Summary:

• CCNP and CCNA certified - 7 years of professional experience in Network Planning, Implementing, Configuring, Troubleshooting and Testing of networking system
• Expertise in network protocols, Firewalls and Communication Network design.
• In-depth Cisco technology experience/knowledge in design, implementation, administration and support
• Dealt with monitoring tools like ( Solar Wind, Kiwi-cat tool), network packet capture tools like Wire-shark
• Provided 24x7x365 availability and on-call support as required
• Excellent working knowledge of TCP/IP protocol suite and OSI layers
• Strong hands on experience on PIX (506, 515, 525, 535), ASA (5505/5510) Firewalls.Implemented security policies using ACL, Firewall, IPSEC, SSL, VPN, IPS/IDS, AAA(TACACS+ & RADIUS)
• In-depth knowledge of deploying and troubleshooting LAN, WAN, Frame-Relay, Ether-channel, IP Routing Protocols - (RIPV2, OSPF, EIGRP & BGP), ACL\'s, NAT, VLAN, STP, VTP, HSRP & GLBP
• Strong hands on experience in layer-3 Routing and layer-2 Switching. Dealt with Nexus models like 7K, 5K, 2K series, Cisco router models like 7200, 3800, 3600, 2800, 2600, 2500, 1800 series and Cisco catalyst 6500, 4500, 3750, 3500, 2900 series switches
• Dealt with the escalation problems for Routing, Switching and WAN connectivity issues using ticketing system remedy
• Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools
• 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
• Effective inter-personal skills, adaptive to any environment, keep abreast with the latest technologies and delivering solutions as an individual and as part of a team.

Professional Certifications:

• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)

Technical Skills:

Cisco & other vendor equipment Nexus 7K, 5K, 2K & 1K, Cisco routers (7200, 3800, 3600, 2800, 2600, 2500,
1800 series) & Cisco Catalyst switches (6500, 4900, 3750, 3500, 2900 series). PIX
Firewall (506/515/525/535), ASA Firewall (5505/5510), F5 Load Balancer

Routing Protocols RIP, IGRP, EIGRP, OSPF, IS-IS, BGP, HSRP, VRRP & GLBP

Infrastructure services DHCP, DNS, SMTP, FTP, TFTP

LAN technologies Ethernet, Fast Ethernet, Gigabit Ethernet, & 10 Gigabit Ethernet, Port-
Channel, VLANS, VTP, STP, RSTP, 802.1Q

WAN technologies Frame Relay, ISDN, ATM, MPLS, leased lines & exposure to PPP, DS1, DS3, OC3,
T1/T3 & SONET

Network Security NAT/PAT, Ingress & Egress Firewall Design, VPN Configuration, Internet Content
Filtering, Load Balancing, IDS/IPS, URL Filtering -Web-sense, Kiwi Syslog Server
Logging, SSL, IPSEC, IKE, Static, Dynamic, Reflexive ACL, and authentication AAA
(TACACS+ & RADIUS)

Network Management SNMP, Cisco Works, Kiwi-cat, WhatsUp Gold, Ethereal

Platforms Cisco IOS(11.x, 12.x), PIX IOS(6.x, 7.x), CAT-OS, UNIX, LINUX, Windows

Programming C, C++, HTML, Perl

Documentation MS Office, MS Visio
Academics:

• Bachelors in Electronics and Communication

Professional Experience:

Confidential, Vernon Hills, IL Duration: July 2009 - Present
Sr. Network Engineer

Environment: In Corporate office architecture with highly reliable & secured network including Cisco routers (7200, 3800, 2800) and Cisco switches (6500, 3700, 4900, 2900), Nexus(7K, 5K & 2K) Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP, GLBP,HSRP), Cisco PIX(525, 535), ASA(5505, 5510) firewall

Responsibilities:

