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andrewflash/strategic_mtu_tuning.md

Created November 24, 2025 05:22
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Strategic MTU Tuning Recommendations for WMN Applications
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strategic_mtu_tuning.md
MTU Size Range Protocol Efficiency Contention/Blockage Cost Fragmentation Risk Suitable WMN Application
Very Small (<576 B) Very Low Minimal Zero Real-time control, VoIP, critical telemetry requiring guaranteed low latency.
Constrained Optimum (1300–1400 B) Medium-High Moderate Minimal (Aligned with PMTUD) Robust multi-hop backhaul, systems using VPN or cellular tunnels (e.g., 1360–1440 bytes).
Standard (1452–1500 B) High Moderate to High High (if path has tunnels/PPPoE) Bulk data transfer, general internet access in non-contested, low-hop scenarios.
Too Large (>1500 B, Jumbo) Maximum Efficiency Extreme Guaranteed (unless controlled environment) Localized, dedicated high-speed links with hardware support for flow control.
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