MTU 归档 - 夜莺博客

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VXLAN MTU and Fragmentation: The 50-Byte Tax

VXLAN MTU and Fragmentation: The 50-Byte Tax

Why VXLAN breaks large transfers: the 50-byte overhead maths, 1450 vs 9000 MTU outcomes, MSS clamping, and the ping test that finds a PMTUD black hole

admin admin 2026-09-14
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MTU, MSS and PMTUD: Fixing Black-Hole Connections

MTU, MSS and PMTUD: Fixing Black-Hole Connections

Diagnose MTU black holes: how MSS is derived, why PMTUD fails, when to clamp TCP MSS on routers and firewalls, and how to verify per-interface MTU.

admin admin 2026-09-11
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