David R. Email & Phone Number

Chicago, Illinois, United States

Migration of cloud applications from GE Corporate owned assets to GE Healthcare assets. The assets included virtual machines and physical hardware. The cloud providers included Amazon Web Services (AWS), Microsoft Azure, and GE/GEHC private clouds. Team calls and meetings were arranged with application owners to have their assets transferred in a timely manner before an October 2024 deadline. I was assigned related networking and security duties including firewall rule(s) creation for data transfers, Infoblox DDI requests, and consulting on any questions raised by GE/GEHC personnel. I worked with a team consisting of project managers, application managers, network engineers, security engineers, and remote office staff. Meetings topics included knowledge transfers, resolving tickets, and timing schedules. Meetings were hosted by GE Corporate and GE Healthcare. ServiceNow was used for ticketing to allow for asset transfers.

Cambridge, Massachusetts, United States

Deployment of Palo Alto Networks (PANW) Prisma Access to allow GE Vernova remote offices to be connected to each other using Prisma Access. The site networking was transitioned from GE managed SD-WAN over to Prisma Access. I worked with a team consisting of a network architect, project managers, network engineers, security engineers, and remote office staff. Meetings topics included knowledge transfers, site plans, and timing schedules. Meetings were hosted by GE Vernova and PANW. ServiceNow was used for ticketing to allow for site work approvals. The remote offices had physical security hardware (cameras and badge readers) that had to be reachable using Prisma Access. I documented the networking tasks to perform with descriptive text and pictures.

Santa Clara, California, United States

Monitoring of the PANW Prisma Access remote access cloud business service for conditions that affected a customer’s usage and experience when using the service. This includes up and down conditions of network tunnels and BGP connections and virtual machine (VM) components (CPU, IP pool allocations). We supported the public side of multiple customer hybrid cloud infrastructures. The Prisma Access service allows businesses to connect their mobile users and office locations over a cloud based connection. Prisma Access components include ZTNA, SD-WAN, SWG, CASB, ADEM, and GlobalProtect.The team I’m assigned to is called Global Customer Services Network Operations Center. Team members include a North American director, two managers from America and Europe, and support personnel for 24/7 support. Position roles for the team members include development, data analysis, and general Prisma Access support.Support tools and software include Cortex XSOAR (security automation and trouble ticketing); SecureCRT SSH based access to VM nodes (service connection, remote network, mobile user gateway) via a jumpbox proxy; Grafana and AIOps for NGFW for graphing and data visualization; Tableau for display of customer information; Atlassian Jira for trouble tickets used by Service Reliability Engineering (SRE) personnel; Atlassian Confluence for internal documentation; and Jenkins for automated execution of scripts to reboot nodes, restart processes, and generate technical support files for Technical Assistance Center (TAC) remediation.If any Prisma Access component was found to have an issue (CPU, IP address exhaustion, tunnel down, BGP state not Established), reactive or proactive remediation steps included data analysis; picture and text evidence generation and collection; recommendation of IP address expansion and horizontal or vertical scaling; and an email sent to Customer Success who in turn would contact the customer to take needed actions.

San Antonio, Tx

Provided network and security support to the Veteran’s Administration network.I was assigned to a group called Trusted Internet Connection responsible for the internal and external connectivity of the VA network. We supported the private side of a hybrid cloud infrastructure.Equipment I worked with included Cisco Firepower Threat Defense, Cisco ASA firewalls, Cisco Nexus routers/switches, Cisco ASDM firewall administration software, Cisco Identity Services Engine, Cisco ASA, Cisco AnyConnect VPN software, Citrix Application Delivery Controller load balancing, Lantronix console manager, Venafi certificate management, ArcanaNetworks ManageExpress Virtual Office (MEVO) for Cisco Virtual Office (CVO) based routers, Wireshark, and Splunk for remote logging.The TIC team I was on consisted of a team lead, my immediate team members that worked on the previously listed equipment, and other members responsible for F5 load balancing, WAN routing, Palo Alto firewalls, etc.I worked remotely from my local residence. My team was based out of Martinsburg, VA and Hines, IL.We had daily meetings that dealt with ServiceNow tickets, user VPN access issues, networking, and security.I made physical visits as needed to a local data center to install/move equipment, plug in cables, perform equipment inventories, and decommission end of life equipment.General software used included the Microsoft Office, Visio, and OneNote for internal documentation.

