SUMMARY

• Network engineer with 8 years of experience in switching, routing, firewall technologies, system design, implementation and troubleshooting of complex network systems
• Experience in system and network administration engineering, hardware evaluation, project management, systems and network security, incident analysis and recovery
• Experience in Planning, Installing, Configuring of various Cisco routers and switches
• Experience in implementation, support and troubleshooting of VLAN's including operational knowledge of VLAN Trunking, Inter VLAN routing, 802.1q and Virtual routing and Forwarding (VRF)
• Detailed understanding of different layer 2 protocols like VTP, STP, RPVST, Port Security, Ether channel and also on HSRP
• Very good knowledge about internet protocols like IPv4 and IPv6
• Experience in implementation, configuration & troubleshooting of Access Control Lists (ACL), NAT and upgrading code on Cisco IOS & also on Nexus NX - OS using ISSU
• Strong knowledge of TACACS+, RADIUS implementation in Access Control Network
• Good understanding and hands on experience configuring AAA-authentication, authorization, accounting, and configuring IP Access Control Lists
• Exposure to Check point firewall Gaia R77.10& R77.30
• Experience in installing and troubleshooting of WAN technologies like T1/T3, DS3, STM1, OC3, Gigabit and STM4 circuit types
• Experience in working with multiple vendor devices like Cisco, Juniper
• Performed Network analysis with packet capturing tools Sniffers, Wire-shark etc. and worked on Solarwinds Monitoring tool
• Experience on working with F5 load balancers
• Extensively worked on Linux environment
• Experience in deploying and maintaining layer 7 appliances like Infoblox
• Extensive hands-on experience with complex routed LAN and WAN networks. Experience of routing protocols like EIGRP, OSPF, RIP, and BGP, MPLS/VPN
• Experience in securing and managing remote access using various VPN technologies like IPsec, SSL, and GRE
• Good knowledge and experience in Installation, Configuration and Administration of Windows Servers 2000/2003, Active Directory, FTP, DNS, DHCP, TFTP, Linux OS under various LAN and WAN environments
• Experience with Project documentation tools, implementing and maintaining network monitoring systems and experience with developing network design documentation and presentations using VISIO
• Installing and Configuring Cisco switches 2960, 3560, 3850, 4500, 4900, 6500, Nexus 5000, Nexus 7000, 7700 series with F & M series Line cards and also on Sup1,2 & 2E
• Hands-on expertise with routers 2600, 2900, 3600, 3900, 7200, 7600, ASR-901, ASR-903, ASR 5500, ASR 9010
• Proficient with TCP/IP and relative OSI models
• Experience with packet tracing/sniffing on 802.3 and 802.11 networks
• Decent knowledge in configuring and troubleshooting Cisco Wireless Networks: LWAPP, WLC, WCS, Standalone APs, Roaming, Wireless Security Basics, IEEE 802.11 a/b/g/n/ac, RF spectrum characteristics
• Security policy configuration including NAT, PAT, VPN, SSL-VPN, Route-maps and Access Control Lists
• Strong practical experience in IP addressing, Sub-netting, VLSM and ARP, proxy ARP, and ping concepts
• Expertise in troubleshooting and configuring DNS, DHCP, TFTP, TELNET, SSH, FTP, PING and NFS
• Excellent Verbal, written communication skills and Interpersonal skills with ability to work with large teams as well as independently with minimum supervision & Team Player

TECHNICAL SKILLS

Routing: RIPV1, RIPV2, IGRP, EGIRP, OSPF, BGP, Route Filtering, Redistribution, Summarization, and Static Routing

Switching: VLANs, VTP, STP, PVST+, RPVST+, Inter VLAN routing & Multi-Layer Switch, Ether channels, Transparent Bridging, CEF, DECF, Port Security, VSS on 6500 & 4500 catalyst switches. Cisco 2960, 3560, 4500, 6500, 4900, 2900, 3750, Nexus 5000, Nexus 7700, 7000

Routers: Cisco 7600, 7606, 7609, 7613, 7200, 4400, 3900, 3800, 2900, 1900, ASR-901, ASR-903, ASR 5500, ASR 9010, 7206 VX

Switches: Cisco Catalyst 6500, 4500, 3560, 3750, 2960, Nexus 7000, Nexus 6000, and Nexus 5000, and Juniper EX, QFX and Alcatel 7705 SAR series

