Engineer Network
Resume:
Sathish Dobbala
Sr.Network Engineer
****@*******.***
Professional Summary:
7+ years of experience in Networking Engineering, As a Network Engineer I have design and implemented multiple projects related to new branch networks, Migration and End of Life Technology.
Including hands-on experience in providing network support, installation and analysis for a broad range of LAN/WAN/MAN communication systems.
Involved Knowledge on Data Center Design with Cisco Nexus in troubleshooting of DNS, DHCP and other IP conflict problems.
Switches and Virtual Port Channel
Proficient in Cisco IOS for configuration & troubleshooting of routing 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 laboratory and deploy 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.
Efficient in VOIP and Cisco Phone System
Responsible for Checkpoint and Cisco ASA firewall administration across global networks.
Strong knowledge of TACACS+.
Experience in designing and assisting in deploying enterprise wide Network Security and High Availability Solutions for ASA.
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.
Worked on Extensively on Cisco Firewalls, Cisco PIX (506E/515E/525/) & ASA 5500(5510/5540) Series
Experience with convert Checkpoint VPN rules over to the Cisco ASA solution. Migration with both Checkpoint and Cisco ASA VPN experience.
Adept in preparing Technical Documentation and presentations using Microsoft VISIO/Office
Excellent customer management/resolution, problem solving, debugging skills and capable of quickly learning, effectively analyzes results and implement and delivering solutions as an individual and as part of a team.
Technical Knowledge on Cisco ASA 5500 series Routers.
Strong hands on experience in installing, troubleshooting, configuring of Cisco 7200, 3800, 3600, 2800, 2600, 2500 and 1800 series Routers, Cisco Catalyst 6500, 4500, 3750, 2950 and 3500XL series switches.
Implementation of HSRP, VRRP and GLBP for Default Gateway Redundancy.
Expert knowledge of cable connectors and replacement as, RS-449.
Extensively worked on Network Design, Architecture and Administration.
Extensive Knowledge on the implementation of Cisco ASA 5500 series firewalls.
Worked vastly with IP multicast services like PIM, IGMP, MSDP protocols
Hands on experience working with Cisco Nexus 7K, 5K & 2K Switches.
Worked on NXOS, IOS, and IOS-XR BXB to N7K-NXOS (MPLS) system test.
Experience in managing security policies with CSM, integrated with ASA 5500 devices.
Designing and implementing F5 BIG-IP load balancer.
Design and configuring of OSPF, BGP on Juniper Routers (MX960, MX480) and SRX Firewalls (SRX240, SRX550).
Configuring and Troubleshooting Route Redistribution between static, RIP, EIGRP, OSPF& BGP protocols.
Experience in layer-3 Routing and layer-2 Switching. Dealt with Nexus models like 7K, 5K, 2Kseries, Cisco router models like 7200, 3800, 3600, 2800, 2600, 2500, 1800 series and Cisco catalyst 6500, 4500, 3750, 3500, 2900 series switches.
Expertise in creating groups and pruning traffic flow using VLAN, VTP, ISL, 802.1Q.
TECHNICAL SKILLS
Routers
Cisco 7800,4500, & 2900
Switches
Cisco 500, 3750,3800,3600,2800, 2600, Nexus 7k
Protocols
STP, MSTP, VTP, HSRP, VRRP, DHCP, SNMP, NAT, RIP, EIGRP, OSPF, BGP.RJ-11, RJ-45, V.35
F5 Load Balancers
VIPRION 4400, 2400.
Firewall
Checkpoint GAIA Console R75.40 & R77.10, Cisco ASA 5515 & 5545
Unified Communications
UCS E-Series Blades
Wireless Controllers
Cisco 4400, 5500
Access Points
Cisco 1242, 2400 & 3500.
Network Management Tools
EMC SMARTS IONIX, What sup gold, Wireshark, MRTG, PRTG,HPNA,NetQos,CA Ehealth,Lancope and Cisco WCS, Solar winds.
PROFESSIONAL EXPERIENCE:
UPS, NJ Apr 2014 to Till Date
Sr. Network engineer
Description: A messenger company in the United States, UPS has grown into a multi-billion-dollar corporation by clearly focusing on the goal of enabling commerce around the globe. Today, UPS is a global company with one of the most recognized and admired brands in the world. We have become the world's largest package delivery company and a leading global provider of specialized transportation and logistics services. Every day, we manage the flow of goods, funds, and information in more than 200 countries and territories worldwide.
Responsibilities:
Configured and deployed VDC and VPC between Nexus 7018 and Nexus 5548 switches along with FEX 2248. Deployed Horizontal connectivity using OTV. Have a good understanding of Fabric Path.