Dallas County, Texas, United States

Provided daily support on incidents, problems, tasks and changes in support of KPMG networking and security, including interfacing with customers. We supported the private side of a hybrid cloud infrastructure.Provided ongoing maintenance for network hardware/software, appliances and vendor coordination.Modified the configurations of Cisco and Palo Alto hardware as needed. The configurations were backed up nightly automatically in Solarwinds.The vendor hardware and software used at KPMG was designed to especially support the delivery of tax related applications using server hosted virtual machines with F5 load balancers distributing incoming information requests.Vendor hardware/software supported includes Palo Alto (entry and maintenance of firewall rules into Panorama), Cisco (entry and maintenance of Cisco ASA series 5500 firewall rules into Cisco Security Manager, router/switch troubleshooting), Infoblox (entry and maintenance of DNS/DHCP/IPAM rules), F5 (entry and maintenance of load balancing and iRules statements), Solarwinds (network monitoring), Splunk (system logging), and Service Now (entries and maintenance of trouble ticketing and CMDB database).Training was provided at the downtown Dallas KPMG office.

Irving, Texas, United States

Troubleshooting, break/fix, and issue remediation of Orange County, CA government computer networks.Issue types include incidents, tasks, and change requests. Issues had to be solved in a timely manner within Service Level Agreement guidelines.Cisco router/switch programming for a VoIP circuit migration project. The equipment was moved from a Dallas data center to an Irving data center. The VoIP circuits served voice traffic for Orange County, CA.Job tools and programs include SevOne (top talkers and flow falcon reports), ServiceNow (trouble ticketing and configuration management database (CMDB)), Putty (remote CLI device access), Microsoft (Word, Excel, Outlook, Skype). The Orange County network is Cisco router and switch based across multiple agencies and locations.Daily group Skype meetings discussed ongoing Orange County network issues.On call work had to be performed during the day or night as needed. Network engineers were placed as primary or secondary on call from a schedule.Environment: Cisco multilayer switches and routers.

Plano, Tx

Configuration of Cisco routers and switches for a computer security project.Inputting of Simple Network Management Protocol (SNMP) statements into Cisco switches and wireless LAN controllers.Inputting of IP helper address statements into Cisco routers.Integration of Cisco routers and switches with network access control (NAC) products from Forescout Technologies.Checking of device availability with Solarwinds network monitoring software. Site locations were categorized by type (headquarters, data center, product production), location (USA, Mexico), and importance (gold, silver, bronze).Environment: Cisco multilayer switches and routers.

Farmers Branch, Tx

I was the sole networking and data subject matter expert (SME) on this AT&T project team.Programming of Cisco 3750 and 3560 Power Over Ethernet (POE) multilayer switches for office, lab, and venue use.Programming of the product support lab's Cisco ME3400 switch to act more like an ordinary Cisco switch.Production of Visio drawings for the lab and external venues that show how Cisco switches are connected to Linux based testing hardware (EchoBOT) and the Cisco 2941 SIAD router.Conversion of all venues from VLAN 1 to VLAN 98.Programming of the Dantel DSS01 switch for VLAN 98 and EchoBOT/switch connectivity for usage in the lab and venues.Writing of method operation procedure (MOP) documents as needed to demonstrate how proposed equipment changes were to be performed.Construction of shelving and a rack for the office EchoBOT networks.Programming of two Cisco 3560 switches for the office EchoBOT networks. One switch had to be programmed with BPDU filter to ignore incoming BPDUs from an unknown source in AT&T's network.Working on EchoBOT connectivity issues with the team as needed for the lab and venues.Backup of all Cisco switch config files and Visio drawings to the internal Microsoft Sharepoint document management system.Implementation of new passphrase changes on all switches to improve security.Oversee the installation of any new Cisco or Dantel switch equipment at venues and checking for network connectivity.Research on proposed equipment for possible usage in AT&T's network.Working with internal AT&T staff for documenting the IP addresses used at venues.Shipping of venue equipment as needed.Environment: Cisco Power Over Ethernet (POE) multilayer switches (3750 and 3560 models), Dantel DSS01 Power Over Ethernet (POE) multilayer switch.

Bedminster, Nj

Received training for a cell phone project involving transitioning their business customers from 3G to 4G.We were to have regular customer phone meetings, assess their technical needs, assess Cisco router configuration files for accuracy, and move APN names between databases during maintenance windows.I was one of 25 network engineers working remotely. The team was furloughed due to lack of funding.This job was stated as possibly resuming in January 2014, but no confirmed date had been reached.Environment: Dell business laptops

Plano, Tx

Generated and verified cell site router scripts and spreadsheets for a Sprint cell phone project.Cell site IP address and VLAN information is contained in a database and Excel is used for checking generated spreadsheets.Cell site router hardware includes the Ericsson SP210 and SP310.Cell site network configurations include ring and hub/spoke.Cell site WAN connections include microwave, fiber optic, and bonded T1 lines.Environment: Excel, Dell business laptops and docking stations.

