NIRMAL KUMAR RAMAKRISHNAN

720-***-**** adda1j@r.postjobfree.com LinkedInURL

Englewood, Colorado

Over 12 years of work experience with reputed IT industries and Technologies.

Highly self-motivated and directed, with keen attention to detail.

Experience in implementation and maintenance of LAN/WAN Networks using start of the art technology.

Work Experience in Infrastructure setup for Data centers.

SD-WAN Knowledge Cisco Meraki

Specialized in implementation and troubleshooting of networking and communication products.

Strong customer service orientation with proven analytical and problem-solving abilities.

Worked in preparing BOM for project requirement.

Involved in preparing high level failover test plan for newly built Greenfield DC infrastructure.

Experience in integration with Intercompany routing & filter routing table, manipulate IP prefix through BGP attributes.

Experience in working with cabling vendors for structured cabling across racks inside the DC & provide patching sheets for network, SAN & servers.

Experience in preparing network connectivity diagram using Microsoft Visio.

Experience in helping with the delivery of Network Migration (LAN/WAN)

Extensive knowledge in configuring and troubleshooting Layer 3 Interior Gateway Routing protocols such as Link-State routing protocols [OSPF] and Distance Vector routing protocols [EIGRP].

Good knowledge in configuring and troubleshooting Exterior Gateway protocols such as BGPv4 including internal BGP (iBGP) and external BGP (eBGP).

Configuring Nexus 7009, 7010, 5596, 2K data center routers/switches for redundancy with HSRPv2, VPC's.

Proficiency in configuration of Layer2 and Layer3 Virtual Local Area Networks using Cisco multi-layer Switches supporting STP, RSTP, PVST along with inter VLAN routing and VLAN trunking 802.1q.

Experienced in troubleshooting both connectivity issues and hardware problems on Cisco based networks.

Experience deploying BIG-IP F5LTM Load Balancers for load balancing and traffic management of business application.

Creating operational turnover documentation, diagrams and training material.

Extensive knowledge in globally recognized ITSM tools like, Service Now, BMC Remedy, CA

Experience in troubleshooting the traffic using Packet Capture and analyze using Wireshark.

Hands on experience in upgrading Cisco IOS & Firmware on different Cisco devices & modules.

Protocols: EBGP, IBGP, MBGP,OSPF, EIGRP,RIP, TCP/IP, UDP, MPLS, MST, PVTST, RSTP, HSRP,VRRP, GLBP, LACP, PAGP,BFD

SD-WAN - Cisco Meraki

SDN - Cisco ACI

Datacenter: VDC, Fabric Path, OTV, FCoE, Virtualization, EVPC, VPC+, Single sided VPC, VXLAN.

WAN Technologies: MPLS, ISDN - BRI/PRI, T1/E1/Channelized ATM & Frame-Relay, IPSEC VPN using the Cisco Router & ASA.

Network management protocols: CDP, LLDP,FTP, TFTP, SNMP

Security Protocols & Framework: SSH, HTTPS, AAA, IPSec, MacSec,SSL,IKE, ISAKAMP, GRE,ESP,AH,SSL,DMVPN,Radius,TACACS+

NMS/Packet Analyzer: Wireshark, WhatsUp Gold, MRTG,PRTG, Syslog server, Cisco Works, Net Flow analyzer, Spectrum, Splunk, NetQOS, HPNA,HP NNMI,CMDB+.

OS : IOS,IOS XE, Nexus OS

Routers: Cisco 1700/2600/2900/3700/3800/3900, 7206 VXR series routers,ASR 1006,HP 12500,HP MSR 2004

DC Switches: Cisco Nexus 9K,7K,5K,2K

Enterprise Switches: Cisco Catalyst 6509/4506/3750/3524/2950/2948G/2960,HP5900,Switch stack,Hp IRF,SPAN,RSPAN

Firewall & VPN Box : Palo Alto 5060,Cisco PIX 515E/, ASA 5520, ASA 5510,ASA 5505,VPN 3000

Wireless: Cisco 5500 Series Wireless LAN Controller

Load Balancer : LTM 2200S 2000S

Ticketing Tool : Service Now,Remedy,CA

• ITIL Expert Certificate in IT Service Management (ITILEXP)

•Cisco Certified Network Associates (CCNA)

•TSHOOT(CCNP)

•Check Point Certified Security Administrator (CCSA) R77

•ITIL V3 Foundation

•Applying HP FlexNetwork Fundamentals

B.E – EEE (Electrical & Electronics Engineering)

University of Madras.

KG Lewis - Project: ENCANA Oil & Gas

Senior Network Analyst - from May 2019 to Till Date,

Responsibilities:

Deploying Application Centric Infrastructure, Spine-Leaf, APIC and VXLAN .

Replaced old 6500 and WAN and Installed Nexus 7K and ASR 7300 routers.

Provide First level technical support for ACI (Application Centric Infrastructure), APIC technologies

Worked in an environment with Border leaf, Spine and Leaf architecture

Worked on OS upgrades & ACL updates on various models of Cisco routers & switches

Configured and performed software upgrades on Cisco Wireless LAN Controllers 5508 for Wireless Network Access Control integration with Cisco ISE

Configured TCP/IP addressing scheme to assigned IP blocks.

Configured BGP, OSPF and VRF on Cisco routers.

