Experience

Vietnamese Dubbing Services

• Vietnam
• Motor Vehicle Manufacturing
• 1 - 100 Employee

• Sr. Network Engineer

  • Apr 2017 - Present

  • Troubleshooting different system issues that emerge every day, for example, Network Latency, Outages as a major aspect of my everyday work. • Maintained a network lab with more than 30 routers (3600 series), 50+ switches (2900 series), firewall and other network devices like DHCP, DNS servers and VPN concentrators. • Helped the network team to install new switches and routers and configure the IOS according to the requirement which included VLAN, OSPF, Sub netting, EIGRP, BGP, VTP, PaGP, spanning–tree, IP Sub netting, wireless access points, T1 circuits and PIM-SM using auto RP. • Working with different teams to gather info for the new request and troubleshoot for any connectivity issues by capturing traffic using TCPDUMP and smart view tracker. • Assisted in backing up, re-establishing and upgrading the Router and Switch IOS.. • Configure and change the examination approaches on Firewall to permit legacy application activity. • Troubleshooting network issues through Blue coat too composing and altering web strategies. • Involved in Switching Technology Administration including creating and managing VLANs, Port security, Trunking, STP, Inter VLAN routing and LAN security. • Configured and designed LAN networks with Access layer switches such as Cisco 4510, 4948, 4507 switches. • Experience working Juniper T-Series, M-Series, MX-Series, J-Series Routers. • Implementation of DHCP, DNS, FTP, Cisco catalyst switches, VLANs, STP, Ipv4, Subnetting, IPv6, Network • Implementing, configuring and troubleshooting routing protocols such as RIPv2 HSRP, GLBP. • Perform network analysis using various tools like Wireshark and Solarwinds. • Experience in designing and assisting in deploying enterprise wide Network SSL Security and High Availability Solutions for ASA. Environment: Cisco 3600/6500/7500/7200 routers, Cisco 4510/4948/4507 switches, STP, DNS, VPN, HSRP, GLBP, Wireshark, Load balancing, Cisco ACI, Cisco ASA, EIGRP, LAN, WAN and Juniper routers. Show less



The Huntington Bank

• Information Technology & Services
• 1 - 100 Employee

• Sr Network Engineer

  • Oct 2014 - Mar 2017

  • Installation and Configuration of Cisco Catalyst switches 6500, 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design Document and followed the change process as per IT policy It also includes the configuration of port channel between core switches and server distribution switches. • Experience with moving data center from one location to another location, from 6500 based data center to Nexus based data center. • Configured BPDU Guard, port-fast, uplink fast and other spanning tree features. • Administration and diagnostics of LAN and WAN with in-depth knowledge of TCP/IP, NAT, PPP, ISDN and associates network protocols and services. • Experience in migration of Frame-relay based branches to MPLS based technology using multilayer stackable switch like 6500 series and 2800 series router. • Configuring IPSLA monitor to track the different IP route when disaster occurs. • Provide on-site repair, maintenance and upgrade services for HP press. • Designed and Implemented Virtual Server Farm for Web site load balancing with F5 Networks Load Balancer in DMZ architecture. • Troubleshooting network issues through Blue coat as well as composing and altering web strategies. • Monitoring threats on firewall and changing policies to prevent attack. • Responsible for recreating system operations with the utilization of packet analyzer like Wireshark, and use to determine tickets at whatever point there is an issue. • Experience working with Nexus 7010, 5020, 2148, 2248 switches. • Performed route redistribution and manipulated route updates using distribute lists, route-maps and administrative distance, offset-lists. • Generating RCA (Root Cause Analysis) for basic issues of layer1/layer2/layer3 issues. Environment: DMZ, RCA, MPLS, Nexus switches, IPSLA, TCP/IP, NAT, PPP, ISDN, MS Visio, Cisco 6500/3750/3550 switches, Spanning Tree Protocols, BPDU Guard and Cisco 6500/2800 routers. Show less



