SUMMARY

• Over 9 years of expertise with multiple operating systems, design, implementation, and maintaining of Servers, LAN\WAN networks, Switching, Routing, Network Administration, firewall technologies, systems design and troubleshooting.
• Extensive work experience with Cisco Routers, Cisco Switches, and Firewalls.
• Cisco router models like 3800, 3600, 2800series and Cisco catalyst 4500, 3750, 3500series switches
• Administration and diagnostics of LAN and WAN with in - depth knowledge of TCP/IP, NAT, PPP, ISDN and associates network protocols and services.
• Routing experience using protocols RIP v1 & 2, EIGRP, OSPF and BGP
• Experience of implementing and troubleshooting complex layer 2 technologies such as VLAN Trunks, VTP Ether channel, STP, RSTP and MST.
• Expertise in implementation and troubleshooting of protocols such as STP, RSTP, PVST, HSRP and VRRP
• Knowledge of TACACS+, RADIUS implementation in Access Control Network.
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems.
• Knowledge with different Network Management Tools and Sniffers like Wireshark (ethereal), Confidential -Open view, RSA envision, and Cisco works to support 24 x 7 Network Operation Center.

PROFESSIONAL EXPERIENCE

Confidential, TX

NOC/Network Engineer

Responsibilities:

• LAN Segments monitoring/Trouble shooting LAN related issues.
• Experience in periodic backup of Router/Switch configurations.
• Analyzing the Bandwidth Utilization of the Links.
• Installing, configuring Cisco Catalyst switches 3750 & 3550 series and Routers configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design.
• Responsibilities are Troubleshooting, Snow Cue, Switch Port, Outages, Bandwidth Analysis, High Utilization of LAN and WAN.
• Troubleshooting on the devices by remote login to determine the RFO (Reason for outage) and RCA (Root cause analysis) to minimize the consequences of malfunctions.
• Monitoring power failures, circuits down and other performance issues of Network.
• Experience of Maintenance/updating of Network diagrams.
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches.
• Experience in VLAN’s, Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• Experience BPDU Guard, port-fast, uplink fast and other spanning tree features.
• Maintenance & Monitoring Base station infrastructure.
• Ensure standard Router and Switch Configurations are maintained.
• Monitoring the NMS system for different Network Alerts.

Confidential

Network Engineer

Responsibilities:

• Deploying and decommissioning Cisco switches and their respective software upgrades.
• Converting Cat OS to Cisco IOS Config Conversion on distribution layer switches
• Performing the ACL requests change for various clients by collecting source and destination information from them.
• Performing troubleshooting on slow network connectivity issues, routing issues that involves
• Configure Corporate, Wireless and Lab Devices which includes Bandwidth Upgrade, Adding New Devices, Decom the Devices, Testing( Pilot ) .
• Implemented DHCP, DNS, IPAM configuration on the servers to allocate, resolute the IP addresses from Subnet.

Confidential, Plano, TX

Network Engineer

Responsibilities:

• Involved in complete LAN, WAN development (including IP address planning, designing, installation, configuration, testing, maintenance etc.).
• Several projects done successfully, Decommissioning Symantec Sites, uplift projects, Veritas.
• Knowledge of ISE configuration and implementation, Cisco Wireless Network Technology.
• Installing, configuring Cisco Catalyst switches 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design.
• Implemented with Cisco Layer 3 switches 3750, 4500, 6500 in multi VLAN environment with the use of inter-VLAN routing, HSRP, ISL trunk, ether channel.
• Involved in Switching Technology Administration including creating and managing VLANS’s, Port security, Trunking, STP, Inter Vlan routing, LAN security etc.
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches.
• Configured VLAN’s, configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• Configured BPDU Guard, port-fast, uplink fast and other spanning tree features.

