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Event ID: 4 Source: q57w2k

Source
Level
Description
<adapter>: The network link is down.  Check to make sure the network cable is properly connected.
Comments
 
See the comments for event id 4 from B57NT4.
I discovered a 3COM switch that had a bad APC attached to it. I just happened to be standing next to it when it shut down for a second.
The adapter generates this message when the link on the physical interface is down. When the link is reestablished, another event (ID 9 same source) will be generated.

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