Windows 10: Windows Subsystem for Linux (WSL) for testing Windows 10 PTP Client

Brink · Apr 3, 2019

Hi Folks,

Program Manager Dan Cuomo here to chat about setting up one of the most important new features outlined in #10 on our Top 10 Networking features in Windows Server 2019, Precision Time Protocol (PTP).

As a quick refresher, you can visualize the benefit of PTP (IEEE 1588v2) by thinking back to the last thunderstorm you experienced. The further away you are from the lightning, the larger the audible delay in the thunder (you don’t see AND hear at the same time unless you’re very close to the lightning). This is not just the difference in speed of sound vs the speed of light, but the delay introduced by the environment such as nearby cars and buses, buildings, and many others.

In timing, latency (delay) is a killer – If you’re in the financial services, video broadcasting, gaming, or numerous other industries you’re painfully aware of this. As timing is distributed in the network, the accuracy and certainty of that measurement degrades like the sound of the lightning as you move further from the source.

PTP is a new (to Windows) time synchronization protocol that helps to remove the noise and asymmetry in the network that reduces the accuracy of a traditional time synchronization protocol.

One of the challenges customers have is setting up and testing the Windows Client as it requires a time server that can speak PTP; you cannot use an NTP server to speak to a PTP client. So, in this blog, we’ll show you how to easily setup and test PTP with a linux grandmaster – All on a single physical machine!

Disclaimer: These instructions are point-in-time; at the time of writing (3/27/19), these instructions work however future changes to the various components included here might affect your success in the future.

Video

Let me first prove this works then you can use the instructions below to try it out yourself!

[youtube]W58_JZLBbVw[/youtube]

Instructions

These instructions reference three different locations where you will need to perform an action.

Windows 10 Client: This is a Windows 10 version 1809 or later physical host system. This is the only physical system needed for this exercise.

Windows Server 2019 VM: This is a virtual machine installed on the Windows 10 Client and will be the PTPv2 (IEEE 1588v2) slave. In this example we use a Windows Server 2019 system as the PTP slave, however a Windows 10 system can also work. Creating this virtual machine is outside of the scope of these instructions.

Ubuntu on WSL: This is a Windows Store app that runs the Windows Subsystem for Linux on the Windows 10 Client and will operate as the PTP Grandmaster.

On the Windows 10 Client navigate to our GitHub Repo - In this example we will use the unicast configuration file in this repo.

Click on the unicast configuration for PTPd (last one in the list shown below)

Next, click Raw and copy the contents into notepad and save the file in your preferred location with a .conf extension. In this example, we’ve saved the file to c:\temp\PTPd\PTPdUnicast.conf. You will later access this file directly, from within the /mnt folder on the Ubuntu on WSL instance.

Important Note: Please make sure that the file has a blank line at the end of the file.

Open Hyper-V Manager on your Windows 10 Client and attach the VM to a virtual switch. In this example, we use the default switch however any virtual switch can be used so long as it is not a private virtual switch.

In Hyper-V Manager, select the virtual machine and note the assigned IP Address. If you’re not using the default virtual switch, you may need to assign one.

Open the Windows Store on the Windows 10 Client and search for Linux or Ubuntu and install the Windows Subsystem for Linux application.

Once installed, select start and launch Ubuntu.

Ubuntu on WSL

First launch will take a few minutes; please be patient.

Enter a username, then a password.

Run sudo apt-get update. This updates the packages that are on the system and will require internet access.

Run sudo apt-get install ptpd. This installs the PTP package that will operate as the PTP grandmaster.

Run ls /mnt. WSL mounts the local file system inside the Ubuntu instance. c indicates the drive letter that is shared between this WSL Linux system and your Windows 10 client.

Next, run ls /mnt/c/temp/PTPd

Run ifconfig

Identify the interface on the same subnet as your Windows Server 2019 VM.

Windows 10 Client

Modify the line ptpengine:interface = eth0 to use the interface identified in the last step.

Next modify the ptpengine:unicast_destinations value with the IP address of the Windows Server 2019 VM.

Ubuntu on WSL

Run sudo ptpd -c /mnt/c/temp/PTPd/PTPdUnicast.conf to start the PTPd grandmaster.

Next, run ps -aux | grep ptpd to identify the PID of the PTPd. If you want to restart PTPd, you use this PID to kill the process.

Windows Server 2019 VM

Modify the registry to Configure PTP. This step also disables the VMIC and NTP Client in order to guarantee we’re getting time using the correct provider.

