MTU 归档 - 夜莺博客

标签：MTU

Jumbo Frames MTU Mismatch: Diagnosing Silent Drops

Jumbo Frames MTU Mismatch: Diagnosing Silent Drops

Diagnose jumbo frame failures: find the device with the low MTU using DF-bit pings, fix it, and understand why large pings fail only to some hosts.

admin admin 2026-10-08
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IPv6 Path MTU Discovery and ICMPv6 Packet Too Big

IPv6 Path MTU Discovery and ICMPv6 Packet Too Big

Why IPv6 sessions establish and then hang: PMTUD depends on ICMPv6 Packet Too Big. Learn how to diagnose black-hole MTU problems and fix the filtering

admin admin 2026-09-26
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VXLAN MTU and Fragmentation: The 50-Byte Tax

VXLAN MTU and Fragmentation: The 50-Byte Tax

Why VXLAN overlays break large transfers: the 50-byte tax, 1450 vs 9000 MTU, cloud and tunnel underlays, MSS clamping, offloads and the counters that

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 end to end: MSS arithmetic, why PMTUD fails, encapsulation overheads, MSS clamping on routers and Linux hosts, and DF-bit ver

admin admin 2026-09-11
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