Configure, maintain and upgrade of data center infrastructure, Nexus 7k, 6k, 5k, 2k, and UCS, employing VDC, VPC, VRF, and fabric-path technologies

Configured and managed Cisco access layer routers and switches & carried out route redistribution & manipulated route updates using distribute lists, route-maps & administrative distance, and offset-lists .

DXC Technologies(Formerly HP Enterprise)- Project Deutsche Bank

Technology Consultant III - from April 2015 to May 2018,

Responsibilities:

Configured Nexus 7K/5K/2K and Catalyst 6500/4900/3750-X in a complex DC

Core/Aggregation/Access layer on a 10G backbone in Production and DR Data Center

Responsible for DC LAN build, Integration, implementation, planning & transformation in AMS/EMEA/APAC Region for leading banking infrastructure in Germany.

Fault domain concept was introduced to provide two independent LAN infrastructures within one Data Center Pair.

DC Onsite builds at US, Japan & Singapore regions.

Implement & configure Core, spine, pod aggregation, Palo alto Firewalls and F5 Load Balancers are installed into Data centers.

High and Low-Level Design documentation for regional & core data centers.

Top of rack switches dedicated for server connectivity are installed & configured.

Design and implemented network setup for 1000+ servers across regional data centers.

Change Management – which include planning, scheduling, tracking and executing Change Requests as per defined SLA norms.

Working with senior network solution architect to assist with overall network Implementation.

Datacenter Interconnect through L2 DWDM circuits & encrypt/decrypt using MAcSec

Built IBGP full mesh network between datacenters

Xerox Corporation - Information Management Senior Specialist,

April 2013 to Oct 16th 2014

Responsibility:

Manage & support Global network infrastructure from the network operations center.

Perform root cause analysis (RCA) for network outages.

Experience with configuring Nexus 2000 Fabric Extender (FEX), which acts as a remote line card (module) for the Nexus 5548.

Involved in the activity of DATA-Center migration of Cisco catalyst series 4500, 6500 switches with the new Nexus 2248, 5548, 7009 using F3/M3 line-cards with 10GE & 40GE interfaces and Supervisor 2E.

Responsible for turning up BGP peering and customer sessions, as well as debugging BGP routing problems.

Van’s design and implementation, Spanning Tree Implementation and support using PVST, R-PVST and MSTP to avoid loops in the network.

Analyze technical needs, requirements and state of the network’s infrastructure design, integration, and operations.

Maintain documentation of processes, procedures, troubleshooting guides and change management logs.

Creation & modification of access list, prefix list & distribution lists, Route-map NAT (Static & Dynamic).

Implement and Troubleshoot WAN Technologies as Frame-Relay, ATM, ISDN, Ethernet, and ADSL.

Troubleshoot BGP, EIGRP & OSPF for DC infrastructure.

Create, log troubleshoot notes and maintain outage notification logs and follow documented escalation procedure where appropriate.

Configured IPSEC VPN tunnels over backup Internet connections for increased availability.

Team Lead - Network Operations Internet Data Center & NOC,

from July 2011 to March 2013 Net 4 India Ltd.

Responsibility:

Physical build-out of Data Center network, hiring of staff, creating processes and procedures and documentation.

Responsible for monitoring and troubleshooting a ISP and Data Center network of over 100 servers providing application services and facilities for a data center hosting over 1000 servers.

Provide leadership and direction during the escalation of major service outages on the network. Ensure that incidents are escalated/notified to senior management.

Maintain cooling, UPS, KVM, surrounding facilities and other data center equipment considerations while creating and maintaining all server and data center documentation Scheduling a large team to ensure proper coverage for a 24x7 operations.

Adhere to established internal procedures and guidelines and the ability to document using ITIL and ISO complaint formats.

Firewall administration and overall internal network security.

Secure datacenter systems through the establishment and enforcement of policies and the definition and monitoring of access

Team Lead-L1 Data Chennai NOC & WNS Operations India, from Sep 2007 to July 2011

Cable&Wireless Worldwide

Responsibility:

Managing and leading a Level1-Data team.

Responsible to support all elements of data network to large corporate customers.

Installation, Administration, Troubleshooting of Cisco based network.

Manage 20+ Worldwide Connected Customer sites from NOC.

Installation, configuration and maintenance of complete LAN network including Core Switches (Cisco Catalyst 6509), Access Switches (Cisco Catalyst 2950 and 3500 series) for Enterprise networks.

Did objective settings and Performance appraisal for my Team members.

Worked closely with the Project team and provisioning to implement a upgraded network setup and, resulting in a substantial improvement of the network's uptime.

Responsible for generating various types of reports which includes hardware management, inventory management, change management, application management and vendor management.

Network Engineer, from January 2006 to August 2007

Inknowtek Ltd - Outsourced to Cable&Wireless India Ltd.,

Responsibility:

Performance monitoring of the network with the help of network monitoring tools like Observer Probe and Net watch.

Responsible for Level 1 & Level 2 troubleshooting of network problems and escalation to Cable & Wireless (U.K) in case of not able to resolve the problem locally.

Onsite network and equipment upgrades to include IOS, CatOS image upgrades, and configuration changes.

Responsible for the customer process applications like softphone, web view, witness.

Managing and monitoring the international IPLC Links from BHARTI & TTSL and coordinating with the service provider for 99.9% uptime.

Responsible for coordinating Cable & Wireless (U.K) for change management at the site.

Summary

Technical Skills

Hand's On Experience

Certifications

Education

Professional Experience

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