 Well Experienced in configuring protocols HSRP, GLBP, ICMP, IGMP, PPP, PAP, CHAP, and SNMP Experience in installing and configuring DNS, DHCP servers Conversions to BGP WAN routing Convert Branch WAN links from TDM circuits to MPLS and to convert encryption from IPSEC/GRE to GetVPN Experience with configuring Cisco 6500 Virtual switching system in Distribution layer of the Data center network Experience working with Nexus 7010, 5548, 5596, 2148, 2248 devices Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256  Experience with setting up MPLS Layer 3 VPN cloud in data center and also working with BGP WAN towards customer Configure and troubleshoot Juniper EX series switches and routers Migrated Juniper EX series switches to Cisco 3500 series and 6500 series switches Network security including NAT/PAT, ACL, and ASA Firewalls Worked extensively on Cisco ASA 5500(5510/5540) Series, experience with convert PIX rules over to the Cisco ASA solution DesigningF5 solutions/support for migration work of applications and websites from Cisco CSS Load Balancers to the F5 BigIP Load Balancers Installed and Configured the F5 BIG-IP LTM, configure virtual servers and associate them with pools for internal web servers Involved in configuring Juniper SSG-140 and Check point firewall Installed dual DS-3 SAN replication WAN with Riverbed Interceptors and 6050 Steelhead appliances to optimize the traffic Configuring rules and Maintaining Palo Alto Firewalls & Analysis of firewall logs using various tools Switching tasks include VTP, ISL/ 802.1q, IPSEC and GRE Tunneling, VLANs, Ether Channel, Trunking, Port Security, STP and RSTP Enabled STP attack mitigation (BPDU Guard, Root Guard), using MD5 authentication for VTP, disabling all unused ports and putting them in unused VLAN and ensuring DHCP attack prevention where needed Automated network implementations and tasks and designed monitoring tools using python scripting

 Configured, Maintained the Routers and Switches and Implementation of RIP, EIGRP, OSPF, BGP routing protocols and troubleshooting Remote infrastructure management of offices in different locations nationwide Involved in Configuration of Access lists (ACL) on checkpoint firewall for the proper network routing for the B2B network connectivity  Created effective network security by migrating from Check Point FW-1 NG to ASA 5510 Firewalls Designed and configured of OSPF, BGP on Juniper Routers and SRX Firewalls Installed, configured, and maintained Cisco Switches (2900, 3500 ,7600, 3700 series, 6500 series) Cisco Routers (4800, 3800, 3600, 2800, 2600, 2900, 1800, 1700, 800) Build 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 Responsible for Checkpoint firewall management and operations across our global networks. Data center migration was involved in Access, Distribution and Core layers Involved in the configuration & troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, BGP v4. Configured IP access filter policies Experience with configuring Virtual Server and Configuring Load balancing methods in F5 LTM Expert in configuring Cisco Routers, Catalyst Switches, Nexus Switches Strong Knowledge in working with F5 Load Balancers and their Implementation in various Networks Develop/capture/document architectural best practices for building systems on AWS Release management of all significant public EC2 launches Maintained wireless IPS infrastructure and coordinated with management, customers and peers regarding wireless network innovations Deployed the switches in high availability configuration with HSRP Configured UDLD, port-fast, uplink fast and other spanning tree features Monitored network for optimum traffic distribution and load balancing using Solar winds

 Analyzed corporate LAN and WAN to determine the major problems and improvements needed to be made to the network infrastructure, as per the client requirements for network design, configuration, implementation and troubleshoot the network Involved in troubleshooting LAN connectivity, hardware issues in the network, IP addressing issues, created a backup and recovery policy for software application, verified the working of peripherals and Updating IOS images using TFTP Configured and performed troubleshooting on 802.11 wireless networks Worked on configuring routing protocols (OSPF, BGP4, RIP, IGRP and EIGRP) and enterprise class switches-router management (Cisco 6509, 2800, 2900, 3750, 3800, 3900) Worked on supporting a wide variety of networking components including Cisco Routers, Switches, Wireless Access Points, MPLS, Frame-Relay, ATM, ISDN, BGP, EIGRP, OSPF and RIPv2 Worked on F5 BIG-IP LTM, configured profiles provided and ensured high availability. Monitored network and servers to identify potential problems and bottleneck and troubleshoot to provide high performance Interacted with support services to reduce the downtime on leased lines Managed the IP address space using subnets and variable length subnet masks (VLSM) and Monitored the operability and reliability of the network 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 Modified and tested scripts and extended Linux system functionality as needed Other responsibilities included researching and documenting the new monitoring solutions in the market which would suit the company need

