The NetProbe 10GR reflector provides loopback functionality in a low-cost, handheld device. It’s a smart loop device that swaps the source and destination addresses in MAC and IP headers as necessary to run Ethernet performance tests.

Main Features

  • Portable, lightweight and rugged device.
  • Supports electrical (RJ-45) and optical interfaces (SFP, SFP+ and XFP).
  • Supports full rate loopback on Layers 1, 2, 3 and 4.
  • Simple remote web and push button operation. Buttons select Interface, Medium, Loop Layer and Loop Filter.
  • IP Ping and Traceroute for Layer 3 connectivity tests.
  • Supports industry standard carrier Ethernet validation tests: RFC-2544, Y.1564, and Bit error rate (BER).
  • Remote web operation provides important Tx/Rx stats including Frames/sec, #Frames, #Short Frames, Unicasts, Broadcasts, Multicasts, Dropped, Packet:s and CRC errors.
  • Quickly enable DHCP on LAN management port by holding the Loop Layer button for 4 seconds.
  • Easily return to defaults by holding the Loop Layer button for 4 seconds.
  • Supports smart loopback as per Layer of Rx Data.
  • Compatible with end-to-end testing with NetProbe 2000 and NetProbe 10G and other Ethernet test sets.


When Ethernet and IP traffic passes through a switch or router, the source and destination addresses are checked and used for directing the traffic. Thus, a simple hard loop will not work as it would with T-carrier. The NetProbe 10GR is needed to swap the source and destination addresses in the MAC and IP headers.

With a NetProbe 10G or NetProbe 1G on one end of an Ethernet circuit and the NetProbe 10GR on the other end, a technician can qualify the bit error rate, measure throughput, jitter, latency, frame loss and more.

The NetProbe 10GR allows the specified Ethernet port to loop back incoming Ethernet frames on layer 1, 2, 3 or 4 back to the sender for end-to-end testing.