From the course: Windows Server 2019: Advanced Networking Features

Introducing new advanced networking features - Windows Server Tutorial

From the course: Windows Server 2019: Advanced Networking Features

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Introducing new advanced networking features

- There are lots of new advanced networking features in Windows Server 2019. Receive Side Coalescing works with the virtual switch and is software only. The basic technique is combining TCP segments into larger segments for each virtual machine. This feature's on by default in Windows Server 2019 and it allows for a large virtual machine queue. And this is the efficient transfer of network traffic to a virtualized host operating system. When compared to 2016, it uses much less CPU utilization. Dynamic VMMQ in Windows Server 2019 automatically tunes hosts and uses a single core when network throughput is low and then it expands to other cores when needed. Note that you do need updated drivers for your network interface cards for this to work properly. Software Defined Networking has been a part of Windows Server ever since 2012. In 2016 Microsoft switched to the Virtual Extensible LAN protocol, VXLAN, and removed the dependency on System Center Virtual Machine Manager. Although deployment can be difficult, Microsoft has added a new tool, the Windows Admin Center, and it has support for managing software defined networking, deployed on Windows Server 2019. They've also improved the free SDN or Software Defined Networking Express tools for both 2016 and 2019 with more validation for inputs and a user interface to configure the required settings. Firewall logging, which is consistent with Azure network logs, is new and you can enable it on a per-rule basis, and you can start locally in a comma-separated values or CSV file or a Server Message Block or SMB share. Each host will generate its own files and start a new file every hour. You can connect virtual networks together with virtual network peering. These virtual networks can be in the same region or different regions. Once the virtual networks are peered, resources in both virtual networks are able to communicate with each other with the same latency and bandwidth as if the resources were in the same virtual network. Finally, the SDN stack has an application programming interface so independent software vendors can build their own management technologies on top of it. The first company to have done so is Five9 and their cloud manager can deploy and manage SDN networks. Encryption for traffic on virtual nets is now easy to configure. It uses Transport Layer Security, and once you've set up the required certificates, it's just a click to turn it on for all traffic. This is independent of the applications in the virtual machines on that network. All traffic is TLS protected. The SDN gateway in 2016 had some serious limitations on performance, such as up to 300 Mbps for a single IPSec tunnel. 2019 ups that limit to about 1.8 Gbps. There are lots of great new advanced networking features in Server 2019. Some are related to virtual machines and networks, while others affect physical servers and switches.

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