Known Issues
VF Network Function Limitations in SRIOV 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 |
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Known Issues
Internal Ref. | Issue |
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: 22.37.1014 | |
3449960 | Description: In some cases, performance degradation might be experienced when wrong usage of extra engines dedicated to DMA is removed. |
Workaround: N/A | |
Keywords: Performance | |
Discovered in Version: 22.37.1014 | |
2878841 | Description: Firmware rollback fails for the signature retransmit flow if the QPN field is configured in the mkey (as it only allows the given QP to use this Mkey) as the firmware rollback flow relies on an internal QP that uses the mkey. |
Workaround: N/A | |
Keywords: Signature retransmit flow | |
Discovered in Version: 22.37.1014 | |
3171699 | Description: Occasionally, after a few toggles, link may not raise when changing the speed when in loopback mode. |
Workaround: N/A | |
Keywords: Link speed, loopback | |
Discovered in Version: 22.37.1014 | |
2444892 | Description: PMA loopback feature is supported only with NRZ speeds . |
Workaround: N/A | |
Keywords: PMA loopback, NRZ | |
Discovered in Version: 22.36.1010 | |
2745023 | Description: RDMA statistics for sent packets are not updated when RoCE traffic is running in a loopback on the same uplink. |
Workaround: N/A | |
Keywords: RoCE | |
Discovered in Version: 22.35.2302 | |
3266807 | Description: PMA loop-back is not supported on PAM4 speeds. |
Workaround: N/A | |
Keywords: Counters, CRC | |
Discovered in Version: 22.35.2302 | |
3267506 | Description: CRC is included in the traffic byte counters as a port byte counter. |
Workaround: N/A | |
Keywords: Counters, CRC | |
Discovered in Version: 22.35.2302 | |
3235397 | Description: PCC force mode does not work if the link is raised after disabling DCQCN with PPCC. |
Workaround: N/A | |
Keywords: PCC | |
Discovered in Version: 22.35.1012 | |
3200779 | Description: Changing dynamic PCIe link width is not supported. |
Workaround: N/A | |
Keywords: PCIe | |
Discovered in Version: 22.34.1002 | |
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: 22.34.1002 | |
2169950 | Description: When decapsulation on a packet occurs, the FCS indication is not calculated correctly. |
Workaround: N/A | |
Keywords: FCS | |
Discovered in Version: 22.34.1002 | |
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: 22.34.1002 | |
3106146 | Description: Live migration of MPV affiliated function pair is not supported when port numbers are changed. Each function should stay on the same port number as before migration. |
Workaround: N/A | |
Keywords: MPV live migration | |
Discovered in Version: 22.34.1002 | |
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: 22.34.1002 | |
2937445 | Description: A long linkup time can be seen 1/5 toggles when raising link in autoneg flow in ConnectX-6 Dx vs Ixia in 200G_4x. |
Workaround: N/A | |
Keywords: AN, port toggling, Ixia | |
Discovered in Version: 22.33.1048 | |
2850003 | Description: Occasionally, when rising a logical link, the link recovery counter is increase by 1. |
Workaround: N/A | |
Keywords: Link recovery counter | |
Discovered in Version: 22.33.1048 | |
2825403 | Description: When connecting NVIDIA Spectrum-3 devices and ConnectX-6 Dx devices with DAC MCP7F80-W002R26 while splitting to 8x with 50GbE per lane in force mode, effective BER may appear. |
Workaround: N/A | |
Keywords: NVIDIA Spectrum-3, Cables, Split | |
Discovered in Version: 22.32.2004 | |
2866931 | Description: When the host powers up directly into the standby mode, the adapter may not handle WOL packets. |
Workaround: N/A | |
Keywords: WOL packets | |
Discovered in Version: 22.32.1010 | |
2864238 | Description: VPD cannot be accessed after firmware upgrade or reset when the following sequence is performed:
