SASIKALA NATARAJAN

Email: acn3mu@r.postjobfree.com M:908-***-****

SUMMARY:

* ***** ** ********** ** Telecom and Internet Service Provider industry working at various capacities such as design, implementation and technical support.

Excellent knowledge of Cisco Routers & Switches – Cisco 7600 Series, Cisco GSR 12000 Series Cisco 6500 Series, Cisco 3851, Cisco 3560 & 3750 Series, etc,CRS-1.

Designed and configured VoIP networks for largest Wireless data and voice provider in India.

Responsible for overall design of QoS for voice, wireless packet data and control traffic across IP / MPLS core network.

Experience in QOS. Used CBWFQ/LLQ /WRED etc.

Configured and supported MPLS VPNs.

Good knowledge of MPLS networks, LDP and MPLS VPNs.

Good Knowledge on data link layer technologies like leased lines, Frame Relay and ATM.

Excellent knowledge of Ethernet switching, VLANs, VLAN Trunking, HSRP and Spanning Tree Protocol (STP/RSTP).

Experience in configuring Syslog, monitoring tools like Sniffer, Cisco Works.

TECHNICAL PROFICIENCY:

Operating System :Windows 2000, Windows XP/2003, RedHat Linux 4 & 5, SUSE Linux 9 & 10 Cisco IOS 12.2 version

Networking :LAN/WAN, LWAPP,VPN,MPLS,Trunking,ATM

VOIP Protocols :H.323,SIP,MGCP.

Hardware :HP Servers BL35p

Office Suite :MS Excel, MS Word, MS PowerPoint, Visio.

Tools :HP Openview Network Node Manager, OP Manager, CiscoWorks,Netflow,Sflow,IPSLA.

WAN Protocols :Frame Relay, HDLC, PPP, TCP/IP,Ethernet,Fibre Channel.

Routing Protocols :RIP, IGRP, OSPF, EIGRP,BGP,IS-IS.

Virtual Environment :VMware Workstation.

Redundancy Protocol : HSRP,VRRP,GLBP.

Security :PIX,Checkpoint,Cisco Security Manager,Netscreen, Cisco Configuration Engine, Access-lists,SSH,IPSEC,3DES,Cisco Virtual Office(CVO),RADIUS/TACACS

PROFESSIONAL EXPERIENCE:

Hewlett Packard

Role:Network Engineer Feb. 2013 – Present

Researching and documenting HP customer subsidiary networks targeted for migration into the HP corporate network.

Designing, configuring and implementing HP ProCurve network solutions to replace existing Cisco network gear.

Configured HSRP for Redundancy, GLBP AND VRRP, HSRP with IPSLA.

ACL, securing routers and switches

Cisco router configuration set up routing protocols like RIP, EIGRP, OSPF and BGP and Static

Configured NAT on CPE such as dynamic and Static

Physical cabling, IP addressing, Wide Area Network configurations (MPLS and BGP).

Configured Layer 3 VPN on Datacenter routers creating a separate VRF for every customer and creating a tunnel between Datacenter router and CPE which is encrypted using IPSEC.

Installed and configured Cisco 2800 and 1800 Series routers

Configured 2800 series and 1800 Series routers for crypto maps to enable Gre Tunneling encrypted using IPSEC.

Sungard Availability Services, Philadelphia, PA April 2009 – Nov 2012

Role: Network Engineer

Routing Protocols: RIP, RIPNG, EIGRP, OSPF, BGP, BGPV4, MPLS, Junos VPN and BGP

GRE Tunnel, IPSec Layer 3 VPN, IPSEC encrypted GRE, MPLS VPN.

Switching: VLAN, VTP, STP, RSTP

Configured HSRP for Redundancy, GLBP AND VRRP, HSRP with IPSLA.

Circuit Types: T1, T3, MLPPP, GigE, OC-3, OC-12, OC-48.

Features such as CEF, IP accounting, IP route Cache, IP Subnetting.

Worked on WAN and LAN type environments.

Designed and Documented various new network layouts using Microsoft Visio tool for diff. customers migrating them from existing Verizon core MPLS cloud to a different core MPLS cloud that connects to various datacenters which hosts several applications that customers access for their production traffic.

Decommissioned POP routers thereby installing and turning up new circuits by creating IPSEC encrypted over GRE tunnels between CPE and Datacenters

Configured Datacenter Hardware that includes Juniper Series routers M10i for VPNs.

