SUMMARY

• As a Network Engineer Around 7yrs of Experience in designing and implementing multiple projects ranging from setting up new office networks to migrating end - of-life technology.
• Hands-on experience in providing network support, installation and analysis for a broad range of LAN/WAN/MAN communication systems.
• Strong Hands-on experience with configuring, troubleshooting and upgrading IOS-XR, NX-OS, Cisco ASA (5550/5580), Cisco Routers (ASR 9k, Cisco CRS-X, GSR) and Cisco Catalyst Switches(6500/7600).
• Knowledge of Data Center Design using Cisco Nexus 3k/5k/7k and troubleshooting of DNS, DHCP and virtual Port Channel.
• IP/Routing experience (OSPF, ISIS, BGP, MPLS TE, RSVP, LDP, MPLS L3 VPNs)
• Proficient in Cisco IOS configuration & troubleshooting protocols: OSPF, EIGRP, RIP, MPLS, MP-BGP, BGP v4, LDP.
• Knowledge of implementing and troubleshooting complex layer 2 technologies such as VLAN Trunks, VTP, Ether channel, STP, RSTP and MST. Implementation of HSRP, VRRP for Default Gateway Redundancy.
• Experience in testing cisco routers and switches in the lab and deploying them on site production.
• In-depth knowledge and hands-on experience in Tier II ISP Routing Policies, Network Architecture, IP subnetting, VLSM, TCP/IP, NAT, DHCP, DNS, FT1 / T1 / FT3 / T3 SONET POS OCX/GigE circuits, Firewalls.
• Responsible for Check Point and Cisco ASA firewall administration across global networks.
• Strong knowledge of RADIUS and TACACS+
• Experience in designing and deploying enterprise wide Network Security and High Availability solutions.
• Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500/PIX security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with firewalls as per design.
• Worked extensively on Cisco Firewalls, Cisco PIX (506E/515E/525/) & ASA 5500(5510/5540) Series
• Adept in preparing Technical Documentation and presentations using Microsoft Visio/Office
• Excellent customer management/resolution, problem solving and debugging skills. TEMPEffectively analyze results to deliver solutions individually and as part of a team.

TECHNICAL SKILLS

Routers: ASR 9000, Cisco CRS-X, 1800, 2500, 2600, 2800, 2900, 3200, 3600, 3700, 3800, 4000, 7600

Switches: Cisco Cat 2960, 3750, 4500 and Nexus 2K/3K/5K/7K series

Firewall: ASA (5550/ ), Check Point (R77/R76/R75/R60), Palo Alto (PA 500/3k/5k)

Load Balancers: F5 Networks (Big-IP) LTM, Cisco ACE 4710

LAN/ WAN: BGP, MPLS, L3/L2VPN, QOS, Frame Relay, PPP, HDLC, Ethernet, WLAN 802.11, T1/T3

Routing Protocols: ISIS, OSPF, EIGRP, RIP, BGP, Route Filtering, Redistribution, Summarization

Switching Protocols: STP, RSTP, PVST+, RPVST+, 802.1q, VLAN, VTP, ARP, Ether channels

Gateway Redundancy: HSRP, VRRP, GLBP

AAA Architecture: RADIUS, TACACS+, Cisco ACS

Miscellaneous: NAT, SNMP, Syslog, SMTP, HTTP, FTP, DNS, DHCP, IGMP, ICMP

Network Tools: Wireshark, Solar winds, Cisco Works, GNS3, TCP dump, OPNET

Languages: Python, SQL, Bash Scripting

Operating Systems: NX-OS, IOS-XR, Windows (Server 2003/08), OSX, Linux (Ubuntu, Kali, CentOS, Fedora)

PROFESSIONAL EXPERIENCE

Confidential, Bowie, MD

Network Engineer

Responsibilities:

• Design WAN structure to prevent single point of failure in case of a link failure
• Configured ASA 5500-X Series firewalls to provide highly secure and high performance connectivity between the site locations.
• Experience in maintenance and troubleshooting of connectivity problems using PING, Traceroute
• Planning and implementation of Subnetting, VLSM to conserve IP addresses
• Experience in configuring STP for loop prevention and VTP for Inter-VLAN Routing
• Configuration and troubleshooting of EIGRP, OSPF, and BGP
• Configuration of Standard and Extended ACLs for Security
• Provide technical assistance for LAN/WAN management and complex customer issues.
• Work on PIX firewalls to build ACL rules for extranet connectivity and implement rules on corporate firewalls.
• Monitored logs for issues.
• Configured and troubleshot Nexus 5k and 7k series.
• Responsible for managing the TFTP logs for VPN and firewall services.
• Troubleshoot VPN tunnel issues like SA, RSA, ISAKMP encryption and cleared/refresh VPN tunnel issues
• Perform IOS upgrades on Catalyst 6500, 3550, 2950, 1900 switches, and 3600, 2600 and 2500 routers
• Implement and configure routing protocols like EIGRP, OSPF, BGP and troubleshoot related issues.
• Monitor, manage and troubleshoot the network using Network Monitoring tools.
• Implement Network Security with Cisco IOS Feature Set, NAT, and Simple Network Management Protocol
• Involved in installing and configuring PIX 515E firewall
• Deal with DNS, DHCP troubleshooting and other IP conflict problems
• Implementation of name resolution using WINS & DNS in TCP/IP environment
• Installation of Windows 2003 & 2008 on Servers using VMware Virtualization software.
• Prepare the technical documentation using Microsoft Visio/Microsoft Office.

Environment: Cisco routers 3700, 3800, 7200, 7604, Cisco catalyst series Switches 2960, 3750, 3560, 6500, Nexus 5k, Nexus 7k, MPLS, Frame Relay, VRF, DSLAM, RIPv2, OSPF, BGP, IPSEC, VLAN, STP, VTP, HSRP.

Confidential, Rochester, NY

Network Engineer

Responsibilities:

• Configuration of EIGRP and OSPF as interior gateway protocol with route filtering and route redistribution.
• Extensive experience in configuring and implementing EIGRP, OSPF and BGP.
• Support the core network consisting of Cisco 7200 series routers running multi area OSPF
• Implement stub/Totally stub areas and various OSPF features like route-summarization and SPF throttling.
• Responsible for service request tickets generated by the helpdesk such as troubleshooting, maintenance, software upgrades, patches and fixes with all around technical support.
• Responsible for Data center Monitoring and Performance Tuning.
• Support EIGRP and BGP for problems of L2/L3 in internal teams & external customers.
• Collaborate amongst a group of Security Professionals to finalize consolidation of the DMZ Firewall Zone.
• Configuration and implementation of various Cisco Routers and Nexus 3k switches.
• Providing daily network support for national wide area network consisting of MPLS, VPN and point-to point site.
• DHCP implementation to automatically assign reusable IP addresses to DHCP clients.
• Design WAN link using PPP Multilink and by implementing Cisco WAAS
• Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Negotiate VPN tunnels using IPsec encryption standards and also configured and implemented site-to-site VPN, Remote VPN
• Configure STP for switching loop prevention and VLANs for data and voice along with configuring port security for users connecting to the switches
• Worked on commissioning and decommissioning of the MPLS circuits for various field offices
• Network cabling, dressing, labeling and troubleshooting various network drops onsite.

Environment: Cisco routers 1002, 2600, 2800, 7200, Cisco catalyst series switches 2950, 3700, 6500, Nexus 3k, OSPF, BGP.

Confidential, Rochester, NY

Network Engineer

Responsibilities:

