SUMMARY

• Eight years of experience in the industry, which includes expertise in the areas of Routing and Switching, Security, Wireless networking and Load Balancing.
• Knowledge of implementing and troubleshooting complex layer 2 technologies such as VLAN Trunks, VTP Ether channel, Virtual Device Context (VDC), STP, RSTP and MST.
• Experience in configuring redistribution between routing protocols and troubleshooting them.
• Implementation of HSRP, VRRP and GLBP for Default Gateway Redundancy.
• In - depth knowledge and hands-on experience on IP Addressing, Sub-netting, VLSM and ARP, reverse & proxy ARP, Ping Concepts.
• Experience in configuring Ipsec VPN tunnels, GRE tunnels and DMVPN Tunnels.
• Experience in configuring MPLS VPN over BGP and also MPLS Traffic Engineering.
• Expert level knowledge of troubleshooting, implementing, optimizing and testing of static and dynamic routing protocols such as RIP, EIGRP, OSPF, BGP ability to interpret and resolve complex route table problems.
• Implementation traffic filters on Cisco routes using Standard, Extended Access list.
• Advanced knowledge of OSI model, TCP/IP, Internet technologies, system security, firewall infrastructure, network architecture and Cisco network routing / switching (Layer 2 and 3) experience, including LAN and WAN, design and implementation which include Layer 1 to Layer 7 experience.
• Exposure to Cisco QOS Configuration.
• Excellent communication skills to interact with team members and support personnel and also can act as a mentor to less experienced personnel.
• In-depth expertise in the analysis, implementation, troubleshooting & documentation of LAN/WAN architecture, frame relay and good experience on IP services.
• Experience in managing and migration of large scale enterprise networks, extensive knowledge in developing test plans, procedures and testing various LAN/WAN products and protocols.
• Experience in Wireless LAN Controller and Access Points.
• Experience in configuring Switch for Wireless LAN controller and Access Points.
• Good knowledge on implementing F5 BIG-IP load balancer.
• Experience in implementation of F5 GTM based on topology load balancing methods.
• Having experience in deploying BIG-IP F5LTM Load Balancers for load balancing and traffic management of business application.
• Cisco ASA/Checkpoint Firewall troubleshooting and policy change requests for new IP segments that either come on line or that may have been altered during various planned network changes on the network. Expert in NAT, Access List and Object Groups configurations in firewalls.
• Technical Knowledge on Cisco ASA 5500 and ASA 5550 series firewalls.
• Strong hands on experience in installing, troubleshooting, configuring of Cisco ASR, 7600, 7200, 3900, 3800, 2900, 2800, and 1800 series Routers, Cisco Catalyst 6500, 4500, 3750, 2950 and 3500XL series switches.
• Hands on experience working with Cisco Nexus 9K, 7K, 5K & 2K Switches.

TECHNICAL SKILLS

Operating System: DOS, Windows (95, 98, NT/2000, XP, Vista/7/8/10), Cisco IOS

IP Routing: RIPv1, RIPv2, BGP, OSPF, IS-IS, IGRP, EIGRP

Switching: VLANs, VTP, STP, RSTP Inter VLAN routing and Multi-Layer SwitchingLayer3 Switches, Ether channels, Dot1Q, HSRP, GLBP

Communication Protocols: TCP/IP, UDP, DHCP, DNP, ICMP, SNMP, ARP, RARP, PPP, HDLC

Topologies: Frame Relay, ATM, T1, T3, OC3, OC12, OC48, Ethernet, Cable ModemWireless

Network Peripherals: Switches CISCO 2900, 3500, 3850 … 6800, Nexus …

Routers: Cisco 2600, … 7200, 7600, Juniper M & T Series, Cisco CRS-1, CRS3, GSR

Network Management Tools: Whatsup, MRTG, HP Open view, Cisco WAN manager and Cisco works 2000

AAA Architecture: TACACS+, RADIUS, Cisco ACS.

Sniffers: Ethereal (Wireshark)

Software: Microsoft Office 2013/10/7, MS Visio, C.