Confidential, Houston, TX

Network Engineer

Responsibilities:

• Involved in complete LAN, WAN development (including IP address planning, designing, installation, configuration, testing, maintenance etc.).
• Installing, configuring Cisco Catalyst switches 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design.
• Implemented with Cisco Layer 3 switches 3750, 4500, 6500 in multi VLAN environment with the use of inter-VLAN routing, HSRP, ISL trunk, ether channel.
• Involved in Switching Technology Administration including creating and managing VLANS’s, Port security, Trunking, STP, Inter Vlan routing, LAN security etc.
• Knowledge in migration from Frame-Relay/ATM network to MPLS-based VPN for customer’s WAN infrastructure.
• Configured Cisco routers which were also connected to Cisco PIX 535 security appliances providing perimeter based firewall security.
• Configured VLAN’s, configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• Configured BPDU Guard, port-fast, uplink fast and other spanning tree features.
• Remediation of firewall rules from checkpoint firewalls to Cisco ASA firewalls and their implementation.

Confidential, Houston, TX

Network Engineer

Responsibilities:

• In-depth expertise in the implementation, optimization, troubleshooting and documentation of LAN/WAN networking systems.
• Optimized performance of the WAN network consisting of Cisco 3550/4500/6500 switches by configuring VLANs.
• Involved in the configuration & troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, BGP v4. Configured IP access filter policies.
• Providing daily network support for national wide area network consisting of MPLS, VPN and point-to-point site.
• Configuring HSRP between the 3845 router pairs of Gateway redundancy for the client desktops.
• Configuring GLBP, VLAN Trunking 802.1Q, STP, Port security on Catalyst 6500 switches.
• Configured VLANs with 802.1q tagging. Configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.
• To secure configurations of load balancing in F5, SSL/VPN connections, Troubleshooting CISCO ASA firewalls, and related network security measures.
• Designed and implemented DMZ for Web servers, Mail servers & FTP Servers using Cisco ASA5500 Firewalls.
• Having Data Center Design Experience, installing and Configuring Network Devices in a Data Center including patching the cables in the Patch Panel.
• Hands-on experience in the network management of circuits using TDM and Frame Relay network, performing configuration and provisioning management, fault management and performance monitoring.
• Responsible for service request tickets generated by the helpdesk in all phases such as troubleshooting, maintenance, upgrades, patches and fixes with all around technical support.

Confidential, Oakville, CA

Network Engineer

Responsibilities:

• Hand on experience the configuration and implementation of various Cisco Routers and L2 Switches.
• Troubleshooting the Network Routing protocols (BGP, EIGRP and RIP) during the Migrations and new client connections.
• Designed IP Addressing schemes, VLAN tables and Switch port assignments, Trunking and Ether-channel implementation.
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches.
• Implemented, configured redundancy protocols HSRP, VRRP, GLBP for Default Gateway Redundancy.
• Gained hands on experience with VLSM, STP, VTP, VLAN Trunking.
• Built site-to-site IPSec VPNs over Frame-relay & MPLS circuits on various models of Cisco routers to facilitate adding new business partners to new and existing infrastructures.
• Providing daily network support for national wide area network consisting of MPLS, VPN and point-to point site.
• Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms.
• Responsible for implementing QOS parameter on switching configuration.
• Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500/PIX security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with the firewalls as per the design.
• Responsible for Cisco ASA firewall administration, Rule Analysis, Rule Modification.
• Maintenance and Troubleshooting of connectivity problems using Ping, Trace route.
• Upgrading Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Performing network monitoring, providing analysis using various tools like WireShark, Solarwinds etc.

Confidential

Technical Lead

Responsibilities:

• Troubleshooting complex networks layer 1, 2(frame relay, ATM, Point to Point, ISDN) to layer 3 (routing with
• Managing the service request tickets within the phases of troubleshooting, maintenance, upgrades, fixes, patches and providing all-round technical support.
• Commissioning and Decommissioning of the MPLS circuits for various field offices.
• Preparing feasibility report for various upgrades and installations.
• Ensure Network, system and data availability and integrity through preventive maintenance and upgrade.
• Involved in L2/L3 Switching Technology Administration including creating and managing VLANs, Port security, Trunking, STP, Inter-Vlan routing, LAN security.
• Worked on the security levels with RADIUS, TACACS+.
• Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms.
• Configured switches with port security and 802.1x for enhancing customers security.
• Monitored network for optimum traffic distribution and load balancing using Solar winds.
• Validate existing infrastructure and recommend new network designs.
• Created scripts to monitor CPU/Memory on various low end routers in the network.
• Installed and maintained local printer as well as network printers.
• Handled installation of Windows NT Server and Windows NT Workstations.
• Handled Tech Support as it relates to LAN & WAN systems