Known Issues
VF Network Function Limitations in SR-IOV Legacy Mode
Dual Port Device |
Single Port Device |
127 VF per PF (254 functions) |
127 |
VF Network Function Limitations 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 |
|
|
Internal Ref. |
Issue |
3795140 |
Description: Firmware cannot reach the line rate with a single QP while running traffic. |
Workaround: N/A |
|
Keywords: Line rate, MCX750500B-0D0K / MCX750500B-0D00 |
|
Discovered in Version: 28.39.3004 |
|
3649572 |
Description: Downgrading from firmware version 28.39.2048 to a lower one requires performing a Power Cycle after firmware burning and not fwreset. |
Workaround: N/A |
|
Keywords: Firmware downgrade, power cycle |
|
Discovered in Version: 28.39.1002 |
|
3614362 |
Description: When connected to a Spectrum-1 switch system using NRZ 25G optic module supporting DME in NO FEC, an EFF BER of -13 may be seen once in 200 toggles. |
Workaround: To raise the link, re-toggle the port. |
|
Keywords: Spectrum-1, NRZ, BER, port toggling |
|
Discovered in Version: 28.39.1002 |
|
3629216 |
Description: mlxfwreset level 3 command is not supported for MCX750500B-0D00 / MCX750500B-0D0K / MCX755206AS-NEAT-N P/N. |
Workaround:
|
|
Keywords: mlxfwreset level 3 |
|
Discovered in Version: 28.39.1002 |
|
- |
Description: The I2C clock fall time is lower than the 12ns minimum defined in the I2C-bus specification. For further information, refer to the I²C-bus Specification, Version 7.0, October 2021, https://www.i2c-bus.org/. |
Workaround: N/A |
|
Keywords: I2C clock |
|
Discovered in Version: 28.39.1002 |
|
3179534 |
Description: 25G/lane speeds are not supported on 200GbE optic cables. |
Workaround: N/A |
|
Keywords: Cables, 200GbE |
|
Discovered in Version: 28.39.1002 |
|
3606136 |
Description: In rare cases, linkup time of NDR and NDR200 with MMA4Z00-NS400 may take longer than 60 seconds. |
Workaround: N/A |
|
Keywords: Cables, NDR, NDR200, linkup time |
|
Discovered in Version: 28.39.1002 |
|
3435259 |
Description: The host enables the device to populate only 1 bus. When opening extra 2 Physical ports, moving from dual-port to quad-port, the user can open 2 less Virtual Functions. |
Workaround: N/A |
|
Keywords: VF, dual-port, quad-port |
|
Discovered in Version: 28.39.1002 |
|
3525865 |
Description: Unexpected system behavior might be observed if the driver is loaded while reset is in progress. |
Workaround: N/A |
|
Keywords: Sync 1 reset, firmware reset |
|
Discovered in Version: 28.39.1002 |
|
3363753 |
Description: The link is down when connected to the MMS1V00-WM (DR4) optical module. |
Workaround: N/A |
|
Keywords: 400G, link down |
|
Discovered in Version: 28.38.1002 |
|
3439438 |
Description: When connecting to a High Speed Traffic Generator in 400G speed, the linkup time may takes up to 3 minutes. |
Workaround: N/A |
|
Keywords: 400G, linkup time |
|
Discovered in Version: 28.38.1002 |
|
3457472 |
Description: Disabling the Relaxed Ordered (RO) capability (relaxed_ordering_read_pci_enabled=0) using the vhca_resource_manager is currently not functional. |
Workaround: N/A |
|
Keywords: Relaxed Ordered |
|
Discovered in Version: 28.37.1014 |
|
3275394 |
Description: When performing PCIe link secondary-bus-reset, disable/enable or mlxfwreset on AMD based Genoa systems, the device takes longer then expected to link up, due to a PCIe receiver termination misconfiguration. |
Workaround: N/A |
|
Keywords: PCIe |
|
Discovered in Version: 28.37.1014 |
|
- |
Description: When upgrading from firmware v28.35.2000 to a newer one, the default port speeds of adapter cards MCX755106AS-HEAT/ MCX755106AC-HEAT will change from InfiniBand to Ethernet. |
Workaround: To change it back to InfiniBand, please follow the instructions in the ConnectX-7 hardware User Manual. |
|
Keywords: Firmware upgrade, port type, MCX755106AS-HEAT/ MCX755106AC-HEAT |
