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Sr. Network Engineer Resume

Germantown, MD

SUMMARY:

  • Over 7+ Years of experience as Certified Network Engineer in design, implementation and administration for Enterprise Networking configuration of Cisco Routers, Switches and Firewalls, troubleshooting & fine - tuning of Firewalls, VPN configuration, troubleshooting network related problems in Enterprise& Data Center Networks
  • Working Experience of MPLS based VPN networks with knowledge of MPLS VPN concepts
  • Good understanding of NAT, PAT, VPN, IPSEC, L2TP and site-to-site VPN concepts
  • Experience with administration of ASA firewalls in the DMZ and FWSM in the Server Farm to provide security and controlled/restricted access. Also, Firewall Administration, Rule Analysis, Rule Modification
  • EIGRP/OSPF to BGP to WAN routing experience and converting Point to point circuits to MPLS circuits
  • Hands-on experience on IP Addressing, Sub netting, VLSM and ARP, reverse & proxy ARP, Ping Concepts
  • OSPF, EIGRP, BGP, Policy-based routing over Cisco Routers, configuring and troubleshooting route redistribution
  • Implemented traffic filters using Standard and Extended access-lists, Distribute-Lists, and Route Maps, Cisco ASA firewall and security administration using Checkpoint Security Firewall
  • Design and configuring of OSPF, BGP on Juniper Routers (MX960) and SRX Firewalls(SRX240)
  • Experience with Racking, Stacking, configuring, Nexus 2K, 5K and 7K and working with High performance data center switch like nexus 7000 series
  • Working Hands on Experience with 3750, 3550, 3560, 2924, 6509-V-E, 6513, 6504, 6503, 6506, 6500, 9300 series switches, Cisco 2500,2600,2800,3600,7200,7600 series routers, Juniper J series T320, MX480 series routers
  • Performed IP address planning, designing, installation, configuration, testing, maintenance, and troubleshooting in complete LAN, WAN development
  • Configured, installed, & managed DHCP, DNS, & WINS servers
  • Strong experience in Configuring F5 LTM 8950, 6900, VIPRION 2400 models.
  • Basic and advance F5 load balancer configurations, including migrating configurations from Cisco ACE to F5 and general troubleshooting of F5 load balancers.
  • Installation & configuration of Microsoft Proxy Server 2.0 & Blue Coat Proxy
  • Responsible for designing and deploying various network security & High Availability products like Cisco ASA and Checkpoint Firewall products.
  • Working knowledge of network monitoring/management tools like Wireshark, TCPdump, Cisco Prime, Net Flow, PRGT, Solar Winds.
  • Skilled in hardware, software, and networking technologies to provide a powerful combination of analysis, implementation, and support with the goal of full life cycle deployment
  • Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools
  • Experience on Microsoft, VMware, Citrix, SolarWinds, Active Directory, Sharepoint, SAN/NAS
  • Knowledge of VoIP, Cisco Unified Communications Manager (CUCME),UCCX, AAA, RADIUS, TACAACS

TECHNICAL SKILLS:

Routers: Cisco 7600, 7200, 3800, 3600, 2900, 2800, 2600, Juniper J series T320, MX480 series routers

Switches: Nexus 2K/5K/7K, Cisco Catalyst 6500, 4500, 3850, 3560, 3750, 2960,9000 JuniperEX2200, EX2500, QFX

Firewalls: Dell SonicWall, Cisco ASA, PIX, Cisco ACS, Checkpoint, Palo alto

Load Balancers: F5 Big- IP, Cisco CSS, Avaya P330

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

Switching: LAN, VTP, STP, PVST+, RPVST+, Inter VLAN routing & Multi-Layer Switch, Ether channels, Transparent Bridging

Voice: CUCM, UCCX, AVAYA

Networking Security: ACL, NAT, PAT, Port Forwarding, Port security, VPN, Proxy servers

Virtualization technology: VMware NSX, Cisco ACI

Servers: FTP, DHCP, DNS, HTTP, Syslog, TFTP

WAN: PPP, HDLC, Channelized links (T1/T3), Fiber Optic Circuits, Frame Relay

WLAN Technologies: Autonomous AP s, Lightweight AP s, WLC, WDS, Channels - 802.11 a /b/g/n/ac

Operating System: Windows Server 2008, 2012, VMware (Esxi 5.5,6.0), Windows vista/XP/7/8/8.1/10, Cisco IOS, NXOS, JUNOS

Gateway Redundancy: HSRP, GLBP, VRRP

Features & Services: IOS and Features, SNMP, SYSLOG, DHCP, CDP, TFTP, FTP.

