# 1.6T Ethernet Packet Loss Problem Solved: PHY-Layer Buffer Exhaustion with MAC-Layer Credit-Based Flow Control

> Source: <https://techblog.comsoc.org/2026/10/17/1-6t-ethernet-packet-loss-problem-solved-phy-layer-buffer-exhaustion-with-mac-layer-credit-based-flow-control/>
> Published: 2026-10-17 23:25:41+00:00

Introduction: As network fabrics scale to support next-generation AI clusters and workloads, the industry is confronting a harsh physical-layer reality. Recent laboratory benchmarks evaluating 1.6 Terabit Ethernet (1.6T) data streams confirm that under saturated, wire-speed workloads, traditional packet-forwarding logic triggers instantaneous Physical layer (PHY) memory buffer exhaustion. Recently released laboratory validation data provides the first... [Read more →](https://techblog.comsoc.org/2026/10/17/1-6t-ethernet-packet-loss-problem-solved-phy-layer-buffer-exhaustion-with-mac-layer-credit-based-flow-control/)