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Appliance Loopback Test Plug fails on Gigabit ports on Power-1 appliances
Symptoms
  • The RJ45 Loopback tester provided with Power-1 appliances works with speed/duplex set to 10/100, but fails to display link on gigabit speed settings.
Cause

The plug provided has only the 1 & 3, and 2 & 6 pins crossed, which supports the 10/100 Ethernet standard that only requires one pair for transmission in either direction. 

This is not sufficient for Gigabit Ethernet, which requires all four pairs to be crossed.


Solution
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