Answer
If you have got chance being encountered below symptom in a network environment with some certain hubs/switches , please check following solution for this symptom with Intel® 82578DC Gigabit Ethernet PHY.
Symptom:
Network connection links down randomly and intermittently. Connection icon will be disabled and pop up a message, “A network cable is unplugged” at the right bottom corner like Windows XP. The symptom just appears in a short time then link up again soon.
Solution:
1. Set the "Speed and Duplex" to fix according to hubs/swtich supported.
2. Suggest user upgrade Intel LAN driver to version 16.5.
- Intel LAN driver download,
http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Ethernet+Components&ProductLine=Ethernet+Controllers&ProductProduct=Intel%c2%ae+82578+Gigabit+Ethernet+PHY&ProdId=3245&LineId=976&FamilyId=2280
- Symptom,
![](/ECSWebSite/images/pin/linkdown.JPG)
- Set the "Speed and Duplex" as "100 Mbps Full Duplex" as an example.
![](/ECSWebSite/images/pin/Fixed speed and duplex.jpg)
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