|
Discovered in Version: 28.37.1014 |
|
3376224 |
Description: FEC override is not supported when working with NRZ speeds on PAM4 Optical modules. |
Workaround: N/A |
|
Keywords: FEC override, NRZ, PAM4 |
|
Discovered in Version: 28.37.1014 |
|
3262845 |
Description: In the ConnectX-7 adapter card with P/N MCX750500B-0D0K, t he "Fatal Error Reporting Enable" bit controls both the fatal and the non-fatal ERR MSG forwarding. The "Non-Fatal Error Reporting Enable" bit does not affect the ERR MSG forwarding. |
Workaround: N/A |
|
Keywords: Fatal Error Reporting Enable" bit, PCIe, MCX750500B-0D0K |
|
Discovered in Version: 28.36.1010 |
|
3312483 |
Description: WoL packets may not working properly if sent to Unicast destination MAC. |
Workaround: N/A |
|
Keywords: WoL packets, Unicast destination MAC |
|
Discovered in Version: 28.36.1010 |
|
3339919 |
Description:
|
Workaround: To raise in Force flow, configure the speed, FEC and precoding. |
|
Keywords: Link up speed |
|
Discovered in Version: 28.36.1010 |
|
3339818 |
Description: When performing a stress toggling on a ConnectX-7 adapter card that is connected to the MMA1Z00-NS400 cable and the speed is set to 100G_1x with interleaved FEC, a long linkup time of up to 5 min may occur. |
Workaround: N/A |
|
Keywords: Toggling, MMA1Z00-NS400 |
|
Discovered in Version: 28.36.1010 |
|
3329109 |
Description: MFS1S50-H003E cable supports only HDR rate when used as a split cable. |
Workaround: N/A |
|
Keywords: HDR, split cable, MFS1S50-H003E |
|
Discovered in Version: 28.36.1010 |
|
2844036 |
Description: When using the "Dual Write" feature with QP buffer bigger than the maximum outstanding WQEs (128), the data being sent on the standby QP can be corrupted. |
Workaround: Limit the QP buffer size when using "Dual Write" up to 128 WQEs. |
|
Keywords: Dual-write, QP |
|
Discovered in Version: 28.36.1010 |
|
3178339 |
Description: PCIe PML1 is disabled. |
Workaround: N/A |
|
Keywords: PCIe PML1 |
|
Discovered in Version: 28.35.1012 |
|
3110297 |
Description: When ConnectX-7 adapter card is configured to use the Auto-Negotiation mode, 400G_8x linkup cannot be raised. |
Workaround: Configure the adapter card to use Force mode. |
|
Keywords: 400G_8x, linkup |
|
Discovered in Version: 28.34.4000 |
|
3033910 |
Description: BAR misses caused by a memory write/read actions are not reported in the AER and the device status. |
Workaround: N/A |
|
Keywords: BAR miss, AER |
|
Discovered in Version: 28.34.4000 |
|
3140645 |
Description: 3rd party servers may hang after warm reboot due to the PCIe switch. |
Workaround: N/A |
|
Keywords: PCIe, 3rd party servers |
|
Discovered in Version: 28.34.4000 |
|
- |
Description: Changing dynamic PCIe link width is not supported. |
Workaround: N/A |
|
Keywords: PCIe |
|
Discovered in Version: 28.34.1002 |
|
3174038 |
Description: SPDM requests received while CPLD burn flow is in progress may be answered with incorrect responses. |
Workaround: Avoid activation of the two flows in tandem. |
|
Keywords: SPDM |
|
Discovered in Version: 28.34.1002 |
|
3141072 |
Description: The "max_shaper_rate" configuration query via QEEC mlxreg returns a value translated to hardware granularity. |
Workaround: N/A |
|
Keywords: RX Rate-Limiter, Multi-host |
|
Discovered in Version: 28.34.1002 |
|
2870970 |
Description: GTP encapsulation (flex parser profile 3) is limited to the NIC domain. Encapsulating in the FDB domain will render a 0-size length in GTP header. |
Workaround: N/A |
|
Keywords: GTP encapsulation |
|
Discovered in Version: 28.34.1002 |
|
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 |
|
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 |
|
- |
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:
|
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 |