Nikil Sipiliganj

Email ID: ac7fkl@r.postjobfree.com

Phone: 214-***-****

linkedin.com/in/nikill-sipiliganj-1b615a173/

Professional Summary -

Cisco Certified Network Engineer with 9 years of professional experience in Network engineering, performing Network analysis, design, Implementing, capacity planning with focus on performance tuning and support of large Networks and 6 years of Production support/Network Administration.

Strong hands on experience in installing, troubleshooting, configuring of Cisco ASR, 7200, 3900, 3800, 2900, 2800, and 1800 series Routers, Cisco Catalyst 6500, 4500, 3750, 2950 and 3500XL series switches.

Strong knowledge in Cisco Routing, Switching and Security with Cisco hardware/software (heavy Cisco shop) experience.

Experience working with Nexus 7010/Nexus 7018, 5020, 2148, 2248 devices.

Experience working on Juniper series of devices like MX-960, MX-480, MX-104, MX-480, SRX-550, SRX-240, SRX210 and EX, QFX series of switches.

Experience in troubleshooting and deploying of various IP Routing Protocols OSPF & BGP on Juniper routers.

Working experience on Pa-5020, Pa-3020 series Palo Alto firewalls and Panorama.

Acquired strong skills in working with cloud-based WLAN technologies like 802.11ac/b/n/g Cisco WLAN, CISCO Meraki and Aruba wireless.

Good Hands on experience in deploying, troubleshooting and configuring Cisco Meraki Layer 2 and Layer 3 switches like MS 225, MS 250 and MS 350.

Involved in troubleshooting of DNS, DHCP and other IP conflict problems.

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

Experience with F5 load balancers and Cisco load balancers (CSM, ACE and GSS).

Basic and advance F5 load balancer configurations, including migrating configurations from Cisco ACE to F5 and general troubleshooting of the F5 load balancers

Efficient at use of Microsoft VISIO/Office as technical documentation and presentation tools.

Implementing security policies using Cryptography, ACL, SDM, PIX Firewall, IPsec, VPN, and AAA Security on different series of routers.

Experience with industry recognized SIEM solutions such as ArcSight, Splunk, LogRhythm, AlienVault, etc.

Hands on experience in managing IT Network infrastructure in Meraki Dashboard (Access points, Switches etc.).

Experience in configuring, upgrading and verifying the NX-OS operation system.

Experience configuring and troubleshooting Virtual Device Context and VPC in Nexus 7k series switches

Given support for RADIUS and TACACS+ servers for network device access control.

Involved in physical stacking and racking of Network equipment in huge datacenter environment.

Good knowledge in working with Infoblox Grid manager to ensure high availability DNS, DHCP and IPAM services throughout the distributed network.cs

Experience with convert Cisco ASA rules over to the Juniper SRX based solution.

Responsible for Cisco ASA, Juniper SRX firewall administration across customer networks.

Configuration and troubleshooting of CSM, integration with ASA devices.

Experience in managing security policies with CSM, integrated with ASA 5500 devices.

Having good hands on experience in working with monitoring and managing the nodes within the network using Network monitoring tools like Solarwinds.

Configuring and troubleshooting Ether channels between network devices during disruptions in the network.

Experience in Routing protocol configurations (RIP, EIGRP, OSPF, and BGP).

Provided support for VOIP applications, Call Manager, Call Center and other WLAN network equipment (Access Points, Cradle points and DSL Modems).

Experience with different Network Management Tools and Sniffers like Wireshark (ethereal), HP-Open view, RSA envision, and Cisco works to support 24 x 7 Network Operation Center.

Experience with Project documentation tools & implementing and maintaining network monitoring systems and experience with developing network design documentation and presentations using VISIO.

CERTIFICATIONS

Cisco Certified Network Associate (CCNA)

Cisco Certified Network Professional (CCNP)

TECHNICAL SKILLS

Operating Systems

Cisco IOS, NX OS, DOS, Windows 95/98, Windows NT/2000/XP/Vista/7/8

IP Routing

RIPv1, RIPv2, BGP, OSPF, IGRP, EIGRP

Communication Protocols

TCP/IP, UDP, DHCP, DNS, ICMP, SNMP, ARP, RARP, PPP, HDLC and ISDN, WAP, WEP, SOAP, XML, REST

Topologies

Frame Relay, ATM, T1, T3, OC3, OC12, OC48, Ethernet, Cable Modem, XDSL and WLAN

Network Peripherals

Juniper, Cisco switches (2900, 2924, 2950, 3550, 3560, 4000, 5500, 6500, 6509, 6513,), Cisco routers (2600, 2800, 3640, 3700, 3825, 7200, 7204, 7206), Cisco ASA 5500 series, Cisco 1200 Aironet Access Points, CSU/DSUs, network cards and Modems, Cisco Meraki and Junipers

