Data Center Infrastructure Management

SATHIYARAJ RAMALINGAM

Mobile: +1-984-***-****

E-mail: ************@*****.***

Work Authorization – H1B Visa

Professional Summary

Having 15 Years of experience in Network & Security infrastructure Management and Operations. Extensive knowledge in configuration, administration, and support of network & Security products. Experience in LAN/WAN and Security planning, implementation, and operations of various customer’s environment. Educational Qualification

Bachelor of Technology (B.Tech) in Computer Sciences and Engineering from Dr.MGR Educational & Research Institute, Chennai, TN, India. Certifications

• CCIE # 47422 (SP)

• CCDE Written

• CCIE Security/DC Written

• Cisco Certified Specialist - Enterprise Core

• Cisco Certified Specialist - Enterprise Advanced Infrastructure Implementation

• Cisco Certified Specialist - Data Center Core

• Cisco Certified Specialist - Service Provider Core

• Cisco Certified Specialist - Security Core

• Cisco Certified Design Specialist

• Cisco Certified Devnet Specialist - Core

• CCNP (RS/Enterprise)

• CCNA

• JNCIA – Juniper Network Certified Associate

• JNCIS-ENT – Juniper Enterprise Routing and Switching, Specialist

• PaloAlto – ACE

Technical Skills

Products: Cisco, Juniper, Arista, Brocade, ASA/PaloAlto, F5, Riverbed, Meraki, Aruba Platform: Cisco7200, ASR, Nexus 5K,7K, 9K, Fex, ACI Fabric, ISR, Cat65K, 45K, Arista DCS7280, Brocade7450, 6450, Aruba wireless and CPPM, Technology: Routing & Switching, WAN/LAN, MPLS, BGP, OSPF, VPN, QoS, Multicast Public Cloud, Zscaler, SD-WAN, Network Automation. Specialities: Network & Security- Planning, Implementation/Migrations and Operations Work Experience

Organization : HCL Technologies Ltd

Experience : Feb2016 – Jun2024

Role : Consultant –Network & Security (DC, WAN/LAN/Automation) Profile Summary:

Network Projects Implementation/Migration: - Datacentre Cloud Migration – Onsite

(Norway, Swizz, Netherlands, and China)

• Involved in planning, Design, and implementation of datacentre deployment.

• Involved in Migrating/integrate the B2B partners Networks into new cloud datacentre setup to accessing the applications as excepted.

• Involved in migrating customer enterprise networks into the public cloud.

• Involved in deployment of Cisco Nexus/ACI in the Core infrastructure.

• Involved in implementation of ACI Spine/Leaf infrastructure in datacentres.

• Involved in enterprise redefined network architecture (Tier1/Tier2)

• Involved in DMPVN deployments and migrations.

• Implemented IPsec connectivity between cloud/DC

• Implemented VxLAN setup in datacentre.

• Involved in migration of enterprise WLC into cisco Meraki cloud.

• HLD/LLD preparation as per customer requirement

Network Operations Scope: -

• Managed enterprise and Datacentre infrastructure and product engineering.

• Responsible for L3 level of escalations and troubleshooting.

• Deployed Various Network products Cisco, Arista, Juniper, Brocade, Palo Alto, Zscaler, ASA and Checkpoint

• Manged cloud traffic into the enterprise network and ensure user accessibility to application in datacenters.

• Deployed DMPV/IPsec and Site-to-site connectivity across branch office

• Implemented zone-based firewall and rule creation as per requirements.

• Deployed B2B connectivity for partner access in our DC’s

• Involved on tech-refresh changes and migrations.

• Ensured the ISP traffic failover across the branch location.

• Ensured datacentre availability and reliability meet the requirements of network operations of the customer infrastructure.

• Used Packet Sniffer tools (wireshark) for root cause analysis in the infrastructure.

• Managed IPAM/Infoblox tool for DHCP/DNS reservation & accessibility.

• Cisco /Aruba WLC, AP’s deployment, and management

• Traffic analyser: LiveAction, Netprofiler

• Tools/Monitoring: ServiceNow, SolarWinds, Netbrain, MRTG, GIT Hub, Grafana, SmokePing, LibreNMS, Datadog, and Cisco Prime Infrastructure

Organization : Infosys Ltd

Experience : July2015 – Feb2016

Role : Technology Lead

Project Summary

• Implemented 50 new sites migration with Hub location of client Network infrastructure.

• Migrated the existing protocols with advanced protocols for remote locations as per client requirement.

