# \#ethernet-adapter-cards **URL:** https://forums.developer.nvidia.com/tag/ethernet-adapter-cards/645.md [Latest](https://forums.developer.nvidia.com/latest.md) · [Categories](https://forums.developer.nvidia.com/categories.md) · [Tags](https://forums.developer.nvidia.com/tags.md) --- ## [ConnectX-6 Lx OVS TC-flower offload: latency higher than OVS-kernel?](https://forums.developer.nvidia.com/t/connectx-6-lx-ovs-tc-flower-offload-latency-higher-than-ovs-kernel/382788)
**Author:** [@quoctv7](https://forums.developer.nvidia.com/u/quoctv7)\ **Replies:** 0\ **Last updated:** [September 9, 2026, 9:25am UTC](https://forums.developer.nvidia.com/t/connectx-6-lx-ovs-tc-flower-offload-latency-higher-than-ovs-kernel/382788 "2026-09-09T09:25:30Z")
We compared two setups with the same overlay (OpenStack/OVN, Geneve, Security Groups), VM → VM across two nodes: OVS-TC offload: ConnectX-6 Lx MCX631102AN-ADA, fw 26.43.8016, Ubuntu 22.04 kernel 6.8 inbox mlx5\_core, sw… --- ## [Mellanox QSFP breakout](https://forums.developer.nvidia.com/t/mellanox-qsfp-breakout/349775)
**Author:** [@greg.pring](https://forums.developer.nvidia.com/u/greg.pring)\ **Replies:** 8\ **Last updated:** [August 30, 2026, 9:53am UTC](https://forums.developer.nvidia.com/t/mellanox-qsfp-breakout/349775 "2026-08-30T09:53:37Z")
Is it possible to use a QSFP port to connect four 10Ge (or perhaps 25Ge) Ethernet cables. I’d need to reconfigure the ConnectX 7 card to configure these as separate Ethernet adapters for each transceiver lane. Some of th… --- ## [Unexpected source mac seen when sending out roce traffic when using ib\_send\_bw/-R/rdma\_cm](https://forums.developer.nvidia.com/t/unexpected-source-mac-seen-when-sending-out-roce-traffic-when-using-ib-send-bw-r-rdma-cm/353188)
**Author:** [@vsimola](https://forums.developer.nvidia.com/u/vsimola)\ **Replies:** 2\ **Last updated:** [February 19, 2026, 9:52am UTC](https://forums.developer.nvidia.com/t/unexpected-source-mac-seen-when-sending-out-roce-traffic-when-using-ib-send-bw-r-rdma-cm/353188 "2026-02-19T09:52:05Z")
Hi, I have a bunch of hosts talking rocev2 across LACP link aggregates terminating to two different switches (EVPN/ESI) and I’ve noticed that the switches keep blocking ports due to duplicate mac addresses seen. E.g. ma… --- ## [Can NVIDIA ConnectX-7 (MCX755106AC-HEAT) Support 100G x1 (Single-Lane 100G)?](https://forums.developer.nvidia.com/t/can-nvidia-connectx-7-mcx755106ac-heat-support-100g-x1-single-lane-100g/331324)
**Author:** [@amarnathpujari18](https://forums.developer.nvidia.com/u/amarnathpujari18)\ **Replies:** 7\ **Last updated:** [January 19, 2026, 1:57am UTC](https://forums.developer.nvidia.com/t/can-nvidia-connectx-7-mcx755106ac-heat-support-100g-x1-single-lane-100g/331324 "2026-01-19T01:57:59Z")
I am using ConnectX-7 (P/N: MCX755106AC-HEAT). It is a dual QSFP port NIC. I have connected QSFP112G-400G cable to it and trying to bring-up 100G x1 link. But I am unable to do so. I can see in ethtool utility that, Con… --- ## [Can ConnectX-6 mellanox 100G/40G network card work with breakout 4x10g?](https://forums.developer.nvidia.com/t/can-connectx-6-mellanox-100g-40g-network-card-work-with-breakout-4x10g/335844)
