Windows Server 2012 R2 VPN Interoperability with Cisco ASA

The IKEv2 implementation difference between Windows RRAS Gateway and Cisco ASA results in the non-interoperability between the two VPN devices (documented in this VPN Interoperability guide). This interoperability is affecting a number of customers as Cisco ASA has a large user base. However, Cisco ASA being an End-Of-Line product, the OS update for these devices… Read more

Setting up Port Mirroring to Capture Mirrored Traffic on a Hyper-V Virtual Machine

Applies To: Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Nano Server. Hi folks Gopal here again from the Microsoft Networking Escalation team.  The article below provides steps on how a Hyper-V virtual machine running on Windows Server 2012/2012 R2 can be used to capture mirrored traffic that is hitting the Hyper-V host. … Read more

Changes to Disable Security Center Notifications in Windows 10

Hello Networking blog readers! Adam here with a quick blog to discuss changes to the Security Center Notifications registry keys. Before Windows 10, users could configure the following registry keys that would suppress the balloon notifications from Security Center indicating that AntiVirus, Firewall or Updates have been disabled.   Location Setting Name Default Value Possible… Read more

Name Resolution Performance of a Recursive Windows DNS Server 2012 R2

In a previous article we talked about the name resolution performance of a Windows DNS server when deployed as an authoritative DNS server. This article details the name resolution performance of the windows DNS Server 2012 R2, when deployed as a recursive resolver. Test Setup and Methodology The test setup constitutes of a DNS client… Read more

Adjusting the Network Protocol Bindings in Windows 10

Hello, In today’s blog, we would like to bring to your attention, a new change in how Windows 10 handles network protocol bindings. In Windows 8.1 and previous operating systems, you could change the order of network protocol bindings by using below steps: Open Network Connections from the Control Panel. In the search box, type… Read more

Name Resolution Performance of Authoritative Windows DNS Server 2012 R2

This article updates the previous benchmark for name resolution performance on windows server 2012 R2 published here. It details the name resolution performance of the windows DNS Server 2012 R2, when deployed in a strictly authoritative mode on which recursion has been disabled and root hints have been removed. The new benchmarks have been recorded with Dnsperf tool, which… Read more

Receive Side Scaling for the File Servers

Hello everyone, Hubert here from the Microsoft Networking Escalation team. In the cause of investigating performance problems on file- as well as on DFS-Servers we often discover that Receive Side Scaling (RSS) is disabled. Therefore I want to give some information what RSS is about and why it plays such a vital role for fileservers… Read more

KB: Troubleshooting and data collection in Windows Server 2012 R2 Hyper-V Network Virtualization (HNV) environments

In Windows Server 2012 R2 and Microsoft System Center 2012 R2 Virtual Machine Manager (SC 2012 R2 VMM), Microsoft provides an end-to-end network virtualization solution. The following four major components make up the Microsoft network virtualization solution: Windows Azure Pack (WAP) for Windows Server provides a tenant-facing portal to create virtual networks. System Center 2012… Read more

Traffic Management with DNS Policies in Primary-Secondary Deployment

In the last few blogs we have seen how Windows DNS server policies can be used to achieve traffic management, application load balancing, deploying split-brain DNS, creating DNS filters etc. These blogs talked about configuring policies on the primary DNS server. But in the internet infrastructure the DNS servers are widely deployed in primary-secondary model,… Read more

DNS Server Startup Time Improvements in Windows Server 2012 R2

Issue Summary With the advent of cloud computing, there are more apps, more domains and more web services than ever. Every business needs its footprint on the world wide web. This led to a burst in the number of file backed zones being hosted on a single DNS server. In such a scenario, our tests… Read more