Nazmul Hasan Email and Phone Number

KEY ROLES AND RESPONSIBILITY-++ Configuration and Troubleshooting on PA-200, PA-800, PA3K, PA5K. ++ Responsible for providing front line technical support to debug complex network security problems by replicating the customer issues of diverse scope. ++ As a Senior escalation engineer, I am responsible for dealing with escalation cases from L1/L2 level to debug complex network security problems, also deal with critical incidents. ++ Issues related to Dataplane, Management plane are taken care as support. Configuration and Troubleshooting Related to globalProtect and IPsec, User id, Policies, etc. ++ Configure & orchestrate SD WAN (Viptela) for remote sites ++ Automate the branch with zero touch provisioning ++ Configuring security zones & vrf' to control the traffic on SDWAN ++ Implementing the Edge HA for all branch locations ++ Strong experience with SDWAN routing protocols OSPF and BGP ++ Experience with SDWAN HA, Edge HA and VRRP implementations ++ Automating weekly reports bandwidth utilization, tcp optimization and on the performance of all SDWAN devices ++ Configured and validated various Quality-of-Service (QoS) policies for Voice and Data communications. ++ Responsible to create all technical documents (Like LLD/HLD, success proof of use cases.) with all customer-requested features. ++ Developed custom monitoring and alerting solutions using Python and SNMP, enhancing network visibility and facilitating proactive issue resolution. ++ Developed automation scripts using Python and Ansible to automate network provisioning, configuration management, and monitoring tasks, resulting in a reduction in manual effort and increased operational efficiency. ++ Implemented a self-healing network architecture using Ansible and custom scripts to automatically detect and remediate network faults.

KEY ROLES AND RESPONSIBILITY- ++ Designed, developed, and implemented network automation scripts and tools using Python to automate routine tasks, resulting in a 30% reduction in manual effort. ++ Managing daily operations of a 3000+ node, multi-network, and multi-vendor in entries network. ++ Configure Cisco Routers/L3 Switches for EIGRP using route redistribution, filtering, and securing the network routes using encryption and authentication. ++ Configured and validated various Quality-of-Service (QoS) policies for Voice and Data communications. ++ Cisco IOS: Knowledge of Upgrading IOS and ROMmon package. ++ SDWAN solution Cisco Viptela - Monitoring and troubleshooting Viptela SD WAN network solution for enterprise customers ++ Using SolarWinds/Orion for the device’s health checks and node status along with the alerts. ++ Reserve IP’s for every vEdge in tools according to site Topology (MPLS + Internet, Dual Internet, Single Internet). ++ vEdge configuration and installations (100b, 1000, 2000) and upgrade them through vManage till latest version. ++ PEGA tool to maintain order lifecycle and configuration generation.

KEY ROLES AND RESPONSIBILITY-++ Implementation, Design and Maintenance Core IP/MPLS Network (Cisco/Juniper Routers). ++ MPLS inter-AS and intra-AS Carrier supporting Carrier connectivity solutions ++ MPLS L3 VPNs and related protocols like LDP, RSVP and Multiprotocol BGP. ++ Multicast routing and related protocols - PIM, IGMP etc. ++ Troubleshooting IP Routing – Static routes, EIGRP, OSPF, BGP, PBR; CEF, PE-CE routing, routing loops, asymmetric/sub-optimal routing, route redistribution, route filtering (distribute-lists, prefix-lists, route-maps), routing across tunnels etc. ++ Troubleshooting on edge routers and core routers in the MPLS Backbone – MPLS L3 VPN, MPLS L2 VPN, LDP, VRF, RD/RT, MP-iBGP, route propagation, IGP routing, MPLS TE etc. ++ Investigating and resolving issues in the WAN – reachability of Internet/Intranet destinations, NAT/PAT, link flaps, MTU issues, packet loss, latency, errors, link congestion, QoS etc. ++ Optimize load-balancing and load-sharing solutions for the core and BACKHAUL networks. ++ On-site consulting for cisco and juniper based network designs and configurations. ++ Provide level 2 and level 3 support to internals staff and top customers. ++ Optical level testing, port mapping & changing, end to end path tracing. ++ To handle and analyze trouble tickets and recommend timely actions and solutions to trouble tickets. ++ In case fiber cut to reroute the link or configure through other path. ++ Troubleshooting last mile copper, fiber media related issue in support with field team. ++ Perform the stability test for enterprises circuit as well as high value customer. ++ Working according Metasolv (M6) order Numbers to Upgrade or downgrade the links. ++ NNI shifting for PAN India customers (45000+) to provide redundant path i.e. 1:0 to 1:1. ++ Project Shield – Circuit migration from SDH to CEN network and MPLS/ISP circuit as well. ++ Migrate service provider current infrastructures from IOS to IOS-XR

KEY ROLES AND RESPONSIBILITY-++ Network (Data & Voice) project Planning, Network diagram designing, execution and its Monitoring. ++ Resolving faults in the customer’s LAN – VLANs and Trunking, Ether Channels, STP, HSRP, InterVLAN Routing, Cisco StackWise, VSS, PoE, device replacements, configuration, software upgrades etc. ++ Configuring and supporting GRE tunnels, GRE over IPsec tunnels, Site-to-Site IPsec VPNs and DMVPNs on Cisco routers. ++ Configuring EIGRP and OSPF protocols on the Cisco products. ++ Password Change on the routers, switches, and firewall devices for every quarter as per client requirement. ++ Configuring VLAN for data and voice in Layer 3 and Layer 2 Switches. ++ Perform LAN and VLAN troubleshooting. ++ Responsible for network diagram creation in MS Visio 2003. ++ Managing network tools like HP Network Node Manager. ++ Monitor the issues or problems faced by users of TATA Motors by means of incident management through BMC Remedy IT Management tool.

KEY ROLES AND RESPONSIBILITY-KEY ROLES AND RESPONSIBILITY: ++ Configuring and Administration of Huawei AR 1200 series Routers and Switch.++ Implementing and troubleshooting network implementation issues.++ Supporting IT Manager in implementing network infrastructure in remote location.++ Installation, configuring and managing business desktops.++ Configuring VLAN for data and voice in Layer 3 and Layer 2 Switches.++ Perform LAN and VLAN troubleshooting.++ Customize desktop application to meet user specifications and site standards.++ Network & power cable lying documents and diagram preparation & third party vendor coordination for lying of cables to provide infrastructure services.