**Author:** [@Toxic\_avenger](https://forums.developer.nvidia.com/u/Toxic_avenger)\ **Replies:** 2\ **Last updated:** [January 12, 2026, 6:09am UTC](https://forums.developer.nvidia.com/t/can-connectx-6-mellanox-100g-40g-network-card-work-with-breakout-4x10g/335844 "2026-01-12T06:09:29Z")
Hello, I have a ConnectX-6 100G network card (MCX653106A-ECA) and a QSFP+ 40GBASE-SR4 connected to it. My question is how to configure the mellanox card so that it recognizes breakout 4x10, provided that only 1 link out… --- ## [100G\_4X link speed not able to configure with ConnectionX-8 C8240 nic card](https://forums.developer.nvidia.com/t/100g-4x-link-speed-not-able-to-configure-with-connectionx-8-c8240-nic-card/355502)
**Author:** [@gang.1.chen](https://forums.developer.nvidia.com/u/gang.1.chen)\ **Replies:** 2\ **Last updated:** [January 10, 2026, 4:15am UTC](https://forums.developer.nvidia.com/t/100g-4x-link-speed-not-able-to-configure-with-connectionx-8-c8240-nic-card/355502 "2026-01-10T04:15:18Z")
Hi 100G\_4X link speed can not configure with CX-8 C8240 nic card + MCP1600-C005E26L DAC cable. cran@cran:~$ sudo mlxlink -d a0:00.0 -p 1 --speeds 100G\_4X --link\_mode\_force Operational Info State … --- ## [Jetson Orin AGX w/ Jetson Linux 36.4.4 Kernel panic when disconnecting Ethernet cable](https://forums.developer.nvidia.com/t/jetson-orin-agx-w-jetson-linux-36-4-4-kernel-panic-when-disconnecting-ethernet-cable/340087)
**Author:** [@alex490](https://forums.developer.nvidia.com/u/alex490)\ **Replies:** 2\ **Last updated:** [July 25, 2025, 2:20am UTC](https://forums.developer.nvidia.com/t/jetson-orin-agx-w-jetson-linux-36-4-4-kernel-panic-when-disconnecting-ethernet-cable/340087 "2025-07-25T02:20:24Z")
On Jetson Orin AGX running Jetson Linux 36.4.4, a kernel panic is caused when disconnecting and then reconnecting the Ethernet cable to the ethernet port. The kernel message is this: \[ 477.224200\] nvethernet 6800000.e… --- ## [Delay in 10GbE Link Reconnection After Cable Re-Plug on Jetson AGX Orin](https://forums.developer.nvidia.com/t/delay-in-10gbe-link-reconnection-after-cable-re-plug-on-jetson-agx-orin/333978)
**Author:** [@Parashuram.Biradar](https://forums.developer.nvidia.com/u/Parashuram.Biradar)\ **Replies:** 5\ **Last updated:** [June 20, 2025, 3:27am UTC](https://forums.developer.nvidia.com/t/delay-in-10gbe-link-reconnection-after-cable-re-plug-on-jetson-agx-orin/333978 "2025-06-20T03:27:19Z")
Hello Team, We are facing an issue with the Marvel 88X3310PA1-BUS4I000 PHY10GbE Ethernet interface on our Jetson AGX Orin-based custom hardware. After a system boot or reboot, if the RJ45 Ethernet cable is already conn… --- ## [How to get transceiver current or power consumption via CX7 or CX8?](https://forums.developer.nvidia.com/t/how-to-get-transceiver-current-or-power-consumption-via-cx7-or-cx8/329947)
**Author:** [@derek.wei](https://forums.developer.nvidia.com/u/derek.wei)\ **Replies:** 3\ **Last updated:** [April 18, 2025, 12:21am UTC](https://forums.developer.nvidia.com/t/how-to-get-transceiver-current-or-power-consumption-via-cx7-or-cx8/329947 "2025-04-18T00:21:35Z")
Hi Nvidia, After a transceiver is inserted to ConnectX-7 or CX8 NIC, is there a way to get transceiver current and power consumption? --- ## [Mellanox ConnectX-5 "Cable error, Power budget exceeded" errors when using optical cables with QSFP28 DR1](https://forums.developer.nvidia.com/t/mellanox-connectx-5-cable-error-power-budget-exceeded-errors-when-using-optical-cables-with-qsfp28-dr1/309598)