• Implemented Site-to-Site VPNs between ASA Firewall and Router
• Migration of existing IPSEC VPN tunnels from Pre-Shared key to Certificate Authority for purpose of scaling
• Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256 with PIX Firewalls
• Network Redesign for branches/Campus Locations. This includes changes to both the data and Voice environment.
• Replace branch hardware with new 2851 routers and 2960 switches.
• Conversions to BGP WAN routing. Which will be to convert WAN routing from OSPF to BGP (OSPF is used for local routing only) which involves new wan links.
• Convert Branch WAN links from TDM circuits to MPLS and to convert encryption from IPSec/GRE to GetVPN.
• Responsible for the Global engineering and support of existing network technologies / services and the integration of new network technologies / services
• Key contributions include troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF & BGP
• Substantial lab testing & validation prior to implementation of Nexus 7K, 5K & 2K connecting to blade servers
• Secured network access with Cisco Secure (RADIUS/ TACACS+)
• Configured network access servers for AAA Security
• Performed basic security audit of perimeter routers, identifying missing ACL's, writing and applying ACL's
• Responsible for layer 2 securities which was implemented using a dedicated VLAN ID for all trunk ports, setting the user ports to non-trunking, deployed port security when possible for user ports
• Enabled STP attack mitigation (BPDU Guard, Root Guard), using MD5 authentication for VTP, disabling all unused ports and putting them in unused VLAN and ensuring DHCP attack prevention where needed
• Implement and configured GLBP (on core switching and also for VPN redundancy), HSRP on different location of office on the switched network and managing the entire multilayer switched network
• Used Kiwi-Cat tools to manage configurations from desktop for network devices, including routers, switches and firewalls. Generate network device configuration reports, such as port, MAC, APR and version details
• Enabled continuous Layer 2 monitoring with Solar Winds, so that each site can run independently until connectivity is restored
• Responsible for managing activities, Upgrading IOS - Upgrading hardware and installing new devices, Tuning (Configuration), make standardization for the topology
• Installation & configuration of Microsoft Proxy Server 2.0
• Configured, installed, & managed DHCP, DNS, & WINS servers
• Carried out performance monitoring & documentation of relevant network segments to ensure data integrity & environmental safety
• Provide front end on-call network support 24x7x365 for all network infrastructures in the co-operation

Confidential, Snoqualmie, WA Duration: Feb 2007 - June 2009
Network Administrator

Environment: Router series (2800, 3800, 7200) and switch series (3750, 3550, 4509E ,6509E), Cisco PIX(525, 535), ASA(5505, 5510) firewall, Routing Protocols (EIGRP, OSPF, BGP), Switching protocols (VTP, STP), Site to Site VPN, Remote Access VPN, Cisco VPN 3000 Concentrator, Cisco ACS 4.x

Responsibilities

• Experience in migrationof Frame-relay based branches to MPLS based technology using multi layer stackable switch like 6500 series and 2800 series router
• Involved in design and implementation of Data Center Migration, worked on implementation strategies for the expansion of the MPLS VPN networks
• Involved in designing L2VPN services and VPN-IPSEC authentication & encryption system.
• Experience in HSRP standby troubleshooting & Experience in configuring & upgrading of Cisco IOS
• Installation, Configuration and troubleshooting Cisco switches and Firewall on multi mode context based environments
• 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
• Installed and configured the Cisco routers 2800 in two different customer locations. It includes coordinating with Verizon and AT & T in order to bring the serial interface up for T3 link. Also, configuration includes frame relay, BGP and VPN tunnel on GRE
• VLAN Configurations, troubleshooting and Firewall ACLs and Object-Groups configuration and support
• Configured IPSec site-to-site VPN connection between Cisco VPN 3000 Concentrator and Cisco 3800 Router/ Microsoft VPN Server in order to access certain limited network resources from customer locations
• Installed and configured four PIX 525 and two ASA 5505 in customer locations. In addition to that, two PIX firewall configured for the Guest access
• Managing a TACACS server for VPN user authentication and network devices authentication
• Handled Corporate and Review Audits from the perspective of IT Security for Network Devices and Servers under our control
• This includes Artifacts for regular Health Checks, IP and System Integrity, Change management, Problem management, Logical Access Controls, Network Connectivity.
• Created engineering configuration, Security Standards, documenting processes and Network documentation using Microsoft Visio
• Managing health check of Network devices this is involves upgrading IOS on every quarter after checking the vulnerability of IOS and reviewing the configuration
• Installation, Configuration and Administration of ADS,DNS,DHCP and Web proxy(ISA)server
• Upgrade Cisco Routers, Switches and Firewall (PIX) IOS using TFTP
• Manage Cisco Routers and troubleshoot layer1, layer2 and layer3 technologies for customer escalations
• Taking Regular backups & testing the backups by restoring in test lab frequently