• Configured and implemented various Cisco Routers and L2 Switches.
• Supported core network consisting of Cisco 7200 series routers running multi area OSPF.
• Configured EIGRP and OSPF as interior gateway protocols with route filtering and route redistribution.
• Implemented stub/Totally stub areas and various OSPF features like route-summarization and SPF throttling.
• Responsible for service request tickets generated by the helpdesk such as troubleshooting, maintenance, upgrades, patches and fixes with all around technical support.
• Troubleshoot for Private Network, Cisco Wireless Routers and TCP/IP configurations /VPNs.
• Configuring, Managing and Maintaining Networking Equipment’s such as Nexus 5000, 7000, Catalyst 6500.
• Configured Nexus 7010 including NX-OS Virtual Port Channels, Nexus port profiles, Nexus Version 4.2 and 5.0, Nexus VPC peer links.
• Developed good knowledge and skills in networking concepts, router and switch configuration with Cisco IOS, such as Nexus 5000, 7000, Catalyst 6500
• Involved in design and deploying various network security & High availability products like Cisco ASA and other security products.
• Managed Core network upgrade, Unified Communications & Identity Services Engine (ISE) deployment
• Support customer with the configuration and maintenance of ASA firewall systems
• Building campus network topologies with Layer 2 and Layer 3 technologies such as IP multicasting, IGMP/MLD, OSPF, STP, VLAN.
• Supporting EIGRP and BGP for problems of L2/L3 in internal teams & external customers
• Validate and testnetworktopologies dat will meet certification requirements.
• Perform offsitetestingat external customer labs to validate solutions.
• Work with offsite development team to communicate any issues dat arise during certification, perform root cause analysis to provide necessary information for resolution to issues.
• Responsible for assessing the existing network topology and propose an action plan to reduce the layer 2 loops on the network based on Nexus technology.
• Migration and installation of VPC's on Nexus 7K, 5K, 2K to get High availability on servers dat were not configured with dat functionality.
• Responsible for redesigning, integrating and installing on the existing network, 2 Nexus 7010, 4 Nexus 5548, and 8 Nexus 2248, in separate data centers
• Overall Network administration including QoS and traffic shaping across switched and routed networks, as it relates to VoIP.

Environment: Cisco catalyst series switches 7600/6500/2900, Cisco Nexus 5k/7k series switches, SolarWinds, Remedy, GNS3, Wire Shark

Confidential

Network Analyst

Responsibilities:

• Worked and collaborated with a Team of IP Telephony Specialists, supported them on a need basis.
• Configured routers using routing protocols such as RIP, OSPF and BGP.
• Configure site to site IPsec VPN to provide communication between the branch office and headquarters.
• Configure Client VPN technologies including Cisco’s VPN client via IPSEC.
• Configure Cisco voice over IP (VOIP) phones, and Telephony.
• Configure static routes, default routes, Frame Relay.
• Set up and troubleshoot secured wireless access points (WAP) and wireless LAN controller (WLC) for broadband internet.
• Provided security by using ACL, NAT.
• Involved in troubleshooting VLAN, RSTP,& Switch Trunk issues.
• Worked on replication between various domain controllers in Active Directory.
• Responsible for layer 2 security. Securely managed all switches and routers, and deployed a syslog server to allow proactive network monitoring.
• Configure IP allocation and subnetting for all applications and servers and other needs throughout company using VLSM addressing.
• SNMP network management using MRTG and Cisco works.
• Drawing Visio diagrams of the entire network and updating them.

Environment: Cisco Routers, Cisco Switches, Routing Protocols (RIP, BGP, OSPF), VPN Tunnels, Checkpoint Firewall, Frame relay, ACL, NAT, WAP, WLC, VLAN, RSTP, Active Directory, Tools (MRTG, Cisco Works).

Confidential

Network Engineer

Responsibilities:

• Configuration and installation of Cisco Routers 2900 series, 3800 series, 3900 series, 7200 series, 7600 series.
• Maintenance and installation of Cisco 2960, 2975, 3750-E, 4500, 6500 Series Catalyst Switches, Nexus 3k/5k.
• Performed switching technology administration including VLANs, Inter-VLAN routing, trunking, port aggregation in the LAN environment.
• Implemented redundancy using VRRP Protocol on Core and distribution router
• MPLS Configuration in Cisco 3845 Series Router for Layer 3 circuits.
• Implementation and configuration of Load balancer BIG-IP F5.
• Configuring and troubleshooting of Layer 3 routing protocols such as OSPF and BGP.
• Coordinated with Network Administrator regarding BGP/OSPF routing policies and designs, worked on implementation strategies for the expansion of MPLS VPN networks.
• Creating dedicated VLANs for Voice and Data with QOS for prioritizing VOICE over DATA.
• Designed QOS policies for critical applications based on business requirements and traffic patterns.
• Worked with Wireless Network Engineer in deploying and configuring Cisco 1300 Series access point for network connections.

Environment: Cisco Routers - 2900, 3800, 3900, 7200, Cisco Series Catalyst Switches - 2960, 2975, 3750-E, 4500, 6500, Nexus 3k/5k, Cisco Pix Firewall, ASA Firewall, MPLS, Frame-Relay, VOIP, OSPF, BGP, VLANS, STP, PAGP, VRRP, Port Security, VPN, Load balancers, Access list, Wire shark.