Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

The MTU size in AKS Windows VMs is 1450 #2873

Closed
AbelHu opened this issue Mar 29, 2022 · 2 comments
Closed

The MTU size in AKS Windows VMs is 1450 #2873

AbelHu opened this issue Mar 29, 2022 · 2 comments
Assignees
@AbelHu
Labels
known-issue windows

Comments

@AbelHu
Copy link
Member

AbelHu commented Mar 29, 2022

What happened:
The MTU size in AKS Windows VMs is 1450

What you expected to happen:
The MTU size in AKS Windows VMs is 1500

How to reproduce it (as minimally and precisely as possible):
Run below command in any AKS Windows nodes.

netsh interface ipv4 show subinterfaces

Anything else we need to know?:
It is caused by microsoft/SDN#517

Environment:

  • Kubernetes version (use kubectl version): N/A
  • Size of cluster (how many worker nodes are in the cluster?) N/A
  • General description of workloads in the cluster (e.g. HTTP microservices, Java app, Ruby on Rails, machine learning, etc.)
  • Others:
@AbelHu AbelHu self-assigned this Mar 29, 2022
@ghost
Copy link

ghost commented Mar 29, 2022

@immuzz, @justindavies would you be able to assist?

Issue Details

What happened:
The MTU size in AKS Windows VMs is 1450

What you expected to happen:
The MTU size in AKS Windows VMs is 1500

How to reproduce it (as minimally and precisely as possible):
Run below command in any AKS Windows nodes.

netsh interface ipv4 show subinterfaces

Anything else we need to know?:
It is caused by microsoft/SDN#517

Environment:

  • Kubernetes version (use kubectl version): N/A
  • Size of cluster (how many worker nodes are in the cluster?) N/A
  • General description of workloads in the cluster (e.g. HTTP microservices, Java app, Ruby on Rails, machine learning, etc.)
  • Others:
Author: AbelHu
Assignees: AbelHu
Labels:

known-issue, windows
Milestone: -

@AbelHu
Copy link
Member Author

AbelHu commented Apr 14, 2022

It is by design that HNS sets the MTU from 1500 to 1450 for process-isolated containers

@AbelHu AbelHu closed this as completed Apr 14, 2022
@ghost ghost locked as resolved and limited conversation to collaborators May 14, 2022
Sign up for free to subscribe to this conversation on GitHub. Already have an account? Sign in.
Assignees

@AbelHu AbelHu

Labels
known-issue windows
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@AbelHu