Incorrect rate is reported by 25GbE Intel Ethernet Network Adapter E810

Solution Verified - Updated -

Issue

  • when the network adapter is set to RoCE/iWARP mode, the ibstatus reports a "100 Gb/sec" rate instead of the real rate which is "25 Gb/sec", it cause the bandwidth test to fail finally
Error: Average bandwidth of: 22.06128 Gbs did not fall within 0.4 margin of 100 Gb/sec (4X EDR)

Environment

  • Intel E810-XXVDA4 25GbE
  • Intel E810-XXVAM2 25GbE
  • Intel E810-DA2 10/25GbE SFP28 2-Port OCP Ethernet Adapter

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