• Successfully completed the LAN Remediation Project for government agencies, including the upgrade of Alcatel switches and implementation of hardening controls such as switch hardening based on CISL, VLAN segmentation, and NAC with 802.1X.• Completed IOS upgrades for Alcatel switches 6850 and Cisco switches.• Collaborated with the team to review Firewall rules and performed cleanup activities.• Successfully completed Firewall migration and implemented hardening measures.• Provided network support for SEA GAMES 2015 at the sports council, managing a network comprising Cisco Routers, Alcatel Core switches OS9700E, Juniper Firewalls SSG550, and Alcatel Edge Switches OS6850.• Monitored Alcatel WLCs OAW-4604 at the Sports Council, focusing on the monitoring of Access Points (APs) and checking the status of WIFI connections to clients.• Troubleshot network issues at users' locations and conducted patching of ports to their respective VLANs.

• Provided network support to entities within CREATE, comprising over 10 research entities supported by the NATIONAL RESEARCH FOUNDATION for their research activities.• Managed a high-redundancy CREATE Network, including: - Core Switches: N7K Nexus 7010 Switches OS 5.2(3), N5K Nexus 5020 Switches OS 5.1(3)N1(1) - Access Switches: Cisco 2960S and 3560X OS 12.2(55) - Firewall: ASA 5585 Firewall OS 8.4(2) - WAN Routers: ASR Routers 1002 OS 15.3(3) - WLAN Controller: WLC 5508 (7.0)• Collaborated with hardware vendors to replace faulty devices and configured them according to the original setup.• Set up new Access switch configurations for entities, assisting in the smooth arrival of new servers and network equipment, and conducting burn tests before deployment.• Conducted stacking of switches within the same entity, inputting entity configurations, including proper server, data, and wireless VLAN information.• Updated inventory lists of network equipment, managed IP addresses for entities, and provided allocated IP ranges.• Monitored WCS 5508, WLC, and ACS 1121, configured WLC and WCS, and created new SSIDs.• Administered and configured DHCP and DNS servers.• Updated patching lists and patched new ports as needed.• Conducted network connectivity troubleshooting using tools such as ping, tracert, and telnet.

• Provided day-to-day network operation support for MOM, serving over 2000 LAN users with a network consisting of Cisco 6500, 4500/2900 series switches, and Cisco Wireless LAN.• Troubleshot network-related problems for MOM, covering services such as Firewall, LAN, and WAN.• Configured LAN and WLAN networks.• Troubleshot LAN connectivity issues for users/printers, providing on-site resolution for patching or cabling issues.• Provisioned new network ports for users/printers, configuring ports as per the agreed VLAN design for the respective floor.• Managed IP addresses for the client network and allocated IPs for any new network devices/printers.• Collaborated with hardware vendors to replace faulty devices and configured them based on the original setup.• Analyzed syslog server reports, updating the team lead on any issues in the logs.• Participated in weekly operational meetings with MOM clients to discuss operational issues and plan the next course of action.• Worked with MOM to update the inventory list for all network devices.• Supported day-to-day WLAN issues, collaborating with the hardware vendor to replace any faulty Access Points (APs).• Collaborated with the team lead to add/remove firewall rules.• Assisted customers in optimizing their network by providing recommendations.• Managed and monitored network performance on the customer's network.• Maintained and updated the inventory list.• Handled ticketing and updated the system to complete SLAs.