**Author:** [@jay.rhine](https://forums.developer.nvidia.com/u/jay.rhine)\ **Replies:** 1\ **Last updated:** [December 13, 2024, 6:39am UTC](https://forums.developer.nvidia.com/t/mellanox-connectx-5-cable-error-power-budget-exceeded-errors-when-using-optical-cables-with-qsfp28-dr1/309598 "2024-12-13T06:39:10Z")
We have recently moved some servers that are using Mellanox ConnectX-5 Ex cards from a DAC back Solution to a Optical Cable based solution with QSFP28 DR1 optics. On our servers with Connect-x EX cards, we are seeing an… --- ## [ConnectX-4 Lx EN are unable to configure the port UP and Active state](https://forums.developer.nvidia.com/t/connectx-4-lx-en-are-unable-to-configure-the-port-up-and-active-state/297306)
**Author:** [@emb3](https://forums.developer.nvidia.com/u/emb3)\ **Replies:** 1\ **Last updated:** [June 24, 2024, 5:30am UTC](https://forums.developer.nvidia.com/t/connectx-4-lx-en-are-unable-to-configure-the-port-up-and-active-state/297306 "2024-06-24T05:30:05Z")
I am using Ubuntu 18.04.6, Kernel 5.4.0-150-generic, x86\_64 system. Below are the commands I used, results I got: lspci -v | grep Mellanox 01:00.0 Ethernet controller: Mellanox Technologies MT27710 Family \[ConnectX-4 Lx… --- ## [NVIDIA Mellanox MCX512A-ACAT ConnectX®-5 EN Network Interface Card Programming](https://forums.developer.nvidia.com/t/nvidia-mellanox-mcx512a-acat-connectx-5-en-network-interface-card-programming/283076)
**Author:** [@drobin](https://forums.developer.nvidia.com/u/drobin)\ **Replies:** 1\ **Last updated:** [March 20, 2024, 1:33am UTC](https://forums.developer.nvidia.com/t/nvidia-mellanox-mcx512a-acat-connectx-5-en-network-interface-card-programming/283076 "2024-03-20T01:33:23Z")
Is it possible to program the NVIDIA Mellanox MCX512A-ACAT ConnectX®-5 EN Network Interface Card cards? Does it support the P4 programming language? is there any guide for this purpose? --- ## [RSS does not work (one TCP flow traffic go to more than one queues)](https://forums.developer.nvidia.com/t/rss-does-not-work-one-tcp-flow-traffic-go-to-more-than-one-queues/284723)
**Author:** [@nj\_zxw10](https://forums.developer.nvidia.com/u/nj_zxw10)\ **Replies:** 1\ **Last updated:** [March 7, 2024, 8:28am UTC](https://forums.developer.nvidia.com/t/rss-does-not-work-one-tcp-flow-traffic-go-to-more-than-one-queues/284723 "2024-03-07T08:28:33Z")
I used MLX CX-5 NIC and CentOS 7 system, with only one TCP flow I found the traffic received from more than one queues. (By checking the output of /proc/interrupts, I found more than one lines’ count increased), that is,… --- ## [What is the latency of a PFC Ethernet Pause request on ConnectX-5 cards?](https://forums.developer.nvidia.com/t/what-is-the-latency-of-a-pfc-ethernet-pause-request-on-connectx-5-cards/268217)
**Author:** [@burkhardt](https://forums.developer.nvidia.com/u/burkhardt)\ **Replies:** 1\ **Last updated:** [October 4, 2023, 9:23am UTC](https://forums.developer.nvidia.com/t/what-is-the-latency-of-a-pfc-ethernet-pause-request-on-connectx-5-cards/268217 "2023-10-04T09:23:53Z")
We have a very unique use-case where we transmit data from a Linux server (Ubuntu) via ConnectX-5 to an FPGA. The FPGA cannot handle 100G of traffic and controls the incomming RoCE traffic using Ethernet PFC Pause packe… --- ## [PCIe 10G ethernet transfer performance far from spec](https://forums.developer.nvidia.com/t/pcie-10g-ethernet-transfer-performance-far-from-spec/263053)