Network Simulators: Opnet, Packet Tracer, GNS3

Network Management: Wireshark, SNMP, Net flow Analyzer, Syslog, SolarWinds, Ethereal, Putty, Secure CRT, Riverbed

Documentation: MS Office, MS Visio

Scripting language: Python, Perl

PROFESSIONAL EXPERIENCE:

Confidential, Germantown, MD

Sr. Network Engineer

Environment: Cisco routers (2500,2600) and Cisco switches (3500,2900,1900), Nexus (5K) Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP, GLBP, HSRP), Cisco PIX (525, 535), ASA (5505, 5510) firewall, F5 (Big IPV9, Big GTM/LTM), Cisco ISR 4221 series router

Responsibilities:

  • Installing, configuring and maintaining virtual machines like domain controller, terminal services on physical server (HP, using VMware esxi (5.5, 6.0) for Domain Environment
  • Responsible for maintain data network of over 2000 users
  • Installed and configured FTP, DNS and DHCP server
  • Involved in troubleshooting of DHCP and IP conflict issues
  • Managing office networks with cisco devices including 2500,2600 routers and 3500,2900,1900 switches
  • Performed switching Technology administration including VLANs, inter-VLAN routing, Trunking, STP, RSTP, port aggregation and link negotiation
  • Configured Port-security, Private-VLANS for maintaining loop free and secure environment. Implemented port aggregation & link negotiation using LACP and PAGP.
  • Configured VSL link between Cisco Catalyst Switches 6509 and 6513 to set up VSS Cluster using PAGP ether channel protocol.
  • Experience working with Cisco nexus 2148 Fabric Extender and nexus 7010 5000 series to provide a Flexible Access Solution for datacenter access architecture
  • Working with High performance data center switch like nexus 7000 series and catalyst 9000 series switches for network virtualization, group based policy access and network monitoring for SNMP tool.
  • Understanding of SDN architecture and virtualization technology Cisco ACI, VMWare NSX
  • Experience working with Virtualization, Servers and Scripting and Open Flow.
  • Configured L2 and L3 security features on devices
  • Replacing existing PIX firewall with Cisco ASA 5500 series and configuring it for primary and back up internet, port forwarding, site to site VPN, creating ACL for allowing users to access only certain applications on remote network and internet.
  • Responsible for Checkpoint/ Cisco ASA 5500 firewall administration, Rule Analysis, Rule Modification.
  • Monitoring and filtering traffic based on object groups and URLs in Palo Alto 5050, Updating creation of ACL policies for Cisco 5580 ASA firewall with access control to NAT and object grouping functions.
  • Upgraded F5 LTM/ASM 3600 to 4200 series and configured Cisco Switches and routers based upon client requirements .
  • Generated Certificate Signing Request (CSR) on the F5 LTM. Configured Virtual servers, pools and Load Balancing methods via command line and GUI as well.
  • Documented all the changes and the process of Migration
  • Using Load Balancer Cisco CSM and F5 LTM between server inside the server farm and in the DMZ.
  • Worked on ACL Cleanup project and Route Cleanup project to optimize core and edge network devices performance
  • Performed Route Filtering and Route Manipulation by applying distribute-lists, route-maps, administrative distance and offset-lists.
  • 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 .
  • Experience with converting WAN routing from EIGRP/OSPF to BGP (OSPF is used for local routing only) which also involved converting from Point to point circuits to MPLS circuits
  • Installation & configuration of Microsoft Proxy Server 2.0 & Blue Coat Proxy
  • Upgraded load balancers from Radware to F5 BigIPv9 which improved functionality and scalability in the enterprise. Managed the F5 BigIP GTM/LTM appliances to include writing iRules, SSL offload and everyday task of creating WIP and VIPs
  • Used network monitoring/management tools like Wireshark, SolarWinds for analyzing traffic to resolve network latency issues and optimizing network performance
  • Performing Deep Packet Analysis to see which specific user and applications are creating traffic and consuming network Bandwidth especially on Layer 2/3 in mixed vendor environment (Juniper ERX Routers and Cisco Catalyst 6000 series switches at distribution level)
  • Used internal network monitoring tools to ensure network connectivity and protocol analysis tools to assess the network issues causing service disruption.
  • Creating and updating technical Documentation for all network upgrades done. Attending meetings and technical discussion related to current project
  • Upgraded the software images of all Cisco network devices to include routers, switches and ASA firewalls
  • Adhered to weekly and monthly maintenance schedules to service network devices and associated equipment