Management Tools

MRTG, HP Open view, Cisco WAN manager, Cisco works 2000

Programming Skills

C, C++, OOPS, Dot Net, Python and Back end: SQL server

Sniffers

Ethereal (Wireshark)

Software

Microsoft Office 97/2000, MS Visio

Firewall Security

Cisco ASA, Checkpoint, Palo Alto, Blue Coat Proxy

AAA Architecture

TACACS+, RADIUS, Cisco ACS

Professional Experience

AIG, Fort Worth, TX

Data Center Network Engineer Jan 2018 – Present

Responsibilities-

Responsible for installing, configuring, troubleshooting, administering and maintaining servers and Nexus devices such as Nexus 9k,7k,5k and 2k.

Worked as a Network Engineer for Design and Implementation team to upgrade the infrastructure of AIG production network.

Created visio designs for multiple projects to predict network flow before implementation in the production.

Worked on End of life of projects, integrating new switches in infrastructure replacing with EOL switches.

Involved in multiple projects at a time and assigned as primary network engineer.

Implemented company policies, technical procedures, and standards for preserving the integrity and security of data, reports, and access.

Configured Bluecoat Proxy SG Web Application Reverse Proxy for securing and accelerate public web applications.

Used Cisco ACI Fabric which is based on Cisco Nexus 9000 Series Switches and the Cisco Application Virtual Switch (AVS).

Worked on patch schedules to provide to the Hardware Services team for Rack and Stack, Installing and end to end cabling to the servers.

Interacted with the IP services team to reserve the subnets and IP’s for various projects.

Involved in Substantial Configuration & validation prior to implementation of Nexus 7K, 5K & 2K connecting to blade servers.

Design and Building Software-Defined Data Center environment, including VMware, VCenter, NSX and Cisco ACI.

Provided administration and support on Bluecoat Proxy for content filtering and internet access between site and VPN client users.

Provide technical support for enterprise customers using Splunk.

Deployment and Management of Bluecoat proxies in the forward proxy scenario as well as for security in reverse proxy scenario.

Management of F5 LTMs & GTMs (DNS) to improve web application delivery speed and replication through and between distributed global data centers.

Deploy, scale and automate network across multiple global datacenters supporting Amazon Web Services (AWS).

Worked on F5 LTM, GTM series like 4000, 5000 for the corporate applications.

Configuring Virtual Device Context in Nexus 7010.

Working with F5 load balancers and Cisco load balancers (CSM, ACE and GSS).

Configuring Cisco 6500 VSS in Distribution layer of the Data center network.

Configuring and managing F5 ASM (Application security manager). Developed security policies.

Configure and troubleshoot Juniper EX series switches.

Experience with building Ultra Low Latency Data Center Design End-to-end design approach.

Design, implementation and operational support of routing/switching protocols in complex environments including BGP, OSPF, EIGRP, Spanning Tree, 802.1q, etc.

Moving data center from one location to another location, from 6500 based data centers to Nexus based data center.

Experience with Palo Alto/ ASA/Fortinet Firewall Administration, Rule Analysis, Rule Modification

Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms.

Palo Alto design and installation (Application and URL filtering, Threat Prevention, Data Filtering). Configured and maintained IPSEC and SSL VPN's on Palo Alto Firewalls.

Hands on Experience with Spirent test center.

Worked with the Python 2 & 3 version

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

Deploying and decommissioning of Cisco Routers, Cisco switches and their respective software upgrades.

Performing troubleshooting on slow network connectivity issues, routing issues that involves OSPF, BGP and identifying the root cause of the issues.

Configure Corporate, Wireless and Lab Devices which includes Bandwidth Upgrade, Adding New Devices, Decom the Devices, Testing (Pilot).

Environment: Nexus 9k,7k,5k and 2k, Palo Alto firewall F5 Load Balancer, F5 LTMs & GTMs (DNS), AWS, TCP/IP, Routing and Switching, VLAN’s, VTP, STP, Trunking, Ether channels, Nexus 7k, and ASR1k, VLANS and WLAN, routing protocol OSPF, EIGRP, BGP with Access Control lists.

