NVIDIA Docs Hub NVIDIA Networking Networking Software Adapter Firmware NVIDIA ConnectX-8 SuperNIC Firmware Release Notes v40.44.0212 Known Issues

Known Issues

VF Network Function Limitations in SR-IOV Legacy Mode & in Switchdev Mode

Dual Port Device	Single Port Device
127 VF per PF (254 functions)	127

VF+SF Network Function Limitations in Switchdev Mode

Dual Port Device	Single Port Device
127 VF per PF (254 functions) 512 PF+VF+SF per PF (1024 functions)	127 VF (127 functions) 512 PF+VF+SF per PF (512 functions)

ConnectX-8 has the same feature set and limitations as ConnectX-7 adapter card. For the list of ConnectX-7 Known Issues, please go to https://docs.nvidia.com/networking/software/adapter-firmware/index.html#connectx-7.

The below are limitations related to ConnectX-8 only.

Internal Ref.	Issue
4230775	Description: Due to a known issue, telemetry rate must be set to lower than 3 minutes.
	Workaround: N/A
	Keywords: Telemetry rate
	Detected in version: 40.44.0212
4161849	Description: The Green LED remains solid and does not blink when running traffic.
	Workaround: N/A
	Keywords: Green LED
	Detected in version: 40.44.0212
4230775	Description:
	Workaround: N/A
	Keywords:
	Detected in version: 40.44.0212
-	Description: Although ConnectX-8 SuperNIC is defined to work at Gen6 x16 (default) or Gen5 x32, in firmware v40.44.0204, the default configuration is Gen5 x32. Changing between the modes is done by an NVConfig command.
	Workaround: N/A
	Keywords: Gen6, Gen5, PCIe
	Detected in version: 40.44.0208
4038325 4031430 4038341 4046105	Description: Connecting to systems with NRZ speeds of 1,10, 25, 40, 50, or 100Gb/s is not supported in the current release.
	Workaround: N/A
	Keywords: NRZ, Connectivity
	Detected in version: 40.44.0208
4158184	Description: The Lane Error Status may occasionally appear in Configuration space. It can be safely ignored as it does not have any impact on device performance. Users are encouraged to monitor their systems, but this condition does not warrant any immediate action unless other issues arise.
	Workaround: N/A
	Keywords: Lane Error Status
	Detected in version: 40.44.0208
4208960	Description: A packet may be parsed incorrectly, if a driver uses the `header_length_field_mask` when creating a `PARSE_GRAPH_NODE` object, and the mask value is not composed of continuous bits or does not commence at the least significant bit.
	Workaround: Insert the `header_length_field_mask` with continuous bits and commence at the least significant bit.
	Keywords: PARSE GRAPH NODE, Flex Parser
	Detected in version: 40.44.0208
4176679 / 4119723	Description: When sending RoCE traffic using 1 or 2 QPs using a 100GbE or 400GbE link speed with Congestion Control enabled, bandwidth might not reach its line rate.
	Workaround: N/A
	Keywords: RoCE, Congestion Control, 400GbE, performance
	Detected in version: 40.44.0208
4201405	Description: Upgrading to firmware 40.44.0xxx from any previous Engineering Sample version requires power cycling the driver and not just resetting it (using mlxfwreset).
	Workaround: N/A
	Keywords: Upgrade, power cycle, reset
	Detected in version: 40.44.0208