**Author:** [@hermes\_wu](https://forums.developer.nvidia.com/u/hermes_wu)\ **Replies:** 21\ **Last updated:** [August 17, 2023, 7:18am UTC](https://forums.developer.nvidia.com/t/pcie-10g-ethernet-transfer-performance-far-from-spec/263053 "2023-08-17T07:18:56Z")
Hi, We conduct 10G ethernet test on Nvidia EVB and our own design platform with NV SOM as attachment. According to the test results, the transfer speed is far below from 10G spec, at around 5 or 6G only. Our 10G IC so… --- ## [Mellanox Connectx-6Dx : Receiving Packets out of order](https://forums.developer.nvidia.com/t/mellanox-connectx-6dx-receiving-packets-out-of-order/209908)
**Author:** [@Burto](https://forums.developer.nvidia.com/u/Burto)\ **Replies:** 5\ **Last updated:** [July 26, 2023, 5:52pm UTC](https://forums.developer.nvidia.com/t/mellanox-connectx-6dx-receiving-packets-out-of-order/209908 "2023-07-26T17:52:16Z")
Test-setup: Windows : Server 2019 x64 NIC : Mellanox Connectx-6Dx Mlx WINOF2 : 2.80.25134.0 Tcpreplay 4.4.1 as Traffic generator pcap used : https://s3.amazonaws.com/tcpreplay-pcap-files/smallFlows.pcap Sending packe… --- ## [ConnectX 6 DX 22.37.1014](https://forums.developer.nvidia.com/t/connectx-6-dx-22-37-1014/259628)
**Author:** [@kindleforme2](https://forums.developer.nvidia.com/u/kindleforme2)\ **Replies:** 1\ **Last updated:** [July 17, 2023, 4:50pm UTC](https://forums.developer.nvidia.com/t/connectx-6-dx-22-37-1014/259628 "2023-07-17T16:50:53Z")
Hi, Is there any known issue with ConnectX 7 22.37.1014? I have noticed that the VF driver fails to ping external network. It pings fine using the earlier firmware which is 22.36.1010. Thanks, Marc --- ## [Which Nvidia products should I purchase for synchronized data transfer of 2gb/s over the ethernet interface?](https://forums.developer.nvidia.com/t/which-nvidia-products-should-i-purchase-for-synchronized-data-transfer-of-2gb-s-over-the-ethernet-interface/259307)
**Author:** [@aadil.ahmed](https://forums.developer.nvidia.com/u/aadil.ahmed)\ **Replies:** 1\ **Last updated:** [July 10, 2023, 7:23pm UTC](https://forums.developer.nvidia.com/t/which-nvidia-products-should-i-purchase-for-synchronized-data-transfer-of-2gb-s-over-the-ethernet-interface/259307 "2023-07-10T19:23:03Z")
Hi, I am new to Nvidia Jetson community and I am currently deciding to buy some Nvidia products I would like to like to achieve somewhat like the following taken from Nvidia Developer channel Instead of cameras wit… --- ## [40Gb ConnectX-3 can only reach about 5Gbps on Jetson AGX Xavier](https://forums.developer.nvidia.com/t/40gb-connectx-3-can-only-reach-about-5gbps-on-jetson-agx-xavier/256579)
**Author:** [@TT\_114](https://forums.developer.nvidia.com/u/TT_114)\ **Replies:** 9\ **Last updated:** [June 29, 2023, 6:42am UTC](https://forums.developer.nvidia.com/t/40gb-connectx-3-can-only-reach-about-5gbps-on-jetson-agx-xavier/256579 "2023-06-29T06:42:24Z")
Hi， My Xavier’s operating system is JetPack 4.6.3. I have installed Mellanox ConnectX-3 in its PCIe slot. This card seems to be identified as 40Gb, but it can only reach about 5 Gbps instead of the expected 23 Gbps. I h… --- ## [NVIDIA® Native ESXi drivers - Management Tool NMLXCLI v1.17.14.2 are not downloadable](https://forums.developer.nvidia.com/t/nvidia-native-esxi-drivers-management-tool-nmlxcli-v1-17-14-2-are-not-downloadable/256829)
