SUMMARY:

• Network Engineer with 8+ years of experience in Designing, Implementing and troubleshooting various Network Technologies.
• Provide scalable, supportable TCP/IP security solutions along with expert TCP/IP network designs that enable business functionality.
• Hands - on experience, specializing in Cisco Environment in Data Center, systems, network and user administration, LAN / WAN and Security.
• Administration, engineering, and support for various technologies including proficiency in LAN/WAN, routing, switching, security, application load balancing, and wireless.
• Experienced in installation, configuration, design and ongoing maintenance of Cisco router and switches.
• Worked on Cisco Catalyst Switches 6500/4500/3500 series.
• Responsible for Juniper and Cisco firewall administration across global networks.
• Knowledge of managing, maintaining, administering, troubleshooting high end network devices such as cisco routers switches and firewalls.
• Policy development and planning / programming on IT Security, Network Support and Administration.
• Knowledge of Juniper VSRX, including virtual systems, routers and switches
• Experience in Network LAN/WAN deployment.
• Experience in Generating RCA (Root Cause Analysis) for critical issues of layer1/layer2/layer3Problems
• Experience in installing and configuring NSX SDN Stack.
• Experience with DNS/DFS/DHCP/WINS Standardizations and Implementations.
• Network Administration, monitoring networks for vulnerabilities or intrusions.
• Extensive understanding of networking concepts, (IE. Configuration of networks, router configuration and wireless security, TCP/IP, VPN, Content Filtering, VLANs, and routing in LAN/WAN, Ethernet Port, Patch Panel and wireless networks.)
• Experience inNetworkEngineering with primary focus on System Administration, AWS,Azure, Cloud Computing, Support, Operations and Data Center.
• Experience with Network Redesign for Company Campus Locations and Moving from 6500 based Data Center to Nexus based Data Center.
• DeployedMerakiWirelessinstallation.
• Built LAN/WAN TCP/IP network comprised of Cisco Switches (6500, 6509, 7613, 3550, 4900, 2960, 2950, 2900XL), Nexus 2k, 5k, 7k.
• Management and Monitoring by use of SSH, Syslog, SNMP and Bluecoat Proxies.
• Installation, configuration and troubleshooting of DNS and DHCP servers.
• Hands on experience in implementation of Router Redundancy Protocols like HSRP, VRRP and High proficiency in implementation of routing protocols EIGRP, OSPF and BGP.
• Configured IP addresses and subnet masks on workstations
• Configured Cisco routers and switches to hosts or servers Configured mail exchange servers, and other servers on Microsoft Outlook, and Mozilla Setup email on mobile phones and email exchange servers such as POP, POP3, IMAP, and SMTP.
• A broad understanding of computer hardware and software, including things such as installation configuration, management, troubleshooting, and support.
• Experience in Active Directory, GPOs, File & Print Server, FTP, Terminal Server, NAT, and Exchange Mail Server.
• Experienced with SDN, testing and automation.
• Knowledgeable about IP Multicast, IGMP, IGMP version 2 and 3, CGMP, IGMP Snooping, PIM-Sparse and Dense Mode, F5/Big-IP Load Balancer.
• Have knowledge on F5 load balancers LTM and GTM series like 7050, 4800v,2200.
• Coordinated with network operations center (NOC) for change notifications, alerts and escalation of security incidents.
• Knowledge with Cisco Call Manager, Unified Communications.
• Administration of production Windows Servers infrastructure that includes Domain Controllers, IIS Web Servers, SharePoint, File and Print and FTP/SFTP servers.
• Extensive experience in Windows 2008 R2/2008/2003 Wintel Servers at single or multi domain platforms.
• Proficient in installing and configuring Windows Server 2003, 2008, 2012 and Windows XP, 7 & 8 Professional Client Operating Systems.
• Experience in Microsoft Office Suite, Visio and Outlook

TECHNICAL SKILLS:

Routers: Cisco 2600, 2800, 3700, 3800, 3900, 7200, 7600 series, ASR9k, Juniper mx 960

Switches: Cisco 3550, 3750, 4500, 6500 series & nexus 7k, 5k, 2k, 1000v, 1010

Load Balancer: Cisco CSS, F5 Networks (Big-IP)

WAN Optimization: Cisco WAAS, PPP Multilink, Riverbed

Routing: OSPF, EIGRP, BGP, PBR, Route Filtering, Redistribution, Summarization, Static Routing

