Senior Network Engineer
Resume:
Aditya
******.****@*****.***
******@*************.***
SUMMARY
Cisco Certified Network Engineer with 7 years of professional experience in Network engineering, performing Network analysis, design, Implementing, capacity planning with focus on performance tuning and support of large Networks.
Strong knowledge in Cisco/Juniper Routing, Switching and Security with Cisco hardware/software (heavy Cisco shop) experience.
Profound knowledge on various WAN technologies like E1/T1/E3/T3, HDLC, Frame-Relay and PPP.
Proficient in configuring Cisco Catalyst 2900,2960, 3560, 3750, 4500, 4900, 6500 series and high performance data center switch like Nexus 7010,7018, 7009, 5020, 2148, 2248 devices.
Expertise in installing, configuring, and troubleshooting of Cisco Routers (3800, 3600, 2800, 2600, 1800, 1700, 800, ASR 9K, 10K)
Extensively worked on Cisco catalyst 6509 and implemented VSS along with VDC and VPC on Nexus 5505, 7009 switches.
Expertise in Configuration of Virtual Local Area Networks (VLANS) using Cisco routers and multi-layer Switches and supporting STP, RSTP, PVST, RPVST along with trouble shooting of inter-VLAN routing and VLAN Trunking using 802.1Q.
Expert level knowledge of troubleshooting, implementing, optimizing and testing of static and dynamic routing protocols such as EIGRP, OSPF, BGP,RIP V1,V2 ability to interpret and resolve complex route table problems and implemented strategies for the expansion of MPLS VPN network.
In-depth knowledge and hands-on experience in Tier II ISP Routing Policies, Network Architecture, IP Subnetting, VLSM, TCP/IP, NAT, DHCP, DNS, SONET POS OCX / GigE circuits, Firewalls.
Proficiently implemented traffic filters using Standard and Extended access-lists, Distribute-Lists, Route Maps and route manipulation using Offset-list.
Hands on experience in deployment of GRE tunneling, SSL, Site-Site IPSEC VPN and DMVPN.
Managed inventory of all network hardware, Management and Monitoring by use of SSH, Syslog, SNMP, NTP.
Working knowledge with monitoring tools like Solar Winds & network packet capture tools like Wire-shark
Strong hands on experience on PIX Firewalls, ASA (5540/5550) Firewalls. Implemented Security Policies using ACL, Firewall, IPSEC, SSL, VPN, IPS/IDS, AAA (TACACS+ & RADIUS).
Expertise in OSI layer model/TCP/IP.
Have knowledge on various advanced technologies like VOIP, H.323, SIP, QOS, IPv6, Multicasting, and MPLS.
Knowledge in implementing and configuring F5 Big-IP LTM-6400 load balancers.
Experience with installation, configuration and management of various flavors of firewalls. Eg: ASA 5500 & 5500-x with different options.
Check point UTM series, Check point IP series, Application layer firewall PA-4000 & 2000 series, Sidewinder McAfee, Fortinet 3240c, Cyberoam, SGS 5440 Symantec Gateway security.
Experience with convert Checkpoint VPN rules over to the Cisco ASA solution. Migration with both Checkpoint and Cisco ASA VPN experience.
Expertise in installing, configuring and troubleshooting Juniper EX Switches (EX2200, EX2500, EX3200, EX4200, EX4500, EX8200) series.
Expertise in installing,configuring and troubleshooting Juniper Routers ( E,J,M and T-series)
Implementation of Juniper Router and Switches SRX, J, MX, EX Series
Implementation of Juniper Firewall, SSG Series, Net screen Series ISG 1000, SRX Series
Implementation of HA-JSRP in JUNOS devices, SRX Series Router/Firewall in both A/A and A/P mod
Working experience with REMEDY for ticket change management process
Experienced in developing Web Services with Python programming language
Experienced with Python frameworks like Webapp2 and Flask
Good Knowledge of Python and Python Web Framework Django
Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools.