T-MOBILE, Parsippany, NJ

Sr. Network Engineer Aug 2016 – Dec 2017

Responsible for configuration, maintenance and troubleshooting routing protocols BGP, EIGRP and OSPF on Cisco Routers 7613, 7201, 2812, 2811 and 3945E.

Worked on the implementation of branch routers such as Juniper MX80, MX104 and perform Junos upgrades.

Acquired hands on experience in supporting and troubleshooting 250 above remote locations within the VPN throughout US and Canada.

Configured ACI for remote Authentication, created migration plans, L2/L3 transitions & mapped traffic flow.

Remediation of firewall rules from checkpoint firewalls to Cisco ASA firewalls and their implementation.

Monitoring the traffic through Cisco catalyst switches for Detection of Intrusion using IDSM2 and its Prevention IPS.

Configuring & managing around 500+ Network & Security Devices that includes, Palo Alto Firewall, Cisco ASA, Fortinet and Juniper (NetScreen) Firewalls, F5 BigIP Load balancers and 3DNS, Blue Coat Proxies and Plug Proxies.

Provided 24/7 On-Call assistance to the clients in all WLAN network related issues in a rotation basis.

Worked in a team of designing and deploying stand-by datacenter of the giant enterprise network.

Direct report to Senior WLAN Engineer/AVP & Responsible for all WAN, LAN, VOIP, Security & IPT on his absence along with weekend support.

Migrated to Juniper EX series switches from Cisco 3500 series and 6500 series switches.

Deploying and decommission of VLANs on core Nexus 7K, 5K and its downstream devices and also configure 2k, 3k,7k series Routers.

Worked on projects/WLAN/systems/issues of small to medium complex enterprise network.

Provided wireless operations support and maintenance for network systems as a primary team member.

Working experience on PA-5020, PA-3020 series Palo Alto firewalls and Panorama.

Strong hands on experience in installing, troubleshooting, configuring Dell switches and Dell routers.

Hands on experience deploying and troubleshooting IP phone systems (Avaya wireless and Polycom).

Hands on experience in deploying, troubleshooting and configuring Cisco Meraki Layer 2 and Layer 3 switches like MS 225, MS 250 and MS 350.

Acquired knowledge in working with Meraki wireless access points MR 16, MR 18, MR 32, MR 42, MR 72 etc.

Given support for RADIUS and TACACS+ servers for network device access control.

Involved in physical stacking and racking of Network equipment in huge datacenter environment.

Configuration on BIG IP (F5) Load balancers and also monitored the Packet Flow in the load balancers.

Perform installs, configure and troubleshooting on state full inspection firewalls and inline/passive IPS/IDS sensors.

Worked on design, configuring and managing of Blue Coat Proxy Servers.

Deploying Cisco ASA 5545 and Bluecoat ProxySG (Web Security Appliance) S170 for URL Filtering Policies.

Worked on Blue Coat Proxy SG to safeguard web applications (Blacklisting and Whitelisting of web URL) in extremely untrusted environments such as guest Wi-Fi zones.

Worked on F5 BIG-IP LTM 8900, Citrix and NetScaler configured profiles, provided and ensured high availability.

Experience in providing Security using F5 BIG-IP APM and ASM.

Configure and Manage site-to- site IPSEC VPN with different partners. Troubleshoot remote access services like Cisco WLAN clients and for the users to access their enterprise network.

Knowledge of Intrusion Detection, DMZ, encryption, IPsec, proxy services, Site to Site VPN tunnels, MPLS/VPN, SSL/VPN.

Work with Load Balancing team to build connectivity to production and disaster recovery servers through F5 Big IP LTM load balancers.

Performed VRF on routers to separate router table into two routing tables.

Configuring rules and Maintaining Palo Alto Firewalls & Analysis of firewall logs using various tools

Good experience working with the Trouble Tickets on F5 Load balancers.

Gather customer requirements for network project and prepare HLD, BoM and LLD.

Provided application level redundancy and availability by deploying F5 load balancers LTM.

Designed and implemented DMZ for Web servers, Mail servers & FTP Servers using Cisco ASA5500 Firewalls.

Worked extensively on Cisco ASA 5500(5510/5540) Series, experience with convert Cisco ASA to Juniper SRX solution.

