Deepak Mullangi

• Designed, implemented, and supported enterprise network solutions utilizing technologies such as Cisco, Juniper, Aruba, Palo Alto, and Fortinet
• Implemented and enforced security policies, protocols, and procedures to protect the network infrastructure from unauthorized access, attacks, and vulnerabilities
• Implemented and managed network monitoring tools to proactively identify and address potential issues before they impact the network
• Conducted regular analysis of network traffic and performance to identify areas for improvement
• Collaborated with security department to address emerging threats relevant to network infrastructure
• Led network upgrades and migrations, including deploying new switches, routers, firewalls, and implementing updated configurations
• Configured and troubleshot network protocols and services like OSPF, BGP, MPLS, VPNs, VLANs, and spanning tree
• Managed network operations, monitoring, troubleshooting and maintenance for high availability
• Responded to incidents and conducted root cause analysis
• Troubleshooting of hardware/software platforms/applications and EPC Network core, distribution, and access layers
• Maintained encrypted vMotion network connectivity using VMware NSX for security segmentation
• IOS-XE and IOS-XR devices, as well as other Cisco devices, should be properly configured and maintained to guarantee network performance
• To guarantee effective data storage and compliance with data governance guidelines, the NODS developed and implemented data retention policies
• Installed and configured Cisco switches for a new building with 500 nodes, including trunking, VLANs for wireless and VOIP, and network access control
• Documented network architecture changes
• Software-Defined Access protocols were implemented, improving network scalability and agility while guaranteeing industry standards were met
• Installed and configured Cisco switches for a new building with an500 nodes, including trunking, VLANs for wireless and VOIP, and network access control
• Documented network architecture changes
• Responsible for the creation and execution of an all-encompassing network security framework, incorporating Zscaler, Cisco ASA, and Palo Alto firewalls to enable safe cloud connectivity
• VPN solutions have been put into place to guarantee employees' safe remote access
• Testing Layer2 and Layer3 protocols like BGP, OSPF, and MPLS using commercially available Test tools
• Testing for all phases like Unit, Integration, IOT, Feature, Performance and Services
• Advanced understanding of web protocols – HTTP, HTTPS, etc…
• Designed and optimized fiber-optic networks for high-capacity data transfer, minimizing signal loss and maximizing network efficiency
• Open Shortest Path First (OSPF) networks were designed, set up, and scaled to support quick company expansion while preserving high availability
• Successfully led migration to Cisco DNA Center for centralized management and automation of over 500 sites
• Competent in cloud environments, including Microsoft Azure and Oracle Cloud Infrastructure (OCI
• Extensive experience managing Cisco ASA firewall deployments across infrastructure to implement segmentation
• Standardized wireless network design using Aruba to support 10,000 concurrent users across 250 medical facilities.a:
• In-depth knowledge designing and integrating InfiniBand networks with Mellanox switches
• Developed applications leveraging CUDA and DOCA SDKs for low-latency offload computing
• Effectively used Cisco Prime, DNAC, DCNM, and EPNM for network configuration, management, and monitoring, increasing the dependability and efficiency of the network
• Administered and maintained DNAC infrastructure, monitoring network health and implementing proactive measures to prevent downtime
• Configuration, Implementation, and troubleshooting with multi-vendor Service Provider Environment
• Monitoring and troubleshooting Layer 2 and Layer 3 protocols like OSPF, BGP, MPLS, VRR, P, and VPLS
• Migration of existing IPSEC VPN tunnels from pre-shared key to Certificate Authority for the purpose of scaling
