Gary A. Davis

EXECUTIVE SUMMARY

Over twenty-five (25) years of technical and analytical expertise in the IT industry, with emphasis on system/network administration. Background in supporting various IT infrastructures in the areas of Cisco network administration, UNIX system administration, software/hardware installation, software/hardware testing, documentation, and customer support. Directly responsible for assuring the integrity of large, multimillion-dollar TCP/IP systems and client/server based computer networks. Technically and functionally interact with customers and effectively maintain customer relationships.

Decipher and logically resolve technical issues while tactfully managing customers in a fast-paced environment. Utilize judgment and decision making to analyze problems and develop logical solutions. Take initiative to learn/apply new software and hardware technology. Acknowledged for professionalism, enthusiasm, versatility and outstanding organizational and leadership skills. Excellent oral and written communication skills.

EDUCATION

B.S., Computers and Network Security, University of MD College Park, MD, Expected 12/2018.

Cisco Certified Network Associate (CCNA), Cisco Systems, Since 07/2001.

Cisco Certified Network Professional Boot Camp (CCNP), Since 04/2004.

CCIE R&S Written Passed

CCIE R&S Certification Lab, Expected 7/2018

SUN Microsystems Systems Administration I for Solaris 8, 9, 10

SUN Microsystems Systems Advanced Administration II for Solaris 8, 9,10

Sun Microsystems Network Administration

Military Training:

Advanced Systems Configuration Manager School – Honor Graduate, 1994.

Training Courses:

Cisco: CCNA, CCNP, CCIE, ASA(Firewall), DMVPN, QoS, CUCM(VOICE),

F5: Big IP LTM

Sun: Solaris 8,9,10 System Administration I, Solaris 8, 9, 10 Advanced System Administration II, UNIX Shell Scripting, Python

Bluecoat: Wan Optimization

Computer Associates: Active Directory, Access Control 8.0

JSI Telecom: VoiceBox Basic System Administration, VoiceBox Advanced System

TECHNICAL SKILLS

Platform/Operating System: Sun Solaris 10, 9, 8, 7; Red Hat Linux 6.2, 7.2, 9.0; Irix 6.5; HP/AIX 11.x; Windows 3.x, 95, 98, NT; IBM PC-LAN/DOS; VAX/VMS; and IBM/MVS.

Hardware/Storage: Sun Servers, Sun Workstations Sun Storage Array,

Cisco Nexus, Cisco Routers, Cisco Switches, Cisco ASA Firewalls, Palo Alto Firewalls, Cisco Wireless, Aruba Wireless KG-175 TACLANE, T3 Storage Array, Plasmon Jukebox, HP, Brocade, Juniper, F5 Big IP, Cisco CUCM, Unity, UCCX.

Application Software: Veritas Volume Manager, and Sun Volume Manager, Veritas Cluster Server, HP Openview, CiscoWorks, NIS+, NFS, and FTP, DNS, Weblogic, Websphere.

Scripting Languages: Bsh, Csh, Ksh, Sed/Awk, Nawk, Python

Database Products: Sybase, Oracle, SQL and Microsoft Access, Visio.

PROFESSIONAL EXPERIENCE

Senior Network Engineer, Presidio, 8/17 – Present

Responsible for the design, implementation and maintenance of the Tiffany & Co network over a short term project.

Successfully configured and implemented DMVPN (Phase 2/3) connectivity to over 1000+ Tiffany & Co sites utilizing Cisco ASR routers.

Configured Virtual Routing Forwarding (VRF-Lite) on the Cisco routers allowing different routes for a group of interfaces.

Coordinated and lead the successful Tiffany & Co IOS upgrade of over 5000+ Cisco Routers and Switches utilizing Cisco Prime.

Configured firewall rules for the successful connectivity of Tiffany & Co clients across both Palo Alto and Cisco ASA firewalls.

Developed Standard Operating Procedures (SOP) providing step-by-step details of the Tiffany & Co network Cisco IOS upgrade.

Drafted Tiffany & Co network design guide detailing the implementation of the DMVPN network connectivity including HLD/LLD documentation.

Responsible for design and implementation of several client sites to include upgrade and equipment refresh projects.

