SUMMARY

• Cisco and Juniper Certified Network Professional with 7 Plus years of experience in network system design, Implementation, administration and troubleshooting
• Experienced Cisco/Juniper Firewall, Security and Network Administrator as well as a Certified Network Professional, routing and switching
• Worked on F5 LTM, GTM series like 6400, 6800, 8800, Viprion for the corporate applications and their availability
• Knowledge in planning, design, implementing and troubleshooting complex networks and advanced technologies
• Identify, design and implement flexible, responsive, and secure technology services
• Experience with Firewall Administration, Rule Analysis, Rule Modification and project implementations
• Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms
• Advanced knowledge in Cisco ASA 5000 series and Juniper SRX installation, configuration and maintenance
• Working knowledge of networking devices such as Routers, Switches, Firewalls, WAN Optimizers and Wireless Devices (Controllers and Access Points)
• Adept at configuring and troubleshooting of VPC on Nexus 7Ks, 5Ks and VDC on NX7Ks
• Expertise in Configuration of Virtual Local Area Networks (VLANS) using Nexus 7Ks, Cisco routers and multi - layer Switches and supporting STP, RSTP, PVST, RPVST along with trouble- shooting of inter-VLAN routing and VLAN trunking using 802.1Q
• Expertise in configuration of routing protocols and deployment of OSPF, EIGRP, BGP and Policy routing over Cisco Routers, Switches (Nexus 7Ks, Catalyst 6500)
• Experience with NX-OS and ISSU on Nexus Switches
• Excellent experience in working with Cisco 1800, 2500, 2600, 2620, 2800, 2900, 3600, 3800, 3900, 7200, 7600 and ASR 1000, 9000 series Cisco Routers
• Experience working on Juniper series of devices like MX-960, MX-480, MX-104, M10i, M7i, SRX-550, SRX-240, SRX210 and EX, QFX series of switches
• Experienced in working with Cisco 2900, 3500, 3700, 4500, 6500 series Cisco Catalyst Switches and Nexus Switches 2200, 5500 and 7000
• Expert in configuration and deployment of dynamic routing protocols OSPF, EIGRP & BGP over Cisco Routers
• Worked on Migration projects involving the refresh of devices from Cisco to Juniper in the network infrastructure
• Expert in Configuration and troubleshooting of Virtual Local Area networks (VLANs) using Cisco routers and multilayer Switches supporting STP, RSTP, PVSTP, MSTP and IEEE 802.1q, inter VLAN routing and VLAN trunking
• Implemented redundancy with HSRP, VRRP, GLBP, and Ether channel technology (LACP, PAgP)
• Router configuration for L2/L3 LAN and WAN networks and Intra company networks
• Implemented traffic filters using Standard and Extended access-lists, Distribute-Lists, Route Maps and route manipulation using Offset-list
• Aware of automation in network based environments with programming knowledge with Python using orchestrators like Ansible
• Experience in installation of python modules like paramiko, netmiko, PyEZ and Other frameworks like Robot, Jinja etc
• Experience in technical documentation of MOPS, Project handoff documents and Visio Drawings
• Aware of procedures in change management and implementation of changes in accordance to the procedures
• Hands on experience in using various Network Monitoring and Packet Sniffing tools
• Strong interpersonal, organizational communication, customer service & presentation skills

TECHNICAL SKILLS

Cisco Routers: 7600, 7500, 7200, 3800, 3700, 3600, 2800, 2600, 2500 and 1800 series

Cisco Switches: Catalyst 6500,4500, 4000, 3750, 3550, 3500XL, 2950, 2900XL series

DataCenter Switches: Nexus 7009, 7018,5548, 5596

Layer2 Protocols: VLAN, VTP, Inter-Vlan routing, STP, RSTP, PVST, MSTP, 802.1x

Layer3 Protocols: RIP, IGRP, EIGRP, OSPF, BGP, IS-IS, HSRP, VRRP, IPv6

WAN Technologies: Frame Relay, ISDN, PPP, ATM, MPLS

Infrastructure Services: DHCP, DNS, SMTP, POP3, FTP, TFTP

Network Managements: SNMP, SSH, Telnet, ICMP

Network Securities: NAT/PAT, VPN, Filtering, Load Balancing, IDS/IPS, Cisco ASA, IPSec, ACL

Load balancing: f5 Big IP, CiscoACEload balancers

Operating Systems: Windows Vista/XP/NT/2003, MS DOS, UNIX, Linux

Monitoring tools: WireShark, Netscout, Cisco’s Packet tracer, GNS3 and Statseeker

PROFESSIONAL EXPERIENCE

Senior Network Engineer

Confidential, Sunnyvale, CA

Responsibilities:

