Slow Network Speeds using Windows VM in Kyndryl Cloud Uplift

Issue:

When using a Windows VM in Kyndryl Cloud Uplift, you may encounter much slower network speeds compared to Linux VM's (such as Ubuntu), especially when using an Azure ExpressRoute.

Scenario:

If you have a Windows VM and a Linux VM in the same environment within Kyndryl Cloud Uplift, and the Windows VM experiences much slower network performance, the issue may be related to a network adapter setting.

Resolution:

Update the following on your Windows VM:

• Setting: IPv4 TSO Offload
• Action: Set to Disabled

Steps to Configure:

1. On your Windows VM, Navigate to:
   • Start -> Control Panel -> Network and Internet -> Network and Sharing Center.
2. Click Change Adapter Settings.
3. Right click the Ethernet Adapter in use and select Properties.
4. Click Configure.
5. Go to the Advanced tab.
6. Locate the IPv4 TSO Offload and set it to Disabled.
7. Click OK to apply the changes.