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Workaround: Run the upgrade or reset sequence as follow:
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Keywords: VDP | |
Discovered in Version: 22.32.1010 | |
2863674 | Description: Host management magic packet is not supported in Socket-Direct adapter cards' single PF per Numa mode. |
Workaround: N/A | |
Keywords: Socket-Direct, single PF per Numa, host management, magic packet | |
Discovered in Version: 22.32.1010 | |
2836032 | Description: When using SW steering mlx5dv_dr API to create rules containing encapsulation actions in MLNX_OFED v5.5-1.x.x.x, the user should upgrade firmware to the latest version. Otherwise, the maximum number of encapsulation actions that can be created will be limited to only 16K, and degradation for the rule insertion rate is expected compared to MLNX_OFED v5.4-.x.x.x.x. |
Workaround: N/A | |
Keywords: Encapsulation rules insertion rate, firmware upgrade, MLNX_OFED | |
Discovered in Version: 22.32.1010 | |
2756866 / 2740651 | Description: On rare occasions, following fast linkup (toggle link from the NIC side) a few effective errors might be seen in the first 20 seconds. |
Workaround: Perform link maintenance to fix it so additional errors will not be seen afterwards. | |
Keywords: Link toggle, effective errors | |
Discovered in Version: 22.31.2006 | |
- | Description: Downgrading to an older firmware version that does not support the new flash type is not supported. Doing so will result in burning process failure and unknown errors will be received. The errors will be more informative in the next tools' version. |
Workaround: N/A | |
Keywords: Burning tools, firmware downgrading, flash type | |
Discovered in Version: 22.31.2006 | |
2667681 | Description: As the Connection Tracking (CT) is not moved to SW state after receiving a TCP RST packet, any packet that matches the windows even after the RST is marked as a valid packets. |
Workaround: N/A | |
Keywords: Connection Tracking | |
Discovered in Version: 22.31.1014 | |
2607158 | Description: When using more than 512 MSIX per function, the CPU PCIe Completion Timeout Value needs to be set to a value of 200us or higher. |
Workaround: N/A | |
Keywords: Extended MSIX, Asymmetrical MSIX configuration, PF_NUM_PF_MSIX_VALID, PF_NUM_PF_MSIX | |
Discovered in Version: 22.31.1014 | |
2577966 | Description: Fast linkup is not supported when connecting to an Ixia switch. |
Workaround: N/A | |
Keywords: Fast linkup | |
Discovered in Version: 22.30.1004 | |
2446583 | Description: On rare occasions, when both network devices are NVIDIA, PAM4 link will raise with several effective errors. These errors will not affect traffic once the link is up. |
Workaround: Clear counters once the link is up | |
Keywords: Effective errors | |
Discovered in Version: 22.29.2002 | |
2371060 | Description: When Emulated PCIe Switch is enabled, and the OS does resource reallocation, the OS boot process might halt. |
Workaround: N/A | |
Keywords: Emulated PCIe Switch | |
Discovered in Version: 22.29.1016 | |
2297201 | Description: Unable to complete migration when virtio device is in high traffic load (20/20 MPPS) as although vDPA hardware offload solution can support higher speed than the software solution, it needs to enable QEMU auto-converge to complete migration. For further information see: https://wiki.qemu.org/Features/AutoconvergeLiveMigration |
Workaround: Turn auto-converge on by adding "--auto-converge". For example: virsh migrate --verbose --live --persistent gen-l-vrt-295-005-CentOS-7.4 qemu+ssh://gen-l-vrt-295/system --unsafe --auto-converge | |
Keywords: virtio, vDPA, live migration | |
Discovered in Version: 22.29.1016 | |
2378593 | Description: Sub 1sec firmware update (fast reset flow) is not supported when updating from previous releases to the current one. Doing so may cause network disconnection events. |