**Author:** [@richard.kessay](https://forums.developer.nvidia.com/u/richard.kessay)\ **Replies:** 1\ **Last updated:** [June 22, 2023, 12:46am UTC](https://forums.developer.nvidia.com/t/nvidia-native-esxi-drivers-management-tool-nmlxcli-v1-17-14-2-are-not-downloadable/256829 "2023-06-22T00:46:35Z")
Hi Team, Is there a workaround for the Mellanox Management Tool version NMLXCLI v1.17.14.2 download? I’m trying to download this tool:https://network.nvidia.com/products/ethernet-drivers/vmware/esxi-server/downloads/So… --- ## [How to remove flow steering rules on Mellanox ConnectX-5 EN NIC?](https://forums.developer.nvidia.com/t/how-to-remove-flow-steering-rules-on-mellanox-connectx-5-en-nic/251803)
**Author:** [@yangzhou1](https://forums.developer.nvidia.com/u/yangzhou1)\ **Replies:** 2\ **Last updated:** [May 9, 2023, 2:57am UTC](https://forums.developer.nvidia.com/t/how-to-remove-flow-steering-rules-on-mellanox-connectx-5-en-nic/251803 "2023-05-09T02:57:40Z")
Hi Community, I am using a Mellanox ConnectX-5 EN 100G NIC (driver mlx5\_core 5.0-1.0.0.0, firmware 16.28.4000 (MT\_0000000012)). However, I find many (seems) preset flow steering rules in the NIC (I am using mlx\_fs\_dump … --- ## [Does Jetson Orin NX support PTP in ethernet?](https://forums.developer.nvidia.com/t/does-jetson-orin-nx-support-ptp-in-ethernet/246619)
**Author:** [@Mr\_JP](https://forums.developer.nvidia.com/u/Mr_JP)\ **Replies:** 2\ **Last updated:** [March 20, 2023, 7:20am UTC](https://forums.developer.nvidia.com/t/does-jetson-orin-nx-support-ptp-in-ethernet/246619 "2023-03-20T07:20:57Z")
Hi Nvidia team, I would like to know whether the jetson Orin NX/Nano modules support the ptp feature on the default ethernet available on the SOM --- ## [MCX516A-CDAT Compatibility with QSFP28 Line Switches](https://forums.developer.nvidia.com/t/mcx516a-cdat-compatibility-with-qsfp28-line-switches/240961)
**Author:** [@MakerOfGames](https://forums.developer.nvidia.com/u/MakerOfGames)\ **Replies:** 2\ **Last updated:** [January 30, 2023, 6:10pm UTC](https://forums.developer.nvidia.com/t/mcx516a-cdat-compatibility-with-qsfp28-line-switches/240961 "2023-01-30T18:10:45Z")
I can’t seem to find a compatibility matrix for the MCX516A-CDAT ConnectX-5 cards, showing what third-party QSFP28 switches they are usable with. Does anyone have some links? We are trying to pick up various switches to … --- ## [Mellonax Loopback Test](https://forums.developer.nvidia.com/t/mellonax-loopback-test/240030)
**Author:** [@vairamhcet](https://forums.developer.nvidia.com/u/vairamhcet)\ **Replies:** 1\ **Last updated:** [January 26, 2023, 3:29pm UTC](https://forums.developer.nvidia.com/t/mellonax-loopback-test/240030 "2023-01-26T15:29:18Z")
Hi We tried the loopback test for Mellanox cards, there are two cards with two ports each. Each port from a Ethernet cards are shorted with SFP28 DAC Cable. In Ubuntu OS, the ports are correctly updating as UP and DOWN. … --- ## [ConnectX-3 Cards Ejectable (Hot-plug)](https://forums.developer.nvidia.com/t/connectx-3-cards-ejectable-hot-plug/230347)
