Known Issues

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

ConnectX-7 has the same feature set and limitations as ConnectX-6 adapter card. For the list of ConnectX-6 Known Issues, please go to https://docs.nvidia.com/networking/category/connectx6fw.

The below are limitations related to ConnectX-7 only.

Internal Ref.

Issue

3036791

Description: Configuring 400G_8x in force mode is currently not supported.

Workaround: N/A

Keywords: 400G_8x in force mode

Discovered in Version: 28.33.4030

3085879

Description: On rare occasions, when connecting a ConnectX-7 adapter card to an NVIDIA Spectrum-3 switch system using the optical cable OPN MFA1A00-C003, the link up time is ~7sec.

Workaround: N/A

Keywords: Optical cables, link up time

Discovered in Version: 28.33.4030

3081264

Description: 10G/40G speeds are not supported on MFS1S00-XXXX modules (200G optics) in ConnectX-7 adapter cards.

Workaround: N/A

Keywords: Optical cables

Discovered in Version: 28.33.4030

3070590

Description: PLL modules are not supported in ConnectX-7 ethernet adapter cards.

Workaround: N/A

Keywords: PLL

Discovered in Version: 28.33.4030

3009525

Description: A Bit Error Rate (BER) of 1e-9 might occur when using optical cables.

Workaround: N/A

Keywords: BER

Discovered in Version: 28.33.4030

3004352

Description: LRO is currently not supported.

Workaround: N/A

Keywords: LRO

Discovered in Version: 28.33.4030

3073517

Description: When connecting a ConnectX-7 adapter card to a ConnectX-5 or an NVIDIA Spectrum switch and trying to raise 10G/40G over 100G optics cable is not supported.

Workaround: N/A

Keywords: Optical cables, ConnectX-5, NVIDIA Spectrum

Discovered in Version: 28.33.4030

3073517

Description: When connecting a ConnectX-7 adapter card to a ConnectX-5 or an NVIDIA Spectrum switch, configuring first 10G/40G and then configuring back 100G we result in linkup failure.

Workaround: Toggle both ConnectX-7 and ConnectX-5 or the NVIDIA Spectrum switch

Keywords: ConnectX-5, NVIDIA Spectrum, linkup

Discovered in Version: 28.33.4030

3070409

Description: When connecting a ConnectX-7 adapter card to a ConnectX-6 Dx or an NVIDIA Spectrum-3 switch, NRZ speeds are not raised when using 200GbE optical cable.

Workaround: Configure PHY_FEC_OVERRIDE on the ConnectX-7 side for the requested speed.

Keywords: Optical cables, NRZ, ConnectX-6 Dx, NVIDIA Spectrum-3, 200GbE optical cable

Discovered in Version: 28.33.4030

2993531

Description: PML1 is disabled by default. Enabling it might result in server hanging.

Workaround: N/A

Keywords: PML1

Discovered in Version: 28.33.2028

2824427

Description: Running with a debug firmware reduces security as if token was applied.

Workaround: N/A

Keywords: Debug Firmware

Discovered in Version: 28.33.2028

3046168

Description: Congestion Control is not enabled when one link type of different ports is different.

Workaround: N/A

Keywords: Congestion Control, Link Type, PCC

Discovered in Version: 28.33.2028

3039348

Description: Host Chaining is currently not supported in ConnectX-7 adapter cards.

Workaround: N/A

Keywords: Host Chaining

Discovered in Version: 28.33.2028

3023751

Description: Link flapping may occur when using ConnectX-7 adapter cards with HDR optic cables.

Workaround: N/A

Keywords: Link flapping, HDR optic cables

Discovered in Version: 28.33.2028

2920813

Description: The an_disable flow is not supported in ConnectX-7 adapter cards for 25GbE and 50G_2x link speeds when using one of the following cables:

  • MT1841VS00827 (rev A4)

  • MT1830VS00895 (rev A3)

The flow is supported only when configuring FEC using the PPLM register.

Workaround: N/A

Keywords: AN, cables, 25GbE, FEC

Discovered in Version: 28.33.2028

-

Description: Upgrading to firmware 28.33.2028 from any previous Engineering Sample (earlier than version 28.98.2406) must be done before installing WinOF-2 v2.90 driver and requires going through the following steps:

  1. Upgrade to 28.98.2406 version while the driver is disabled.

  2. Upgrade to firmware version 28.33.2028 (the driver can be enable at this stage).

Workaround: N/A

Keywords: Firmware upgrade

Discovered in Version: 28.33.2028

-

Description: Downgrading from firmware 28.33.2028 to any previous Engineering Sample firmware is not supported.

Workaround: N/A

Keywords: Firmware downgrade

Discovered in Version: 28.33.2028

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