Senior Network Engineer, New York University, 8/14 – 8/17

Responsible for the design, implementation and maintenance of the New York University network which contain over 35,000 network devices.

Upgraded CORE network from Cisco 6509’s to Nexus 9500’s.

Upgraded Aggregation and access switch environment to Nexus 9300’s and Cisco 4500’s.

Successfully configured and installed Cisco 3650 switches.

Coordinated and lead the successful migration of Stern Business School onto the NYU Global network.

Implemented vlan translation/mapping, a service provider data center technology, to successfully migrate the Stern Business School datacenter to NYU Global network.

Migrated the Stern Business School wireless onto the NYU Global network wireless.

Provided both high–level (HLD) and Low-level (LLD) designs which outlined the network flow and configuration of both the Stern current and migrated network

Configured VRF’s, VDC’s, peer-links and keep-alive links on the Nexus 9000 series switch

Configured DMVPN (Phase 2/3) to allow secure network traffic to the remote site.

Responsible for the IOS upgrading of all Cisco equipment to include routers, switches, wireless controllers and ASA firewalls as part of the equipment refresh project.

Configured security contexts on the Cisco 5500 ASA firewalls within an active/active failover configuration.

Utilize Solarwinds network monitoring tool for proactive warning of any issues with network nodes.

Provided direction to network administrators in the configuration and implementation of network migration project.

Configure and support MPLS-VPN (CE/PE), VRF, and MPLS ICI peering

Configure L3 protocols (IP, BGP, OSPF, EIGRP, IGRP, RIP, ISIS, HSRP), redistribution, summarization, Filtration (using distribute list, route map, prefix list, access list)

Daily tasks include resolving change management request tickets.

Senior Network Engineer, Noridian Healthcare Solutions, 8/13 – 8/14

Responsible for the design, implementation and maintenance of the Maryland Affordable Healthcare Act network.

Documented design via Microsoft Visio which depicted network flow and overview.

Installed and configured Cisco 5500 wireless controller and Cisco Aironet 3600 Access Points (AP) providing wireless network connectivity.

Configured HSRP failover capability on Cisco ASR 1000 series router implementing high availability.

Configured multi-homing on the Cisco ASR 1000 series routers to allow for uninterrupted internet connectivity in the event of an ISP failure.

Configured Cisco 6500 Core Switches with HSRP failover capability resulting in minimal to no downtime in the event of equipment failure.

Configured Site-to-Site VPN tunnels to allow network and wireless connectivity to the remote users.

Responsible for the upgrading of all Cisco equipment to include routers, switches, wireless controllers and ASA firewalls.

Assisted in the re-design of the current network infrastructure to the Nexus series switches for Core, Distribution and Access layer.

Configured MP-BGP on Cisco Router enabling the routing of both IPv4/IPv6 traffic.

Configured VLAN’s to easily administer and separating departmental network traffic.

Configured DHCP to allow for address assignment for network equipment and associated devices.

Configured Cisco 5500 ASA firewalls within an active/active failover configuration.

Configured Palo Alto PA-5020 firewalls for Panos-HA Active/Active cluster.

Configured clientless SSL VPN on the Cisco ASA 5500 firewall implementing rules, profiles and group policies.

Upgraded CORE network from Cisco 6509’s to Nexus 7000’s, Cisco 4500’s to Nexus 5000/2000.

Lead Network Engineer, INTEGREON, 3/09 – 7/13

Responsible for the design, implementation and maintenance of an integrated legal research and business support company network.

Configure Call manager and Cisco Unity enabling voip access to 1000+ users company wide.

Configured voice gateway routers to allow VOIP communications.

Configured Session Initiation Protocol (SIP) to allow for both voice and video.

Configured QoS policies to ensure voice traffic was priority.

Installed and configured Cisco 7940 and 7960 VOIP phones utilizing the Cisco Call Manager utility.

Installed and configured Cisco 2500/5500/7500 wireless controller and Cisco Aironet 1040,1140,3600 Access Points (AP) providing wireless network connectivity.

Configured and installed Aruba 3000/6000 wireless controller and Aruba 100/130 series Access Points.

Configured Cisco routers with HSRP failover capability to accommodate redundancy limiting the amount of downtime within the datacenter.