Implemented HSRP with IPSLA between two CPE (Customer Premises Equipment ) located at 2 different locations.

Tuned Local Preference and Metric values for backup circuits, inorder for the datacenters to use the primary circuit and use the backup only if the primary goes down which helps reducing the cost by less usage of the backup.

Subnetting performed to assign IP addressing for customer LAN, Firewall and DMZ.

LAN/WAN hardware including, Cisco Switches, configuration and troubleshooting MPLS.

Performed initial troubleshooting such T1 while circuit installation and turn-ups on critical severities and tried to isolate the issues finding the root cause of the problem.

Redistributing from RIP, OSPF to BGP from customer LAN to ISP WAN.

Troubleshoot TCP/IP problems; troubleshoot connectivity issues in multi protocol Ethernet environment.

Sunfix Technologies Piscataway, NJ OCT 2008 – Feb 2009

Role: Network Engineer

Network Engineer responsible for the full Planning, designing, installation and administration of the Corporate WAN.

Install and maintain security infrastructure, including IPS, IDS, log management, and security assessment systems .

WAN Routing Operations including Policy Routing, BGP, OSPF and QoS via Juniper M-Series and Cisco 2800.

Designed and Deployed Enterprise WAN Connectivity through Multihomed BGP via Cisco and Juniper Routers.

I have worked on Cisco 2600, 2800 and 1800 Series Routers for Branch Office Connectivity across 5 Branch Offices Juniper M-Series WAN Connectivity Routers

Installed the Cisco IOS® XR software operating system.

Configure the new Cisco IOS XR Software security features like ACL,VTY etc.

Responsible for OSPF route engineering to ensure network stability to also include MPLS /LDP configuration for traffic engineering. Used features such as OSPF Summarization and SPF/LSA throttling.

Perform and create procedures for system security audits, penetration-tests, and vulnerability assessments .

Maintained security of voice and data networks and equipment. Monitored and maintained physical and logical security and access to systems.

Implemented MST to run multiple instance of spanning tree in the same network and PVSTP to run each instance for each Vlan.

Worked as on onsite Engineer in installing wireless routers such as D Link and Linksys

and NETGEAR Products.

Troubleshooting MPLS VPNs issues like LDP-Synchronization, improper route target communities.

Designed the QoS infrastructure to provide proper priority and queuing based on type of the traffic.

Configuring Access Routes for Network Connectivity and configuring routing protocols like

BGP/ OSPF for routing updates within the Backbone Network.

Configuration and troubleshooting of GSR 12k series routers, control plane protocols such

as OSPF,LDP & BGP, Gigabit/10Gigabit-Ethernet, OC-12, OC-48, OC-192 .

Responsible for Analyzing Complex Circuit/Networking Issues and Routing problems.

Knowledge about CBWFQ, LLQ, WRED policies.

Implemented QoS using FIFO, Priority Queuing.

Worked on CBWFQ, LLQ, WRED based profiles in a Cisco environment.

Configured EBGP/IBGP policies, tested BGP attributes such as Local Pref, MED,

AS-PATH, Community etc.

Configured EIBGP load balancing, for customer routing scenarios Ensured stability

of BGP peering interfaces and Peering Router configurations.

Worked on Route-Reflectors to troubleshoot BGP issues related to customer route

prefixes, BGP route filtering policy problems, ORF etc.

Implemented various BGP scaling techniques like Route Refresh,Peer groups.

Worked on issues related to customer access-lists and various security features.

Supported a network with OSPF as the core routing protocol.

Worked on Remedy Management System as Analyst. I was part of the IT operations where

we create any new request or change request in the system through the remedy service desk

process and document as necessary to back up the process in terms of test plan and backout

plan. Our team had specific network support group where we get new tickets as part of the

process. We have escalation defined for emergency and regular approvals.As a Analyst

did Incident Management,Problem Management and Change Management based on

ITILv3.

Member of Problem Management team helped reducing 507 incidents per week.

Document the current process, associate information/data requirements and metrics for

Change and Service Level Management process .

Assisted with configuration, support and setup of firewall packet filtering, network address

translation, DMZs, DNS servers, combining HTTP and transparent proxies, RADIUS, HTTP

access rules, server load balancing, SSL proxy authentication, server migrations, and proxy

server hierarchy.

Worked on routing protocols such as RIP, IGRP, EIGRP, and OSPF, BGP,IS-IS on Cisco

routers.

