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Why is the Copper SFP+ Not Achieving the Performance or Reach Expected at 10GBASE-T, 5GBASE-T or 2.5G BASE-T?

Whether it is an SFP+ adapter or a native RJ45 test port, high-speed rates over twisted pair require specific cable grades and have a maximum reach (lengths). So, just grabbing any RJ45 UTP patch cord may create some rate, errors or reach issues.

Whether it is an SFP+ adapter or a native RJ45 test port, high-speed rates over twisted pair require specific cable grades and have a maximum reach (distance, length). Here are some typical values:

  • 10GBASE-T requires Cat 7 or Cat 8 cables and can reach 30m (100 ft)
  • 5GBASE-T requires Cat 6A cables and can reach 100m (328 ft)
  • 2.5GBASE-T requires Cat 5E cables and can reach 200m (656 ft)

So, just grabbing any regular (traditional) RJ45 UTP patch cord you can find first may not be a good idea, because it may create some rate, errors and/or reach issues that could significantly affect your testing.

Also, for VeEX test sets, make sure to use the copper SFP+ recommended by VeEX.