SUMMARY:

• Over 6 years of IT experience as Network Engineer in configuring and deploying network devices like Cisco routers and Switches. Troubleshoots connectivity issues in small and large enterprise network environment.
• Expertise in Routing protocols like OSPF, BGP, EIGRP, ISIS and RIP
• Hands-on in implementing and troubleshooting Switch technologies such as STP, VTP, 802.1q, VLAN and MPLS
• Hands-on network security protocols such as IPSEC tunnels, GRE tunnels, NAT, PAT, ACLs and VPN MP-BGP
• Gained experience working with Layer-2 and Layer-3 Switching and Security
• Gained expertise in writing test procedures and test plans with a strong understanding of design, implementation, and execution of testing methodologies
• Good knowledge of Switched Virtual Interface
• Fault Tolerance using HSRP and VRRP
• Knowledge in Multicasting, MPLS and MPLS-VPN
• Good knowledge of OSI Model and TCP/IP networking standards with protocols such as SNMP, FTP, ICMP and IPv6
• CCNA, MCITP, RHCE Certifications
• Highly motivated team player with good communication skills
• Hand-on experience configuring Multicast Routing
• IP Addressing IPV4, IPV6

TECHNICAL SKILLS:

Cisco Platforms:

Cisco Catalyst 3550, 3750, 6500,6500E, series switches

Networking Protocols:

RIP, OSPF, EIGRP , BGP, STP, RSTP, VLANs, VTP, MPLS

Security Protocols:

IKE, IPSEC, SSL-VPN

Operating System:

Windows 7/XP, Windows Server 2008, Linux Red Hat

PROFESSIONAL EXPERIENCE:

Confidential

Senior Network Engineer

Responsibilities:

• Involved in complete LAN, WAN development including IP address planning, designing, installation, configuration, testing, maintenance etc .
• Involved in Switching Technology Administration including creating and managing VLANS's, Port security, Trunking , STP, InterVlan routing , LAN security etc.
• 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.
• Used Cisco routers, switches, Access Points, Concentrators for implementation and management purpose.
• Configured IP, EIGRP and BGP in routers.
• Configured and installed multi-protocol IP, IPX multi-interface Cisco routers.
• Upgraded and updated Cisco IOS from 12.3T to 12.4.
• Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Used PIX Firewall and ACLs for authentication of EIGRP, BGP and to ensure high security on the network.
• Responsible for advanced enterprise wireless LAN administration and design, mesh networks, and point-to-point and point-to-multipoint topologies.
• Configured Cisco 7200 routers which were also connected to Cisco PIX 535 security appliances providing perimeter based firewall security.
• Configured Protocol Handling, Object Grouping and NAT on ASA Firewalls 5505 .
• Involved in migration from Frame-Relay/ATM network to MPLS-based VPN for customer's WAN infrastructure.
• Troubleshoot latency and throughput issues on MPLS and Dedicated Internet Access circuits.
• Time to time upgrade network connectivity between the building blocks with multiple link paths and routers running HSRP, EIGRP in unequal cost load balancing to build resilient network.
• Used Network monitoring tools to ensure network connectivity and Protocol analysis tools to assess and pinpoint networking issues causing service disruption.

Environment:

Cisco Layer 3 switches 3750, 4500, 6500 EIGRP, BGP, IPX, VLAN, HSRP, ISL, Qos, CoS, Concentrators, DHCP, ASA Firewall, PIX Firewall, Ethereal, Cisco works, NAT, IPsec VPN, MPLS.

Confidential

Senior Network Engineer

Responsibilities:

• Enhanced network performance by Migrating configurations between Integrated Services Routers ISR G2 Routers
• Managing and troubleshooting Wireless LAN connectivity issues.
• Provided an IP Addressing scheme using VLSM and maintained VLAN table, and implemented DHCP server for assigning IP address to various connecting devices.
• Carried out Route-redistribution between different routing protocols like OSPF, BGP, EIGRP for increased efficiency.
• Provided BGP routing protocols for implementing multi-homing connection between two ISP's and providing traffic flow to certain areas.
• Implemented WAN network technologies like MPLS and Frame Relay, switching technologies like STP, switch and VLAN security on L2 and L3 layer switches.
• Performed Troubleshooting, upgrades, and administered multiple vendor systems platform and maintaining system applications.
• Configured EIGRP, RIP, OSPF, BGP and static routing, MPLS WAN connectivity, Frame relay Wan Connectivity and Telnet and SSHv2 sessions.
• Configuring and troubleshooting routing protocols like OSPF, BGP and EIGRP on Cisco routers
• Upgrading the IOS on the 6500 switch and saving the old system configuration and running-configuration.
• Installed and configured 6509 Cisco Catalyst Switch, creating VLANs and assigning ports to the VLAN, configuration of routing protocols such as OSPF, EIGRP and RIP.
• Working knowledge of installation, testing and troubleshooting of Routers, Switches, Servers and Firewalls.
• Implemented Static NAT and PAT for internet users
• Configured NAT and PAT on the Cisco PIX Firewalls for the Internal Systems
• Extended support and troubleshooting for the field technicians at the remote sites.
• Supported remote location with site to site VPN, Remote access VPN such as IPSEC.

