Network Engineer
Resume:
Full Name: BALA KRISHNA NYAMTHABAD
Sr. Network Engineer.
Southfield, MI. 48034.
***********.***********@*****.***
PROFESSIONAL SUMMARY
Network engineering professional with over 8 years of experience in network design, implementation, troubleshooting and management of large-scale enterprise networks.
Extensive work experience with Cisco Routers, Cisco Switches, Load Balancers and Firewalls.
Experience working with 2600, 2900, 3600, 3800,3900, 7200, 7600 series Cisco Routers
Proficient in configuring Cisco Catalyst 2900,2960, 3560, 3750, 4500, 4900, 6500 series and Nexus 2248, 5548 and 7010 switches.
Implemented Quality of Service throughout the network infrastructure and was responsible for policy routing.
Expert in configuration of Virtual Local Area Networks VLANS using Cisco routers and multi-layer Switches and supporting STP, RSTP, PVST, RPVST along with trouble shooting of inter VLAN routing and VLAN trunking using 802.1q.
Expertise in configuration of routing protocols and deployment of OSPF, EIGRP, BGP and policy routing over Cisco routers.
Thorough understanding of VPN technologies like IPSec, GRE tunneling, MPLS for remote access security.
Experience deploying BIG-IP F5LTM Load Balancers for load balancing and traffic management of business application.
Worked on F5 LTM, GTM series like 6400, 6800, 8800 for the corporate applications and their availability.
Expert in Data Center Technologies such as vPC, VDC, VSS, STP, FCoE, OTV FabricPath
Supporting EIGRP and BGP based PwC network by resolving level 2 3 problems of internal teams external customers of all locations.
Implemented redundancy with HSRP, VRRP, GLBP, Ether channel technology LACP, PAgP etc.
Development of feature test/interoperability test plans with Cisco MDS feature Fibre Channel, FCIP, FCoE.
Implemented traffic filters using Standard and Extended access-lists, Distribute-Lists, Route Maps and route manipulation using Offset-list.
Managed inventory of all network hardware.
Management and monitoring by use of SSH, Syslog, SNMP, NTP, NMTP.
Knowledge in implementing and configuring F5 Big-IP LTM-6400 load balancers.
Network security skills include Telnet, SDM, NAT/PAT, ACLs, AAA, ASA, FWSM, PIX firewall.
Worked on T1/E1/T3 technologies and different LAN WAN/WLAN technologies
Performed professional level documentation using Visio diagrams.
Configuring BGP/OSPF routing policies and designs, worked on implementation strategies for the expansion of the MPLS VPN networks.
Experience in designing MPLS VPN and QoS for architecture using Cisco multi-layer switches.
Effective team player with an aptitude to learn and ability to prioritize, organize and accomplish multiple tasks, both as part of a team and independently.
Excellent customer management/resolution, problem solving and debugging skills with good verbal/written communications and presentation skills.
Expertise in maintenance of layer2 switching tasks which advocate VLAN, VTP, STP, RSTP, PVST, RPVST, configuring of ether channel with LACP and PAGP along with troubleshooting of inter-VLAN routing.
TECHNICAL SKILLS AND ARE OF EXPERTISE:
Routers
Cisco routers 1700, 1800, 2500, 2600, 2800, 2900, 3200, 3600, 3700, 3800, 4000, 7600, Juniper Routers like, M320 and MX80
Switches
Cisco switches: - Layer 2 2900 series, Layer 3 3560, 3750, 4500, 6500, Avaya switches, juniper switches like EX2200, EX2500
Network Management Tools
Cisco Network Pulse, Net Voyant, HP Service Desk, Service Now, HP Network Automation, IP Plan, CMDB, LMDB, IP Angry Scan, NMTP,IDS IPS, ACL, Netflow Analyzer, Smokeping, CS-MARS.
VPN
Checkpoint NGX R60, NG AI R55, VPN1 pro, Secure Remote/Client, License management, Cisco works 2000
Network/ Security Services
DNS, DHCP, WINS.
Protocols/ Services
Routing Protocols RIP v1 v2, IGRP, EIGRP, OSPF, BGP, TCP/IP, PPP, HDLC, Frame Relay, ATM, MPLS
Operating Systems
Windows XP/2000/20003/NT/7, UNIX, OSX
Reports
Microsoft Visio pro.