• Ensue the application accessibility for all new locations to datacentres.

• Prepared LLD documentation for all new locations and handed over to support teams.

Organization : Sify Technologies Ltd

Experience : July2014 – July2015

Job Profile: -

• Worked as a Sr. Network Engineer.

• Part of planning and designing for customer projects.

• Implemented different routing protocols like BGP, EIGRP, OSPF and RIP in the core and customer network.

• Provisioning and designing of MPLS VPN customer.

• Implementing L2 VPN over MPLS backbone.

• Implementing QOS over MPLS backbone for L3 as well as L2 customers.

• Implementing Multicasting as per customer requirement.

• Updating and managing the documentation as per standard for each enterprise client with all the information.

• Implemented of IP MPLS & MPLS VPN for the customers.

• Managed Q-in-Q project for the Metro locations.

• Involved in Change management process for Core network and customer’s network.

• Raising and Execution of Change Managements for addition and Modification in design of the core, distribution, and edge of Sify’s Network Infrastructure.

Organization : NSN (Nokia Solutions & networks)

Experience : Feb 2014 – June 2014

Project Summary

• Working as a Sr. IP Engineer.

• IP Planning: IP addressing, routing and VLAN addressing, port allocation for PE and CE backbone.

• Protocol troubleshooting like BGP, OSPF and EIGRP

Organization : WIPRO

Experience : March 2013 – Feb 2014

Project Summary:

• Worked as a Senior Network Engineer.

• Configured approximately 150 Branch locations as Spoke with Hub in MPLS Core.

• Last mile migration from OSPF to BGP

• Configured/migrated L3 switches from EIGRP to OSPF in the core network.

• Replaced Distribution switches by Catalyst 6500 Series switches.

• Identified the Single Point of Failure in the core and cleared using HSRP and VRRP concepts.

Organization : Tata Communications Ltd

Experience : Feb 2012 – March 2013

Designation : Network Engineer – L2

Job Profile at Tata Communications

• Core network engineering team with the responsibility of Designing Configuring and Managing GDC spanning across India, US, UK, and Singapore that includes wide range of Cisco Routers, switches, Juniper, and firewalls.

• Solved the Problems in RIP, EIGRP, OSPF and BGP protocols.

• Solved the problems in MPLS, VPN, QOS, and IPsec technology.

• Implemented switching technologies such as like STP, MSTP, VTP and HSRP.

• Implemented Traffic filters using ACL, Prefix list and Route Maps

• Managing WLC and AP devices

• Raising and Execution of RFC for addition and Modification in design of the core, distribution, and edge layer

• Coordination with IP NOC for new implementations and customer related problems.

• Providing solution to escalated corporate and hosting customer’s issues from Technical Help desk & service delivery team.

• Third - Level escalation contact for network problems.

• Providing technical training & allocating resources for problem management

Organization : Sify Technologies Ltd

Experience : March 2010 – Feb 2012

Designation : Engineer – Global Network operations centre Job Profile at Sify Technologies

• Implemented and maintained more than 500 customers with different last miles connectivity (MPLS, MPLSVPN, IVPN).

• To troubleshooting and resolve the day-to-day Problems on Broad Band, Leased Line, and Bridged Broadband and Multilink last miles.

• To troubleshoot in routing and switching issues for customers.

• To troubleshoot the connectivity on layer3 in case there are access problems for locations (VPN, IVPN).

• To troubleshoot on L2 connectivity

• Provided technical solutions for Customer.

• Being an ISP handling calls with Global customers includes Global Crossing, PCCW, BTNA, AT & T etc... To trouble shoot and resolve Network related.

Organization : Skylark Information Technologies Pvt Ltd Experience : March 2009 – March 2010

Designation : Customer Support Engineer

Client : Ford Business services centre

Roles and Responsibilities at Ford

• Maintenance of WAN Network Devices like Leased line and ISDN.

• Identify and Isolate the WAN Related issues, Contact Service providers and get.

Necessary support to resolve the issues.

• Maintenance of Cisco Routers and Switches.

• Troubleshooting in LAN connectivity problem.

• Co-ordinating with NOC team to IOS installation and up gradation in Cisco Routers & Switches.

• Monitoring WAN and LAN link status to updating for daily Reports.

• Updating and maintaining daily / weekly and monthly WAN bandwidth Utilization Reports.

• Co-ordinating with NOC for any WAN, LAN issues & link errors.

• Prepared the Network run book documents as per the company policy.

• Maintaining the Network incident & down time reports.

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