# Does CX8/CX7 nic support Out-of-Order Data Placement in ROCEv2 mde?

**URL:** <https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836>\
**Category:** Mellanox OFED\
**Tags:** mlnx\_ofed\
**Created:** [December 8, 2025, 8:09am UTC](https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836 "2025-12-08T08:09:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![906787108](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@906787108](https://forums.developer.nvidia.com/u/906787108)\
**Post date:** [December 8, 2025, 8:09am UTC](https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836/1 "2025-12-08T08:09:52Z")

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I found the Out-of-Order Data Placement only described in Infiniband network, but not mentioned in RoCEv2 Ethernet mode. I want to know if it is supported in ROCEv2 mode for mellanox CX7 or CX8?

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<div class="post-metadata">

**Author:** ![906787108](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@906787108](https://forums.developer.nvidia.com/u/906787108)\
**Post date:** [December 8, 2025, 8:11am UTC](https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836/2 "2025-12-08T08:11:24Z")

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If it support, How to enable it? Thanks a lot!

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<div class="post-metadata">

**Author:** ![906787108](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@906787108](https://forums.developer.nvidia.com/u/906787108)\
**Post date:** [December 8, 2025, 8:31am UTC](https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836/3 "2025-12-08T08:31:19Z")

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If not use mellanox’s switch, only use the nic, is it supportted?

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<div class="post-metadata">

**Author:** ![namrata1](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@namrata1](https://forums.developer.nvidia.com/u/namrata1)\
**Post date:** [February 10, 2026, 12:42am UTC](https://forums.developer.nvidia.com/t/does-cx8-cx7-nic-support-out-of-order-data-placement-in-rocev2-mde/353836/4 "2026-02-10T00:42:13Z")

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Hi 906787108,

Thank you for posting your query on NVIDIA Community.

If the question relates to the out of sequence counter found under sysfs(hardware counters), I would like to inform that although the path shows infiniband, it is also applicable to ETH interfaces as long as you are using MLNX OFED/ DOCA OFED drivers.

For example, here is an output from my internal lab system that has a ConnectX-7 ETH interface with DOCA OFED

root@hostname:~# ofed\_info -s  
OFED-internal-25.10-1.7.1:

root@hostname:~# mst status -v  
MST modules:

```auto
MST PCI module is not loaded
MST PCI configuration module loaded

```

## PCI devices:

DEVICE\_TYPE MST PCI RDMA NET NUMA VFIO  
ConnectX7(rev:0) /dev/mst/mt4129\_pciconf1 c2:00.0 mlx5\_1 net-ibs6 1

**ConnectX7(rev:0) /dev/mst/mt4129\_pciconf0 42:00.0 mlx5\_0 net-ens3np0** 0

root@hostname:~# cat /sys/class/infiniband/mlx5\_0/ports/1/hw\_counters/out\_of\_buffer  
0  
root@hostname:~# cat /sys/class/infiniband/mlx5\_0/ports/1/hw\_counters/out\_of\_sequence  
0

Thanks,

NVEX Networking Technical Support.