• Performed networkengineering, planning and implementation of WAN & LAN, studied single point failures and implemented WAN structure in such a way that there are no failures in network
• Implemented LAN networksby configuring Access layer switches such as Cisco 4510, 4948, 4507 switches
• Setting up VLANS and configuring dot.1Q trunk on Gigabit Ethernet channel between switches
• Maintenance of layer2 switches which advocate VLAN, VTP, STP, RSTP, PVST, RPVST; implementing port aggregation & link negotiation usingLACP and PAGP along with troubleshooting of inter-VLAN routing
• Performed networkmonitoring and packet tracing using tools like Wireshark, OPNET
• Troubleshooting on networkproblems with Wireshark, identify issues related to application slowness and optimization
• Mapped, NetworkDiagrams and physical identification in MS Visio and maintained Visio documentations for Clients
• Designed and configured the commands for QoS and Access Lists for ASA and SRX Devices
• Deployed a large-scale HSRP solution to improve the uptime of collocation customers, when a core router became unreachable
• Experience configuring Virtual Device Context in Nexus 7010 in the datacenter devices in Atlanta and Fortworth Datacenters
• Configured VPC between the Nexus 7010 and 5548 devices connecting to the servers in the infrastructure
• Experience with configuring Nexus 2000 Fabric Extender (FEX) which acts as a remote line card Redistribution of routing protocols to act as a Top-Of-Rack Switch
• Worked with F5 LTM, GTM and Viprion Big IP load balancers to add nodes, pools and VIP’s
• Experience configuring VIP, WIP, Pools and nodes on the GTM/LTM devices
• Configuring and implementing F5 BIG-IP load balancer to maintain local and global traffic
• Basic and advance F5 load balancer configurations, including migrating configurations from Cisco ACE to F5 and general troubleshooting of the F5 load balancers
• Monitored network for optimum traffic distribution and load balancing using Solar winds
• Experience migrating point to point circuits to a Metro-Ethernet MPLS Based circuits using various providers like L3, Centurylink, AT&T and Windstream across various branch locations
• Configured routing to route the flow of traffic per customer requirement as primary, backup and load splitting
• Worked extensively on Juniper Firewalls (SRX 110,210,240,650) & Cisco ASA 10,5540&5585) Series
• Monitored usage of network resources with Cisco works, and Algosec on Cisco ASA Firewalls
• Resolve trouble tickets based on the priority and co-ordinate with respective teams to resolve issues during outages
• Responsible for monitoring alerts through tools like Solarwinds Orion, xenoss, scrutinizer in the Production environment as a part of first response for the service desk
• Implemented changes in projects in accordance with the change management process and responsible for MOPS, Post-Implementation handoff documents and visio drawings

Network Support Engineer

Confidential, Plano, TX

Responsibilities:

• Worked on 3560, 3750, 3850, 4510,4500-X, 6509 series Cisco Catalyst switches, and 2248, 5020, 5548 and 7010 Cisco Nexus switches in multi VLAN environment for the implementation of inter-VLAN routing, 802.1Q trunking, and Ether Channel
• Performed network administration tasks such as creation and management of VLANS, Port security, Trunking, RPVST+, Inter-VLAN routing, and LAN security
• Adept at configuring and troubleshooting of VPC on Nexus 7Ks, 5Ks and VSS on Cat 6509, 4500-X
• Expertise in Configuration of Virtual Local Area Networks (VLANS) using Nexus 7Ks, Cisco routers and multi-layer Switches and supporting STP, RSTP, PVST, RPVST along with trouble- shooting of inter-VLAN routing and VLAN trunking using 802.1Q
• Resolved various trouble tickets related to routing (BGP, EIGRP, Static Routes, prefix-list, route-map, distribute-list, route-redistribution), switching (VLAN, port security, trunking, STP, VPC, HSRP, FEX)
• Configuration of site-to-site VPN connections (IPSec/GREtunnels, DMVPN) to support diverse network connections to extranet clients
• Worked as a member of the NOC groups to troubleshoot issues related to IP phones, Connectivity and application slowness
• Configured and installed Wireless Access Points at different company’s location and managed them through Wireless LAN Controller (Cisco)
• Troubleshoot issues with Wireless Access points (Cisco 3502) and configure SSID’s on 4506 Wireless LAN Controllers
• Designed, planned and performed failover testing with various extranet clients successfully involved in design, implementation and configuration of HSRP for load balancing on L3 switches on different location of office on the switched network
• Expertise in configuration of routing protocols and deployment of OSPF, EIGRP, BGP and Policy routing over Cisco Routers, Switches (Nexus 7Ks, Catalyst 6500)
• Performed ISSU on Nexus Switches and responsible for troubleshooting application latency
• Managed inventory of all network hardware, Management and Monitoring by use of SSH, Syslog, SNMP, NTP
• Performed maintenance and troubleshooting of connectivity problems using PING, and Trace route
• Used DHCP to automatically assign reusable IP addresses to DHCP clients via Infoblox IPAM
• Configured and maintained OSPF protocol which included deployment of new locations in the existing infrastructure created Stub/areas and configured summarization for effective routing
• Configured OSPF on ASR 1002/9001 Cisco routers at various back offices across US
• Configured ACLs in Juniper SRX 3400 firewall for Internet Access requests for servers, Protocol Handling, Object Grouping and NAT
• Experience setting up SRX 240 HA Pairs on the branch firewalls for redundancy
• Configured SPAN and RSPAN for network monitoring
• Worked on network-based IT systems such as racking, stacking, cabling and module replacement
• Gained experience in troubleshooting Cisco IP phone

