Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Abhishek Shah

Hamden,CT

Summary

Dedicated Network Engineer with 12+ continuous experience in designing, implementing, and managing large-scale networks with strong hands-on experience in Routing, Switching, and Security.Proven track record of optimizing network performance, ensuring high availability, and resolving complex connectivity issues.

Overview

13
13
years of professional experience
1
1
Certification

Work History

Senior Network Engineer

Digi International Inc
09.2019 - Current
  • Design, implement, and maintain BGP routing solutions for global networks and core MPLS networks for enterprise clients, ensuring high availability, improving network reliability, and reducing latency.
  • Implemented BGP route optimization techniques, such as prefix aggregation and route summarization, to reduce the size of the BGP routing table and improve network performance.
  • Troubleshot and resolved complex BGP-related issues, including route leaks, route hijacking, and BGP session failures, ensuring minimal downtime.
  • In-depth knowledge of BGP, MPLS VPN, LDP, RSVP, OSPF, and TCP/IP.
  • Conducted regular network audits to identify vulnerabilities and implemented security enhancements.
  • Utilized Wireshark and tcpdump to investigate and resolve network latency and connectivity issues.
  • Work with open-source network operating systems such as VyOS and FRR to build dynamic routing on Linux Servers.
  • Experience in working on cloud AWS cloud EC2, S3, RDS, Load Balancer, Auto Scaling with AWS command line interface and AWS python SDK.
  • Experience in Azure network, VPN and Express route, Azure DNS, Traffic Manager, and Load Balancers.
  • Configure and manage Nexus 9K, 7K, and Catalyst 3850 and 9300 as Core and aggregate switches.
  • Performed Port channeling and LACP between downstream devices for vPC configuration.
  • Configure and troubleshoot first-hop redundancy protocols such as HSRP and VRRP.
  • Proficient in programming languages such as Python for network automation tasks and automation tools like Ansible for network provisioning and configuration.
  • Configure and design DMVPN solution for enterprise clients and BGP as transport for route exchange with the main hub.
  • Configuring FTD 4100 pair in high availability for redundancy and push firewall policy through FMC.
  • Migration of existing IPSEC VPN tunnels from legacy outdated equipment to newer and secure updated hardware.
  • Configure and deploy Cisco SDWAN solutions.
  • Worked closely with the IT team to integrate network automation solutions with existing infrastructure and systems.
  • Documented network configurations, diagrams, and standard operating procedures for future reference.
  • Provided network automation support, including the development of automation scripts and tools to streamline network operations.
  • Excellent team player with good communication and leadership skills, Capable of Problem-solving, Time management, and decision-making skills with the ability to set priorities and produce results. .

Network Engineer

Vista IT Solutions
09.2010 - 09.2019
  • Install, configure and maintain Dynamic IPsec Site-site VPN on ASA 5520/5512, Several Edge routers running BGP and MPLS to Internet service providers.
  • Configuring failover for redundancy purposes for the security devices.
  • Implemented the stateful and serial failover for ASA 5520/5512 firewalls.
  • Built Pilot’s enterprise ASA 5520/5512 Active/Standby firewall.
  • Involved in designing L2VPN services and VPN-IPSEC authentication & encryption systems.
  • Migration of existing IPSEC VPN tunnels from Pre-Shared key to Certificate Authority for the purpose of scaling.
  • MPLS - WAN connectivity design for Remote sites.
  • Replace branch hardware with new 2951, 2901 routers and 2960 switches.
  • Deployed IPsec and SSL VPN for Enterprise wide users and Business partner.
  • Manage Cisco Routers and troubleshoot layer1, layer2 and layer3.
  • Responsible for the Global engineering and support of existing network services and the integration of new network technologies/services.
  • Deploy and configure Cisco WLC 2500, 5520 and 8540.
  • Substantial lab testing & validation prior to implementation of Nexus 5K & 2K connecting to blade servers.
  • Worked on troubleshooting the connectivity to servers with fabric extenders.
  • Install, configure and maintain Cisco UCS C-Series server running VMware for the VOIP system.
  • Install and configure 3CX Phone System for medium size environment.
  • Implemented L3 SVI’s and L2 VLAN, Inter VLAN Routing and HSRP configuration in Nexus.
  • Working in Establishing a Layer3 Connectivity between DC’s by changing the IP Schema
  • Created HSRP between Switches with various priorities.
  • Designed the uplinks and downlinks to maintain the stability in the Network Architect.
  • Enabled STP attack mitigation (BPDU Guard, Root Guard), disabling all unused ports and putting them in unused VLAN and ensuring DHCP attack prevention where needed.
  • Managed Meraki MS220-24P Switch and MR72 Firewall.
  • Upgrade Cisco Routers, Switches and Firewall (ASA) IOS using TFTP.
  • Configured and managed DHCP, DNS, IP Helper on Routers and Switches.
  • Designed and implement emerging technologies such as VoIP on 3CX Platform.
  • Created engineering configuration, Security Standards, documenting processes and Network documentation using Microsoft Visio.
  • Provide network support 24x7x365 for all network infrastructures in the co-operation.

Education

Master of Science - Electrical, Electronics And Communications Engineering

University of Bridgeport
Bridgeport, CT

Bachelor of Science - Electronics And Communications Engineering

SSVPS College Of Engineering
Dhule, India
05.2006

Skills

  • Network Design and Implementation
  • Wireshark Packet Capture and Analysis
  • Routing and Switching
  • Network Automation
  • Network Troubleshooting
  • Network Security
  • Firewall Management
  • VPN Configuration
  • Strong Analytical Skills
  • Excellent Communication Skills

Certification

  • CCNP - Routing & Switching
  • AWS - Advanced Networking Specialty
  • CCNP - Security Firewall Expert
  • Cisco DEVNET Associate
  • CCNA Cisco Certified Network Associate
  • CCNA Security
  • Juniper Network Associate (JNCIA)
  • Linux Essentials

Timeline

Senior Network Engineer

Digi International Inc
09.2019 - Current

Network Engineer

Vista IT Solutions
09.2010 - 09.2019

Master of Science - Electrical, Electronics And Communications Engineering

University of Bridgeport

Bachelor of Science - Electronics And Communications Engineering

SSVPS College Of Engineering

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Abhishek Shah