Education: Bachelors of Engineering in Computer Science
CERTIFICATIONS:
Cisco Certified Network Associate (CCNA)
Cisco Certified Network Professional (CCNP)
TECHNICAL SKILLS AND TOOLS
Network Configuration: Advanced switch/router configuration (Cisco IOS access list, Route redistribution/propagation).
Cisco Routers: Cisco GSR 12416, 12418, Cisco 7200vxr, Cisco 3640, Cisco 3600
Redundancy and management :HSRP, RPR, NSF/NSR
Physical interfaces: Fast Ethernet, Gigabit Ethernet, Serial, HSSI, Sonet (POS)
Layer 2 technology: VLAN, VTP, VMPS, ISL, dot1q, DTP, Spanning-tree, PVST
Layer 3 Switching: CEF, MLS, Ether Channel
QOS: CBWFQ, LLQ, WRED, Policing/Shaping.
Network Tools: IXIA, Bugzilla, Wireshark, Ethereal.
Switches: Catalyst 6500, MSFC, MSFC2, 7600, 3700, 3500
Routing Protocols: IGRP, EIGRP, OSPF, BGPv4, MP-BGP,RIP
WAN Protocols: HDLC, PPP, MLPPP
Circuit switched WAN: T1/E1 – T3/E3/OCX (Channelized, Fractional & full).
Packet Switched WAN:ATM, FRAME RELAY, MPLS VPNs
Load Balancer: F5 Networks (Big-IP) LTM 8900 and 6400
Security Technologies: Cisco FWSM/PIX/ASDM, Juniper SRX, Cisco ASA, Checkpoint, Palo Alto.
Tunneling Protocols: L2TP, IPsec, PPPoE, GRE, MPLS, IEEE 802.1Q
Authentication Protocols: PAP, CHAP
Network Devices: Routers, Switches, Hubs, Cables/Trunks, terminating equipment
Operating Systems: Microsoft XP/Vista/7, UNIX, Linux (Redhat, Opens use, Fedora), Windows Servers 2003/2008, Windows MS-Office.
JUNIPER Routers :Juniper MX480, 240, 80 series
JUNIPER Switches: Juniper EX4500, 4200
Scripting: Python (Django,Webapp2, Flask)
PROFESSIONAL EXPERIENCE
BCBS, Fargo, ND July 2014 – Till Date
Sr. Data Network Engineer
Responsibilities:
Experience working with Cisco IOS-XR on the ASR9000 devices for MPLS deployments
Experience with migrating from OSPF to BGP WAN Routing protocol
Configuration 7609, 7606 with OSPF and catalyst 6505, 4500, 3550 switches with various VLAN.
Configured HSRP and VLAN trucking 802.1Q, VLAN Routing on Catalyst 6500 switches
Configured BPDU Guard, port-fast, uplink fast and other spanning tree features
Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256 with PIX Firewalls
Network Redesign for Small Office/Campus Locations. This includes changes to both the voice and data environment
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 setting up MPLS Layer 3 VPN cloud in data center and also working with BGP WAN towards customer
Experience with moving data center from one location to another location, from 6500 based data center to Nexus based data center
Experience in communicating with different customers, IT teams in gathering the details for the project
Create and test Cisco router and switching operations using OSPF routing protocol, ASA Firewalls, and MPLS switching for stable VPNs
Redesign of Internet connectivity infrastructure for meeting bandwidth requirements
Optimized performance of the WAN network consisting of Cisco 3550/4500/6500 switches by configuring VLANs
Provided Load Balancing towards access layer from core layer using F5 Network Load Balancers.
Configuration and troubleshooting of Cisco 2500, 2600, 3000, 6500, 7500, 7200 Series routers
Experience in WAN technologies like T1/T3, DS3,STM1 and STM4 circuit types
Configured Security policies including NAT, PAT, VPN, Route-maps and Access Control Lists
Worked on F5 LTM, GTM series like 6400, 6800, 8800 for the corporate applications and their availability.
Worked on Cisco Routers, Active/Passive Hubs, Switches, Cisco PIX Firewall, Nortel VPN Concentrators TCP/IP, NAT and Checkpoint ESX/GSX firewall
Having Data Center Design Experience, installing and Configuring Network Devices in a Data Center including patching the cables in the Patch Panel. Design and implemented network infrastructure and configured the entire network Infrastructure devices including Network Printers and Register
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
Performed load balancing and application level redundancy by deploying F5 BIG-IP LTM 3900.