• Developed, put into practice, and oversaw test beds and network labs to evaluate SDN technologies and network protocols in a reliable testing environment
• Implementation of SDN solutions, which centralized control and automated network tasks to optimize scalability, flexibility, and performance
• Oversaw the effective deployment of Velocloud SD-WAN technology, maximizing network throughput and guaranteeing a smooth experience for branch and distant offices
• Developed Python scripts to automate network provisioning and configuration for routers and switches, increasing efficiency by 20%
• Established network segmentation plan for secure remote access VPN using firewalls, ACLs and QoS mechanisms
• Monitored VPN performance and resolved connectivity issues for 100+ mobile users
• Cisco Core Routers and Gateways, Cisco L2 L3 Firewalls and Cisco Unified Border Element (CUBE)
• Juniper Routers and Service Delivery Gateways
• Switches 2950,2960,3550, 3750, 4500, and 6500
• Planned and executed wireless network upgrades, achieving improved coverage and performance through strategic placement of access points
• Setting up and repairing Versa SDWAN hardware
• Extensive familiarity with Versa Director, Controllers, Hub, Zero Touch, and work on-site template creation
• Resolve Internet, MPLS, and WBS transports are used to provide IPSEC overlay communication between SD-WAN appliances and SD-WAN controllers
• SDWAN systems and services certification, testing, and verification
• Conducted regular maintenance and updates to network equipment and software, ensuring compliance with industry standards
• Load balancers CSS, CSM, F5-LTM
• Firewalls/Security IPS, IDS, ASA
• Network Simulators and Monitoring Tools IXIA, Spirent, Wireshark, NetScout, etc
• Routing EIGR P, OSPF, RIPv1/RIPv2, BGP
• LANs, Dot1Q, VTP, STP, RSTP, VLAN Maps, HSRP, VRRP, GLBP, CEF, DCEF, Port Security, Private-VLANS, Ether-Channels, LACP, PAGP
• Ethernet, Fast Ethernet, Gigabit Ethernet, Frame Relay, Leased Lines PPP, HDLC
• Configuring and Monitoring of Cisco ASA 5500 for their use in large service provider networks
• Experience with Juniper NetScreen 520M Firewall and Palo Alto network firewall
• Involved in the Integration and configuration of Cisco and Openet LTE nodes
• Maintained a highly secure network environment by making sure Aruba ClearPass configurations complied with network access control (NAC) compliance standards
• Troubleshooting the wireless data core networks, architecture, protocols, interfaces, and wireless operator's end-end network
• Ensured AWS network configurations complied with industry regulations and best practices, maintaining a high level of security and data protection
• Created and managed Aruba Wireless networks, guaranteeing wide coverage, excellent availability, and smooth roaming for wireless users
• Working on deployment/configuration of LWAPs, WLC, WDS, and 802.11 wireless devices
• Involved in the Design and troubleshooting of LTE, UMTS, and GPRS
• Working on Aruba Wireless LAN Implementation for 11n Infrastructure across the Corporate Network
• Involved in the configuration troubleshooting of routing protocols: MP-BGP, OSPF, LDP, EIGRP, RIP, and BGP v4
• Configured network access servers for AAA Security Using Juniper IC Infranet Controllers MAG-SM360, MAG-4610
• Involved in the design of the Nexus POD Environment
• Designing advanced networking solutions including Quality of Service QoS, Virtual Routing and Forwarding VRF, and route redistribution
• Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256 with PIX Firewalls
• Configuring the VIPs, pools, rules, and profiles on F5 LTM 10.x and 11.x versions
• Experience with LTE call flows, core system interfaces, and protocols such as S1-MME, S1-U, S6a, S11, S5/S8, GTPv2, and CCR/CCI
• Substantial lab testing validation prior to implementation of Nexus 7K, 5K 2K connecting to blade servers
• Experience working on Bluecoat Proxy, IXIA, and Landslide and troubleshooting using IRIS, Netscout, nGenius, and Wireshark