Network security including NAT/PAT, ACL, on ASA and Juniper SRX Firewalls.

Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256with Juniper SRX 550Firewalls.

Experience in managing and resolving incident tickets generated by ticketing tool Service Now.

Environment: Cisco ASA, Palo Alto Firewalls, F5 Load balancers, RADIUS and TACACS+ servers, Meraki Layer 2 and Layer 3 switches like MS 225, MS 250 and MS 350, Nexus 7K, 5K devices, Meraki wireless access points MR 1ga6, MR 18, MR 32, MR 42, MR 72 routing protocols BGP, EIGRP, OSPF and BGP, ACL, WLAN, Cisco Routers 7613, 7201, 2812, 2811 and 3945E, and Juniper MX80, MX104

ATOS, Santa Ana, CA

Sep 2015 – Jul 2016

Sr. Network Engineer

Project: Governmental IT Outsourcing Services, Inc., Orange County (DMZ & Transformation)

Worked extensively in Configuring, Monitoring and Troubleshooting Cisco ASA's 5585.

Responsible for Cisco ASA firewall administration, Rule Analysis, Rule Modification.

Implementation of Access Lists for allowing/blocking desired traffic.

Installation and Configuration of Cisco Catalyst switches 6500, 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design Document and followed the change process as per IT policy it also includes the configuration of port channel between core switches and server distribution switches.

Provided support for VOIP applications, Call Manager, Call Center and other WLAN network equipment.

Packet capturing, troubleshooting on network problems, identifying and fixing problems.

Experience working in Datacenters environment, configuration changes as per the needs of company.

Troubleshot layers 1, 2, and 3 of the OSI model on a daily basis with customers and partners.

Experience in migration of VLANS.

Performed Configuration on ASR 9K Pairs includes HSRP, Bundle Ethernet Config, Assigning DHCP profiles

Configuring objects such as Load Balancer pools for local traffic management on F5 Load Balancers

Configuring VLANs/routing/NATing with the firewalls as per the network design.

Extensive Knowledge on the implementation of Cisco ASA 5500 series and checkpoint R 75 firewalls

Implemented, configured BGP WAN routing, converting OSPF routes to BGP (OSPF in local routing).

Installed and maintained Cisco and F5 Load Balancer and documentation

Installing, configuring Cisco Catalyst switches 6500, 3750 & 3550 series and configured routing protocol OSPF, EIGRP, BGP with Access Control lists implemented as per Network Design.

Implementing, configuring, and troubleshooting various routing protocols like RIP, EIGRP, OSPF, and BGP etc.

Realignment and modification of BGP from the MPLS routers.

Created documents for various platforms including Nexus 7k, and ASR1k enabling successful deployment of new devices on the network

Strong knowledge in reviewing HLD, BoM and LLD for network projects according to customer requirements.

Configuring, implementing and troubleshooting VLAN’s, VTP, STP, Trunking, Ether channels.

Designing, implementing LAN/WAN configurations on Cisco 5K, catalyst 6500 switches.

Experience configuring Virtual Device Context in Nexus 7k series switch.

Strong knowledge on networking concepts like TCP/IP, Routing and Switching.

Designed, configured, implemented site-site VPN on cisco ASA 5500 firewall.

Having strong knowledge in AAA implementation on servers.

Implemented, configured redundancy protocols HSRP, VRRP, GLBP for Default Gateway Redundancy.

Provided Security using F5 BIG-IP APM and ASM.

Experience with configuring Load Balancing methods in F5 LTM and also configured the virtual server.

Environment: Cisco ASA 5500 series and checkpoint firewalls, F5 Load Balancer, TCP/IP, Routing and Switching, VLAN’s, VTP, STP, Trunking, Ether channels, AAA implementation on servers, Nexus 7k, and ASR1k, VLANS and WLAN. Cisco Catalyst switches 6500, 3750 & 3550, routing protocol OSPF, EIGRP, BGP with Access Control lists and maintain Brocade VDX 6740 and ICX 7250 switches

FACEBOOK, Menlo Park, CA

Sr. Network Engineer

May 2013 – Jul 2015

Involved in Substantial Configuration & validation prior to implementation of Nexus 7K, 5K & 2K connecting to blade servers.

Management of F5 LTMs & GTMs(DNS) to improve web application delivery speed and replication through and between distributed global data centers

Worked on F5 LTM, GTM series like 4000, 5000 for the corporate applications.