WAN Technologies: HDLC, PPP, ISDN BRI

Network Management: Wire shark, SNMP, Ethereal, Solar Winds, Net cool, Science Logic, Log Logic, EM7, PRTG, Blue Coat, Websense, Cisco NAC, ISE, and Active Directory

Security: Checkpoint, Access Control Lists, ASA, VPN

Virtualization: VMotion, ESXi hosts, VSphere

Load Balancer: F5

Operating Systems: MS Windows XP/Vista/Windows 7/8/10, Sun Solaris, Server Linux, CISCO IOS

Applications: Cisco Prime, Solar Winds, MS Office, Inflobox, Hp open view and MS Visio

PROFESSIONAL EXPERIENCE

Confidential, Alpharetta, GA

Network Engineer

Responsibilities:

• Brought up the connections between existing and new environments in both datacenters. Extended all vlans into Fabric path to facilitate connectivity into the new environment with OTV as interconnects. Tested and verified connectivity
• In the process of migrating the entire environment such as ESX hosts, physical servers onto Fabric path. Where they would still be connected via. CE interface but the Border leaf, Spines are connected via the Fabric path interface which eliminates STP between the fabric path interfaces
• Hands on experience configuring the 7710, 7010, 5628, 5596T switches with feature-set like Fabric Path, OTV, VPC+, VPC and also VDC for the Border Leaf, SPN and Leaf design
• Currently Data centers are interconnected with OTV and we are in the process of migrating to Fabric path from OTV, was a part of the team that Architected the plan with every minute details taken into consideration with minimal downtimes
• Configured and deployed VPC+ between Nexus 7710 and Nexus 56128, 5596 switches
• Installed Layer 2 Enhanced license package on the new and old new gear for Fabric path feature
• Successfully installed the Cat6509 with sup720 to Sup2T with Quad-VSS implemented on it
• Configured VSS on Cisco Catalyst 6509 switches and involved in resolving the issues which are raised after the configuration
• Serve as part of a team of network engineersresponsible for base wide networkupgrade from Cisco Layer 3 Catalyst switches to JuniperLayer 3 EX4200 & EX3200 switches
• Expertise in implementing redundancy gateway protocols like HSRP, VRRP
• Dealt with device/module/fan/line card down issues. Acted promptly in redirecting the traffic and investigating the cause of failure. If necessary raising RMA with Cisco
• Responsible for monitoring the dashboard with NNMI console and look out for any instabilities in network
• Deep knowledge in installing, configuring VMware vSphere. Creating and managing virtual servers and clients. Advance knowledge on ESXi Vmotion
• Worked closely with Network Operations Center team for international sites on alerts, initial information, engaging various customers
• Worked on OTV to extend L2 VLANs between data centers over IP on Nexus 7710 switches
• Experience with configuring FCOE using Cisco nexus 5548
• Configured Nexus 2000 Fabric Extender (FEX) which acts as a remote line card (module) for the Nexus 5600 to connect servers and storage devices
• Configuring EIGRP on different router series and troubleshooting the issues with protocol in case of any misconfiguration like variance to increase the convergence speed
• Experience in manipulating routes in OSPF by configuring route filters, route summarization, static routes and default routes
• Involved in break-fixes in layer 3 issues such as OSPF neighbor down/flapping, LDP neighbor down/flapping
• Configured IP helpers on the VLAN’s as requested by the customers as per their DHCP settings on Infoblox
• Experience in metric tuning and path manipulation based on the requirement
• Experience in working with the stub areas in OSPF and also implemented virtual links if needed
• Experience in preventing routing loops by changing metric value, administrative distances and filtering using tags
• Analyze site network for performance, prepare capacity planning reports and propose if a WAN bandwidth upgrade is required
• Work closely with service providers ATT and Verizon for WAN circuit upgrades and regular maintenance.
• Experienced in working on WAN technologies like HDLC, PPP,ISDN BRI
• Worked closely on redistributing internal EIGRP into BGP via WAN link for our ISP. Also made sure that WAN utilization is optimum by using features like ACLs and riverbed technology
• Also have hands on experience on establishing connectivity to our remote sites via frame relay and point-to-point via WAN serial links
• Experience in configuring service level agreements and introducing policy based routing depending on the requirement
• Experience in configuring IBGP and EBGP and had knowledge in understanding neighborship requirements and neighbor states
• Experience in analyzing the BGP tables and routes and also had experience in injecting routes into BGP using different methods
• Experience in configuring BGP in Dual-homed, single multi-homed and dual multi-homed designs
• Experience in troubleshooting next hop issues with IBGP switching and analyzing IBGP BGP table entries
• Had in-depth knowledge in BGP path attributes like Weight, Local preference, Origin code, AS path and MED
• Experience in introducing very unique concepts into the topology like BGP multi paths to allow more than one best route in to the routing table
• Worked on creating and maintaining new subnets, host with several record entries like PTR, A etc. with DHCP scopes using Graphical User Interface as well as IBCLI (Infobloxcommand line interface)
• Experience in configuring Ether channels and troubleshooting using misconfiguration guard if remote end of ether channel is misconfigured
• Experience in configuring VTP and troubleshooting issues regarding VTP versions, also had experience in understanding and analyzing VTP pruning rules
• Had a profound understanding in how CEF works like FIB’s, Adjacency tables and how forwarding engine utilizes CEF
• Experience in understanding various primary switch components like switching processor and routing processor, ASIC’s, Switch fabric and different memories (DRAM, NVRAM, CAM, TCAM, SRAM)
• Experience in configuring many switches in to single virtual switch using Stack-wise technology and VSS (virtual switching system)
• Accessed Cisco Prime NCS/WCS and 5508 series Wireless Controller to manage wireless networks
• Configured Cisco Wireless Access Points 1100, 3600 through Cisco NCS Prime
• Manage deployment and testing of code updates for wireless systems, such as WCS, WiSM, and WLC
• Conducted wireless surveys using Fluke Air Magnet Pro and provisioned new AP's using Cisco Prime Infrastructure 2.1
• Configured Cisco wirelesscontrollers and access points for enterprise networkincluding setting up SSIDs and WLANs on WLC’s like 2504, 5508 and 5760
• Experience in configuring switch as a DHCP server and managing switch ports such as err-disabled feature
• Experience in configuring and troubleshooting STP, RSTP, MSTP features
• Experience in configuring and troubleshooting POE (power over Ethernet) technologies like Cisco inline power, IEEE 802.3af, IEEE 802.3at (POE+) and Cisco universal power over Ethernet
• Experience in securing VLAN’s using VLAN access lists and private VLAN’s