Experienced in Configuring Frame-Relay with DE,BECN,FECN in frame relay headers.

Configured VPN over MPLS network with concept of VRF in Provider Edge and Provider Routers.

Re-engineered BGP routing(Route Maps,AS-Path,MED,Local Preference)to load balance traffic

across multiple ISP's links.

Design and implementation of 802.1p Class of Service and IP Quality of Service on Cisco and

Extreme LAN switches.

Responsible in configuring VPN with GRE and IPSEC tunnel encapsulation and provided QOS

over VPN using qos pre-classify command.

Implemented QoS using FIFO, Weighted Fair Queuing, Priority Queuing, Custom Queuing, RSVP,

RED.

Configured Cisco 7500 series routers to create a redundant, reliable network infrastructure

using BGP,OSPF,EIGRP routing protocols.

Performed network vulnerability assessments, reviewed findings with clients, and implemented solutions including policy remediation and selection and implementation of countermeasures such as intrusion detection systems, firewalls, and host security safeguards.

Configure BGP protocol at the ISP and customer site to provide redundant internet connection.

Implementing QoS, AutoQoS, Priority queuing, CBWFQ using MQC tools in Cisco switches and routers.

Designed OSPF routing, setup core as area 0 and each branch office in separate area, each country was configured in different Autonomous system, using BGP between Autonomous systems.

Resolved network problems related to equipment failures, configuration problems, and denial-of-service (DoS/DDoS) attacks.

Features such as Wi-Fi Protected Access, authentication with IEEE802.1X,LEAP,PEAP and encryption with WPATKIP.

Designing and Implementing Security for Wireless LAN,Wireless Problem Discovery and Solutions.

Precision Techserve Pvt Ltd, Chennai, India July 2006 – Mar 2008

Role: Project Engineer

Roles & Responsibilities:

Precision Techserve provides network consulting services and business solutions to help companies build, secure and manage their enterprise network infrastructures. Worked as a Project Engineer in the Remote Infrastructure Management domain which involved the following tasks

My Project Details

1.Client Name: KCP Pvt. Ltd., India

Installed HP Open View Network Node Manager and HP Open view Reporter in Client place. Monitored the total KCP network and network devices and troubleshoot the problem remotely using VPN and Remote Desktop Connection.

Installed Cisco Netflow traffic statistics monitoring tool.

Used Cisco IOS IPSLA to monitor high level of data and voice quality.

Troubleshoot most network problems with IPSLA paired with Netflow.

Captured Netflow,Sflow data and used these data to monitor overall network health.

Used Netflow report to get filter the information required to troubleshoot the network problems.

Worked in the Layer 2 security team on 802.1x and Port Security features for the Catalyst 6500 series of switches

Deployed 870 series in small office as part of KCP network that provide secure WAN and WLAN connectivity for remote users.

Lead of team designed and implemented Core Network solutions, including Multihomed BGP and OSPF, for WAN/Internet Service Provider of 100+ KCP clients.

Configured Label fixing inside a packet using MPLS for fast L2 forwarding.

Implement a QOS configuration upon the service policy.

Installed switches and performed hardware and software upgrades.

Responsible in monitoring their total networks of KCP sugars and Cements Ltd with infraworks suite such as HP Open view and Network Node Manager.

Responsible in managing applications, device availability, network conditions and status, system performance maintenance and storage resources.

Generate reports graphically such as device utilization, CPU utilization, system availability etc using HP Openview Reporter and send to the clients.

2.Client Name: Scope Knowledge Center, India

Responsible for monitoring their network and network devices using IPS. IPS logs are downloaded, viewed and analyzed using CISCO IDS Event Viewer Version 4.1(1) and Signature updates S223 or later.

Responsible for establishing interconnect between SIP or H. 323 protocols and troubleshooting of them for keeping proper signaling also worked on several protocols such as UDP, TCP, RTP, etc. . Enduring the increased traffic and buying routes from suppliers and selling them to clients. Responsible for routes management.

Deploying IP telephony network with CUCM.

Installation, Management and Monitoring of Cisco Call Manager cluster

Configuring IPT devices as per client requirements.

Troubleshooting clients IPT networks.

Cisco IP phone features configuration and administration.

Troubleshooting & Debug trace analysis of H323, SIP, MGCP gateways.

Member of the team configured Cisco ASA 5500 Series and Cisco PIX 500 Series Firewall.

Designed interior routing network architecture based on OSPF and iBGP.

Troubleshoot BGP enabled routers by issuing debug and show commands.

