Dan Nguyen

Experience

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  HEWLETT-PACKARD / Volt

  Apr 2000 - May 2003

  Lead Operations Technician at Hewlett-Packard
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  HEWLETT-PACKARD / SPHERION / MBS Systems

  May 2003 - Nov 2013

  Database Administrator & Applications Support Engineer at Hewlett-Packard
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  Managed Business Solutions

  Sept 2011 - Mar 2013

  ASP.NET Web Developer for MBShome.com
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  QTS Data Centers

  Feb 2014 - now

  Cloud Network Engineer

  Support Internet Service Clients on Cisco Nexus 7K (client distribution) and ASR9000 (core uplink to transit) platforms: • Resolve problems related to sub-optimal routing or routing loops, packet loss, latency, loss of connectivity, HSRP & VRRP redundancy • Troubleshooting BGP customer's sessions & ensuring routes to upstream providers are advertised and correct routes are being received • Migrate customers from Catalyst 6509 (legacy client distribution) to Nexus 7K platform Provisioning Colocation client's Internet circuits • Other circuits supported are Data Center Connects for clients with a presence at multiple QTS locations and Fiber Metro Connects utilizing DWDM managed through Cisco Transport ControllerSupport Network Segmentation of Internal Facility and Security Networks on Catalyst 3560 - 3750 platforms: • Configuring switchports and assigning to VLANs as well as private VLANs • Troubleshooting Layer 2 problems and verifying Spanning Tree is forwarding out correct portsSupport Clients on Cisco Platform Firewalls: ASA 55xx series and FWSMs • Add/Move/Changes for managed client's ACLs • Inspecting ACE load balancer Server Farms and Health Probes • Verifying Site-to-Site VPN tunnel status and troubleshooting when tunnels go down • Add/Remove Client-to-Site Remote Access VPN accounts • Establishing routes for MPLS & GRE tunnels • Using packet capture & analysis to identify interesting traffic and where it stops routing if there is a problem Accountable for daily DNS requests: • Network assignment via Proteus for client's reverse zones & PTR records • Forward zone creation with DNS resource records (A, MX, TXT, CNAME, etc.) as well as domain slavingWindows Server Virtualization: • Limited support for managed virtual customers in VMware infrastructure and non-managed customers using vCloud Director • Expand hard disk space, memory and CPU • Troubleshoot system network connectivity issues and server crashes Show less