PROFESSIONAL EXPERIENCE

Confidential, Allen, TX

Sr.Network Engineer

Responsibilities:

• Expertise in implementing L2 technologies including VLAN's, VTP, STP, RSTP and Trunking.
• Expertise in implementing routing protocols EIGRP, OSPF, and BGP.
• Configuring and Troubleshooting Route Redistribution between EIGRP, OSPF, IS-IS& BGP protocols.
• Resolve escalated hardware and software issues related to LAN/WAN.
• Experience with configuring Virtual Server and Configuring Load balancing methods in F5 12.0 LTM.
• Configured NAT and SNAT in F5 12.0 LTM.
• Configured Easy VPN server and SSL VPN to facilitate various employees' access internal servers and resources with access restrictions.
• Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
• Manage a very large DNS environment using Lucent QIP and manual management of DNS for DMZ/External servers.
• Experience working with Cisco IOS-XR on the ASR9000 devices for MPLS deployments.
• Responsible for day to day management of Cisco Devices, Traffic management and monitoring.
• Installed, configured and set security policies on Cisco and Checkpoint firewalls.
• Installed, configured and troubleshot Cisco wireless network, Wireless LAN controllers.
• Configured Cisco QOS features like Classification, Congestion Management, Policing and Shaping.
• Configured Modular QOS which includes Class Map, Policy Map and Service- Policy.
• Analyzed and tested network protocols (Ethernet, TCP/IP) using Wireshark tool.
• Monitored the network infrastructure using Solar Winds NPM.
• Implementation of Access Lists for allowing/blocking desired traffic.
• Experience with design and configuring Overlay Transport Virtualization (OTV) on Cisco NX-OS devices like Nexus 7000.
• Support customer with the configuration and maintenance ASA 5550 firewall systems.
• Configured object groups on ASA 5550 firewalls.
• Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500 security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with the firewalls as per the design.
• Configured Site to Site IPsec VPN tunnels to peer with different clients and each of client having different specifications of Phase 1 and Phase 2 policies using Cisco ASA 5500 series firewalls.
• Designed 10 gigabit networks using Cisco Nexus 7000 series switches, Checkpoint R77.10 firewall and Cisco 3800 series routers.
• Configuring VLANs/routing/NATing with the firewalls as per the network design.
• Responsible for Cisco ASA firewall administration, Rule Analysis, Rule Modification.
• Configuration and maintenance of PIX and ASA firewall systems.
• Configured Security policies including NAT, PAT, VPN's and Access Control Lists.
• Configuring IPSec VPN on Cisco Firewall.
• Worked on Cisco Routers 7600, 7200, 3800, 3850, Cisco Catalyst Switch 6500, 5000, 3500, 2950, Nexus 9k and 7k, T1 Controllers, DS3 Lines (T3 Lines), F5 Load Balancer, Wireless LAN controller, Wireless Cisco 3702 Access Points.

Confidential, Acton, MA

Network Implementation Engineer

Responsibilities:

