VAMSHI KRISHNA

acyfl3@r.postjobfree.com

267-***-****

Professional Summary

Possess 9 years Experience with designing, architecting, deploying and troubleshooting Network & Security infrastructure on routers, switches (L2/L3) & firewalls of various vendor equipment.

Extensive work experience with Cisco Routers, Cisco Switches, Load Balancers and Firewalls.

Expertise knowledge of switching and datacenter technologies 802.1d/w/s, VTP,FEX, TRILL, ACI.

Possess hands on experience on IP Packet analysis in a real time production Environment.

Configuring the setup with F5 virtual load balancer for customer application.

Experience in Cisco ISE’s, SNMP tools (HP – Intelligent management center, Solar winds, Wireshark)

Configured and maintained a variety of hardware from multiple vendors including

Brocade ICX series switches, Brocade MLX series Routers, as well as IBM G series switches

Excellent working knowledge of TCP/IP protocol suite and OSI layers

Posses Hands on experience working with HDS high end storage systems and storage technologies like storage switches and P9500.

Possess expertise knowledge on F5 API.

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

Experienced in DELL, HP servers hardware, EMC SAN, NAS, software, UPS and backup.

Possess experience in working with data center environment

Experience in layer-3 Routing and layer-2 Switching. Dealt with Nexus models like 7K, 5K, 2K series, Cisco router models like 7600,7200,6500, 3800, 3600, 2800, 2600, 2500, 1800, 810 series and Cisco catalyst 6500, 4500, 3750, 3500, 2900 series switches

Design and Install UCP Select for VMWare with Cisco UCS and Cisco Unified Fabric Switching.

Implemented security policies using ACL, IPSec, VPN, AAA Security TACACS+, and Radius on different series of routers and switches.

Experience in layer 2 securities which was implemented using a dedicated VLAN ID for all trunk ports, setting the user ports to non-trucking, deployed port security when possible for user ports.

Installation and Configuration of Cisco 6500, 4500, 2900, 3500 series switches, Cisco 2500, 2600, 2800, 3600,3700, 3800,7000, 7200 series Routers.

Hands on experience with F5 load balancers - LTM, GTM series like 6400, 6800, 5000, 2000 for the corporate applications

Design and configuring of OSPF, BGP on Juniper Routers (MX960, MX480) and JUNIPER SRX Firewalls (JUNIPER SRX240, JUNIPER SRX550)

Expertise in configuration of routing protocols and deployment of OSPF, EIGRP, BGP and policy routing over Cisco routers.

Experience with design and deployment of MPLS Layer 3 VPN, MPLS Traffic Engineering, MPLS QOS

Experience in adding Rules and Monitoring Checkpoint Firewall traffic through Smart Dashboard and Smart View Tracker applications.

Experience working with Cisco IOS-XR on the ASR9000 devices for MPLS deployments

Efficient designing of IP Addressing Scenario using VLSM and Sub netting.

Technical Skills:

Cisco Platforms

Nexus 9K, 7K, 5K, 2K, Cisco routers (7600,7200, 3900, 3600, 2800, 2600, 2500, 1800, 810 series) Cisco Catalyst switches (6500, 4900, 3750,3700, 3500, 4500, 2900 series)

CISCO 5500 WLC, CISCO ISE

Juniper Platforms

JUNIPER SRX, MX, EX Series Routers and Switches

Networking Concepts

Access-lists, Routing, Switching, Subnetting, Designing, CSU/DSU, IPSec, VLAN, VPN, WEP, WAP, MPLS, Bluetooth, Wi-Fi

Firewall

ASA Firewall (5520/5540/5585), PIX and FWSM

Network Tools

Solar Winds, SNMP, Cisco Works, Wireshark, QRadar, Zenoss, NCM, Algosec, Voyence, Netscout, InfoBlox, Wireshark, ASDM, XenApp, netbrain

Load Balancers

F5 BIG IP LTM 5000, GTM C-112, VIPRION VPR 2400

WAN technologies

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

LAN technologies

Ethernet, Fast Ethernet, Gigabit Ethernet, & 10 Gigabit Ethernet, Port- channel, VLANS, VTP, STP, RSTP, 802.1Q