Confidential, CA

Sr. Network Engineer

Environment: Cisco Routers, Cisco Switches, Nexus 7k/5k/2k, Routing protocols EIGRP, BGP, F5 Load Balancer, HSRP, VRRP, VPN, QOS, ASA firewall, Load balancer, VLANS, VTP, RSTP, ACL, NAT, Juniper SRX, Cisco Ace

Responsibilities:

  • Cisco IOS and Cisco CatOS configuration and backups, uploading and download IOS and CATOS using Xmodem, TFTP and FTP Protocols.
  • Involved in troubleshooting software, hardware and network problems
  • Worked on Layer 2 protocols such as STP, VTP, RSTP, PVSTP+, MST and other VLAN troubleshooting issues and configuring switches from scratch and deployment
  • Configuring all end ports as access ports using port fast and implementing BPDU guard
  • Hands on experience with Juniper EX-Series Ethernet Switches
  • Configuring and deployment of Juniper ERX310 router
  • Experience with working on juniper switches like EX2200, EX2500, QFX switch with Spanning tree.
  • Experience with the configuration of HSRP & STP protocols on Data center switches includes Catalyst 6509, 6504 series and Nexus 7004, 7009, 3064, 3048 switches
  • Design and configuring of OSPF, BGP on Juniper Routers (MX960) and SRX Firewalls(SRX240)
  • Install and support telecommunications infrastructure and its associated software, including Cisco Unified Communications Manager, Unity Connection, Contact Center Express, Cisco IM and Presence, Aura Voicemail and video conferencing systems.
  • Activities include: Tier 2 support and problem resolution, assistance with relocation and installation of voice communications equipment, voice facilities management, and any other basic issues pertaining to voice communications as they arise.
  • Configure, test, maintain, monitor, and troubleshoot end user communications hardware, telephony devices, and voice/data hardware products.
  • Perform moves/adds/changes (MACD) for phone and voicemail systems.
  • Involved in designing and implementing QOS and policy map to 2800 series routers for all the branches
  • Experience with Branch Relocation: Connect workstation, servers, etc. Rack and stack Pre-configured new hardware and connect the circuits
  • Performed IP address planning, designing, installation, configuration, testing, maintenance, and troubleshooting in complete LAN, WAN development
  • Supported EIGRP and BGP based on the network by resolving level 2 & 3 problems of internal teams & external customers of all locations
  • Experience with Racking, Stacking, configuring, Nexus 5K and 2K and 7K
  • Implementing 3750 Stackable switches using Cisco Stack Wise technology. Experience to review, evaluate current and future design issues as required maintaining network integrity, efficient data flow
  • Worked on ASA Firewall rule management as part of network operations to take care of Firewall ACL requests.
  • Researched, designed, and replaced aging Checkpoint Firewall architecture with new next generation Palo Alto appliances serving as Firewall and URL and application inspection
  • Network Security Assessment and implementation of security features such as network filtering, SSH, AAA, SNMP access lists, VTY access lists and HSRP authentication
  • Performed Packet capturing using Cisco NetFlow Analyzer and Riverbed to monitor traffic, application wise Bandwidth consumption and to monitor any malicious activity n the network
  • Creation of ACL policies for Cisco 5580 ASA firewall with access control to NAT and object grouping functions
  • Use Cisco Ace as server load Balancer to provide redundancy and control traffic to different server
  • Worked with application and system teams to investigate high availability requirements for an application to deploy an optimum Load Balancing mechanism and to provide network oriented support for end-to-end application life cycle management.
  • Documented solid migration plans for End of life Load balancers and ensured solid checkouts by reaching out to business units impacted by the change.
  • Successfully upgraded End of Life (EOL) Citrix Netscalers 9010 to 8005, 12000 to 11515, F5 LTMs 3400, 6800 to Citrix Netscaler 8005 and EOL Citrix GSLBs 7500, 9500 to 8005 without any severity 1/2 outages spanning 160 countries.
  • Installed new Citrix SDX 8015 and 11520 hardware to expand the Global load balancing capacity.
  • Installed the dedicated F5 LTM 5250 hardware for the Exchange 2016 environment.
  • Relocated several LTM, Net scalers and GSLB from One DC to other DC in internal and DMZ environments.
  • Troubleshot the incident tickets and provided the design assistance for local and global load balancing.
  • Consistently exceeded client expectations and interfaced closely with diverse support groups such as Deployment and Network Services Division, Data Center Production support, and the project office
  • . Hands on experience using Service now for changes like expansion of VIP subnets on the Private and external(DMZ) load balancers and other EOL upgrades
  • Performed Network Security Assessments and implemented security improvements such as network filtering, SSH, AAA, TACACS, SNMP access lists, VTY access lists, EIGRP MD5 authentication, HSRP authentication and security enhancements
  • Installed wireless access points (WAP) at various locations in the company
  • Involved in SNMP Network management and using Ethereal as packet sniffer
  • Generating RCA (Root Cause Analysis) for critical issues of layer1/layer2/layer3 problems