Proficient hands on experience in configuring Cisco Catalyst 2900,2960, 3560, 3750, 4500, 4900, 6500series and Nexus 2248, 5548 and 7010 switches.
Involved in the troubleshooting aspects of complex network infrastructure using the routing protocols like EIGRP, BGP.
Worked on multiple issues like troubleshooting CE side VRFs and routing issues with BGP multi-homing across multiple MPLS Clouds.
Experience working with 2600, 2900, 3600, 3900, 7200, 7600 series Cisco Routers
Expertise in Layer-2 Ethernet Switching deployment with technologies like STP, RSTP, PVST, RPVST along with trouble- shooting of inter-VLAN routing and VLAN Trunking using 802.1Q. Hands on troubleshooting experience with First Hop redundancy protocol like HSRP and GLBP.
Strong working experience on Cisco ASA 5540 Series that includes rule deployment, configuration using Network & Port objects. Deployment of DMZ and troubleshooting ASA Cluster failovers.
Performed load balancing and application level redundancy by deploying F5 BIG-IP LTM 3900.
Involved in the configuration and maintenance of IPSec Site-Site VPN.
Performed basic security and ACL administration on Juniper SRX firewalls. That includes day to day rule deployment, troubleshooting using data flow analysis and packet capture.
Planned and implemented network designs, including WAN, LAN, MPLS.
Background in network design, including Wide Area Networking (WAN), Local Area Networking (LAN), Multiple Protocol Labeling Switching (MPLS), DS3.
Actively involved in fault management and change management of the network in order to provide high availability.
Involved in the design and installation of Branch network systems, also maintained network documentation using VISIO.
Responsible for entire LAN and WAN maintenance and troubleshooting of the company network.
Involved in the Team of Data Center Operations to perform duties like administration and deployment of Cisco Routers and Switches according to the organization requirements and assisting with network capacity and high availability requirements.
Involved in project planning and reviewing based on the requirements and deploying within the existing network. Used Riverbed appliance for Bandwidth optimization and application acceleration.
Trouble-shooting duplex mismatch errors with steel head appliance.
Upgrading system images on Nexus 5 and 7 multi-layers switches using kick start and FTP server.
Data center fabric migration from legacy catalyst to nexus.
Used 7000 series switches with 10 and 18 slot chassis with F series module. Used VPC as the multichassis port-channel solution for Nexus switches.
Reviewing all changes to network configuration for technical accuracy and provide solutions to Multi-Protocol Network problems.
Configured and managed VLANs, 802.1Q Trunk, RPVST+, Inter-VLAN routing, HSRP and LAN security for Layer-2 and Layer-3 switching domains as per the organization's requirement plan. IP Allocation for all applications and servers with high availability throughout the company.
Configured ASA 5540 to ensure high-end security on the network with ACLs and Firewall. Assigned a security level (0-100) on Cisco ASA and the number vary with the trust issues.
For trusted it is 100 and less trusted it is 0. Worked with firewall SRX550 services gateway security for routing, switching and WAN connectivity.
Used IPSec VPN tunneling to provide access to user machines and partners in other network.
Provided application level redundancy and availability by deploying F5 load balancers LTM.
Involved in designing and commissioning WAN infrastructure for redundancy in case of link failure.
Responsible for technical evaluation, troubleshooting, overall project management, problem solving and turn-up of the service with the ISP.
Environment: RIP, OSPF, BGP, EIGRP, VLAN, MPLS, F5 Load Balancer 6400, STP, RPVST, LAN, WAN and HSRP, Juniper SRX, Juniper EX, LAN, WAN, VPN, DNS, DHCP, FTP, HTTP, CISCO ASA 5540
Verizon, NY Jan 2013 to Mar 2014
Sr. Network engineer
Description: Verizon Communications Inc., branded as Verizon, is an American broadband and telecommunications company, the largest U.S. wireless communications service provider as of September 2014, and a corporate component of the Dow Jones Industrial Average. The company is based at 140 West Street in Lower Manhattan, New York City, but is incorporated in Delaware.
Responsibilities:
Involved in Configuring and implementing of Composite Network models consists of Cisco7600, 7200, 3800 series routers and Cisco 2950, 3500, 5000, 6500 Series and Nexus switches.
Configured networks using routing protocols such as RIP, OSPF, BGP and manipulated routing updates using route-map, distribute list and administrative distance for on-demand Infrastructure.
Configured OSPF over frame relay networks for NBMA and point to multipoint strategies.