**Author:** [@autonomous120](https://forums.developer.nvidia.com/u/autonomous120)\ **Replies:** 1\ **Last updated:** [October 26, 2022, 12:05pm UTC](https://forums.developer.nvidia.com/t/connectx-3-cards-ejectable-hot-plug/230347 "2022-10-26T12:05:46Z")
Hello ! I use the ConnectX-3 Cards via a PCI-e 3.0x8 connector card in Windows 10, it works well. Unfortunately, Windows 10 recognized the ConnectX-3 Cards as an ejectable device. The WinOF driver 5.50.53000 has been co… --- ## [Will this PCI LAN card work on Orin AGX devkit?](https://forums.developer.nvidia.com/t/will-this-pci-lan-card-work-on-orin-agx-devkit/229623)
**Author:** [@Andrey1984](https://forums.developer.nvidia.com/u/Andrey1984)\ **Replies:** 9\ **Last updated:** [October 14, 2022, 7:27pm UTC](https://forums.developer.nvidia.com/t/will-this-pci-lan-card-work-on-orin-agx-devkit/229623 "2022-10-14T19:27:40Z")
--- ## [LAN configuration](https://forums.developer.nvidia.com/t/lan-configuration/229002)
**Author:** [@varada.k](https://forums.developer.nvidia.com/u/varada.k)\ **Replies:** 3\ **Last updated:** [September 29, 2022, 5:36am UTC](https://forums.developer.nvidia.com/t/lan-configuration/229002 "2022-09-29T05:36:35Z")
Hi , We are using Jetson L4T 32.7.2 with customized carrier board. One Ethernet port connected over PCI (Eth1) , that is working as expected . Now we have unmanaged 2 more ethernet port (eth0) which is connected thro… --- ## [Windows DPDK bifurcation support](https://forums.developer.nvidia.com/t/windows-dpdk-bifurcation-support/212498)
**Author:** [@martin.birks](https://forums.developer.nvidia.com/u/martin.birks)\ **Replies:** 1\ **Last updated:** [May 22, 2022, 1:12pm UTC](https://forums.developer.nvidia.com/t/windows-dpdk-bifurcation-support/212498 "2022-05-22T13:12:38Z")
We have been looking into adding kernel bypass support for Mellanox NICs on Windows. Could you tell me the current state of DPDK support for Mellanox NICs on Windows, in particular is bifurcation supported? If this is su… --- ## [Mellanox Connectx-6Dx - support for Symmetric RSS Hash & Inner IP](https://forums.developer.nvidia.com/t/mellanox-connectx-6dx-support-for-symmetric-rss-hash-inner-ip/209903)
**Author:** [@Burto](https://forums.developer.nvidia.com/u/Burto)\ **Replies:** 2\ **Last updated:** [April 1, 2022, 2:22pm UTC](https://forums.developer.nvidia.com/t/mellanox-connectx-6dx-support-for-symmetric-rss-hash-inner-ip/209903 "2022-04-01T14:22:54Z")
Test-setup: Windows : Server 2019 x64 NIC : Mellanox Connectx-6Dx Mlx WINOF2 : 2.80.25134.0 DPDK versions under Eval : 21.11, 22.03\_rc2 Does the adapter have support for Symmetric RSS Hash & Inner IP (IP inside tunnel… --- ## [Flow Management features on Windows DPDK](https://forums.developer.nvidia.com/t/flow-management-features-on-windows-dpdk/209904)
**Author:** [@Burto](https://forums.developer.nvidia.com/u/Burto)\ **Replies:** 2\ **Last updated:** [April 1, 2022, 2:19pm UTC](https://forums.developer.nvidia.com/t/flow-management-features-on-windows-dpdk/209904 "2022-04-01T14:19:21Z")
Test-setup: Windows : Server 2019 x64 NIC : Mellanox Connectx-6Dx Mlx WINOF2 : 2.80.25134.0 DPDK versions under Eval : 21.11, 22.03\_rc2 Are Flow Management features (flow rules, distribution, steering etc.) available … [Next page](https://forums.developer.nvidia.com/tag/ethernet-adapter-cards/645.md?match_all_tags=true&page=1&tags%5B%5D=ethernet-adapter-cards)