Security Protocols

IKE, IPSEC, SSL-VPN

Networking Protocols

RIP, OSPF, EIGRP, BGPv4,LACP, STP, RSTP, HTTP, HTTPs, LDP,VLANs, VTP, PAGP, MPLS, HSRP,FTP, VRRP, GLBP, SSL,TACACS+, Radius, AAA

Operating System

Windows 7/XP, MAC OS X, Windows Server 2008/2003, Linux, Unix,

EDUCATIONAL DETAILS:

Bachelor’s of Technology in Computer Science and technology from JNTU

CERTIFICATIONS :

CCNP

Master Card, St. Louis, MO Nov 2014 - Current

Sr. Network Engineer

Responsibilities:

Responsible for designing and implementation of customer's network and Security infrastructure.

Possess experience as an architect in deploying and managing security solutions like Cisco ISE and ACS.

Involved in working with Brocade MLX 32 ROUTERS, Brocade ICX 7250-24P switch.

Experience working with Juniper Routers (MX960, MX480, M320) and Switches (EX2400, QFX Virtual Chassis Switches) with BGP, OSPF, STP, MST layer 2 and layer 3 Technologies.

Involved in working with ACI to accelerate the entire application deployment lifecycle.

Configured the VLANs, Hot Standby Routing Protocol (HSRP), Gateway Load Balancing Protocol (GLBP), GRE tunnels, access lists, and SPAN.

Possess expertise knowledge in F5 TMOS architecture.

Managed fast Layer 3 switched/routed LAN/WAN infrastructure as a part of Network team. The LAN consisted of Cisco campus model of Cisco 3550 at access layer, Cisco 6513 at distribution/core layer.

Implementing and Managing VPN Networks of the Customer through Checkpoint firewalls.

Involved in installation and configuration of Palo Alto infrastructure.

Involved in working with QOS to manage User Data Protocol(UDP) traffic

Involved in working with Citrix servers to deliver window’s applications to PC’S.

Designed the L3 logical network diagrams like routers, Firewalls, VPN devices and DNS servers using the VISIO.

Involved in working with HDS WAN optimizer to enable acceleration of replication and back up operations with data movement to and from cloud storage.

Interactions with InfoBlox (a DNS, DHCP, IPAM appliance) updating DNS & DHCP configurations within multiple network views through InfoBlox and MS DNS/DHCP consoles.

Configuring VMware environment on Cisco UCS servers, hp blade servers and dell vrtx servers.

Hands On experience Cisco IOS/IOS-XR/NX-OS, Juniper JUNOS for configuration & troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, BGP v4, MPLS.

Responsible for installation, configuration and troubleshooting of 200+ node environment consisting of Juniper Net screen firewalls Palo Alto firewalls, Palo Alto Panorama.

Involved in configuring the cisco security devices.

Lead engineer to manage Palo Alto firewalls rules, black list white list, URL database and content filters

Involved in design, installation, configuration, maintenance and administration checkpoint firewall R55 up to R77 version.

Involved in working with SNMP to collect and organize information about managed devices on IP networks.

Configured VLANs with 802.1 q tagging. Configured Trunk groups, ether channels, and Spanning tree for creating Access/distribution and core layer switching architecture.

Involved in the configuration & troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, BGP v4. Configured IP access filter policies

Experience working with ASR 9006 with IOS-XR

Maintaining effective communications with vendors, peers and clients in resolution of trouble tickets, equipment RMAs and support request.

Neuberger Berman, Newyork, NY Dec2012 - Oct2014

Network Engineer

Responsibilities:

Experience with designing, implementing and troubleshooting Cisco routers and switches using different routing protocols like OSPF, EIGRP, BGP, ISIS and MPLS L3 VPN, VRF

Experience with converting Cisco 6500 IOS to Cisco Nexus NX-OS in the data center environment.

Implementing and Managing Nokia (IPSO), Checkpoint (Splat, GAIA) Physical and VSX virtual Firewalls.

Involved in working with QOS to provide administrators a control over network resources and allows them to manage the network.

