Tag
path-mtu-discovery
- Oct 22, 2026 Tunnel Encapsulation Overhead and Path MTU Discovery How many bytes each overlay scheme adds, why ICMP-based path MTU discovery breaks across a tunnel, and the options for keeping an inner frame inside the underlay MTU. networking
- Apr 22, 2026 MTU and Fragmentation Across a VPC Boundary Why the usable MTU inside a virtual network is smaller than the physical link MTU, how encapsulation and translation each consume bytes, and what happens when a packet that needs fragmenting is dropped instead. cloud infrastructure
- Nov 3, 2025 Link MTU, Jumbo Frames, and Where the Path Breaks Why 1500 bytes became the standard payload, what changes when both ends agree on more, and how MTU mismatches appear as silent large-packet loss. networking
- Jul 16, 2025 Fragmentation, the MTU Floor, and Path MTU Discovery Black Holes How a datagram is split into pieces that a smaller link can carry, why the reassembly rules create ambiguity, and the specific way discovery fails when ICMP is filtered. networking