SUMMARY:

• An enthusiastic and hardworking network professional with an experience of 8 years in facing and successfully completing the challenges put forth to me in the networking field.
• Excellent working experience on Nexus 2232, 2248, 5548P,56128P, 5596T, 7009, 7706,7710 switches
• Proficient expertise in deploying, designing, troubleshooting and administering data networks for organizations.
• Experience in configuring and administering the switch block in data center that involves the Nexus 2000 series fabric - extenders, 5000 series fabric Interconnects and 7000 series core switches
• Experience in skillful deployment of Layer-2 technologies like VLANS, VTP, STP, RSTP, Inter-VLAN routing, VLAN Trunking, Ether Channels, VLAN access-maps and port security.
• Experience with working on latest cisco switches like Nexus 2000, 5000, 6000 and 7000 series switches while implementing advanced features like VDC, VPC, OTV and Fabric Path.
• Profound knowledge in deploying routing protocols like OSPF, BGP, EIGRP, RIP on Cisco routers like 2600, 2900, 3600, 3900, 7200 and 7600 series.
• Having in depth knowledge on ASA, Checkpoint firewalls providing security to the organization
• Working expertise in troubleshooting, optimizing and documenting LAN/WAN technologies and T1/T3 WAN technologies.
• Expertise in configuring of SSH, TFTP, FTP, DNS, DHCP and Syslog.
• Knowledge gained by working on Cisco firewall technologies like ASA 5580, AAA with cisco ACS.
• Efficient in configuring and implementing load balancers like F5 BIG-IP LTM, GTM series like 3900, 6900, 8900 and cisco CSM.
• Experience in implementing network security using NAT, PAT, ACL, IDS, IPS and ASA firewalls.
• Hands-on experience in deploying frame-relay, GRE tunnels, Remote Access VPN and Site-to-Site VPN.

TECHNICAL SKILLS:

LAN Technology: Ethernet, Frame relay, Gigabit Ethernet

Switches: Cisco catalyst 2900,2960,3560,3750,4500,4900,6500, Nexus 2000,5000,6000 and 7000 series

Switching: ARP, GARP, 802.1q, VLAN, VTP, STP (802.1d), RSTP (802.1w), PVST, RPVST and Ether-channels.

Routers: Cisco 2600, 2900, 3600, 3900, 7200 and 7600 series

Routing Protocols: OSPF, BGP, EIGRP, RIPV2

WAN Technology: Frame relay, HDLC, PPP and E1,T1,E3& T3

Gateway Redundancy: HSPR, VRRP& GBLP

Firewall Technology: Cisco ASA 5580 series, Juniper SRX3600 and PA-5050

Network monitoring and management tools: Wireshark, Infoblox and Solarwinds

AAA architecture: TACACS+, Radius, Cisco ACS

Load Balancer Technology: F5 BIG-IP LTM, GTM & CISCO CSM

Other Protocols: DNS, DHCP, SNMP, NAT

PROFESSIONAL EXPERIENCE:

Confidential, Plano, TX

Network Engineer

Responsibilities:

• Performing standard network operations via ITIL standard with Incident Management and Change Management.
• Configuring and managing layer-2 technologies like VLANs, STP, VTP & port-security.
• Providing gateway redundancy using HSRP & creating ACL for layer-3 security.
• Configuring and troubleshooting layer-3 routing protocols like OSPF, EIGRP & BGP.
• Involved in vulnerability assessment tests for our data center infrastructure via Nessus tool
• Creating IP-prefix-list, route-map, offset-list and distribution list for performing route manipulations.
• Creating BGP multi-homed network using BGP attributes like AS-PATH, MED and local-preference as per the environment.
• Migrated catalyst 45XX and 65XX switches to Nexus 7000 switches, where 7018 being the core and 5000, 2000 as the distribution layer switches for data center requirements.
• Performed Enterprise refresh on Switch block that involved replacing legacy catalyst devices with Cisco NEXUS 2000 series fabric-extenders, 5000 series Fabric Interconnects and Nexus 6000, 7000 series core switches. Implemented features like VPC, VDC, OTV and Fabric Path for high availability and redundant server farm environment.
• Worked with Sup 2E for 7018 switch and F cards for L2 switching and few M cards for L3 proxy routing purposes for F cards.
• Worked with Nexus 6001T switch which is used for low- port-to-port latency in the data center using cut-through feature architecture. And configured VPC+ on these switches along with Nexus 2200 Fabric extenders.
• Worked on OTV to extend L2 VLANs between data centers over IP on Nexus 7018 switches.
• Also involved in code upgrade during work windows on Nexus 7K and ASR 9K. Conducting prechecks and post checks to make sure there are no issues after code upgrade process
• Configured IPSEC Site-to-Site VPNs to provide secure remote access to vendors and partners using SPA modules on Cisco 6500.
• Worked on commissioning WAN links and troubleshooting WAN outages
• Deployed Cisco 6500 series switches with SUP32 & SUP720 and, implemented VSS.
• Maintained checkpoint 41000 and 61000 systems, juniper SRX3600 and PA-5050 firewalls
• Worked on Enterprise application load balancing using F5 BIG-IP LTM 6400 and Cisco CSM.
• Worked with application and system teams to investigate application high availability requirements to deploy the optimum Load Balancing mechanism and provided network-oriented support for end-to-end application life cycle management.
• Worked on Firewall rule management as part of network operations to take care of Firewall ACL requests. Maintained ASA 5580 to ensure high end security on the network with ACLs and Firewall. I also performed firewall troubleshooting to resolve application issues in DMZ and server farm.

Confidential, Plano, TX

Network Engineer

Responsibilities:

• Troubleshooting day-to-day switching issues with VTP and trunking protocols (like 802.1q and ISL) on catalyst 3560, 3750 and 4500 switches.
• Involved in the Team of Data Center Operations to perform duties like change management of Cisco Routers and Switches according to the organization requirements
• Handled responsibilities of providing 24x7 networking support in production environment
• Installation, Maintenance, Troubleshooting Local and Wide Areas Network (ISDN, Frame relay, NAT, DHCP, TCP/IP).
• Configured 10Gig. Checkpoint Firewall infrastructure with R77.30 and R80 code for all the sync. interfaces and cluster interfaces
• Participated in on call support in troubleshooting the configuration and installation issues.
• Maintained High availability on Cisco 2600, 2800 and 3600 router with HSRP.
• Responsible for creating extranet VPNs on firewalls to facilitate third party communication from our head office to various WAN sites.
• Performed Network Security Assessment and implemented security improvements such as network filtering, SSH, AAA, SNMP access lists, VTY access lists, EIGRP MD5 authentication, and HSRP authentication.
• Optimized checkpoint firewall rule base by working on Tufin tool.
• EIGRP & OSPF routing protocol configuration and administration and redistribution.
• Involved in management of ASA firewalls which also includes replacing faulty unit without interruption to production traffic.
• Maintained TCP/IP problems troubleshoot connectivity issues in multi-protocol Ethernet environment.
• As part of Network operations, worked on multiple tickets as per priority and severity levels.
• Performed security operations by adding rules in firewalls and pushing firewall policy as per the incidents and rules requests from users.
• Performed firewall troubleshooting by analyzing rules and traffic flow on Cisco PIX.

Confidential

Network Engineer

Responsibilities:

• Performed IOS upgrades/Password recovery on Catalyst 1900, 2900 series switches and 2500, 2600 series routers.
• Did racking, stacking, and cabling network-based, IT systems
• Configured Access List ACL (Std., Ext, Named) to allow users all over the company to access different applications and blocking others.
• Configuring of IP Allocation and sub netting for all applications and servers and other needs throughout company using FLSM, VLSM addressing.
• Troubleshot the issues related to L1 and L2 levels.
• Network maintenance checks, configure and manage printers, copiers, and other miscellaneous network equipment.
• Involved in trouble shooting of DNS, DHCP and other IP conflict problems.
• Responsible for Data Backup, System Update, Recovery and Restore, and Spyware removal.
• Assisting Junior and Senior Engineers, on-site management of cable-wiring technicians
• Troubleshoot problems on a day to day basis and documented every issue to share it with design teams.
• Providing documentation by creating MOPs and VISIO diagrams for the network designing team