Known Issues

NVIDIA ConnectX-5 Adapter Cards Firmware Release Notes v16.35.3502 LTS

The following sections describe known issues in firmware releases and possible workarounds.

Internal Ref.



Description: When trying to choose the threshold for the Fast Recovery feature (BER Config), It is possible that threshold 0 will be loaded.

Workaround: Always use the default threshold.

Keywords: Fast Recovery, BER Configuration

Discovered in Version: 31.2010.6064


Description: Wrong RTT value is exposed under PRTL PRM.

Workaround: For correct RTT value, deduct 15 from the exposed RTT value (RTT in ns = (PRM value - 15) * 4).

Keywords: Registers, RTT Value

Discovered in Version: 31.2010.6064


Description: An unresponsive PSU client can cause the SDA I2C line to hang.

Workaround: N/A

Keywords: I2C

Discovered in Version: 31.2010.6064


Description: GMP MADs with GRH header towards the Router are not supported.

Workaround: N/A

Keywords: Routers

Discovered in Version: 31.2010.5042


Description: In some cases, MMS4X00-NL1.2 may have low BER.

Workaround: N/A

Keywords: Signal Integrity

Discovered in Version: 31.2010.2110


Description: Using NDR speed with Optical Transceivers causes bandwidth to be 350Gb/s instead of 400Gb/s in small packets.

Workaround: N/A

Keywords: Optical Transceivers

Discovered in Version: 31.2010.1310


Description: When using Optical Transceiver, toggling a port in a cage may toggle the adjacent port in the cage.

Workaround: N/A

Keywords: Optical Transceivers, Port Toggle

Discovered in Version: 31.2010.1310


Description: VL_HIGH_LIMIT is not affecting the VL arbiter as expected.

Workaround: Arbitration table should be set using only the low priority VL arbitration table.

Keywords: VL Arbitration

Discovered in Version: 31.2010.1310


Description: Configuring weight "0" for VL, results in unexpected behavior.

Workaround: Arbitration table should be configured with weights other than "0".

Keywords: VL Arbitration

Discovered in Version: 31.2010.1310


Description: Congestion profiles in VS-MAD PortProfileSetting support only fixed mode. Percentage mode is not supported.

Workaround: N/A

Keywords: InfiniBand Congestion Control

Discovered in Version: 31.2010.1310

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