Switching: VLAN, VTP, STP, PVST+, RPVST+, Inter VLAN routing & Multi-Layer Switching, Multicast Operations, Layer 3 Switches, Ether channels, Transparent Bridging

LAN: Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI, CDDI, Token Ring, ATM LAN, Emulation

WAN: Leased lines 64k - 155Mb (PPP / HDLC), Channelized links (E1/T1/E3/T3), Fiber Optic Circuits, Frame Relay, ISDN, MPLS, Riverbed, DMVPN

IP Telephony: VOIP, T1/T3, ISDN, PRI, Unified Call Manager

Wireless: Cisco 4400 Wireless Controller (WLC) and 1100, 1200 series Access Points

Firewalls: Cisco PIX, ASA, Juniper Net screen, Palo Alto, SRX

Features & Services: IOS and Features, HSRP, GLBP, IRDP, NAT, SNMP, SYSLOG, NTP, DHCP, CDP, DNS, TFTP and FTP Management

AAA Architecture: TACACS+, RADIUS, Cisco ACS

Network Monitor Tool: MRTG, Netbrain & Solarwinds & Cisco Prime Infrastructure

Protocol Analyzer: Wireshark

Security: Cisco ASA, Juniper SRX, Palo Alto

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

PROFESSIONAL EXPERIENCE:

Confidential, Los Angeles, CA

Network Engineer

Responsibilities:

• Configured and installed VoIP CUCM and cisco unity system, prepared network assessment for testing utilization for VoIP traffic and deployment and trained the user with more value-added services.
• Worked on MPLS for redirecting data from one network node to another network node based on the shortest paths.
• Install and monitor application traffic using network protocol monitoring tools such as NTOP or Wireshark to analyze network usage and bandwidth and run diagnostic programs to resolve problems.
• Involved in Network support, implementation related internal projects for establishing connectivity between the various field offices and data centers.
• Configured and maintained OSPF protocol which included deployment of new locations in the existing infrastructure created Stub/areas and configured summarization for effective routing.
• Experience with moving datacenter from one location to another location, from ASR1006 to Nexus 7010.
• Worked on Philips project deploying the patient monitors.
• Responsible for Crossroads rollout LAN/WAN problem determination and diagnosis, provide project leadership (onsite, offsite).
• Managed and modified the availability of LAN and WIFI resources in the Microsoft server and active directory environment.
• Participating in the design and planning aspects of the network infrastructure that is installed in the new building and testing of the internal network infrastructure in the new building and troubleshooting and remediating any issues.
• Manual testing of l2, protocols such as STP, RSTP and checking whether they work properly on switches. And then configuring the VLANS on Cisco switches.
• Responsible for performing the functional testing and bug verification of L3 protocols using cisco routers.
• WAN optimization POC utilizing Riverbed steelhead, Cisco WASS and silver peak appliances. Configured and installed devices into pilot sites and production data center.
• Worked on different monitoring tools like what’s up gold, stat seeker, Net brain.
• Configured and installed switches like 3850, 4510 and installing at wan sites as per the customer requirement.
• Configuration and installation of LAN switches and wireless network infrastructure equipment and cabling all uplink and user network connections.
• Worked on ONS DWDM 15414 ring 1 and ring2.
• Working with the DIRM Networking team and NC FAST IT staff to review current VLAN configuration, IP routing and firewall access control for existing networks, and applying the necessary network and security access rules to the installed equipment.
• Hands on experience on Infoblox to assign IP blocks
• Worked with F5, CISCO ACE 4710 Load balancers, GSS and Wireless networks.
• Deployed Cisco Catalyst 7509, 6500, 4500, 4000, 3750, 3850, 3560 (Layer 2 through 7).
• Deployed and configured Cisco ASR 1000, 7000, 9000 series routers.
• Experience in working with Nexus OS, IOS, CATOS and Nexus 7K, 5K & 2K Switches.
• Deployed Juniper switches EX4500 and EX4200, routers M7i and M10i and Junos OS.
• Deployed Cisco 2500 and 5800 Series Wireless Controllers and 1xxx and 2xxx series Access Points.
• Worked and working with Cisco ASA 5525 firewalls with current and demonstrated expertise with ACL security in a multi-VLAN environment.
• Worked with Firewall DMZ zones and configuring them.
• Experience in working with load balancer for converting CSS to ACE.
• Experience in working with LTM and GTM for scaling and securing DNS infrastructure during high volumes.
• Configured Multiprotocol Label Switching (MPLS) with Routing Information Protocol (RIP) on the customer’s stage.
• Experience with Security- Firewalls, NAT / PAT, IPSEC, S2S.
• Experience with ALG (RTP, RSTP and FTP, DNS, HTTP), DHCP.
• Knowledge of with API’s for troubleshooting Network issues using Wireshark and NTOP.
• Back up a Cisco IOS to a TFTP server and Upgraded and restored a Cisco IOS from TFTP server.
• Worked with Infoblox for secure DNS, DHCP and IPAM.
• In-depth expertise in the implementation, optimization, troubleshooting and documentation of LAN/WAN networking systems.
• Responsible for monitoring and controlling of RSA envision SIEM aligned to internal PCI and SOX controls.
• Familiar with the working environment of Palo alto networks.

