Unverified50% confidenceFactExact time
当物理介质质量下降时，PHY芯片检测到信噪比恶化和误码率升高，会触发自动协商将速率降级至100Mbps甚至10Mbps
1
Sources
50%
Confidence
Long-term
Relevance
7/16/2026
First Seen
Sources
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