Configured and maintained Cisco ASA firewalls.
Implementing traffic engineering on top of an existing Multiprotocol Label Switching (MPLS) network using Frame Relay and Open Shortest Path First (OSPF).
Provided redundancy in a multi homed Border Gateway Protocol (BGP) network by tunings AS-path.
Implemented Hot Standby Router Protocol (HSRP) by tuning parameters like preemption.
Implemented various OSPF scenarios on networks consisting of 7600 routers.
Configured policy based routing for BGP for complex network systems.
Configured Multiprotocol Label Switching (MPLS) VPN with Routing Information Protocol (RIP) on the customer’s Site.
Cisco Secure Access Control Server (ACS) for Windows to authenticate users that connects to a VPN 3000 Concentrator.
Worked on FTP, HTTP, DNS, DHCP servers in windows server-client environment with resource allocation to desired Virtual LANs of network.
Responsible for day to day management of Cisco Devices, Traffic management and monitoring.
Configured and managed OSPF redistribution and authentication with type 3 LSA filtering and to prevent LSA flooding and also configured OSPF over frame relay networks for NBMA and point to multipoint strategies.
Extensively worked on layer 2 features like STP, VLAN, and VTP and implemented them on new switches and used to troubleshoot any issues.
Designing, configuring, implementing and troubleshooting (LAN) VLAN’s, VTP, Spanning Tree (STP), Trunking (dot1q and ISL) and Ether channel.
Implementing and managing traffic engineering on top of an existing Multiprotocol Label Switching (MPLS) network using Frame Relay and Open Shortest Path First (OSPF).
Configuring and implementing F5 BIG-IP,LTM,GTM load balancers to maintain global and local traffic
Hands on experience with Nexus Switches 2K, 5K and 7K.
Network consists of Heavy Cisco equipment such as: Cisco 356*-****-**** switches, Cisco 650*-****-**** series Layer 3 switches, Cisco 382*-****-**** series routers.
Hands on experience and good working knowledge with Checkpoint Firewall policy provisioning.
Worked on Firewall Administration, Rule Analysis, and Rule Modification.
Environment: Cisco 3560/2950/2924/6509/6513/5500 switches, Cisco 3825/3640/7200 routers, VPN, BGP, OSPF, RIP, EIGRP, F5 BIG-IP, LTM, GTM, Nexus Switches 5K/7K, VLAN, VTP, and Checkpoint.
First Bancorp, Damariscotta, ME Nov 2011 to Dec 2012
Sr. Network engineer
Description: The First Bancorp, Inc. is a $1.5 billion bank holding company, based in Damariscotta, Maine, which serves the Mid-Coast, Down East and Northern regions of the Pine Tree State. The Company's subsidiary, The First, N. A., was established in 1864, and with 16 offices from Wiscasset to Calais and now Bangor, today serves several of the fastest-growing counties in the State of Maine. The demographic profile for our market area is very favorable, since population dynamics, migration of affluent retirees, job growth and technological advances favor the coastal regions of the state.
Responsibilities:
Troubleshooting issues related to Layer 1/2/3 skills like switching / routing, WAN /Hardware and critical network links by coordinating with the vendor.
Troubleshooting the Juniper SRX100 and 110 series, Juniper Netscreen routers with Site-Site VPN, and firewalls for Supervalu Retail sites.
Remediation of firewall rules from checkpoint firewalls to Cisco ASA firewalls and their implementation.
Installing and configuring new Cisco equipment including Cisco catalyst switches 6500, Nexus 7010, Nexus 5548 and Nexus 2k as per the requirement of the company.
24x7 on-call escalation support as part of the security operations team.
Working configuration of new VLANs and extension of existing VLANs on/to the necessary equipment to have connectivity between two different data centers.
Managing and providing support to various project teams with regards to the addition of new equipment such as routers switches and firewalls to the DMZs.
Worked extensively in Configuring, Monitoring and Troubleshooting Cisco's ASA 5500.
Experience in migration of VLANS.
Handling enterprise outages effectively and driving towards the resolution. Coordination of fault escalations in conjunction with the 1st high-level technical management of high priority or technically complex calls.
Working with Capacity management on network bandwidth utilization reporting of the sites WAN link and vendor co-ordination for new site turnovers / WAN links.
Preparing Metrics report detailing on SLA performance of tickets and process quality report to analyze team performance & discussion on the improvement areas (By monthly).
Providing training to new comers and effectively working towards a process quality improvement in the Team.
Responsible for Cisco ASA firewall administration, Rule Analysis, Rule Modification.
