SUMMARY

• A dedicated Professional with (10) years of expertise in Designing, Implementation, Administration, Operations and troubleshooting of enterprise data networks as a Network Engineer.
• Extensive work experiences on Cisco Switches, Cisco Routers, Load Balancers & Cisco Firewalls
• Proficient experience in configuring Cisco Catalyst 2900,2960, 3560, 3750, 4500, 4900, Legacy Cat 6500 series and Nexus 7010, 5548 and 2248 switches and deep understanding of architecture.
• Experience working with 2600, 2900, 3600, 3900, 7200, 7600 series Cisco Routers
• Hands on experience in troubleshooting of inter - VLAN routing and VLAN Trunking using 802.1Q.Implemented gateway redundancy with HSRP and GLBP
• Expertise in implementing Layer 2 technologies including VLAN’s, VTP, STP, RSTP, Trunking &Port-security, expertise on working with Etherchannel technology (LACP, PAGP)
• Expertise in configuring and deployment of routing protocols-OSPF, EIGRP, BGP, Policy-based routing over Cisco Routers, configuring and troubleshooting route redistribution.
• Extensive knowledge in implementing and configuring F5 Big-IP LTM-3900, and 6900 Load balancers
• Implemented traffic filters using Standard and Extended access-lists, Distribute-Lists, Route Maps and route manipulation using Offset-list
• Intermediate level understanding of Juniper JUNOS, M series router and SRX firewalls.
• Comprehensive expertise in the implementation of analysis, optimization, troubleshooting and documentation of LAN/WAN networking systems
• Worked on T1/E1/T3 technologies and different LAN & WAN technologies
• FTP, TFTP and DHCP configuration and setup
• Managed inventory of all network hardware, Management and Monitoring by use of SSH, Syslog, SNMP, NTP.

TECHNICAL SKILLS

Routers: Cisco 7600, 7200, 3800, 3600, 2900, 2800, 2600

Routing: OSPF, EIGRP, BGP, RIP v1/v2, PBR, Route Filtering, Redistribution, Summarization, and Static Routing.

Switches: Nexus 2K/5K/7K, Cisco Catalyst 6500, 4500, 3850,3560, 3750, 2960

Switching: LAN, VTP, STP, PVST+, RPVST+, Inter VLAN routing & Multi-Layer Switch, Etherchannels, Transparent Bridging.

Network Security: Cisco ASA 5540, ACL, IPSEC

Load Balancer: F5 Networks (Big-IP) LTM 8900 and 6400.

LAN: Ethernet (IEEE 802.3), Fast Ethernet, Gigabit Ethernet

WAN: PPP, HDLC, Channelized links (T1/T3), Fiber Optic Circuits,Frame Relay.

Gateway Redundancy: HSRP and GLBP

WAN Optimizer: Riverbed Steelhead Appliance

DHCP and DNS: Infoblox

Various Features & Services: IOS and Features, IRDP, NAT, SNMP, SYSLOG, NTP, DHCP, CDP, TFTP, FTP.

AAA Architecture: TACACS+, RADIUS, Cisco ACS.

Network Management: Wireshark, SNMP, Solarwinds

PROFESSIONAL EXPERIENCE

Confidential, New York, NY

Network Engineer

Responsibilities:

• Designed and installed new Branch network systems. Resolved network issues, ran test scripts and prepared network documentation.
• Ensure problems are satisfactorily resolved in a timely manner with focus on providing a high level of support for all customers.
• Once trouble ticket has been created keep customer informed of status of ticket and estimated time to repair.
• Coordinating with service providers for WAN link outages.
• Checking and configuring Cisco 7613 routers at data center for remote sites’ issues.
• Working on Cisco 6509 and 4507 series switches for LAN requirements, that includes managing VLANs, Port Security and troubleshooting LAN issues
• Involved in troubleshooting of DHCP and other IP conflict problems.
• Performed switching technology administration including VLANs, inter-VLAN routing, Trunking, STP, RSTP, port aggregation & link negotiation.
• Configuration of Access List ACL (STD, Ext, Named) to allow users all over the company to access different applications and blocking others.
• Configured Load Balancer viz. F5 LTM
• Responsibilities also include technical documentation of all upgrades done
• Attending meetings and technical discussions related to current project.