• Responsible for implementing, supporting, and maintaining 24x7 network services.
• Coordinated efforts with Engineer's to ensure all network devices conformed to defined network standards.
• Support, monitor and manage the IP network.
• Packet capturing, troubleshooting on network problems with Wireshark, identifying and fixing problems.
• Configured and troubleshooting HSRP, BGP, OSPF, EIGRP, MPLS WAN, QoS and Route Maps.
• Configure BGP features such as as-override, Local pre, EBGP load sharing on client connections.
• Configured and resolved various OSPF issues in an OSPF multi area environment between multiple branch routers.
• Configured OSPF for Stub area, Totally Stubby Area and NSSA.Executed BPDU Guard, port-fast, uplink fast and other spanning tree features on various layers 2 and layer 3 switches.
• Performed redistribution with OSPF, EIGRP to enable communication with backbone.
• Troubleshoot connectivity issues involving VLAN's, OSPF, and QoS.
• Con figured VLANs with 802.1q tagging. Configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• Implemented, configured redundancy protocols HSRP, VRRP, GLBP for Default Gateway Redundancy.
• Configure the Cisco CRS-1 Routing System, back out of configuration changes, and restore older versions of a configuration.
• Managed the Cisco network infrastructure using Cisco Prime.
• Supporting accounts on implementation and maintenance of DDI/IPAM Servers on various platforms.
• Configured static NAT, dynamic NAT, dynamic NAT overloading.
• Back up a Cisco IOS to a TFTP server and Upgraded and restored a Cisco IOS from TFTP server.
• Designing and installing new branch network systems. Resolving network issues, running test scripts and preparing network documentation.
• Perform network management using HP Open View and Network Node Manager (NNM).
• Establishing VPN Tunnels using IPSec encryption standards and also configuring and implementing site-to-site VPN, Remote VPN.
• Built an accruing network via MPLS circuits to split the trusted and un-trusted traffic via a Cisco ASR.
• Performed Administration and Deployment of CUCM, Unity Connection, Presence, DSP Farm Routers.
• Upgrade to Cisco Unified Attendant Console 8.6 to 9.x, supported Customer Cisco Data Centre environment.
• Maintain and administer UCCE cluster with CUSP Routing module.
• Maintain Cisco Unified Customer Voice Portal.
• Configured the ASR to use the VRF routing functions to completely split the traffic through the network.
• Performed Migration from Cisco ACE Load Balancers to F5 LTM.
• Worked on F5 BIG-IP LTM 8900, configured profiles, provided and ensured high availability.
• Worked on F5 and CSM load balancers deploying many load balancing techniques with multiple components for efficient performance.
• Involved in Configuration of Access lists (ACL) on ASA firewall for the proper network routing for the B2Bnetwork connectivity.
• Worked with Cisco 2800, 2900, 3900, 7200, 7600, ASR, Cisco Catalyst Switch 6500, 4500, 3550, 3850, Nexus 7k and 5k, T1 Controllers, Cisco ASA 5510, Cisco ACE Load Balancer and F5 Load Balancer.

Confidential

Network Engineer

Responsibilities:

• Responsible for service request tickets generated by the helpdesk in all phases such as troubleshooting, maintenance, upgrades, patches and fixes with all around technical support.
• Performed redistribution with OSPF and EIGRP to enable communication with backbone.
• Involved in troubleshooting IP addressing issues and Updating IOS images using TFTP.
• Maintenance and Troubleshooting of connectivity problems using Ping, Trace route.
• Create a backup and recovery policy for software application and verified peripherals are working properly.
• 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 issue. Other responsibilities included documentation and support other teams.
• Hands-on experience with WAN (ATM/Frame Relay), Routers, Switches, TCP/IP, Routing Protocols (BGP/OSPF), and IP addressing.
• Experienced in WAN environments, installing and troubleshooting data circuits (OC, T1, E1, T3, and MUXES).
• Layer 2 switching technology architecture, implementation and operations including L2 and L3 switching and related functionality. This includes the use of VLANS, STP, VTP and their functions as they relate to networking infrastructure requirements including internal and external treatment, configuration and security.
• Experience in network monitoring tools like Net flow, RSA envision and Cisco IPS event viewer.
• Implementing traffic engineering on top of an existing Multiprotocol Label Switching (MPLS) network using Frame Relay and Open Shortest Path First (OSPF).
• Built site-to-site IPSec VPNs over Frame-relay & MPLS circuits on various models of Cisco routers to facilitate adding new business partners to new and existing infrastructures.
• Involved in the team of Data Center Operations to perform duties like administration and deployment of Cisco Routers and Switches according to the organization requirements.
• Worked with the data center planning groups, assisting with network capacity and high availability requirements.
• Experience with using F5 Load balancer in providing worldwide data and file sharing, continuous internet connectivity, optimized web performance.
• Experience with network based F5 Load balancers with software module GTM & Checkpoint.
• Experience with connectivity of Cisco Networking Equipment with F5 Load Balancer.
• Experience in creating and maintaining firewall configurations, updating documentation and log analysis.
• Experience installing & configuring of Cisco PIX, ASA & FWSM (Firewall service module).
• Network monitoring and bandwidth utilization using whatsup and MRTG.
• Configured Access control list and also configured Cisco ACS for AAA services using Tacacs and Tacacs+.
• Responsible for the implementation and maintenance of firewall based security zones (DMZ*s).
• Provide support to internal project teams by adding firewalls, switches and routers to managed DMZs.
• Assist internal project teams by determining rules that need to be added to the firewalls and identifying the proper routing and addressing for new devices in managed DMZ.
• Worked with Cisco 2600, 2800 and 3600 routers, Cisco Switch 1900, 6509, and 6513 and F5 Load balancers.