Supporting EIGRP and BGP based on the network by resolving level 2 & 3 problems of internal teams & external customers of all locations
Performing troubleshooting on slow network connectivity issues, routing issues that involves OSPF, BGP and identifying the root cause of the issues.
Extensive hands-on experience with complex routed LAN and WAN networks, routers and switches.
Hands-on experience with Ether Channel, Spanning Tree, Trunking, ACLs, Syslog. Experience in the setup of HSRP, Access-Lists, and RIP, EIGRP, and tunnel installations.
Proficiency in configuration of VLAN setup on various Cisco Routers and Switches.
Work assigned tickets to determine the point of failure and resolve problems remotely utilizing available tools and other Operation Center resources.
Provide escalation support to L1 members of network team.
Worked with different ISP globally for any WAN circuit and BGP routing issues. Opening up cases for CE routers, Riverbed optimizer issues.
Work & escalate problems effectively in order to meet customer SLA's (service level agreements).
Perform problem management and root cause analysis for customers as required.
Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools.
Environment: Nexus 2k/5k/7k, Cisco 6500/7500/7200 Routers, Cisco 3550/4500/6500 switches,
Juniper SRX100,LAN,WAN,OSPF,RIP,BGP,EIGRP,HSRP,PPP,VPN,Checkpoint,Cisco ASA.
Choice Solutions Ltd, Hyderabad, India Nov 2009 to Aug 2011
Sr. Network engineer
Description: Choice Solutions Limited (henceforth also referred to as 'us', 'we', 'our', 'the company') is a leading IT infrastructure and data center solution provider. We have been serving thousands of customers in and outside India since 1991. Over the years, we have developed deep expertise in architecture and implementation to provide our clients with a one-stop solution that works reliably from the word go. With our focus of energy efficiency and high utilization, you will get a higher return from your IT investment for:
Responsibilities:
Cisco switches 4900, 2900Key contributions include troubleshooting of complex LAN/WAN infrastructure that include.
Configured Firewall logging, DMZs & related security policies & monitoring.
Creating Private VLANs & preventing VLAN hopping attacks & mitigating spoofing with snooping & IP source guard
Installed and configured Cisco PIX 535 series firewall and configured remote access IPSEC VPN on Cisco PIX Firewall.
Enabled STP Enhancements to speed up the network convergence that include Port-fast, Uplink-fast and Backbone-fa
Establishing VPN Tunnels using IPSec encryption standards and also configuring and implementing site-to-site VPN, Remote VPN.
Configured network access servers and routers for AAA Security (RADIUS/ TACACS+)
Other responsibilities included documentation and change control
Responsible for Configuring SITE_TO_SITE VPN on Cisco Routers between Head Quarters and Branch locations
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
Installation & configuration of Cisco VPN concentrator 3060 for VPN tunnel with Cisco VPN hardware & software client and PIX firewall
Involved in troubleshooting of DNS, DHCP and other IP conflict problems
Used various scanning and sniffing tools like Wire-shark.
Experience with Infoblox technologies.
Hands on Experience working with security issue like applying ACL’s, configuring NAT and VPN
Documenting and Log analyzing the Cisco PIX series firewall
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.
Advanced Networks, Hyderabad, India May 2008 to Oct 2009
Sr. Network engineer
Description: Time wasted is money lost. Insure your company or organization against lost productivity. We provide the tools for success and the customized support that keep businesses, financial institutions, hospitals, and medical systems operating smoothly. Our Certified Microsoft and Cisco Engineers and Professionals ensure end-to-end management and total proficiency.
Responsibilities:
Configured OSPF on CISCO devices with multiple routing processes and redistributed them. Tested and hands on experience in multi area OSPF topologies.
Configuring, managing and troubleshooting networks using routing protocols like RIP, EIGRP and OSPF (Single Area and Multi Area
Assisted with troubleshooting all network issues with routers and switches when necessary and consulted with on call tech as needed for client.
Monitor, troubleshoot, test and resolve Frame Relay, ATM, MLPPP, PPP, and Dial-up.
Configuring/Troubleshoot issues with the following types of routers Cisco (7200, 6500, 4500, 1700, 2600 and 3500 series), to include: bridging, switching, routing, Ethernet, NAT, and DHCP, as well as assisting with customer LAN /MAN, router/firewalls.
Responsible for LAN and internet connection file and print server.
Maintained and installed new internet connections for customers.
Configured all devices for remote sites/plants, vendors and added new equipment to RADIUS and worked with MPLS-VPN and TACACS configurations.
Created load balancing policies using BGP attributes such as Local Preference, AS-Path, MED, Community etc.
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
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