BugZero | VMware vCenter BugID 5206377c6ed0 - Mellanox ConnectX-4 or ConnectX-5 native ESXi driv...

VMware vCenter - Defect ID: 5206377c6ed0

Mellanox ConnectX-4 or ConnectX-5 native ESXi drivers might exhibit minor throughput degradation when Dynamic Receive Side Scaling (DYN_RSS) or Generic RSS (GEN_RSS) feature is turned on

VMware vCenter - Defect ID: 5206377c6ed0

Mellanox ConnectX-4 or ConnectX-5 native ESXi drivers might exhibit minor throughput degradation when Dynamic Receive Side Scaling (DYN_RSS) or Generic RSS (GEN_RSS) feature is turned on

Last updated on January 19th, 2026

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Overall: N/A

Severity: N/A

Community: N/A

Lifecycle: N/A

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Bug Details

Status: Known
Impact Category: Miscellaneous Issues
Workaround Available:

Description

Disclaimer

A custom bug ID has been generated as the vendor did not provide one: 5206377c6ed0

Overview

Mellanox ConnectX-4 or ConnectX-5 native ESXi drivers might exhibit less than 5 percent throughput degradation when DYN_RSS and GEN_RSS feature is turned on, which is unlikely to impact normal workloads.

Workaround

You can deactivate DYN_RSS and GEN_RSS feature with the following commands: # esxcli system module parameters set -m nmlx5_core -p "DYN_RSS=0 GEN_RSS=0" # reboot

Bug URLs

https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-release-notes/vsphere-vcenter-server-70u3v-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3l-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3m-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3n-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3o-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3p-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3q-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3r-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3s-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3u-release-notes.html https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/release-notes/vcenter-server-update-and-patch-releases/vsphere-vcenter-server-70u3w-release-notes.html

Change history

2025-10-27 changed to Known

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7.0.3.01400, 7.0.3.01500, 7.0.3.01600, 7.0.3.01700, 7.0.3.01800, 7.0.3.01900, 7.0.3.02000, 7.0.3.02100, 7.0.3.02300, 7.0.3.02400, 7.0.3.02500

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Affected versions:7.0.3.01400, 7.0.3.01500, 7.0.3.01600, 7.0.3.01700, 7.0.3.01800, 7.0.3.01900, 7.0.3.02000, 7.0.3.02100, 7.0.3.02300, 7.0.3.02400, 7.0.3.02500

Fixed versions: No known fixed versions

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VMware vCenter - Defect ID: 5206377c6ed0

Mellanox ConnectX-4 or ConnectX-5 native ESXi drivers might exhibit minor throughput degradation when Dynamic Receive Side Scaling (DYN_RSS) or Generic RSS (GEN_RSS) feature is turned on

VMware vCenter - Defect ID: 5206377c6ed0

Mellanox ConnectX-4 or ConnectX-5 native ESXi drivers might exhibit minor throughput degradation when Dynamic Receive Side Scaling (DYN_RSS) or Generic RSS (GEN_RSS) feature is turned on

Last updated on January 19th, 2026

BugZero Risk Score0.0 Coming soon

Bug Details

Disclaimer

Overview

Workaround

Bug URLs

Top VMware vCenter Defects

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