Resolving campus-wide IP exhaustion and connectivity failures by migrating from a constrained /24 subnet to an optimized /21 network architecture.
Upon reviewing the campus network infrastructure, users frequently faced connectivity drops and IP allocation failures. Technical diagnostics revealed that the network was originally subnetted as a standard /24 (providing only ~255 usable IP addresses).
However, the active device inventory across the campus had scaled significantly, including:
This massive demand vastly exceeded the 255-IP limit, causing constant DHCP starvation and network bottlenecks.
Redesigned and re-segmented the campus network architecture by shifting from a /24 to a /21 subnet structure, expanding the available IP address pool to over 2,000 hosts.