, 7600, ASR 1002, Series Routers, Cisco 2960, 3750-G, 4500, 6500 Series Catalyst Switches, PIX/ASA, MPLS, Frame-Relay, VOIP, OSPF, BGP, VLANs, STP, VRRP, Port Security, VPN, Load balancers.