Richardson, Tx

Tier 2 technical support of Tomkins’ networking infrastructure.Performed an inventory of their remote site’s Cisco routers and switches. Information collected included configuration files, interface types, and connections to other Cisco equipment.Utilized Ciscoworks 4.1 to store a list of router and switch IP addresses for the purposes of a mass password change.Configured and shipped Cisco routers to their remote sites.Environment: Cisco routers (3900, 2900, 2800 series models), Cisco switches (3700, 3500, and 2900 series models)

Allen, Tx

Remote networking, troubleshooting, and upgrading support of AT&T retail cell phone stores for new routers, switches, and wireless access points.I work from home and support the field technicians that visit each store an hour before they open for the day.Each store has multiple T1 lines bonded together and multiple connections to AT&T’s BGP cloud using virtual routing and forwarding (VRF).Each router or switch gets upgraded to a newer Cisco or Brocade Foundry model.I was provided with a computer for MDSI email and an AT&T laptop for the networking support.Initial training was provided during support calls and at AT&T’s data center in Allen, TX.The position was obtained through Management Data Systems International, Tampa, FL.Environment: Cisco routers (2911, 2821, and 2811 models), Cicso switches (3560 and 2950 models), Belair wireless access points.

I'm one of the first five people hired to be the initial members of a team that troubleshoots and supports the upgrade of T-Mobile's cell phone network from 2G to HSPA+ 4G.T-Mobile's network covers four US regions and major cities within each region.The portion of their cell phone network design that we're responsible for consists of equipment including pairs of Cisco 7609 multilayer switches, network interface devices (NID) manufactured by Accedian Networks, and NID provisioning software from JDS Uniphase (JDSU).Each individual cell site has its own VLAN and all sites are managed from one VLAN.Cisco's Hot Standby Router Protocol (HSRP version 2) is used to hold the Active state for the odd numbered VLANs on the first Cisco 7609 multilayer switch and hold the Active state for the even numbered VLANs on the second Cisco 7609 multilayer switch.This was a contract job through Teksystems. The contract was completed on November 28, 2010 due to budget cutbacks at T-Mobile.Each pair of Cisco 7609 multilayer switches is in the access layer of a traditional core / distribution / access layer network design.T-Mobile's network clouds include the individual cell sites and regional mobile switching centers where switch technicians work.In between these two T-Mobile clouds is a cloud that belongs to a Metro Ethernet vendor (AT&T, Verizon, Time Warner, etc.) that serves that particular major US city.Each Metro Ethernet vendor has equipment (routers or cell site switches) that allows our two clouds to connect with their cloud.Each JDSU NID has to be provisioned and troubleshot by us if the provisioning didn’t work.We make and/or receive troubleshooting calls to and/or from field technicians, switch technicians, Metro Ethernet vendors, and project managers.The environment in which we work is a 24/7 network operation call center (NOC) that consists of Windows XP and Sun Solaris workstations, three position adjustable LCD monitors, and an Avaya phone.

Configuration of Cisco 4948 multilayer switch for network connectivity of cable television hardware. Router programming included the OSPF routing protocol to interface with non-Cisco customer owned equipment, VLANs, static/default routes, and IP address assignment.Upgraded or installed Cisco routers and switches, Sun Solaris computers, and video distribution equipment in customer's cable television head end buildings.Received six weeks of training at Cisco's Lawrenceville, GA campus in cable television, radio frequency, and routing and switching topics.Traveled as needed alone or with a lead engineer to US cities. Navigation to customer locations performed using a Garmin GPS.This was a contract job through CorTech, an Atlanta, GA contract agency. Assignment was to the Scientific Atlanta / SciCare Services division of Cisco. The contract was completed on July 17, 2009 due to staff layoffs at Cisco.Participation in conference calls with the customer and Cisco to assess the customer's needs and requirements before traveling to customer's site.Assigned a Dell laptop to document the work performed, log into customer's routers, and to contact Cisco through a VPN. Project notes, issues, and status reports were logged in a trouble ticketing system. Environment: Cisco multilayer switches (4948 model), Sun Solaris servers, QAM, QPSK, set top boxes, DNS, BOOTP, Unix, TCP/IP, Ethernet, Garmin GPS, Microsoft Office

Testing of phones (IP phones, software phones) for compatibility with Verizon's Advantage business telephony network. Test steps were pulled from a database.Documenting of test conditions, expectations, and results in HP Quality Center or Excel.Configuration and programming of Cisco PIX 500 firewalls, 3825 routers, Catalyst 3560 POE switches, and Cisco IOS 12 to meet test conditions.This was a contract job through Teksystems. The contract was completed on December 31, 2007 due to layoffs at Verizon affecting 10% of the staff.Troubleshooting and packet captures of TCP/IP were performed by Wireshark.Building, maintenance, and administration of two Linux servers used in the lab environment to distribute phone configuration files via Apache and SSL, provide a local Bind DNS service for testing DNS failover, and log debug reports from phones using Syslog.Interfacing with visiting vendor representatives to obtain technical information needed to complete telephony testing. Environment: Cisco, Polycom, Aastra, Uniden, Mediatrix, Redhat (Centos) Linux, DNS, DHCP, TCP/IP, VoIP, Ethernet, fiber optic, Power Over Ethernet switches, Microsoft Office