Implemented the Cisco Nexus switches within the infrastructure running parallel to replace the current enterprise environment.

Configured Cisco 6500 Core Switches with HSRP failover capability resulting in minimal to no downtime in the event of equipment failure.

Configured multi-link point-to-point (MLPPP) circuits to provide larger bandwidth for remote site customers.

Configured newly acquired remote sites routers with BGP allowing connectivity for customers to the network.

Configured VPN tunnels routing EIGRP routes to allow network and wireless connectivity to the CORE HUB.

Upgraded the Cisco Wireless IOS on the Wireless Service Module (WiSM2) located on the Cisco 6509 CORE Switch.

Configured and installed Nexus 7000/5000/2000 series switches as Core, Distribution and Access layer switches.

Configured MPLS on Cisco Router enabling the routing of voice traffic from remote offices back to the central office.

Configured VLAN’s to easily administer and separate network traffic for the various internal departments of the company.

Configured DHCP to allow for address assignment for network equipment and associated devices.

Created subnets to allow for both present and future network expansion and addressing for both IPv4 and IPv6 network devices.

Installed and configured Cisco 5500 ASA firewalls within an active/active failover configuration resulting in minimal to no interruption in the event of failure.

Configured clientless SSL VPN on the Cisco ASA 5500 firewall implementing rules to allow/deny specific access.

Installed and configured RSA 250 appliance providing two-factor authentication along with the Cisco ASA 5500 firewall.

Configured smart-tunneling on the Cisco ASA 5500 to allow clientless SSL VPN (WebVPN) based client’s access to TCP based applications.

Configured routing protocols EIGRP, OSPF and BGP routing on Cisco 1800, 2600, 3800 & 7200 series routers.

Configured route maps and ACL’s to allow for screening and re-distribution of network traffic.

Configured Site-to-Site and Remote Access VPN’s allowing for encrypted highly secure remote connectivity for both voice and data traffic.

Configured Network Access Translation (NAT) rules on the Cisco ASA 5500 appliance in routed mode for egress traffic.

Configured etherchannels on Cisco 6500 series switch with LACP allowing the formulation of a single logical channel.

Installed and configured Cisco Secure ACS (TACACS+) server for network device authentication by users.

Installed SSL VPN licenses on the Cisco 5500 ASA redundant pair enabling numerous SSL VPN clients to access the network.

Installed RSA soft/hard token licenses on the RSA 250 appliance enabling two-factor authentication for numerous users.

Installed and configured virtual load balancers for both web and proxy servers in DR mode to address and eliminate ARP issues.

Upgraded the software images of all Cisco network devices to include routers, switches and ASA firewalls.

Prepared and maintained SOP’s and technical documentation and network diagrams.

Adhered to weekly and monthly maintenance schedules to service network devices and associated equipment.

Lead Systems Engineer, Intermedia Group, 3/09 – 3/11

Lead engineer responsible for the installation, configuration, administration and design of a CISCO/SUN/Windows TCP/IP based networked environment.

Responsible for the design, implementation and testing of a satellite prototype network incorporating failover scenarios, redundancy, IPv4/IPv6 dual-stack and intrusion detection (IDS).

Configured MPLS on Cisco 3600 series routers to simulate ISP provider within a test lab prototype network environment.

Designed and tested IPv6 to IPv4 conversion via MPLS ISP cloud within a test lab environment

prior to implementation.

Configured MPLS on current routers configuration and inserted new routing configuration for implementation into the MPLS cloud routing scheme.

Configured both GRE and IPSEC tunnels as a failover within the IPv6 to IPv4 conversion test lab environment.

Configured Cisco routers with HSRP failover capability to accommodate redundancy limiting the amount of downtime within the datacenter.

Configured Cisco Service Control Engine (SCE) to provide network deep packet inspection (DPI).

Created system design and network architecture diagrams providing Layer 2 & Layer 3 view of the network.

Configured IPv6 routing within BGP incorporating address-family to effectively route both IPv6 and IPv4 networks.

Configured Fortinet Firewall parameters setting up BGP, Virtual Domains, Protocols and Policies

effectively providing network security and intrusion detection.