Configure PIX to PIX,Router to Router VPN.

Analyze and understood the logs, network traffic and justified the alarms which are triggered are severe or not. Recommended client to do changes to avoid these threats.

Help the clients to mitigate many threats that are harmful to the network and classify them based on severity such as high, medium, low and Informational.

3.Client Name: Shashun Chemicals and Drugs Ltd., India

Responsible in setting up a LAN network. Setting IP addresses, creating VLAN and VTP, IP Routing, VPN, Access List, NAT. Deployed Cisco Monitoring Analyzing and Response System(Cisco Security MARS 4.3.1/5.3.1) to monitor Network, Systems, Security Operations.

Deployed MARS and monitored the network and devices, System Performances and enhanced network security.

Configured Cisco 7600 series routers to create a redundant, reliable network infrastructure using BGP, EIGRP, and OSPF routing protocols.

Configured Cisco routers and Switches. Created VLAN and VTP, STP in switches.

Configured Cisco Routers (7000,7500,7600,7609,2500, 3000, and 4000) using RIP, IGRP, OSPF,

EIGRP,BGP,IS-IS.

Cisco Switches (6500, 5000, 3500, 2900).

Configured VLAN and VLAN Trunking Protocal in Cisco Switches(6500,5000,3500,2900) in a LAN

network.

Cisco Pix Firewalls (525, 520, 515, 506), VPN Concentrator 3000 series, Cisco IOS Firewall feature set

(IOS 12.X).

An extremely large and complex MPLS with layer 3 VPN solutions was integrated into wide BGP

and OSPF networks.

Implemented CiscoSecure Access Control Server (ACS 3.0) for Tacacs+/ Radius.

Tested several features including ISDN PRI, SLIP/PPP (PAP/CHAP), Dial-on-Demand Routing, Callback, and AAA functionality using RADIUS/TACACS.

Fixed defects in the HTTP proxy/caching, proxy authorization (using RADIUS/TACACS).

Configured Inter Vlan routing on Cisco 6500 series routers.

Configuration of GSR routers, 7609, 7606 with OSPF and catalyst 6513, 4500 switches with various VLAN.

Tested customer vrf’s in the MPLS-VPN scenario.

Deep experience in configuring and troubleshooting MPLS L3 VPN,L2 VPN using BGP as routing protocol between PE-CE.

Configured routers at multiple datacenters with BGP and OSPF.

Support CE-PE routing protocols such as EBGP,Static, and OSPF etc.

Responsible for Implementation of MPLS based VPN for various Enterprise Customers.

Troubleshooting BGP/OSPF complex routing issues in a very large scale Tier 1 ISP network.

Designed BGP and OSPF solutions for ISP, such as BGP Multihoming.

Configured LMI types such as Cisco,ANSI,Q993A for Cisco routers in Frame-relay.

Redistribution of Routing Protocols and Frame-Relay Configuration.

Assisted with configuration, support and setup of firewall packet filtering, network address transla tion, DMZs, DNS servers, combining HTTP and transparent proxies, RADIUS, HTTP access rules, server load balancing, SSL proxy authentication, server migrations, and proxy server hierarchy.

Worked on routing protocols such as RIP, IGRP, EIGRP, and OSPF, BGP,IS-IS on Cisco routers.

Experienced in Configuring Frame-Relay with DE,BECN,FECN in frame relay headers.

Configured VPN over MPLS network with concept of VRF in Provider Edge and Provider Routers.

EDUCATIONAL QUALIFICATION:

B.Tech - Information Technology with first class from Anna University, Chennai, India.

TRAINING & CERTIFICATIONS:

Technical Training on CA Access Control and eHealth

Undergone MCSE Training in Jetking Institute of Networking, Chennai, India.

Cisco Certified Network Associate(CCNA):CSCO11245263

Cisco Certified Network Professional(CCNP):CSCO11245263

Building Scalable Cisco Internetworks(BSCI)

Building Cisco Multilayer Switched Networks(BCMSN)

Implementing Secure Converged Wide Area Networks(ISCW)

Optimizing Converged Cisco Networks(ONT)

Undergone Information Technology Infrastructure Library (ITIL) training, Chennai, India.

Have Worked in Network Monitoring Tools such as HP Open View,InfraWorks etc to monitor the networks with SNMP

Have implemented the end point security applications such as Pointsec for PC in Desktops and mobile PCs with Disk Encryption Techniques.

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