 Provided level 2-3 network support at site locations in Data centers across the US. Performed Troubleshooting and triggered network faults by analyzing network architecture and design from both a physical and logical standpoint Familiar with Cisco Catalyst 6500 Series/ 7600 Series, ASA Service Module and Intrusion detection system IDSM-2 meta event generator to prevent attacks such as denial of service (DOS) attacks Cisco products/hardware including Nexus 7k, 5k and 2k switches IOS upgrade in Nexus 7010 through ISSU (In service software upgrade) Performed Troubleshooting on VLANs, Virtual port channel (VPC) and configuration on Nexus 7k Performed Troubleshooting on unicast and multicast traffic on Nexus 7k  Installation and configuration of DNS, DHCP, IIS WEB and FTP servers Performed Troubleshooting on Nexus 5k switch crash and SPAN configuration Installing and configuring F5 Load balancers and firewalls with LAN/WAN configuration. Configuring and monitoring users by using TACACS+ Server Involved in the installation and configuration of Cisco 3500 and 6500 series switches and Nexus Platforms Configured VLANs, VLAN Trunking with 802.1Q, and Ether Channel for redundancy across distribution layer switches Performed Troubleshooting on network issues, primarily from OSI layers 1, 2, 3 standpoints

 Configured workstations for IP based LAN’s with Cisco Routers 2500, 3800, 2800 and implemented protocols RIPv2, OSPF, EIGRP and Cisco Switches 2960 and 3560 L2 and L3 security features on devices and configured DHCP Client/Server for the network designed Designed and Configured VLANs for the two major divisions of the company the finance department and all others under one VLAN, and implemented VTP Trunking on switches Configured VLANs with 802.1q tagging. Configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture Worked on and configured Inter-vlan routing, redistribution, access-lists and dynamic NAT to have a control of which departments accesses the Finance department data Worked on HSRP for hop redundancy and load balancing.  Configured the Cisco router as IP Firewall and for NATing Configured RSTP, MST and used VTP with 802.1q trunk encapsulation  Provided port binding, port security and router redundancy through HSRP Designed ACLs, VLANs, troubleshooting IP addressing issues and taking back up of the configurations on switches and router.  Worked with senior network engineers for multiple site Upgrades for data and VOIP equipment’s and also in re-configuring the new device and making sure projects are done under defined project timelines Responsible for the installation of various software components on several servers, Backing up and restoring files across the network, Troubleshooting backup and restore problems and performed day-to-day trouble shooting for the end users and OS upgrades Other responsibilities included Administrative tasks such as System Startup/Shutdown, Printing Documentation, User Management, Security, Network management

 Installed and supported LANs, WANs, network segments, and Internet, and also maintained network hardware such as Cisco routers 2600 series, 2800 series, 3600 series, 3800 series and Cisco switches Configuration and troubleshooting issues related to access lists and DNS/DHCP issues within the LAN network Worked with senior network engineers for multiple site Upgrades for data and VOIP equipment’s and also in re-configuring the new device and making sure projects are done under defined project timelines Monitored networks to ensure security and availability to specific users and modified system's performance based on the network and system requirements and to maintain integrity of the network, server deployment, and security Maintained and provided Level 2 and Level 3 technical supports for all network related issues and providing the requirements of the customer by interacting with the customer on daily basis via email and phone Created a detailed design drawing of the sites, which are under up-gradation and getting it validate from the technical design team and maintained the remote site network, consisting of QoS design, IP addressing, Visio Drawings Responsibilities included Creating Lab demonstrations for new technology deployments with loaner equipment from various vendors and presented the findings to upper management.