Environment:

Cisco 2600, 2800, 3600, 3800, and 7200 series routers, Cisco 2950, 3550, 3560, 6509 Catalyst Switches, ASA 5510 firewall.

Confidential

• Conducted a thorough technology analysis as a complete upgrade of existing network which was required by the company.
• Involved in complete LAN, WAN development including IP address planning, Designing, installation, configuration, testing, maintenance etc
• Design and implementations of network security using firewalls Cisco ASA and other perimeter protections technologies and strategic locations.
• Implemented redundancy using BigIP F5 Load balancers and provided support based on the requirements of the client.
• Configuring and troubleshooting Local traffic manager LTM and Global traffic manager GTM in BigIP F5.
• Configured SSL offloading on SSL module with CSM and on Cisco ACE.
• Configured routing protocols BGP and redistribution of OSPF on the Routers.
• Involved in Switching Technology Administration including creating and managing VLANS's, Port security, Trunking , STP, InterVlan routing , LAN security etc.
• Configured and verified redundancy protocols HSRP/GLBP on Cisco Layer 3 devices for load balancing and fail over.
• Configuring Cisco ASA firewall and creating access rules for network traffic.
• Configuring and administration of Checkpoint firewall and creating access rules for network traffic.
• Implementing checkpoint firewall to protect local network and DMZ.
• Configuring and troubleshooting various Cisco Switches and Routers in the network.
• Implemented and monitored the network using network sniffing and scanning tools such as Wireshark, Ethereal, and Nmap.
• Other responsibilities included documentation and support other teams.

Confidential

Sr Network Engineer

Responsibilities:

• Installed configured and deployed Routers and Switches for branch expansion and improved network infrastructure for higher throughput.
• Provided BGP routing for multi-homing between two different ISP's and troubleshooting BGP issues.
• Provided routing protocols like OSPF and EIGRP for network connectivity for multi-vendor network devices.
• Worked extensively on Access-list on firewall and router for permitting required flow of traffic.
• Implemented Route Redistribution for traffic flow between different routing protocol platforms
• Created VLANs for separating different corporate internal database, efficient network management and VTP for inter-vlan routing.
• Design, implementation, ongoing management and troubleshooting of VOIP network
• Implemented security from outside and web access using Dynamic and Static NAT, PAT.
• Provided IP addressing to different devices connected with the help of DHCP server and implementing VLSM
• Configured and Implemented Site-Site VPN and Remote Access VPN for User flexibility and security using IPSEC
• Provided monitoring and troubleshooting of network infrastructure with the help of PING and TRACEROUTE.
• Provided IOS upgrade with help of TFTP server.
• Configured BGP, AS-PATH prepending such that an ISP is preferred to the other for specific routes
• Planned, designed and implemented a redundant Cisco LAN using L3 switches. The switches were initially set up, VTP configuration, VLAN creation, Ether channel configuration and so on
• Network Management operations using Simple Network Management Protocol SNMP for fault tolerance and CiscoWork2000 server for configuration management, syslog collection, and hardware and software inventory management
• Enabled MD5 EIGRP authentication on routers to prevent the network from being compromised
• Designed and implemented a redundant Cisco 802.11ag AP wireless network using IP phones, 3750 switches and 2960 routers
• Implemented various OSPF network configuration types - backbone, NBMA, point-to-point and point-to-multipoint on large Cisco networks using Routers Series - 1800, 2600, 2800 and Switches
• Provided training on Windows Server 2008 to students and MCITP candidates - candidates became MCITP certified
• Implemented LAN based security using 802.1x authentication and port security for proof of legitimacy before connecting to the network
• Administered Windows 2000, Windows Server 2003 network infrastructure DNS, RRAS and DHCP , and Backup and Recovery of data in a large network

Hardware:

Cisco 1800, 2500, 2600, 2800, 2900 series router, 3550, 3560, 3750 switches, ASA5505, PIX515E series firewall, Windows Server 2003/2008, MS-ISA

Confidential

Network Engineer

Responsibilities:

• Responsible for administration of switching and routing protocols including VLANs, inter-VLAN routing, trunking, port aggregation link negotiation.
• Performed route redistribution manipulated route updates using distribute lists, route-maps administrative distance
• Redistribution of routing protocols and Frame-Relay configuration
• Design, implementation and troubleshooting router to router VPN connectivity.
• Implementing 802.1x authentication on switches using RADIUS and TACACS
• Designed and implemented OSPF over Frame Relay network and traffic filtering at Area boundary routers and Autonomous System Boundary Router
• Monitoring WAN utilization using PRTG and various network applications and using them to monitor distribution layer devices.
• Provided routing efficiency using route-maps, VLSM, prefix and distribution lists, route reflectors, summarization, distance and path-vector manipulation
• Implementing Network Security with Cisco IOS Feature Set, NAT, and SNMP.