Environment: Nexus 7710 with N77-F324FQ-25, N77-F348XP-23 & N77-M348XP-23L, Nexus 56128P, 5648Q, 5596, 2248TP-E, 2348UPQ, VPC, VDC Cisco Catalyst 6509-E with Sup2T-XL, Catalyst 4500, 3850, 2960-X TTL Switches, Cisco WLC 5760, 5508, Cisco 3600, 3800, 7200 & 7600series Routers

Confidential, Madison, WI

Network Engineer

Responsibilities:

• Working in high availability Nexus Environment and provide Level 3 Network Support
• Working with Cisco Nexus 2148 Fabric Extender and Nexus 5500 series to provide a Flexible Access Solution for datacenter access architecture
• Ensuring problems are satisfactorily resolved in a timely manner with focus in providing high level of support for all customers
• Worked on CISCO Nexus 7700, Nexus 5600 & 5500 series, and Nexus 2000 platforms
• Exposure to Nexus, Hardware Architecture of the Sups, chassis, I/O Modules, Fabrics, Licensing, VDC, VPC, ISSU, Using NXOS CLI
• Worked with Cisco advance services to implement data center Nexus environment for new Upgraded the NX-OS in nexus 7018, 7010 and nexus 5548 and 5596.Consolidated multi-tiered environment into a pair of Nexus 7000 switches using VPC and VRF
• Configuring routing protocols like EIGRP, OSPF & BGP and troubleshooting layer3 issues on 2600, 2900 and 3600 series Cisco routers
• Testing authentication in OSPF and EIGRP
• Experience in configuring EIGRP over Frame relay and different WAN technologies
• Experience in managing the topology tables, routing tables and table updating process
• Monitoring different types of packets like hello packets, update packets and acknowledge packets and digging deep in to the IP header to find the issues with the protocol behavior
• Experience in configuring and managing metric manipulation, path manipulation, route summarization, route filters based on the requirement
• Configuring OSPF on different network types and troubleshooting various issues in case of any misconfiguration
• Experience in monitoring and understanding different types of LSA’s in OSPF and had a profound understanding about OSPF message types and neighbor states
• Worked on OSPF features like Totally Stubby Area, Stubby Area, Not So Stubby Area and route summarization
• Expertise in creating Access control lists for layer-3 security and providing first hop redundancy using protocols like HSRP
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches
• Troubleshooting day-to-day switching issues with VTP and Trunking protocols (like 802.1q and ISL) on catalyst 3560, 3750 and 4500 switches
• Configured UDLD, LLDP, TACACS, VLANS on HP2920, Experiences in configuring static and dynamic LACP trunks, hands on experience in troubleshooting link flaps, VLANS, SNMP etc.
• Performed VSS on cisco catalyst 6500series switches
• Involved in designing and managing of the cisco Wireless control and successful moving Wireless user off from the old Wireless control that was decommissioned on to the new Wirelessin a new data center
• Experience in configuring network monitoring features SPAN and RSPAN to spot network breaches
• Configured BPDU Guard, port-fast, uplink fast and other spanning tree features
• Implemented port aggregation & link negotiation using LACP and PAGP
• Experience in working with Checkpoint Gaia R77.10 & R77.30
• Performed security operations by adding rules in firewalls and pushing firewall policy as per the incidents and rules requests from users
• Experience troubleshooting A-sync packets
• Providing input on day-to-day securityarchitecture policies and procedures