Experience in configuring Virtual Device Context in Nexus 7010.

Experience with building Ultra Low Latency Data Center Design End-to-end design approach.

Design, implementation and operational support of routing/switching protocols in complex environments including BGP, OSPF, EIGRP, Spanning Tree, 802.1q, etc.

Hands on Experience with Spirent test center.

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

Deploying and decommissioning of Cisco Routers, Cisco switches and their respective software upgrades.

Performing the Firewall ACL requests change for various clients by collecting source and destination details.

Policy management and changes in Juniper SRX firewall

Administration and troubleshoot of Juniper SRX 3000, 4000, 5000 Series firewalls.

Performing troubleshooting on slow network connectivity issues, routing issues that involves OSPF, BGP and identifying the root cause of the issues.

Configure Corporate, Wireless and Lab Devices which includes Bandwidth Upgrade, Adding New Devices, Decom the Devices, Testing(Pilot).

Environment: Juniper SRX 3000, 4000, 5000 Series firewall F5 Load Balancer, F5 LTMs & GTMs(DNS), TCP/IP, Routing and Switching, VLAN’s, VTP, STP, Trunking, Ether channels, Nexus 7k, and ASR1k, VLANS and WLAN, routing protocol OSPF, EIGRP, BGP with Access Control lists

AT&T, Middletown NJ

Sr. Data Network Engineer

Jul 2011 – Apr 2013

Configured and designed LAN networks with Access layer switches such as Cisco 4510, 4948,4507 switches.

Setting up VLANS and configuring ISL trunk on Fast-Ethernet channel between Switches.

Configuring Virtual Chassis for Juniper switches EX-4200, Firewalls SRX-210.

Configuring VLAN, Spanning tree, VSTP, SNMP on EX series switches.

Understand the JUNOS platform and worked with IOS upgrade of Juniper devices.

Designed and implemented security policies using ACL, firewall.

Design and configuring of OSPF, BGP on Juniper Routers and SRX Firewalls.

Configured routing policy for BGP. Switching related tasks included implementing VLANs and configuring ISL trunk and 802.1Q on Fast-Ethernet channel between switches.

Troubleshoot and technical support for Global wide area network consisting of Multi-Protocol label switching MPLS, VPN and point-to point site.

Troubleshooting on network problems with Wire shark, identify problem and fix.

Understand the JUNOS platform and worked with IOS upgrade of Juniper devices

Redistribution of routing protocols and Frame-Relay configurations.

Configuring and troubleshooting type of routing to route traffic flow per customer requirement as primary, backup/load balanced and load splitting.

Configured VLANs on a switch for inter-VLAN communication. Configured VLAN Trunking Protocol (VTP) on Core Switches. Configured various LAN switches such as CISCO CAT 2900, 3550, 4500, 6509 switches for STP, VTP Domain, VLAN, Trunking, Fast Ether Channel configuration.

Documented all the work done by using Visio, Excel, MS word.

Environment: F5 Load Balancer, Switching, VLAN’s, VTP, STP, Trunking, inter-VLAN communication Ether channels, VLANS and WLAN, routing protocol OSPF, EIGRP, BGP with Access Control lists, JUNOS platform and worked with IOS upgrade of Juniper devices

ORIENTAL INSURANCE, India

Network Support Engineer Mar 2009 – Jun 2011

Assigned a project to set up LAN. Worked on the entire project from cabling to IP addressing assignment.

Supporting wide range of products from Cisco Systems, Troubleshooting of Routers and Switches.

Configuration and installation of Cisco Routers and Switches.

Configuring and working with Cisco Routers and Switches using protocols like RIP, EIGRP, and OSPF.

Manage the Routing protocol and Encapsulation Protocol.

Troubleshooting of WAN connectivity problems.

Configured STP for loop prevention and VTP for Inter-VLAN Routing.

Configuration of Standard and Extended access-lists.

Coordinating with Filed Engineers in trouble shooting of WAN connectivity problems.

Coordinating with tasks assigned to Field engineers.

Configured VPN for the remote and site-to-site access.

Part of troubleshooting team for checkpoint firewall.

Worked on Access Control List (ACL), NAT/PAT rules.

Environment: Cisco Routers, Switches, WAN, LAN, Trouble Shooting, Checkpoint Firewall, Access Control List (ACL), NAT/PAT rules

EDUCATION

Bachelor of Technology, Computer Science Engineering

Jawaharlal Nehru Technological University

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