Environment: Java 1.7/ 1.8, JSP, Spring, AZURE,AWS, EJB, JMS, XML, XSLT, JDBC, AJAX, HTML, CSS, Oauth 2.0, Bootstrap, JavaScript, Oracle 11g/12c, Angular JS 7/8, Typescript, Restful, SOAP, jQuery, Hibernate, SD-WAN,PostgreSQL, JPA, Micro Services, Apache Camel, PL/SQL, JBoss, Docker, Log4J, Maven, Jenkins, Unix, Linux, Cassandra DB, Junit, Apache Tomcat, Mockito, JIRA, AWS in ZSCALER Network.

• Configured, deployed, and maintained firewall solutions to ensure network security and compliance
• Configured and managed network switches to optimize performance, reliability, and scalability
• Performed design, implementation, testing, deployment, troubleshooting, and maintenance for LAN/WAN/Wireless network devices, routers, switches, Cisco WLCs, APs, computers, servers, printers, scanners, and interactive smart boards in designated networks
• Created and executed network architectures in Azure, incorporating Palo Alto Networks for seamless connectivity and cutting-edge threat prevention
• Served as technical support for a migration project from an NT domain to Active Directory
• Planned and oversaw the transition of services like DNS, DHCP and logon authentication while maintaining uptime
• Azure VPN gateways for safe site-to-site connections were configured and maintained
• Conducted site surveys to determine optimal placement of access points and antennas, ensuring proper coverage and capacity for each environment
• Worked in tandem with Cisco ASA and Palo Alto to provide a comprehensive security strategy
• Successfully combined Cisco NSO with other platforms and tools for network management, building an ecosystem of network automation
• Provided advanced support resolving issues for Humana's 500+ site Cisco SD-WAN deployment as a Cisco Systems engineer
• Experience with Layer 2 Protocols such as ARP, 802.3ad, 802.1Q, 802.1D, 802.1W, 802.1S, 802.3AF, 802.3AT, VLAN, JunOS, ZTP, SPAN, RSPAN
• Created and implemented route filtering and Access Control Lists (ACLs) as well as other network security measures to guard against threats and illegal access
• Improved network visibility and comprehension by maintaining thorough network documentation with the aid of NetBrain, Cisco Prime, and other tools
• Contributed significantly to the optimization and troubleshooting of Cisco NSO configurations and YANG data models, guaranteeing effective network operations
• Transformed the NODS to the expanding network data with success, guaranteeing the system's dependability and performance
• Implemented BGP routing protocols to facilitate dynamic routing between AWS and Zscaler networks, enhancing network scalability and resilience
• Configured Cisco Wireless Access Points (AP's), Cisco Wireless Controllers 3650/9800 series and Cisco ISE (3.0)/Prime
• Created automation scripts to improve lab testing procedures, allowing for more thorough and effective testing of SDN and network protocol implementations
• Developed Bash and Python utilities for header/log parsing and network throughput testing
• Installed Active Directory, DHCP, DNS Server and configured DHCP scopes on 2019 R2 server (Hyper-V) and VMWare for end-to-end connection with ISE server (RADIUS/TACACS+)
• Designed and implemented IPsec VPN tunnelling (GRE, DMVPN) of LAN/WAN/WLAN infrastructure networks for deploying hub and spoke sites
• Created and verified templates for configuring the routers, switches, security devices, and WLAN controllers
• Installed licenses on routers, switches, security, and WLAN Controllers
• Upgraded Cat IOS/XE/XR for routers, switches, security appliances, and WLC by TFTP/FTP servers for improving high performance networks
• Implemented and deployed the wireless network with site survey by and Ekahau and AirMagnet survey Pro
• Aruba ClearPass was integrated to provide secure network access control, guaranteeing that only authorized users and devices may access the network
• Ensured quick incident resolution by offering expert-level troubleshooting support for network issues pertaining to Aruba Wireless, Aruba ClearPass, and Velocloud
• Participated in design, build, and test activities related to new WiFi network, and upgraded network for technology/platform evaluations with Cisco Air OS and IOS XE
• Resolved wireless network issues by using WireShark, Air Magnet, Ekahau Site Survey (Heatmap)
• Created and maintained network documentation, including diagrams, configurations, and policies, utilizing tools such as Visio and SharePoint
• Received and responded to incoming calls, emails, and work orders regarding computer and network problems
• Participated in design, build, and test activities related to new WiFi network, and upgraded network for technology/platform evaluations
• Resolved wireless network issues by using WireShark, Air Magnet, Ekahau Site Survey (Heatmap)

Environment: Cisco routers (1600, 3600, 7300) and Cisco switches (6509, 3550, 4500, 2900), Nexus (7K, 5K & 2K),Netbrain, NODS ,Routing protocols (EIGRP, OSPF, BGP), MPLS, Switching Protocols (VTP, STP, GLBP, HSRP), F5 load balancer, NSX, Cisco PIX (525, 515E), ASA (5540, 5510) firewall, Aruba, NAC, Palo Alto firewall.

