HCIBox - High MTU (9014) causes network congestion on nested VMs when using Windows Server 20348.2340.240303 or later

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HCIBox - High MTU (9014) causes network congestion on nested VMs when using Windows Server 20348.2340.240303 or later #2579

Closed dkirby-ms closed 3 months ago

dkirby-ms commented 3 months ago

We currently have a pindown to avoid this. Removing the code that adjusts the vnics to use a large MTU resolves the problem.

Azure Stack HCI docs indicate MTU should be 1514-9174 for SDN. https://learn.microsoft.com/en-us/azure-stack/hci/concepts/physical-network-requirements?tabs=overview%2C23H2reqs. We can reintroduce the MTU setting when SDN is added to HCIBox.

Related to #2462

microsoft-github-policy-service[bot] commented 3 months ago

Hi dkirby-ms! Thank you for opening this issue. We appreciate your contribution and welcome you to our community! We are glad to have you here and to have your input on the Azure Arc Jumpstart.