This is the IP from Ubuntu on WSL (eth2 in the example above)

Root Key HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\PtpClient Type Name Value REG_SZ PtpMasters 172.17.75.17 REG_DWORD Enabled 1 REG_DWORD InputProvider 1 REG_SZ DllName "c:\windows\system32\ptpprov.dll" REG_DWORD DelayPollInterval 0x3e80 REG_DWORD AnnounceInterval 0x0fa0 REG_DWORD EnableMulticastRx Root Key HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient REG_DWORD Enabled Root Key HKLM\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\VMICTimeProvider REG_DWORD Enabled
Next, restart the Windows Time Service and open the PTP ports in the Windows Firewall using an elevated PowerShell prompt.
New-NetFirewallRule -DisplayName 'PTP-319' -Name 'PTP-319' -LocalPort 319 -Direction Inbound -Action Allow
New-NetFirewallRule -DisplayName 'PTP-320' -Name 'PTP-320' -LocalPort 320 -Direction Inbound -Action Allow
Install and Launch Wireshark. Start a capture and filter using the following filter: port in {319 320}

You should see Announce, Sync, and Delay_Req, Delay_Resp messages.

Note: Be patient *Smile You should see Announce and Sync messages immediately however you may need to wait a few minutes to see the Delay_Req and Delay_Resp. While you’re waiting, you can go on to the next step.

Open the Event Viewer > Applications and Services > Microsoft > Windows > Time-Service-PTP-Provider > PTP-Operational. First verify you see event 512 which will occur once announce messages are received.

Next verify that you receive event 513 which indicates that you have successfully selected the PTP Master as the source of time.

That’s it! Now that you’re system has chosen the PTP master, you’re synchronizing time. You can further verify this by running w32tm /query /status /verboseto verify that the last synchronization was successful.

If you’re trying to test out PTP, you can get your feet wet using the Windows Subsystem for Linux which is a nifty little tool that enables Linux to run natively on Windows. Obviously this approach will not yield high accuracy however if you’re looking to easily demonstrate the functionality, this might be the easiest approach for you!

Thanks for reading,
Dan Cuomo
Click to expand...

Source: Windows Subsystem for Linux for testing Windows 10 PTP Client - Microsoft Tech Community - 389181

:)

Devlin Sco · Apr 3, 2019

Windows Subsystem Linux

Hello,

We would like to know more about the issue you're experiencing with using
Windows Subsystem for Linux. Kindly answer the following questions:

Are you developing a program, an app, or a software for Linux?

Is your Window 10 PC connected to a domain?

Are you managing a Windows Server PC?

What troubleshooting steps have you tried so far?

Can you tell us the Version and OS build of your Windows 10 device? You can find this information by clicking the
Start button, type About your PC, and then press
Enter.

We need the following information in order to determine if we need to refer your concern to the
TechNet forums or the Microsoft Developer Network (MSDN) forums.

For now, we suggest reviewing these support articles to find out if there's an issue with the installation of
Windows Subsystem for Linux:

Install the Windows Subsystem for Linux

Troubleshooting Windows Subsystem for Linux

We'll be waiting for your response.

Brink · Apr 3, 2019

Using Windows Subsystem for Linux (WSL) in an Enterprise

Recently, customers in an enterprise environment have asked if there is a way to install WSL without an internet connection. These companies had some machines that would benefit from having WSL, but don't have an internet connection for security, logistics, or other reasons.

Enter: The Microsoft Store for Business

We (the WSL team) took a look into this issue and found that enterprises could use the Microsoft Store for Business to help deploy WSL distros to their company, including offline distribution! The Microsoft Store for Business is essentially another way to interact with the Microsoft Store, but from an enterprise administrator perspective. This includes tools like acquiring licenses for apps for your company, controlling which users can access which apps, and even providing a custom private company store which has a collection of apps that only your employees can view, and download.

To actually enable offline distribution, any distro owner needs to have elected to have 'offline licensing' available on their distro app. Luckily, many of our distro creators have already enabled offline licensing. At the time of writing this article this includes:

Kali Linux

Ubuntu (Including 16.04 and 18.04)

Debian

For More Information

The customers who originally asked about installing WSL in an offline mode have verified that our solution works for them! We realized that this information would be useful to all enterprise customers, so we added a new page to the WSL docs: 'Windows Subsystem for Linux for Enterprise'. This doc provides helpful resources on how to use the Microsoft Store for Business to deploy WSL to your company, as well as step by step instructions on how to acquire the offline installer for a distro of your choice.

Please take a look, and as always give us any feedback that you may have!
Click to expand...

Source: Using WSL in an Enterprise Windows Command Line Tools For Developers

VulkanBros · Apr 3, 2019

Linux (Ubuntu) in Windows 10 Anniversary Update (Microsoft in bed with enemy)

If you have Windows 10 x64 with the Anniversary Update installed, it is now possible to run Linux within a Windows prompt.

Turn on "Developer Mode"
Restart PC
In "Turn Windows features on or off" Select "Windows Subsystem for Linux"
Restart PC
In a command promt type bash

https://msdn.microsoft.com/commandline/wsl/install_guide

I find that cool .....

Windows 10: Windows Subsystem for Linux (WSL) for testing Windows 10 PTP Client

Windows Subsystem for Linux (WSL) for testing Windows 10 PTP Client

Windows Subsystem for Linux (WSL) for testing Windows 10 PTP Client

Windows Subsystem for Linux (WSL) for testing Windows 10 PTP Client

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