Implemented and Configured Palo Alto Networks Firewall models and centralized management system to manage large scale firewall deployments.

Posses experience with Cisco Wireless, ACS configuration and implementation.

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 in packet analysis using wireshark to solve the network issues.

Involved in working with Brocade 6910 ethernet access switch.

In depth knowledge of IPv4 & IPv6 addressing .

Migrating IPSO Checkpoint Firewalls to R77.10 based Virtual firewalls (VSX) globally.

Involved in working with Cisco routers ASR1002, ASR1004,3800,3900,7600.

Using SAN over fibre optic creating luns and configuring them to VM’s.

Involved in working with Citrix receiver to access applications and desktops.

Experience configuring VPC, VDC and ISSU Software upgrades on Cisco Nexus 7010

Experience in Configuring, upgrading and verifying the NX-OS operating system.

Actively involved in Switching Technology Administration including creating and managing VLANS, Port security- 802.1x, Trunking 802.1Q, RPVST+, Inter-VLAN routing, and LAN security on Cisco Catalyst 4507R+E, 6509-E and Nexus 2232, 5596, 7009 switches.

Configuring IPSEC VPN on JUNIPER SRX series firewalls

Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500 security appliance, Failover DMZ zoning & configuring VLANs/routing/NATing with the firewalls as per the design.

Involved in working CIDR protocol for a single IP address that can be used to designate many unique IP addresses.

Provided Load Balancing towards access layer from core layer using F5 Network Load Balancers.

Experience in adding Rules and Monitoring Checkpoint Firewall traffic through Smart Dashboard and Smart View Tracker applications.

Possess hands on experience working with Cisco IOS Software and NX OS Software.

Managed the F5 Big IP GTM/LTM appliances which includes writing iRules, SSL offload and everyday task of creating WIP and VIPs

Experience working with BGP attributes such as Weight, Local-Preference, MED and AS-PATH to influence inbound and out bound traffic.

Configured VPN and GRE tunnel on VXR 7201, 1841, 2911, and 2811

Involved in Disaster Recovery activity, like diverting all the traffic from production data center to Disaster Recovery data center.

Strong hands on experience on ASA (5525/5545/5585) Firewalls. Implemented security policies using ACL, Firewall, IPSEC, SSL, VPN, IPS/IDS, AAA (TACACS+ & RADIUS)

United Health Group, Orlando, FL May 2010- Sept2012

Network Administrator

Responsibilities:

Network Administrator responsible for the full Planning, designing, installation and administration of the Corporate WAN (wide Local area network).

Configuration, Management, Troubleshooting of Network devices (Routers, Switches, Firewalls, Servers, DSL Modems etc.).

Successfully installed Palo Alto PA 3060 firewalls to protect Data Center and provided L3 support for routers/switches/firewalls.

Involved in working with IPv6 to support source and destination addresses that are 128 bits.

Experience working with Brocade ICX 7450-48P Switch.

Responsible for solving the Problems in Nokia and Checkpoint Firewalls.

Possess experience in working with QoS to provide a better service to the network traffic

Involved in working with Linux operating systems.

Worked on Routers Cisco 2620, Cisco 3750, and Cisco 2950 Switches & Link sys wireless access points. Involved in design and implementation of Data Center Migration, worked on implementation strategies for the expansion of the MPLS VPN networks

Installed and configured four PIX 525 and two ASA 5505 in customer locations. In addition to that, configured two PIX firewall for the Guest access .

Created the VLAN Id’s, network address and subnet mask using VISIO.

Maintained complex LAN/WAN networks with several VLANS and provided support for routing protocols. OSPF, RIP, IGRP, RIPv2, EIGRP, Static and default route.

Configured and troubleshoot VLAN, VTP, STP, RSTP and Trunks

V Experience in migration of Frame-relay based branches to MPLS based technology using multilayer stackable switch like 6500 series and 2800 series router.

Involved in working with Windows Server 2003, to provide the QoS Packet Scheduler to schedule and shape the traffic flows.