Workaround: Use full reset flow for firmware upgrade/downgrade. | |
Keywords: Sub 1sec firmware update | |
Discovered in Version: 22.29.1016 | |
2384965 | Description: Eye-opening can cause effective errors on the port. |
Workaround: N/A | |
Keywords: Eye-opening | |
Discovered in Version: 22.29.1016 | |
2384849 / 2373640 | Description: Phyless Reset functionality is not supported when updating firmware from v22.28.4000 (and below) to v22.29.1016 and higher. |
Workaround: N/A | |
Keywords: Phyless Reset | |
Discovered in Version: 22.29.1016 | |
2213356 | Description: The following are the Steering Dump limitations:
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Workaround: N/A | |
Keywords: Steering Bump | |
Discovered in Version: 22.29.1016 | |
2365322 | Description: When configuring adapter card's Level Scheduling, a QoS tree leaf (QUEUE_GROUP) configured with default rate_limit and default bw_share, may not obey the QoS restrictions imposed by any of the leaf’s ancestors. |
Workaround: To prevent such a case, configure at least one of the following QoS attributes of a leaf: max_average_bw or bw_share | |
Keywords: QoS | |
Discovered in Version: 22.29.1016 | |
2201468 | Description: Running multiple resets ("mlxfwreset --sync=1") simultaneously is not functioning properly, |
Workaround: Wait a few seconds until you run "mlxfwreset --sync=0". | |
Keywords: mlxfwreset, reset-sync, reset, sync | |
Discovered in Version: 22.28.1002 | |
2089277 | Description: The CRC is being removed despite using the keep_crc flag, and the byte count of the packet are counted without the CRC. |
Workaround: N/A | |
Keywords: Decapsulated packets | |
Discovered in Version: 22.27.6008 | |
2149437 | Description: When the SLTP configuration is wrongly set, the “Bad status” explanation will not be presented (only error indication) to the user. |
Workaround: N/A | |
Keywords: SLTP configuration | |
Discovered in Version: 22.27.6008 | |
1895917 | Description: On Dual-Port devices, and only after Rx buffer modification, resetting all Physical Functions over one port (through reboot / driver restart / FLR), while there are active Physical Functions over the second port (which caused the Rx buffer changes), will cause the Rx buffer default values to be restored, although not expected by the active Physical Function on the second port. |
Workaround:
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Keywords: VoQ, Shared Buffer, Rx Bufffer, PFCC, PBMC, PPTB, SBCM, SBPM, SBPR, Rx buffer modifications | |
Discovered in Version: 22.27.2008 | |
2120378 | Description: Phyless Reset is not supported when using PAM4 mode. |
Workaround: N/A | |
Keywords: Phyless, PAM4 mode, 200GbE | |
Discovered in Version: 22.27.2008 | |
2071210 | Description: mlxconfig query for the BOOT_INTERRUPT_DIS TLV shows a wrong value in the "current value" field. |
Workaround: Use "next boot" indication to see the right value. | |
Keywords: mlxconfig | |
Discovered in Version: 22.27.1016 | |
2063038 | Description: PRBS is not functional when using Wedge switch. |
Workaround: N/A | |
Keywords: PRBS | |
Discovered in Version: 22.27.1016 | |
1796936 | Description: 200GbE Optical cables in Auto-Negotiation mode work only in 200GbE speed. |
Workaround: N/A | |
Keywords: Cables | |
Discovered in Version: 22.27.1016 | |
2038821 | Description: When running MH TCP, few packets are dropped every second due to no Receive WQEs. |
Workaround: Use 4K RX queue size: ethtool -G <intf> rx 4096 | |
Keywords: Performance, MH, WQE | |
Discovered in Version: 22.27.1016 | |
- | Description: After programing firmware in LF, power-cycle must be recovered. |
Workaround: N/A | |
Keywords: LF | |
Discovered in Version: 22.27.1016 | |
2029716 | Description: Software Reset does not work on ConnectX-6 Dx adapter cards. |
Workaround: N/A | |
Keywords: Software Reset | |
Discovered in Version: 22.27.1016 |