Environment: Cisco catalyst (9300, Cisco 3850, 4510), Nexus (7010), DWDM (ONS 15414) Routing protocols (OSPF, BGP), Switching protocols (VTP, STP)NEW CENTURY HEALTH, Brea, CAOct 2015 - Sep 2017

Senior Network Engineer

Confidential, Columbus, OH

Network Engineer

Responsibilities:

• Involved in configuring and implementing of composite Network models consists of Cisco7600, 7200, 3800 series routers and Cisco 2950, 3500, 5000, 6500 Series switches.
• Configured Nexus 7010 including NX-OS Virtual Port Channels, Nexus port profiles, Nexus Version 4.2 and 5.0, Nexus VPC peer links.
• Participated in the installation, configuration, and post installation daily operational tasks and configuration of the deployment of Cisco Nexus equipment.
• Designed 10 gigabit networks using Cisco Nexus 7000 series switches, and Cisco 3800 series routers.
• Configured Networks using routing protocols such as OSPF, BGP and manipulated routing updates using route-map, distribute list and administrative distance.
• Worked as a member of the NOC groups to troubleshoot issues related to IP phones, Connectivity and application slowness
• Troubleshoot issues with Wireless Access points (Cisco 3502) and configure SSID’s on 4506 Wireless LAN Controllers.
• 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)
• Designed, planned and performed failover testing with various extranet clients successfully
• Tuned BGP internal and external peers with manipulation of attributes such as metric, origin and local preference.
• Worked with Nagios for monitoring of network services (SMTP, POP3, HTTP, NNTP, ICMP, SNMP, FTP, SSH)
• Responsible for configure, test and implement network, firewall and security solution with appliances such as Cisco, Juniper Netscreen and Palo Alto Networks application firewalls
• Involved in design, implementation and configuration of HSRP for load balancing on L3 switches on different location of office on the switched network.
• 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.
• Configured and installed Wireless Access Points at different company’s location and managed them through Wireless LAN Controller (Cisco).
• Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
• Configured and troubleshoot Autonomous and CiscoMerakiand Access Points.
• Provided full visibility and notification of authorized and unauthorized network access with integration of CISCO ASA/FWSM and NAC solution.
• Installed, configured and set security policies on cisco and VPNS.
• Analyzed and tested network protocols (Ethernet, TCP/IP) using Wireshark tool.

Environment: OSPF, EIGRP, BGP, LAN, WAN, MPLS, Nexus 2K,5K,7K, PIX 501, Cisco VPN Cisco switches (7600, 7200, 3800 series, Nexus 7010), Cisco routers (2950, 3500, 5000, 6500 Series)PHILIPS HEALTHCARE, Alpharetta, GA Apr 2012 - Jul 2013

Network 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.
• Worked with MSC- Microsoft system center manager.
• Configured various Routing protocols such as, OSPF, EIGRP, static routing.
• Provided configuration of STP and Port Security on Catalyst 6500 switches.
• Configure the Cisco CRS-1 Routing System, back out of configuration changes, and restore older versions of a configuration.
• Troubleshooting of Cisco 2800, 2900, 3900, 7200, 7600, ASR9k, CRS Series routers.
• Configure the Cisco IOS XR security features in both owner SDR and non-owner SDRs.
• Worked with Juniper Net Screen 500/5200 and also juniper SRX 650/3600.
• Worked on Fiber channel over Ethernet (FCOE) for connecting 10gigabit Ethernet networks.
• Maintaining Core Switches, creating VLANs and configuring VTP.
• Optimized performance of the WAN network consisting of Cisco 3550/4500/6500 switches by configuring VLANs.
• Experienced working with Tomcat and Apache servers in troubleshooting network issues for our internal server teams.
• Worked with Enterprise Intrusion Detection / IPS (Snort, Source fire, Juniper IDP, IBM ISS).
• Designed on - premise IVRs for integrating with the ACD and CRM systems to ensure maximum efficiency in call handling.
• Executed BPDU Guard, port-fast, uplink fast and other spanning tree features on various layer 2 and layer 3 switches.
• Worked on video from end-point in the network.
• Troubleshooting advanced Riverbed Issues and settings.
• Configured and optimization settings of Riverbed.
• Configured static NAT, dynamic NAT, dynamic NAT overloading.
• In-depth expertise in the implementation, optimization, troubleshooting and documentation of LAN/WAN networking systems.
• Route configuration and point code checks for System Technician and Network Technician.
• Worked with other team members in testing of the network architecture.
• Participated in quality system implementation project.
• Configure wireless routers on enterprise network.