Configured Juniper SSG series firewall adding polices, intrusion detection, High Availability(HA) and VPN configurations.

Configured ServerIronXL Firewall Load Balancer (FWLB) with failover.

Configured F5 Big IP load balancer redundancy implementing active/passive mode for device failover, configuring controllers for both public and private ip addressing, employing SNAT for internal addressing security.

Attended weekly meetings with government customer to provide project briefings.

Implemented IPv6 addressing scheme throughout network test environment utilizing RA for dynamic address assignments.

Configured routing protocols EIGRP, OSPF and BGP routing on Cisco 1800, 2600, 3800 & 7200 series routers.

Configured and installed Cisco 6506 with Transport Lan Service (TLS), provided by Verizon, to upgrade the current frame-relay infrastructure.

Configured and installed Cisco 3845 router for frame-relay routing with two PVC sub-interfaces for redundancy

Implemented and managed QoS providing packet priority by defining traffic through class and policy maps.

Configured Alcatel 6000 series and Extreme 450E switches as Core and Access layer switches within an enterprise configured network.

Ensured Information Assurance Vulnerability Alerts (IAVA’s) were adhered to by implementing the essential patches for IAVA compliance.

Hired as the Subject Matter Expert (SME) to engineer the successful transfer of over 300+ applications from the current SCIF to a newly constructed datacenter for the Dept of Homeland Security.

Configured the Cisco ASA 5510 for VPN/firewall enhancing network security via authentication and acess-lists/rules.

Configured Juniper Netscreen adding and administering policies for authentication and IDS prevention.

Configured F5 Big IP for web server load balancing providing uninterrupted load balancing and failover capabilities.

Configured and administer network routing protocols BGP, EIGRP, OSPF, TLS over a multicast traffic TCP/IP network.

Configured and installed the Cisco WRT54G wireless-G broadband router to allow controlled wireless access to internal employees.

Configured and installed Cisco phones on the network via Cisco PoE switches administered via Cisco Call Manager.

Configured and installed Bluecoat packeteer wan optimization and web filtering tool to provide efficient bandwidth performance and prevent malware threats.

Provided a detailed stenciled diagram of the current network displaying rack and associated equipment per rack.

Configured and administered the TACACS server for both user and network node authentication.

Utilize Solarwinds network monitoring tool for proactive warning of any issues with network nodes.

Senior Systems Engineer, General Dynamics, Baghdad IRAQ, 1/07 – 3/09

Set up Router VPN tunnels to allow encrypted traffic to flow across the CENTRIXS systems utilizing SIPR tunnels being routed to remote via KG-175 Taclane.

Set up BGP, EIGRP and OSPF routing on Cisco 2600, 3800 & 7200 series routers.

Performed network traffic analysis i.e ip sniffer applications, Cisco NAPA application performance monitoring tool with alerts to detect application performance issues.

Configured HSRP on Cisco routers setting the standby ip, preempt and priority to provide failover capability.

Installed and configured Cisco 2950, 3550, 3560 and 3750 switches for data and voice VLAN on both SIPR (secure) and NIPR (non-secure).

Set up etherchannels on Cisco 6509 Core Switch enabling multiple port traffic to flow through a single channel thereby reserving bandwidth.

Successfully migrated a tactical network consisting of multiple trunked switches allowing a single point of failure to a redundant fiber ring consisting of two Cisco 6509 MCN’s, 6 Cisco 6509 ADN’s’ and numerous independent EUB’s comprising Cisco 3560 and 3750 switches.

Set up OSPF routing protocol for both internal and external router to router connectivity establishing communication within the local site and between remote sites.

Configured Hot Standby Routing Protocol (HSRP) to provide network redundancy and failover capability to Cisco gateway routers.

Performed the IOS upgrade of over 600 switches which encompassed the NIPR and SIPR network.

Installed and configured over 1000 Cisco 7940 and 7960 VOIP phones utilizing the Cisco Call Manager utility.

Configured Quality of Service (QoS) on Cisco routers providing VOIP priority.

Resolve tickets issued through the Remedy Change Management Request system used to fix system anomalies and perform upgrades

TECHNICAL MANUALS

Standard Operating Procedures Users Manuals

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