Confidential

Network Engineer

Responsibilities:

  • Design and configuring of OSPF, BGP on Juniper Routers (MX960) and SRX Firewalls(SRX240)
  • Implemented ISL and 802.1 Q for communicating through VTP
  • Performed IP address planning, designing, installation, configuration, testing, maintenance, and troubleshooting in complete LAN, WAN development
  • Experience working with High performance data center switch like nexus 7 K series
  • Experience working with Nexus 7010, 7018, 5020, 2148, 2248 devices
  • Migration of RIP V2 to OSPF, BGP Routing Protocols
  • Configured EIGRP for Lab Environment
  • Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500 with ACL, NAT, Object Groups, Failover, Multi-Contexts
  • Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256 with ASA Firewalls
  • Responsible for managing activities, Upgrading IOS -- Upgrading hardware and installing new devices, Tuning (Configuration), make standardization for the topology
  • Installation & configuration of Microsoft Proxy Server 2.0 & Blue Coat Proxy
  • Configured, installed, & managed DHCP, DNS, & WINS servers
  • Worked on network monitoring/management tools like PRGT, Net Flow, Cisco Prime, Solar Winds
  • Worked with Carrier to test and turn-up circuits
  • Installed wireless access points (WAP) at various locations in the company
  • Installing new modems and routers at customer end and managing node assigned by Team leader.
  • Diagnosing tickets given by team leader related to broadband connections like speed, internet & cabling issues.
  • Resolving tickets with coordination of colleagues in timely manner and reporting back to the team leader.
  • Installing and configuring NIC cards, networking systems and components for customer’s PC connecting customer’s PC to Wireless router.
  • Explaining services and equipment operation to customers and Promoting additional services available to customers and potential customers.
  • Assisting the Network Operation Center with trouble tickets which consist of down access level PC's in Datacenter Troubleshooting these issues with the process of the OSI model and Cisco IOS commands for configuring new VLANs.
  • Configured Cisco routers and switches.
  • Preparing network documentation of changes in network design and configuration (i.e. network changes and Visio diagrams).
  • Troubleshoot and document issues involving Windows desktops, laptops, LAN/WAN, routers, switches, printers and other hardware and software components.

Environment: Cisco 3750 switches and Cisco 3825 Routers, Juniper SRX 240, JUNOS, J-Series 4350 Routers, Checkpoint 12400, Palo Alto 5060, GAIA, RIP, OSPF, VPN

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