• Provide Technical support such as troubleshooting data, voice, Video, and managed services for Spectrum Enterprise
• Proficiency in supporting IP Telephony, Linux, Microsoft Server, Windows, and SolarWinds monitoring tools
• Worked with Fiber-based network and managed services such as Fiber Internet Access, High-Speed Data, Ethernet, Managed Network Services, Managed Security Services, Managed Wi-Fi Services, Enterprise Trunking, Hosted Voice, and Enterprise TV Services
• Developed thorough documentation for APIs and led training sessions to improve team members' ability to use and administer network APIs
• Configured complex IP/MPLS and transport networks integrating Juniper, Cisco and ADVA equipment
• Automated provisioning of carrier Ethernet and virtual private wire services with YANG models and NetConf scripts
• Author code and plugins for networking daemons like Quagga supporting large IP/MPLS infrastructures
• Managed carrier Ethernet networks, VPNs and SDNs
• Deployed and managed SD-WAN solutions to enhance network connectivity and performance
• Oversaw and supervised the NODS's data ingestion and transformation procedures, making sure that correct data processing and archiving from a variety of network sources was achieved.
• Tested, troubleshoot, and configured Provider Edge Routers (Juniper MX960, and Cisco ASR 9000), Distribution switches (Juniper QFX 5100 series, Cisco 3850/3750), Optical Networking Units GEPON (Juniper EX4200, Cisco ME 3600, Sumitomo, Alcatel, Rad220, Adva 116), and CPE with managed devices (Adva 114, RAD 203, Cisco ME 4300, Cisco ASR 920, Juniper EX-4200, ADVA 825, Sumitomo FTE 6083/6183, Cisco ISR 1111, LTE, FortiGate Firewall, Meraki Wireless.
• Excellent insights into network traffic and performance were obtained by successfully integrating NetScout for network performance monitoring.
• Tested, configured, and troubleshooting Layer2/3 network protocols: PRI, SIP, RTP, EPL, EVPL, EPLAN, FIA, DIA EIGRP, OSPF(v3), IS-IS, BGP4(MP-BGP), MPLS, SD-WAN, VRF, vPC, L3VPN, NAT, VXLAN, VTEP, LISP, OMP, VLANs, STP, VTP, SNMP, DNS, DHCP, QoS, VoIP, 802.1x, IPv4/IPv6, and IPsec VPN/GRE/DMVPN/DTLS tunnelling.
• Accessed and operated hybrid fiber coax (HFC), data over cable service interface specification (DOCSIS) and cable modem termination system (CMTS) and transport technologies course wave division multiplexing (CWDM), dense wave division multiplexing (DWDM), synchronous optical networking (SONET), T1, Ethernet and Wireless technologies.
• Failed and investigated networks with network protocols, policies, Radio Frequency, Routers, Layer2 switches, VPN, CWDM, hybrid-fiber coax (HFC), Wi-Fi, and VoIP platforms.

Environment: Netbrain,Switches and Cisco 340/12000 /7200/3845/3600/2800 routers, Cisco NCS 540/520, MPLS, VPN, Cisco BPA, Cisco NSO, Cisco ASA5510, Checkpoint, F5 Load Balancer, Cisco Nexus 7K/6K/5K, Juniper M and MX series routers