Installing configuring and troubleshooting Juniper EX switched (EX 2200,EX 2500,EX3200 series)
Worked on Juniper Routers like M320 and MX80, MX960, MX480 and configured OSPF BGP and route policies.
Provided technical assistance for enterprise solutions and cloud services.
Participated in migration of cloud clients within data centers.
Installed and configured World ox mobile and web solutions.
Managed and supported software integration projects in World ox.
Maintained email accounts, VPN user details and change requests.
Analyzed and resolved issues relating to PeopleSoft applications.
Created and updated user IDs and security group tasks.
Tested printer setups and supported custom applications.
Environment: Cisco 2948/3560/4500/3560/3750/3550/3500/2960 6500 switches and Cisco 3640/12000/7200/3845/3600/2800 routers, Cisco Nexus 7K/5K, Cisco ASA 500, F5 BIGIP LTM,RIP,OSPF,BGP,EIGRP,LAN,WAN,VPN,HSRP, JUNIPER EX 2200, Juniper EX 2500
Atlanta Gas light, Atlanta- GA Feb 2013 to June 2014
Sr. Network engineer
Responsibilities:
Involved in complete LAN, WAN, Extranet redesign (including IP address planning, designing, installation, pre configuration of network equipment, testing, and maintenance) in both Campus and Branch networks.
Experience working with MPLS Layer 3 VPN on ASR 9006 with IOS-XR.
Experience with converting Cisco 6500 IOS to Cisco Nexus NX-OS in the data center environment.
Experience working with Nexus 7010, 5020, 2148, 2248 devices.
Experience with configuring Nexus 2000 Fabric Extender (FEX) which acts as a remote line card (module) for the Nexus 5000.
Experience configuring VPC, VDC and ISSU Software upgrades on Cisco Nexus 7010.
Experience in configuring, upgrading and verifying the NX-OS operation system.
Experience with configuring OTV between the data centers as a layer 2 extension.
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.
Experience working with BGP attributes such as Weight, Local-Preference, MED and AS-PATH to influence inbound and out bound traffic.
Involved in Switching Technology Administration including creating and managing VLANs, Port security, Trunking, STP, InterVlan routing and LAN security.
Upgraded load balancers from Radware to F5 BigIP v9 which improved functionality and scalability in the enterprise.
Managed the F5 BigIP GTM/LTM appliances to include writing iRules, SSL offload and everyday task of creating WIP and VIPs.
Use and maintain routing protocols EIGRP, OSPF and BGP on the Routers in the network & also worked on BGP Route Reflectors, Confederations.
Deployed a large-scale HSRP solution to improve the uptime of collocation customers, in the event a core router became unreachable.
Configured and designed LAN networks with Access layer switches such as Cisco 4510, 4948, 4507 switches.
Experience with convert PIX rules over to the Cisco ASA solution.
Responsible for Cisco ASA firewall administration across our global networks.
Support customer with the configuration and maintenance of PIX and ASA firewall systems.
Design and configuring of OSPF, BGP on Juniper Routers and SRX Firewalls.
Configuring IPSEC VPN on SRX series firewalls.
Ability to plan independently and execute product testing with quality (White box, Black box testing, Scalability, performance, solution and system testing).
Configuring Virtual Chassis for Juniper switches EX-4200, Firewalls SRX-210
Implemented HSRP on the Cisco 2948G Layer 3 switches and EIGRP, OSPF on 2 Cisco 2610 routers, the Layer 3 switch, 3 Cisco 350XL Switches, Cisco 3524XL switches for load balancing and fail over.
Configuring ASA Firewall and accept/reject rules for network traffic.
Extensive knowledge and troubleshooting in data communication protocols and standards including TCP/IP, UDP, IEEE 802.3, Token Ring, Cable Modem, PPPOE, ADSL, Multilayer Switching, DoD standards.
Other responsibilities included documentation and supporting other teams.
