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Networking Blog

The Official Blog Site of the Windows Core Networking Team at Microsoft

  • 64 Blog Articles
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2,578

Troubleshooting Switch Misconfiguration

Dan Cuomo on 03-19-2021 01:46 PM
It can be difficult to determine if you host can't communicate because of a host or physical network configuration. The ...
1,072

Azure Kubernetes Service on Azure Stack HCI Parity with AKS PowerShell

jessicaguan on 03-03-2021 09:00 AM
Azure Kubernetes Service on Azure Stack HCI's most recent release with PowerShell updates to align more with Azure Kuber...
1,233

Quick Tip: Does my NIC support VMMQ?

Dan Cuomo on 02-22-2021 11:49 AM
This article gives a brief overview of VMMQ and provides a pointer on how to quickly identify if your adapters support t...
39K

Calico for Windows goes Open Source

mkostersitz on 09-22-2020 07:08 AM
Over the last couple of years Microsoft and Tigera have been working together to close some significant gaps in the Wind...
53.5K

Windows Server Insiders getting gRPC support in Http.sys

tojens on 07-22-2020 06:00 AM
Announcing new Http.sys features to support gRPC 
13K

Pointer: Domain Time Synchronization in the Age of Working from Home

Dan Cuomo on 06-05-2020 09:04 AM
Working from home has presented challenges in many areas and it is true for time synchronization on computers used at ho...
84.1K

Introducing Packet Monitor

george-guirguis on 05-22-2020 06:00 AM
Packet Monitor is an in-box cross-component network diagnostics tool for Windows.
129K

Windows Insiders can now test DNS over HTTPS

tojens on 05-13-2020 10:00 AM
This post will explain how to use DoH as a Windows Insider
43.2K

MsQuic is Open Source

Daniel Havey on 04-28-2020 03:49 PM
Microsoft is open sourcing our QUIC library, MsQuic, on GitHub under an MIT license. MsQuic is a cross-platform, general...
24.4K

Introducing SDNSecurityToolkit

tojens on 04-01-2020 06:00 AM
A new tool for analyzing vulnerabilities in SDN deployments
51.5K

L2bridge Container Networking

David Schott on 03-05-2020 06:00 AM
L2bridge networking is widely used in software-defined data centers thanks to its high configurability, performance, rel...
57K

Teaming in Azure Stack HCI

Dan Cuomo on 02-03-2020 06:00 AM
Windows Server currently has two inbox teaming mechanisms with two very different purposes. In this article, we’ll descr...
135K

Windows will improve user privacy with DNS over HTTPS

tojens on 11-17-2019 09:00 PM
Announcing and explaining our intention to support DNS over HTTPS in future versions of Windows
37.6K

Windows Containers and Rancher 2.3

mkostersitz on 10-08-2019 09:05 AM
Container technology is transforming the face of business and application development. 70% of on-premises workloads toda...
30.7K

Disabling Legacy TLS

Gabriel Montenegro on 10-02-2019 06:00 AM
Please read our blog on new capabilities in Windows Server 2019 to enforce improved security on connections.
30.5K

Evolution of Timekeeping in Windows

tojens on 08-05-2019 06:00 AM
A document providing an overview of the time keeping improvements in Windows.
39.2K

Direct Server Return (DSR) in a nutshell

mkostersitz on 06-19-2019 06:00 AM
TL;DR; A question we get asked quite a bit is: "What is Microsoft doing to improve Networking performance?" To answer th...
32K

Synthetic Accelerations in a Nutshell – Windows Server 2019

Dan Cuomo on 05-29-2019 06:00 AM
This is the final post covering synthetic accelerations covering Windows Server 2012, 2012 R2, 2016, and 2019. We recomm...
19.1K

DPDK releases v19.05, introduces Windows Support!

Harini Ramakrishnan on 05-22-2019 11:02 AM
Windows support for DPDK merges into the community maintained repository with v19.05 release!
24K

Troubleshooting Kubernetes Networking on Windows: Part 1

David Schott on 05-15-2019 06:00 AM
Kubernetes is not easy to troubleshoot – even if you’re an expert. There are multiple components involved in the creatio...
19.7K

Synthetic Accelerations in a Nutshell – Windows Server 2016

Dan Cuomo on 05-08-2019 06:00 AM
This is the third in a series of posts covering synthetic accelerations covering Windows Server 2012, 2012 R2, 2016, and...
9,409

Synthetic Accelerations in a Nutshell - Windows Server 2012 R2

Dan Cuomo on 04-24-2019 06:00 AM
This is the second in a series of posts covering synthetic accelerations (specifically VMQ) on 2012, 2012 R2, 2016, and ...
14K

Synthetic Accelerations in a Nutshell – Windows Server 2012

Dan Cuomo on 04-17-2019 06:00 AM
This is the first in a series of posts covering synthetic accelerations (specifically VMQ) on 2012, 2012 R2, 2016, and 2...
11.8K

How NOT to test the Windows Time Service

Dan Cuomo on 04-10-2019 06:00 AM
Primer on how to prevent bad testing methodologies from affecting your time accuracy
23.1K

Windows Subsystem for Linux for testing Windows 10 PTP Client

Dan Cuomo on 04-03-2019 06:00 AM
In this article, we show a simple setup (video and written instructions) for testing the new Precision Time Protocol (PT...
14.4K

Introducing: Kubernetes Overlay Networking for Windows

David Schott on 03-27-2019 04:28 PM
Enhanced support for network topologies, network isolation, and scalability for containers via overlay networking!
8,546

S2D Networking Best Practices @ MVP Days

Dan Cuomo on 02-20-2019 02:22 PM
Recently we spoke at Storage Spaces Direct MVPDays about networking best practices. Check here for the link!
11.1K

We've moved!

Dan Cuomo on 02-19-2019 09:52 AM
This is the new home of the Microsoft Windows Core Networking team blog! Follow us on Twitter at our team handle: @Micro...

Latest Comments

Aayoosh
in Synthetic Accelerations in a Nutshell – Windows Server 2016 on 04-07-2021
Hi Dan,I have noticed that SET switch is not vert smart when it is used for Mgmt. Networks on Hyper-V host in terms of NIC failover. I have configured SET Team with 2 members with Hyper-V Port (used dynamic as well) and if we disable one of the NICs, it experiences 7-9 RTOs to resume the connection....
0 Likes
Reza_Ameri
in Troubleshooting Switch Misconfiguration on 04-05-2021
Welcome @Dan Cuomo , I also find it funny that most problems will arise when we (IT Professionals) want to wrap up our works. I regularly use tools and scripting to automate processes.
0 Likes
Dan Cuomo
in Troubleshooting Switch Misconfiguration on 04-05-2021
Thanks @Reza_Ameri - Appreciate the feedback.
1 Likes
Reza_Ameri
in Troubleshooting Switch Misconfiguration on 03-20-2021
Thank you for these valuable insight and sharing this like. However honestly performing these tasks and troubleshooting would normally cause the IT Administrator to stay up to 8:00 PM on Friday because from experience you find one issue and then there is another issue and so on. But the good news is...
1 Likes
Ralph77
in TCP Templates for Windows Server 2019 – How to tune your Windows Server Transports (Advanced users only 😉) on 02-18-2021
HiI have a strange problem. An incomming on port 80 connection from the intrernet is assigned to the "DatacenteCostum" TCPIP template. The connections comming in on Port 443 from the same outside address are assigned to the correct template (TCPIP Setting) "Internet" .I do also not find information ...
0 Likes