Firewall Security
Checkpoint, Cisco ASA, Juniper SRX.
Scripting Automation
Python and Pearl
PROFESSIONAL WORK EXPERIENCE:
Client: Surf Internet – Byron, MI. Oct 2024 – Till Date.
Role: Sr. Network Engineer
Responsibilities:
Extensive worked on BMC Remedy for creating the Change Requests CRQ's, Work Orders, and Incident Management.
Implementing, configuring, and troubleshooting various routing protocols like RIP, EIGRP, OSPF, and BGP.
Performing network monitoring, providing analysis using various tools like WireShark, Solarwinds, Solaris etc.
Configured ACLs in Cisco 5540 ASA firewall for Internet Access requests for servers, Protocol Handling, Object Grouping and NAT/PAT, ISE, NAC.
Configured ASA 5540 to ensure high-end security on the network with ACLs and Firewall.
Configured and deployed BIG-IP LTM 8900 for providing application redundancy and load balancing.
Implemented Quality of Service QOS, Policy Maps, Class-maps, Policy Routing in the network infrastructure throughout all the different sites.
Played responsible role for implementing, engineering, level 2 support of existing network technologies / services integration of new network technologies / services
Worked with Cisco Layer 3 switches 3560, 3750, 4500, 6500 Cisco Nexus 5000 and 7000 in multi VLAN environment with the use of inter-VLAN routing, 802.1Q trunk, and ether channel.
Key contributions include troubleshooting of complex LAN /WAN/WLAN infrastructure that include routing protocols EIGRP, OSPF,BGP,RIPv2 HSRP.
Performed route filtering and route manipulation by applying distribute-lists, route-maps offset lists respectively.
Tested various BGP attributes like local preference, MED, Weight and replicated customer issues in the testing environment lab.
Designed WAN structure to prevent single point of failure in case of link failure.
Configured PVSTP for loop prevention and VTP for Inter-VLAN Routing.
Configured maintained IPSEC Site-to-Site VPN.
Involved in design, implementation and configuration of HSRP for load balancing on L3 switches on different location of office on the switched network.
Worked on change management documentation of Network infrastructure design using Microsoft Visio.
Perform setup of test scenarios, both hardware and software components, and perform troubleshooting.
Experience working in Datacenter environment, configuration changes as per the needs of company.
Configuring, implementing and troubleshooting VLAN's, VTP, STP, Trunking, Ether channels.
Provided support for troubleshooting and resolving Customer and user reported issues.
Worked with Network Engineer's in the installation and configuration of firewalls.
Managed Plan of Record with PLMs/SE/Sales/Marketing and Interlock with Juniper's strategic customers, monitoring product lines of Juniper routing/switching/security portfolio MX, PTX, EX, SRX.
Deploying and decommission of VLANs on core ASR 9K, Nexus 7K, 5K and its downstream devices.
Experience configuring Virtual Device Context in Nexus 7k series switch.
Convert Branch WAN links from TDM circuits to MPLS and to convert encryption from IPSec/GRE to GetVPN.
Implemented and configured various Lucent dense-wave-division multiplexing products as well as high speed Ethernet over SONET multiplexors including the Wavestar 400G, 800G, 1.6T
Troubleshoot Cisco Applications, network issues and custom products. Network: Cisco Catalyst 6K series, MDS9000 series
Worked in data center to manage tickets, apply diagnostic methods to troubleshoot data center equipment. Pulled required inventory as defined by inventory process. Updated inventory systems as required.
Worked on F5 LTM, GTM series like 6400, 6800, 8800 and Radware for the corporate applications and their availability.
