# ConnectX7 no physical link **URL:** \ **Category:** Mellanox OFED\ **Created:** [November 19, 2025, 1:30pm UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962 "2025-11-19T13:30:28Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![a.oui](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@a.oui](https://forums.developer.nvidia.com/u/a.oui)\ **Post date:** [November 19, 2025, 1:30pm UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962/1 "2025-11-19T13:30:28Z")
Hi, I am trying to install the Mellanox OFED tools to use the Mellanox Technologies MT2910 Family [ConnectX-7] network card. I am using the tools provided by NVIDIA: > **[Mellanox OFED (MLNX\_OFED) Software: End-User Agreement](https://developer.nvidia.com/networking/mlnx-ofed-eula?mtag=linux_sw_drivers&mrequest=downloads&mtype=ofed&mver=MLNX_OFED-24.10-3.2.5.0&mname=MLNX_OFED_LINUX-24.10-3.2.5.0-ubuntu22.04-aarch64.iso)** The tools installed normally and I have two network interfaces on Linux but no physical link. Is this normal ? Is there anything else I need to do to get the card working ? Here is the log containing information about physical links : ethtool ibP5p1s0f0 Settings for ibP5p1s0f0: Supported ports: [] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 100000Mb/s Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal netlink error: Operation not permitted Link detected: no Here are the target specifications : Hardware : AGX Orin OS : Ubuntu 22.04 Kernel version : Linux ubuntu 5.15.148-tegra #1 SMP PREEMPT Tue Jan 7 17:14:38 PST 2025 aarch64 aarch64 aarch64 GNU/Linux Device Type: ConnectX7 Part Number: MCX755106AC-HEA\_Ax Description: NVIDIA ConnectX-7 HHHL adapter Card; 200GbE (default mode) / NDR200 IB; Dual-port QSFP112; PCIe 5.0 x16 with x16 PCIe extension option; Crypto Enabled; Secure Boot Enabled; PSID: MT\_0000001045 Versions: Current Available FW 28.43.3608 28.43.3608 PXE 3.7.0500 N/A UEFI 14.37.0050 N/A ---
**Author:** ![zhangsuo](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@zhangsuo](https://forums.developer.nvidia.com/u/zhangsuo)\ **Post date:** [December 16, 2025, 3:28am UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962/2 "2025-12-16T03:28:16Z")
Hi Do you want use IB mode or Ethernet Mode ? Thanks, Suo ---
**Author:** ![a.oui](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@a.oui](https://forums.developer.nvidia.com/u/a.oui)\ **Post date:** [January 5, 2026, 3:03pm UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962/3 "2026-01-05T15:03:29Z")
Hi, I want to use Ethernet mode. Thanks, Bruce ---
**Author:** ![zhangsuo](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@zhangsuo](https://forums.developer.nvidia.com/u/zhangsuo)\ **Post date:** [January 6, 2026, 6:07am UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962/4 "2026-01-06T06:07:31Z")
Could you please provide the output of #ibstatus Thanks, Suo ---
**Author:** ![a.oui](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@a.oui](https://forums.developer.nvidia.com/u/a.oui)\ **Post date:** [January 7, 2026, 8:43am UTC](https://forums.developer.nvidia.com/t/connectx7-no-physical-link/351962/5 "2026-01-07T08:43:54Z")
Here is the result of the ibstatus command: ```auto Infiniband device 'mlx5_0' port 1 status: ``` ``` default gid: fe80:0000:0000:0000:ba3f:d2ff:fefe:f4cc base lid: 0x0 sm lid: 0x0 state: 1: DOWN phys state: 3: Disabled rate: 40 Gb/sec (4X QDR) link_layer: Ethernet ``` Infiniband device ‘mlx5\_1’ port 1 status: ``` default gid: fe80:0000:0000:0000:ba3f:d2ff:fefe:f4cd base lid: 0x0 sm lid: 0x0 state: 4: ACTIVE phys state: 5: LinkUp rate: 100 Gb/sec (4X EDR) link_layer: Ethernet ``` Infiniband device ‘mlx5\_2’ port 1 status: ``` default gid: fe80:0000:0000:0000:cc40:f303:008c:6832 base lid: 0xffff sm lid: 0x0 state: 1: DOWN phys state: 2: Polling rate: 10 Gb/sec (4X SDR) link_layer: InfiniBand ``` Infiniband device ‘mlx5\_3’ port 1 status: ``` default gid: fe80:0000:0000:0000:cc40:f303:008c:6833 base lid: 0xffff sm lid: 0x0 state: 1: DOWN phys state: 2: Polling rate: 10 Gb/sec (4X SDR) link_layer: InfiniBand ``` On my machine, I have a ConnectX-5 card and a ConnectX-7 card. I only have this problem with the ConnectX7.