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What happens when you connect 100Mbps system to 1000Mbps network with all Giga devices?

Fresh3 days ago
Mar 15, 20266856 views
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Problem

What happens when I do not turn on Auto Negotiation, force my MAC and PHY as 100Mbps, but instead connect (say by mistake) to a 1000Mps network (say all devices in that LAN runs at Giga Speed)?

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Fix for: What happens when you connect 100Mbps system to 1000Mbps network with all Giga devices?

Low Risk

Normally, both ends would just negotiate the highest available speed. But if you have autonegotiation disabled, but the switch expects it to be enabled, you'll be stuck with a very unreliable 100 Mbps half-duplex connection. Parallel detection is us…

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Environment