Confidential

Network Engineer

Responsibilities:

• Primary responsibilities included performing move add changes to network following standard ITIL ticketing process.
• Involved in complete LAN, and WAN development and optimization as per the organization’s requirement plan.
• Worked on 3850, 4500, 6500 series Cisco Catalyst Layer 3 switches.
• Configured VLAN Trunking 802.1Q, STP (802.1d), Port Security on Catalyst 6500 switches
• Acquired excellent troubleshooting skills on ASR router like 7609 and ASR9K.
• Performed Network Engineering and Optimization in server farm and WAN legs.
• Deployed 7010Cisco Nexus switches, Fabric Interconnects (5548) and Fabric Extenders (2248)
• Performed Nexus In-Line Service upgrades and deployed advanced nexus features VPC &VDC.
• Worked on OSPF and BGP and implemented policy based routing on Cisco Routers to increase network performance.
• Performed attribute manipulation in BGP multi-homed scenario using attributes like AS-Path, MED, Local Preference and weight.
• Worked on Riverbed Steelhead Appliance for WAN Optimization
• Worked on Infoblox DHCP and DNS Servers
• Performed Network Security Assessment and implemented security features such as network filtering, SSH, AAA, SNMP access lists, VTY access listsand HSRP authentication
• Configured ACLs in Cisco 5540ASA firewall for Internet Access requests for servers, Protocol Handling, Object Grouping and NAT.
• Implementation and configuration of F5 Big-IP LTM-6400 load balancers
• Used internal network monitoring tools to ensure network connectivity and Protocol analysis tools to assess the network issues
• Performed basic rule management on Juniper SRX Firewalls. Performed JUNOS upgrades and configured BGP peer-ship on M20i routers.
• Worked on F5 and CSM load balancers deploying many load balancing techniques with multiple components for efficient performance

Confidential

Network Support Engineer

Responsibilities:

• Worked on 2600, 3500, 7613 Cisco Routers and 4500 and 6500 series Cisco Switches and Metro Ethernet.
• Played responsible role for implementing, engineering, & level 2 support of existing network technologies / services & integration of new network technologies / services.
• Configured and managed Cisco access layer routers and switches
• Provided support for troubleshooting and resolving customer reported issues
• Carried out route redistribution & manipulated route updates using distribute lists, route-maps & administrative distance, and offset-lists
• Tested various BGP attributes like local preference, MED, Weight and replicated customer issues in the testing environment lab
• Designed WAN structure to prevent single point of failure in case of link failure
• Configured PVSTP+ for loop prevention and VTP for Inter-VLAN Routing
• Configured site-to-site and remote user access VPN connections. Configuring switch for 802.1x port based authentication
• Troubleshoot switching issues related to VTP and Trunking
• Involved in design, implementation and configuration of HSRP for load balancing on L3 switches
• Configured and deployed BIG-IP LTM 6900 for providing application redundancy and load balancing
• Assisted Network Engineer in the installation and configuration of firewalls.

Confidential

Network Engineer

Responsibilities:

• Configured RIP and EIGRP on 2600, 2900 and 3600series Cisco routers
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500series Cisco Catalyst switches.
• Provided on-call support for installation and troubleshooting of the configuration issues
• Configured Standard, Extended, and Named Access Lists to allow users all over the company to access different applications and blocking others
• Planned and implemented Subnetting, VLSM to conserve IP addresses
• Configured STP for loop prevention and VTP for Inter-VLAN Routing
• Performed troubleshooting of connectivity problems using PING, and Trace route
• Provided Technical support for improvement, Upgradation and expansion of the existing network architecture
• Done troubleshooting of TCP/IP problems and connectivity issues in multi-protocol Ethernet environment

Confidential

Junior Network Engineer

Responsibilities:

• Worked on network-based IT systems such as racking, stacking, and cabling
• IOS Upgradation 1900, 2900, 3500 series Cisco Catalyst switches and 2500, 2600, 3600 series Cisco routers using TFTP
• Performed network troubleshooting, technical support, and recording of backup operations.
• Involved in switching related tasks implementing VLANs
• Prepared the technical specifications in operation manuals
• Served as a main escalation point of contact for level I team
• Coordinated with higher-level support and external vendors for resolution
• Maintained all servers & network equipment with current stable firmware, IOS images & access control lists
• Implemented strategies for operating systems, virus protection, mail systems and Internet services
• Performed scheduled Virus Checks & Updates on all Servers & Desktops.
• Resolved all computer related problems, monitored and maintained system functionality and reliability by identifying ways to prevent system failures.