T-Mobile

• United States
• Telecommunications
• 700 & Above Employee

• Network Security Engineer

  • Jun 2013 - Sep 2014

  • Configuring Cisco ASA firewalls in Single and Multiple Context Mode firewalls. • Troubleshoot User connectivity issues on Checkpoint and Cisco ASA using CLI utilities. • Upgrade of Cisco ASA Firewall in Active/Standby mode with no down time. • Physical cabling, IP addressing, Wide Area Network configurations (Frame-relay). • Configured Firewall logging, DMZs and related security policies and monitoring. • Configured Cisco 7200, 7600, 3800 and 3600 routers. • Link state protocols such as OSPF are configured and also had experience in troubleshooting them. • Used Spanning Tree Protocol and also configured BPDU Guard, Port-Fast, and Up-Link Fast. • Performed installation and configuration Cisco Secure Access Control Server (ACS) configuration for AAA (RADIUS) authentication. • Experience with Monitoring remote systems and performing site reviews. • Experience with upgrading troubleshooting network outages and also upgrading IOS. • Hands on experience with implementing and maintaining network monitoring systems such as Cisco works and HP Open view and have experience with developing complex network design documentation and presentations using VISIO. • Implemented various EX, SRX and J Series Juniper, MX devices. • Configuring and implementing F5 BIG-IP, LTM, GTM load balancers to maintain global and local traffic. • Configured HSRP and VLAN trucking 802.1Q, VLAN Routing on Catalyst 6500 switches. • Work on Checkpoint Platform including Provider Smart Domain Manager. Worked on configuring, managing and supporting Checkpoint Gateways. • Access Point refresh and implementation at various sized branches and locations. • Handling Break/Fix situations, monitor, configure, policy creation on Checkpoint's Smart Center Server running on Secure Platform. Environment: LAN, WAN, F5 load balancer, OSPF, EIGRP, RIPV2, BGP, Cisco 7200/7600/3800/3600 routers, HSRP, NAT, Cisco 6500 series switches, AAA, MS Visio, LTM, GTM and Juniper devices. Show less



Polaris

• United States
• Software Development
• 200 - 300 Employee

• Jr. Network Engineer

  • Dec 2011 - Jun 2013

  • Implementation of OSPF and BGP on Juniper routers. • Maintained and installed new internet connections for customers. • Responsible for implementation and day to day operations of all associated hubs, routers, bridges, gateways and related equipment. • Installation and Configuration of various types of Personal Computers and Printers. Installation of different operating systems on Intel based PC's. • Documenting and Log analyzing the Cisco PIX series firewall. • Troubleshoot and fix any backup and monitoring systems related issues in conjunction with Systems team and external vendors. • Install Windows Server 2003, configure IP addresses, network printers and configure Client Access for PCs. • Provided 24/7 rotational on call supports for branch offices. • Responsible for configuring site-to-site VPN on Cisco Routers between Head Quarters and Branch locations. • Handled establishment of Windows NT Server and Windows NT Workstations. • Active interest on operational support for routing/switching protocols in complex situations including BGP, OSPF, EIGRP, Spanning Tree, 802.1q, and etc. • Used various scanning and sniffing tools like Wire-shark Environment: TCP/IP, Cisco routers and switches, OSPF, BGP, AVAST, NORTON, MACFEE and Wire-shark Show less



Honeywell

• United States
• Appliances, Electrical, and Electronics Manufacturing
• 700 & Above Employee

• Jr. Network Engineer

  • Jun 2010 - Nov 2011

  • Provide high level technical support, including identifying and resolving problems on Cisco supported products for e-Commerce infrastructure. This included external routing and internal/intranet routing for DMZ servers. • Involved in troubleshooting IP addressing issues and Updating IOS images using TFTP. • Created VLAN and Inter-Vlan routing with Multilayer Switching. • Gained knowledge in IP Subnetting for Class A, B, and C networks. • Handled the up gradation and substitution of system segments like NIC cards, show cards, RAM, console, mouse and different peripherals/gadgets. • Implemented, configured redundancy protocols HSRP, VRRP, GLBP for Default Gateway Redundancy. • Experience working in Datacenter environment, configuration changes as per the needs of company. • Assisted in network engineering efforts consistent with the infrastructure of an Internet Service Provider and support of such network services. Helped in designing and implementation of VLAN for the new users. • Preparation of all Branches Link up time/down time report to maintain SLA with Customer. • Designed and Developed Internet Security policy for the company in order to build a secure and robust network Infrastructure. • Design OSPF areas for reliable Access Distribution and for Core IP Routing. • Monitoring network performance to improve the backup strategy using Net rep, Solar winds. Environment: Cisco routers and switches, HSRP, VRRP, GLBP, NIC cards, TFTP, Net rep, Solar winds and OSPF Show less