Environment: Nexus 7710, 7010, 56128, 5596& 5548 switches, Cisco Catalyst6500, 4500, 3650 & 2960Switches, Cisco 2501, 2620, 3620, 3640series Routers, Cisco WLC 5760, 5508, Checkpoint R77.10, R77.30

Confidential, Atlanta, GA

Network Engineer

Responsibilities:

• Responsible for Installation, configuration and maintenance of Cisco 7200, 3900, 2800, 2600, 2500 and 1800 series Router/Cisco Catalyst Cisco 6500, 4500 (SUP 6), 3750,2950seriesSwitches
• Managing Port security, Trunking, Inter VLAN routing, LAN security
• Key contributions include troubleshooting of complex LAN/WAN infrastructure
• Worked on Cisco routers 2950, 2600 and Cisco switches 4500, 2900
• Configuring and troubleshooting DNS and DHCP servers
• Experience in Cisco 2600, 3640 routers and catalyst 2950 series
• Implement, build, Support and Maintain Cisco partners training labs based on various Routing/Switching/Datacenter architectures using Cisco and VMware Virtualized Infrastructure
• Worked extensively on implementation and configuration of F5 LTM 6400 Load Balancers
• Created pools for the nodes and assigned Virtual IP’s to those pools on F5
• Implemented least connections algorithm for the LTM, GTM and also defined the persistence
• Experience in implementing Client SSL and Server SSL for the authentication
• Performed TCP Dump for checking the ping operation from F5 to Pools
• Configure Cisco Routers/L3 Switches for EIGRP using route redistribution, filtering and securing the network routes using encryption and authentication
• Configured VLANs, Private VLANs, VTP, dot1Q Trunking, and VTP-pruning on switches. Implementing Security features like BPDU guards/Filters, loop guard, port security
• Configured IPsec VPN access for client to site remote access
• Maintenance and Troubleshooting of connectivity problems using Ping, Trace route

Confidential

Network Support Engineer

Responsibilities:

• Involved in configuration and management of different Layer 2 switching tasks which includes address learning, efficient switching etc.
• Involved in HSRP standby troubleshooting and load balancing protocol GLBP, Port channel management of the network
• Dealt with the escalation problems from Level1, Level 2 & Level 3 for routing, switching and WAN connectivity issues using ticketing system Remedy
• Experience in routing protocols like OSPF, BGP, and standby protocols like HSRP and VRRP application in the routers
• Establishing VPN Tunnels using IPsec encryption standards and also configuring and implementing site-to-site VPN, Remote VPN
• Installed and configured routers including 1800, 2600 along with Cisco switches including 3750 and 6500
• Involved in configuration of WAN connection using a 3600 series Router and Frame relay method
• Worked on Linux environment for backing up data, disaster recovery process
• Have extensive knowledge on Linux shell
• Designed and implemented an IP addressing scheme with subnets for different departments
• Used various Network sniffers like Ethereal, TCP dump etc.