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VisionWorks Probe: Why are all TWAMP Clients on probe reporting 100 percent loss and TWAMP Reflectors on probe not reflecting any TWAMP packets?

Environment/Versions
VisionWorks Probe: 7500, 7531, 7521, 7522, 7561
VisionWorks T&D
Answer
Possible causes are:
  1. The probe is not set up for NTP or PTP timing.
  2. The IP information used is incorrect.
  3. Bad SFP.
  4. Bad fiber cabling or fiber is not running to expected port on Switch.
  5. Bad configurations in Switch.
  6. Failed port on Switch.

Product : VW Controller PM Classic,VW Controller T&D Classic,VisionWorks Probe