Analyzed and resolved problems relating to cloud and virtualization products.
Documented detailed technical designs for cloud deployments.
Supported hosting sites and evaluated new cloud based technologies.
Environment:Cisco3750/3550/3500/2960 switches and Cisco 3640/12000/7200/3845/3600/2800 routers, Checkpoint, OSPF, BGP, VLAN, HSRP, LAN, WAN, IPV4, AS Firewall, Checkpoint, Nexus 7K/5K/2K.
Topps Company, NYC-NY Dec 2011 to Jan 2013.
Network Engineer
Responsibilities:
Designed and implemented Cisco VoIP infrastructure for a large enterprise and multi-unit office environment. Met aggressive schedule to ensure a Multi-office reconfiguration project which was successfully delivered
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
Supporting EIGRP and BGP based PwC network by resolving level 2 &3 problems of internal teams & external customers of all locations.
Upgrade Cisco Routers, Switches and Firewall (PIX) IOS using TFTP
Updated the HP open view map to reflect and changes made to any existing node/object.
Handled SRST and implemented and configured the Gateways, Voice Gateways.
Configuring HSRP between the 3845 router pairs for Gateway redundancy for the client desktops.
Configuring STP for switching loop prevention and VLANs for data and voice along with Configuring port security for users connecting to the switches.
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+.
Completed service requests (i.e. – IP readdressing, bandwidth upgrades, IOS/platform upgrades, etc.)
Identify, design and implement flexible, responsive, and secure technology services
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
Configured juniper ACX 1100, Cisco 3900 & 2900 routers and Cisco 4500 and 3750 catalyst switch using routing protocols such as OSPF and BGP also utilized juniper EX3200 Ethernet switch.
Configure and monitor the status of printers and other peripherals. Actively provide phone support for hardware and software to other colleagues and customers.
Set up and troubleshoot secured wireless access points (WAP) and wireless LAN controller (WLC) for broadband internet.
Carry out full installation of Cisco routers, switches and various hubs. Successfully engineered a virtual private network (VPN) solution utilizing Windows 2003 Server. Held responsibilities to configure, install and administer network infrastructure and telecommunication systems.
Environment: Net Flow,TACACS,EIGRP,RIP,OSPF,BGP,VPN,MPLS,CSM,SUP720, Ether Channels, Cisco 7200/3845/3600/2800 routers, Fluke and Sniffer, Cisco 6509/ 3750/3550/3500/2950 switches, Checkpoint firewalls(SPLAT).
Etios Tech, Hyderabad – India Aug 2009 – Sept 2011
Network Support 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
Cyber Net Solution, Hyderabad – India May 2008 - July 2009
Network Engineer
Responsibilities:
Provided Level 1 Support for Broadband Connection to Virgin Media customer
Worked As a Technical Support Executive under Virgin Media.
Received inbound calls of technical nature, independently resolved customer complaints, concerns and inquiries regarding their Internet connection.
Managed LAN and Wireless Network and performed troubleshooting On LAN, WLAN, Customer Modems (NTL 250, TERAYON, and MOTOROLA) And CPE Router (Cisco-Linksys, Belkin, D-LINK and Dynamode).
Set up Home Network and provided troubleshooting and full support on virgin- media security Software (PC-guard).
Troubleshoot a wide range of technical support issues and connectivity problems such as authentication, connection speed, e-mail configuration, and loss of synchronization.
IOS upgrades on catalyst series switches like 2900, 3560, 3750.
Troubleshoot TCP/IP problems and connectivity issues in multi-protocol Ethernet environment.
Implemented trunking protocols like 802.1q on 3750 switches.
Configured ACLs to provide accessibility and restrict unauthorized users.
Involved in maintaining STP, RSTP and PVST+ for the catalyst switches I worked on.
Configured and maintained RIP, OSPF and routing protocols on 2600 and 3600series Cisco routers.
Maintaining and troubleshooting of connectivity problems using Ping, Traceroute.
Assisted in racking and stacking.
Technical assistance for LAN/WAN management and customer issues.
Other responsibilities also included documentation.
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