Confidential

Network Engineer

Responsibilities:

• Support Network Technicians as they require training & support for problem resolution including performing diagnostics, & configuring network devices.
• Configuring of IP Allocation and sub netting for all applications and servers and other needs throughout company using FLSM, VLSM addressing.
• Involved in the configuration & troubleshooting of routing protocols: BGP, OSPF, EIGRP and RIP.
• Tuned BGP internal and external peers with manipulation of attributes such as metric, origin and local Preference.
• Provided redundancy in a multi homed Border Gateway Protocol (BGP) network by tunings AS-path.
• Supporting EIGRP and BGP based on the network by resolving level 2 & 3 problems of internal teams & external customers of all locations.
• Configured OSPF redistribution and authentication with type 3 LSA filtering and to prevent LSA flooding.
• Configured OSPF over frame relay networks for NBMA and point to multipoint strategies.
• Performing troubleshooting on slow network connectivity issues, routing issues that involves OSPF, BGP and identifying the root cause of the issues.
• Maintained complex LAN/WAN networks with several VLANS and provided support for routing protocols and also providing secure sessions over internet using IPSec and SSL encryption.
• Experience in WAN connectivity using Cisco routers by using T1, T3 and frame relay connections and its troubleshooting issues.
• Design and implementation of the LAN IP infrastructure using Layer 2 / Layer 3 switching, STP, Gigabit Ethernet and Trunking / channelling technologies.
• Responsible for maintenance and utilization of VLANs, Spanning-tree, HSRP, VTP of the switched multi-layer backbone with catalyst switches.
• Configured VLAN's on Switches for Wireless Access Points.
• Configured Wireless Access Points in order to control them with RADIUS server.
• Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
• Apache Web Server & MRTG, BIND DNS Server configuration and optimization over UNIX and Active directory implementation of Windows 2003 Server.
• Implemented redundant Load balancing technique with Internet applications for switches and routers.
• Configured Cisco IOS Feature Set, NAT and Simple Network Management Protocol (SNMP) for Network Security implementation.
• Worked on Juniper J series J 230, M 320 routers and EX 3200 series switch.
• Involved in Configuring and implementing of Composite Network models consists of Cisco7600, 7200, 3900, 3800 series routers and Cisco 2950, 3500, 5000, 6500 series switches.

Confidential 

Network Technician

Responsibilities:

• Experience in Cisco switches and routers: Physical cabling, IP addressing, Wide AreaNetwork configurations.
• Managed IP addressing and implemented IP Access Lists.
• Provided testing fornetworkconnectivity before and after install/upgrade.
• Troubleshoot wiring problems and serial communication lines.
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems.
• Documented the design, implementation and troubleshooting procedures.
• Involved in network monitoring, alarm notification and acknowledgement.
• Implementing new/changing existing data networks for various projects as per the requirement.
• Performed switching technology administration including VLANs, inter-VLAN routing, Trunking, STP, RSTP, port aggregation & link negotiation.
• Experience in Per-VLAN Spanning Tree (PVST) for maintaining instance for each VLAN configured in the network.
• Experienced in configuring WAN services (PPP, FR and NAT and private addressing) and LAN services (Ethernet, VLANs, Trunking) on Cisco routers and switches.
• Maintained complex LAN/WAN networks with several VLANS and provided support for routing protocols.
• Maintaining Network Integrity on LAN and WAN Networks.
• Routing protocols OSPF, RIP, EIGRP & BGP.
• Network migration from RIP to OSPF and EIGRP.
• Have sound knowledge of Firewall architecture, routing and VPN.
• Installed and configured the ACE and CSM for firewall/Server Load balancing for Cisco Catalyst switches.
• Hands on Experience working with security issue like applying ACL's, configuring NAT and VPN.
• Upgrade firewalls in accordance with change management & Document changes to firewalls.
• Worked on Cisco Routers - 1700, 2600, 2800, 3200 and Cisco Switches - 1900, 6509, and 6513, Cisco ASA 5500 Firewall, Cisco Security Manager, Cisco ACE load balancer.