Performed troubleshooting, while maintaining trouble ticket tracking, following internal/external escalation procedures and customer notifications. Configured Cisco Routers for OSPF, RIP, IGRP, RIPv2, EIGRP, Static and default route

Worked on HSRP and GLBP for first hop redundancy and load balancing

Installed and configured PIX 520, 525, 535 series firewalls, configured standard and extended access -lists and policy- based filters

Configured the Cisco router as IP Firewall and for NATting

Configured ASA 5510 appliance as a Firewall and as a VPN server.

Configured Virtual Switching System (VSS) and Gre Tunnels.

Implemented SNMP on Cisco routes to allow for network management. Completed the installation and Configuration of CSU/DSU, T1, T3 & OC3 circuits

Possess Hands on experience in Cisco UCS server.

Experience in monitoring tools like MRTG, Cacti, Nagios.

Troubleshoot TCP/IP problems; troubleshoot connectivity issues.

Sears Holding, Hoffman Estates, IL March 2009 – April 2010

Network Engineer

Responsibilities:

Manage installations, configuration and administration of Cisco equipment in IT architecture of organization

Configure IT LAN/WAN elements and held responsibility of maintaining and monitoring performance of network

Experience in adding Rules and Monitoring Checkpoint Firewall traffic through Smart Dashboard and Smart View Tracker applications.

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.

Provide technical support, assisting users facing network problems. Perform advanced troubleshooting, diagnostics and provide level-1 solutions to network failures

Design the layout for cable installations

Troubleshoot and resolved dynamic routing, Ethernet switching and host connectivity issues in a window and network environment

Troubleshoot wiring problems and serial communication lines

Develop, plan and maintain documentation necessary for operation in support of LAN to WAN connectivity

Designed the wireless network diagrams using VISIO.

Extensive knowledge and troubleshooting in data communication protocols and standards including TCP/IP, UDP/IP, IEEE 802.3, Token Ring, Cable Modem, PPPOE, ADSL, Multilayer Switching, DoD standards.

Experience working with OTV & FCOE on the Cisco Nexus 7010/5548 between the datacenters. And Gigabit Ethernet channel between switches

Experience in Cisco switches and routers: Physical cabling, IP addressing, Wide Area Network configurations (Frame-relay and ATM)

Model network capacity for failure scenarios to proactively predict routing, topology changes and CRAN services.

Monitoring network traffic using tools like ZENOSS, CISCO NCM, NETSCOUT and QRADAR.

Working on various incident tickets using HPSM and Citrix XenApp (CLARIFY ticketing system).

Creating Private VLANs & preventing VLAN hopping attacks & mitigating spoofing with snooping & IP source guard

Ajel Technologies, Hyderabad, India July 2007 – Feb 2009

Linux/Unix/Network Admin

Key contributions include troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF & BGP.

Secured network access with Cisco Secure (RADIUS/ TACACS+).

Migration of existing IPSEC tunnels from Pre-Shared key to Certificate Authority for purpose of scaling.

Maintained and updated technology documentation.

Secured Internet connections using Cisco IOS IPS perimeter routers.

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.

Support Complex 6500 /5500 Series Switches.

Worked on Cisco Routers Models# 2600-2800 and ISR model;

Planning and configuring the routing protocols such as OSPF, RIP, and Static Routing on the routers.

Responsible for creating and maintaining network documents and VISIO drawings for efficient network operations and Audit requirement.

Assist the certification team and perform configuration of LAN\WAN technologies such as Ethernet, Fast Ethernet, and Gigabit Ethernet.

Troubleshoot network problems using Packet Analysis tools like Ethereal.

Maintaining redundancy on Cisco 2600, 2800 and 3600 router with HSRP.

Monitoring the routing traffic using Cisco 2000 and Wire shark.

Creation of documentation and reporting tools using SQL codes, MS- Word, Excel, Access, SQL Server Integration Services (SSIS) and SQL Server Reporting Services (SSRS)

Configure Multi-Protocol Label Switching (MPLS) on Cisco IOS XR Software

Participate in all technical aspects of LAN, WAN, VPN and security internetworking projects including, short and long term planning, implementation, project management and operations support as required.

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