Completed the HSS study and draft on Performance Management PM counters and KPIs and Fault Management FM events and alarms for Synchrony financial NMTP
Administered the Linux, Windows, OpenStack, Netscaler, and BigIP F5 devices that make up the company's multi-tiered service architecture
Environment: BMC Remedy, Cisco ASA 5540, BIG-IP LTM 8900, QOS, Policy-maps, Class-maps, Nexus, Vlans, STP, RSTP, PVSTP, VTP, HSRP, Etherchannel, Ethernet over TDM, Ethernet over SONET,IPSec/GRE,GetVPN, BGP, OSPF, EIGRP, RIP, RIPv2 MPLS, ATM, PPP, HDLC. SNMP, TACACS, DNS, ISE, NAC, DHCP, Radius, Basics of WLA, Nexus 2K, 5K, 7K,NMTP,FM,PM.
Client: Logon Broadband – Mumbai, India. Oct 2018 – July 2022
Role: Jr. Network Engineer.
Responsibilities:
Configured RIP and EIGRP on 2600, 2900 and 3600 series Cisco routers.
Implemented VTP and trunking protocols 802.1q and ISL on 3560, 3750 and 4500 series Cisco Catalyst switches
Performed on-call support for installation and troubleshooting of the configuration issues.
Worked on installation, maintenance, and troubleshooting of LAN/WAN ISDN, Frame relay, NAT/PAT, DHCP, TCP/IP, Radius
Configured Access List Standard, Extended, and Named to allow users all over the company to access different applications and blocking others
Configured STP for loop prevention and VTP for Inter-VLAN Routing
Performed maintenance and troubleshooting of connectivity problems using PING, and Trace route
Provided Network and Security Architecture and Operations support services for Windows 2008 based web, application and database servers
Provided Technical support for improvement, upgradation, and expansion of the existing network architecture
Done troubleshooting of TCP/IP problems and connectivity issues in multi-protocol Ethernet environment
Developed test scripts using Python and assorted proprietary software tools.
Worked on FCOE protocol to encapsulate the Fibre Channel frames over Ethernet networks.
Configuring and troubleshooting multi-customer ISP network environment
Involved in network monitoring, alarm notification and acknowledgement
Install and/or Migrate Checkpoint Security Hardware systems while upgrading to the latest Checkpoint Security Software version
Utilized Solarwind tools to proactively troubleshoot Client issues
Managing and maintaining Solaris.
Troubleshoot and resolve technical uses issues.
Implementing new/changing existing data networks for various projects as per the requirement
Troubleshooting complex networks layer 1, 2 frame relay, ATM, Point to Point, ISDN to layer 3 routing with MPLS, BGP, EIGRP, OSPF and RIP protocols technical issues
Environment: RIP, EIGRP, TCP/IP, FCOE, MPLS, BGP, ACL, VTP, VLAN, Checkpoint
Client: Echo Star – Bengaluru, India. Feb 2016 – Sep 2018
Role: Jr. Network Engineer.
Responsibilities:
IOS upgrades on Catalyst 1900, 2900, 3500 series switches and 2500, 2600, 3600 series routers.
Racking, stacking, and cabling network-based, IT systems
Configuration of Access List ACL Std., Ext, Named to allow users all over the company to access different applications and blocking others.
Configuring of IP Allocation and sub netting for all applications and servers and other needs throughout company using FLSM, VLSM addressing.
Troubleshot the issues related to routing protocols.
Perform routine network maintenance checks as well as configure and manage printers, copiers, and other miscellaneous network equipment.
Installing operating systems, software and hardware on computers.
Responsible for Data Backup, System Update, Recovery and Restore, and Spyware removal.
Assisting Junior and Senior Engineers, on-site management of cable-wiring technicians
Troubleshot problems on a day to day basis and documented every issue to share it with design teams.
Implemented and configured routing protocols like EIGRP, OSPF and BGP.
Connected switches using trunk links and Ether Channel.
Responsible for maintenance and utilization of VLANs, Spanning-tree, HSRP, VTP of the switched multi-layer backbone with catalyst switches.
Implemented redundant Load balancing technique with Internet applications for switches and routers.
Support Network Technicians as they require training support for problem resolution including performing diagnostics, configuring network devices
Used Network Monitoring tool to manage, monitor and troubleshoot the network.
Configured Cisco IOS Feature Set, NAT/PAT and Simple Network Management Protocol SNMP and Network Management Technical Plans NMTP for Network Security implementation.
Environment: TCP/IP, Racking, Stacking, VLSM, IP addressing, Sub netting, Routing Protocols.
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