Confidential, Hyderabad Duration: Jan 2006 - Jan 2007
Network Engineer

Environment: In Corporate office architecture withhighly reliable & secured network including Ciscorouters(7200,3800,2800), Cisco switches(4900,2900), Cisco ASA Firewall(5510), Routing Protocols(EIGRP, RIP, BGP), Switching protocols(VTP,STP,GLBP)
Responsibilities

• Managed network connectivity and network security, between Head offices and Branch office
• Responsible for Internal and external accounts and, managing LAN/WAN and checking for Security Settings of the networking devices (Cisco Router, switches) co-coordinating with the system/Network administrator during any major changes and implementation
• Responsible for the installation, configuration, maintenance and troubleshooting of the company network. Duties included monitoring network performance using various network tools to ensure the availability, integrity and confidentiality of application and equipment
• Installation & configuration of Cisco VPN concentrator 3060for VPN tunnel with Cisco VPN hardware & software client and PIX firewall
• Configured Firewall logging, DMZs & related security policies & monitoring
• Creating Private VLANs & preventing VLAN hopping attacks & mitigating spoofing with snooping & IP source guard
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems
• Implementation of name resolution using WINS & DNS in TCP/IP environment
• Configured FTP server for inside/outside users & vendors
• Implemented the security architecture for highly complex transport and application architectures addressing well known vulnerabilities and using access control lists that would serve as their primary security on their core & failover firewalls
• Used various scanning and sniffing tools like Wire-shark
• Enabled STP Enhancements to speed up the network convergence that include Port-fast, Uplink-fast and Backbone-fast

Confidential, Duration: Oct 2004 - Dec 2005
Jr. Network Administrator

• Configured network access servers and routers for AAA Security (RADIUS/ TACACS+)
• Worked on Cisco routers 7200, 3800, 2800 and Cisco switches 4900, 2900
• Key contributions include troubleshooting of complex LAN/WAN infrastructure that include
• Routing protocols OSPF, RIP & BGP
• Configured BGP for CE to PE route advertisement inside the lab environment
• Spearheaded meetings & discussions with team members regarding network optimization and
• regarding BGP issues
• Implemented the concept of Route Redistribution between different routing protocols
• Switching related tasks included implementing VLANS, VTP, STP and configuring on Fast Ethernet
• Channel between switches
• Responsible for configuring GLBP between multilayered switch networks
• Installed and configured Cisco ASA 5500 series firewall and configured remote access IPSEC VPN on Cisco ASA 5500 series
• Responsible for Configuring SITE_TO_SITE VPN on Cisco ASA 5500 series firewall between Head office and Branch office
• Hands on Experience working with security issue like applying ACL's, configuring NAT and VPN
• Documenting and Log analyzing the Cisco ASA 5500 series firewall
• Responsible for Internal and external accounts and, managing LAN/WAN and checking for Security
• Settings of the networking devices (Cisco Router, switches) co-coordinating with the system/Network administrator during any major changes and implementation
• Configured AAA with TACACS+ server
• Configured Remote Access Servers with Frame Relay, Leased Line circuits
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems. Implementation of name resolution using WINS & DNS in TCP/IP environment
• Administration of Cisco 11.x and 12.1 versions and higher
• Involved in SNMP Network management. Worked on various scanning and Sniffing tools like Ethereal
• Upgrades and backups of Cisco router configuration files to a TFTP server
• Implementing and maintaining backup schedules as per the company policy

References: Available upon Request