• Utilized Cisco Nexus 5000 series switches and Cisco 3800 series routers to construct 10 gigabit networks
• Participated in the configuration and implementation of Cisco 2950, 3500, 5500, and 6500 Series switches and Cisco 7600, 7200, and 3800 series composite network models
• Installing, configuring, and maintaining Cisco Switches (series 2900, 3500, 7600, 3850, and 6800), Cisco Routers (series 4800, 3800, 3600, 2900, 1900, and 800), and Juniper Routers on a regular basis
• Configured EIGRP, PPP, BGP, and OSPF routing, and participated in routing protocol configuration and troubleshooting
• Policies for IP access filters were set up, and Juniper SRX firewall policies were made and set up
• Participated in the replacement of Juniper MX480 and MX960 FPCs and PICs
• Performed advanced troubleshooting for the SDWAN deployment in both ISP and network infrastructure on both Cisco Viptela SDWAN Solution and versa, as well as escalations and activations for new clients
• Developed the hardware for the Cisco Nexus 9K family of switches, which is based on Cisco ACI
• Plan and carry out Cisco ACI in data centres, think up a technique that considers ending clients and engineers
• Configured Nexus 7010, including NX-OS Virtual Port Channels, Nexus port profiles, Nexus Versions 4.2 and 5.0, and Nexus VPC peer links
• Managed the configuration inventories and made timely revisions to Cisco ACI policies
• Participated in the development of Shell and PERL scripts to manage files and performed regular TFTP management for configuration files to store revisions
• Responsible for SRX345, SRX550 firewall network support
• Utilization of diagnostic security and networking tools like NMAP, Wireshark, and others
• Make daily use of Command Line Prompts, NMAP, and Wireshark
• Redesigned the infrastructure for Internet connectivity to meet bandwidth requirements
• On Catalyst 6800 switches, configured VLAN routing and HSRP trucking 802.1Q
• Oversaw UNIX/Linux workstation, server, and peripheral p`erformance tuning and monitoring
• Implemented HA in the Active/Standby mode, synchronizing session and configuration on multiple pairs of Palo Alto Firewalls
• Based on Riverbed WAN optimizers and load balancers
• Using Forti manager to provision firewall policies on Fortinet FortiGate appliances
• Designed VLANs with 802.1q labelling
• Designed trunk groups, ether channels, and a spanning tree for the construction of an architecture for access/distribution and core layer switching
• Analysed and monitored the Intrusion Detection Systems (IDS) and the Intrusion Prevention Systems (IPS) in order to find security problems that needed to be fixed
• Work with the Transport Team, LECs, and Internet Service Providers to resolve bandwidth issues for retail sites and, if necessary, upgrade bandwidth
• Worked basically as a piece of the security group and everyday errands included firewall rule investigation, rule change, and organization
• Recommend network design changes/enhancements for improved system availability and performance
• Following up with various application teams to monitor migrations and the decommissioning procedure to guarantee that project target dates are met to maintain business continuity

Environment: Cisco Routers (series 4800, 3800, 3600, 2900, 1900, and 800), and Juniper Routers ,Cisco ACI ,SRX345, SRX550 firewall network ,MPLS, Switching Protocols (VTP, STP, GLBP, HSRP), F5 load balancer, NSX, Cisco PIX (525, 515E), ASA (5540, 5510) firewall, Palo Alto firewall, Configured Nexus 7010, including NX-OS Virtual Port Channels, Wire shark, NMAP.

• Configured Cisco routers, ASA firewalls, and switches in customer locations
• Configured VLANs on multiple catalyst switches, troubleshot TCP/IP network issues, and administered network devices
• Worked extensively on Checkpoint firewalls to analyze firewall change requests and incorporate new policies into existing policies while maintaining security standards
• LAN and WAN installation, configuration, and support and IOS updates (Cisco routers and switches)
• Troubleshooted and repaired network-related problems, system failures, switching and routing
• Identified and diagnosed network configuration and performance irregularities
• Developed procedures to respond to these irregularities in a timely manner
• Provided timely issue resolutions by evaluating, tracking, and escalating
• Implemented network monitoring tools to proactively identify and resolve issues, maintaining optimal network performance
• Managed all requests and problems reported
• Designed Python scripts to implement test sequences and reused some existing Python scripts
• Troubleshooted and debugged Python scripts
• Worked, configured, and troubleshooted Cisco ACI, Layer 2/Layer 3-out, BGP, and OSFP
• Designed and worked on VxLAN BGP-EVPN Cisco N9K and Extended Leaf in Cisco ACI
• Write Linux shell scripts, python tools, and documentation as needed during testing
• Troubleshoot OSPF, Cisco ACI, OTV, Cisco ISR 4431, L2/L3 DCI issues, Layer 2 issues, and MPLS
• Strong troubleshooting skills
• Created, maintained, and improved network support documentation and processes
• Recommended and performed upgrades on systems to ensure uptime
• Ensured the infrastructure was properly monitored and that alerts regarding network outages were addressed in a timely manner.

Environment: OSPF, Cisco ACI, OTV, Cisco ISR 4431, L2/L3 DCI, VxLAN BGP-EVPN Cisco N9K, Cisco ACI, Layer 2/Layer 3-out, BGP, and OSFP