Environment: Cisco 3550/4500/6500 switches and Cisco 2800/2900/3900/7200/7600 routers, Cisco ASA, Checkpoint, WAN, LAN, OSPF, BGP, EIGRP.

Confidential

Network Engineer

Responsibilities:

• Involved in Configuring and implementing of Composite Network models consists of Cisco7600, 7200, 3800 series routers and Cisco 2950, 3500, 5000, 6500 Series switches.
• Implemented various EX, SRX and J series juniper devices.
• Configured networks using routing protocols such as OSPF, BGP and manipulated routing updates using route-map, distribute list and administrative distance for on-demand Infrastructure.
• Configured OSPF redistribution and authentication with type 3 LSA filtering and to prevent LSA flooding.
• Worked on F5 BIG-IP LTM 8900, configured profiles, provided and ensured high availability.
• Configures Cisco 1231 Access points with 5959 and 4941 antennas (802.11/a/g).
• 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 HSRP and 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 OSPF on the customer’s Site.
• Extensively worked on Nexus 5k and 7K, configured and troubleshooted.
• Continually monitor, assess and improve network security, test and implement new security technologies.
• 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 authenticate users that connects to a VPN 3000 Concentrator.
• Deployment of use cases such as SaaS, IaaS, and data center migration.
• Configured BPDU Guard, port-fast, uplink fast and other spanning tree features.
• Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
• Implementing NAT solutions on wan applications
• Responsible for day to day management of Cisco Devices, Traffic management and monitoring.
• Migration from Cisco to Palo Alto firewall.
• Worked on Cisco Routers, Active /Passive Hubs, Switches, Cisco PIX Firewall, Nortel VPN Concentrators TCP/IP, NAT and Checkpoint ESX/GSX firewall.

Environment: Cisco 3750/3550/3500/2960 switches and Cisco 3640/12000 /7200/3845/3600/2800 routers, Cisco ASA5510, Checkpoint, Cisco Nexus7K/5K, 2248 / 3560 / 5020 / 6509 , VPN, EIGRPBGP, OSPF, Cisco Wi-Fi router ISP, 800, MSE, LTM.

Confidential

Network Engineer

Responsibilities:

• Worked on Cisco 2500, 2600, 2800 series routers and 1900, 2900 series switches
• Replaced outdated Cisco switches and routers in existing Data center and installed new Cisco switches and routers including migration of 2500 to 2600 series router
• Designed the IP addressing scheme using VLSM and configured IP addressing Performed activities such as initial user account creation, established LAN connectivity, file and resource sharing management, internet connectivity, FAX and email service setup
• Expanded LAN to accommodate 200 plus users. Coordinated installation and repair work. Diagnosed and corrected clients network related issues
• Installed and configured LAN/WAN as per organizational / client requirements, governed by communication protocols
• Performed tasks that include Configuring and constant administration of Static routing, Default Routing & dynamic Routing Protocols like OSPF & EIGRP.
• Implemented dedicated VLAN ID for all trunk ports, set user ports to non-trunking, and deployed port security when possible for user ports for layer 2 security
• Worked to set up the TFTP server for backing up the IOS images and configuration files of Cisco Routers and Switches and troubleshooting the file servers.
• Performed network evaluations, troubleshooting a variety of network problems, and implementing various software and hardware upgrades efficient performance.
• Troubleshoot Cisco hardware: Inspected devices, Read device LEDs, loose connections, cards, dirty devices, interior IOS upgrade, switch configuration usage of Visual Switch Manager, switch port configuration, port monitoring. Watch over Flooding Control/Network port.

Environment: Cisco routers, switches, ASA Firewalls, OSPF, EIGRP routing protocols, VLANS, Cisco work, WAP.