Network Engineer

Confidential, Somers, NY

Responsibilities:

• Ensure tickets are satisfactorily resolved in a timely manner with focus on providing a high level of support for all customers.
• Experience in Configuration and Support of LAN protocols on Cisco Switches (Layer2, Layer3 and MultiLayer)
• Involved in the configuration of BGP as a WAN protocol, and OSPF/EIGRP as interior routing protocol.
• Configured EBGP/IBGP policies also tested BGP attributes such as Local preference, MED, AS-PATH, Community and Weight
• Configured EIGRP load balancing and ensured stability of BGP peering interfaces
• Key contributions includetroubleshooting complex LAN/WAN infrastructureincludingrouting protocolsEIGRP, OSPF & BGP
• Resolved network issues, ran test scripts and prepared network documentation
• Involved in troubleshooting of DHCP and other IP conflict problems.
• Performed switching technology administration including VLANs, inter-VLAN routing, Trucking, STP, RSTP, port aggregation and link negotiation
• Participated in on call support in troubleshooting the configuration and installation issues
• Experience Working on Cisco 6509 and 4507 series switches for LAN requirements, that includes managing VLANs, Port Security and troubleshooting LAN issues
• Configuration of Access List ACL (Std, Ext, Named) to allow users all over the company to access different applications and blocking others
• Dealt with NAT configuration and its troubleshooting issues related access lists and DNS/DHCP issues within the LAN network
• Actively involved introubleshooting on network problems with Wire shark, identifying and fixing problems
• Documenting workflow process, managing and implementing standard policy and procedures.
• Responsible for technical documentation and Visio Drawings for the implemented projects
• Involved in Attending meetings and technical discussions related to current project

Network Support Engineer

Confidential

Responsibilities:

• Performed IOS upgrades on 2900, 3500 series Cisco Catalyst switches and 1800, 2600, 3600 series Cisco routers using TFTP
• Configured Cisco Routers (2621, 2621XM, 2620, 2800) and Configured Cisco Switches (Catalyst 6500, 4500, 3750)
• Extensively used TCP/IP tool like TELNET for remote login to the routers and SSH for secure login
• Connected switches using trunk links and Ether Channel
• Configured STP for loop prevention and VTP for Inter-VLAN Routing
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches
• Configured Access List (Standard, Extended, and Named) to allow users all over the company to access different applications and blocking others
• Configured EIGRP, OSPF and BGP on Cisco 7200, 2800, 3800 series of routers
• Key contributions includetroubleshooting complex LAN/WAN infrastructureincludingrouting protocolsEIGRP, OSPF and BGP.
• Configured separate VLAN for VOIP to implement QoS and security for VOIP
• Duties include new VOIPinstalls, updating system information, troubleshooting, resolving phone and network connection issues, and port security administration
• Worked with telecom vendors in regards to networkfault isolation
• Configuring ACLto allow only authorized users to access the servers on ASA firewalls
• Configuring and installing client and server networksoftware for upgrading and maintaining network and telecommunication systems
• Work with vendors to troubleshoot circuits and internet connections (ISDN, DSL, T1s, etc.)
• Provide networkconnections for new workstations
• Performed troubleshooting of TCP/IP problems and connectivity issues in multi-protocol Ethernet environment
• Worked on network-based IT systems such as Racking, Stacking and Cabling
• Ensurednetwork, system and data availability and integrity through preventativemaintenance and upgrades
• Manage and coordinate all infrastructures related to moves,adds, and changes
• Engaged in office moves, helped in identifying network requirements of new building, installed new networking hardware, and coordinated with vendors for cabling/wiring
• Provided design of both physical and logical network, optimizing performance, and implementation strategies including rebuilding the entire networkinfrastructure across four remote locations redesigning all Switches and Routers
• Participated in design and implementation of IPv4 Subnetting in the company network
• Performed scheduled Virus checks and updates on all servers and desktops
• Provided technical support on hardware and software related issues to remote production sites