<![CDATA[The wireless network at SMP Swasta GKPS I Raya Simalungun initially depended on a single modem/router installed in the administration room. Its corner position and concrete-wall obstructions produced uneven signal distribution and blank spots in several school areas. This study analyzed the existing condition and developed an optimized network configuration using the Network Development Life Cycle (NDLC). Cisco Packet Tracer supported logical design and simulation, while TP-Link access points and a MikroTik hAP lite router were configured for addressing, wireless service, routing, firewall functions, and queue-tree bandwidth management. The implementation expanded service planning to the principal's office, administration area, library, teacher room, and computer laboratory. Configuration verification confirmed successful router access, static addressing, SSID and channel definition, LAN integration, MikroTik management, and queue-tree activation. The resulting design provides a structured basis for fairer bandwidth distribution and continuous monitoring, although future work should add quantitative measurements of coverage, throughput, delay, jitter, packet loss, and user experience.]]>
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