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Best Practices for Virtualizing and Managing Exchange 2013

Best Practices and Recommendations

We recommend that you use host-level NIC Teaming to increase resiliency and bandwidth. NIC

Teaming supports up to 32 NICs from mixed vendors. It is important to have NICs within a team

with the same speed.

Hyper-V Extensible Switch

Shown in Figure 19, the Hyper-V Extensible Switch is a layer-2 virtual interface that provides

programmatically managed and extensible capabilities to connect virtual machines to the physical

network.

With its new features and enhanced capabilities, the Hyper-V Extensible Switch supports tenant

isolation, traffic shaping, protection against virtual machines infected with malicious code, and simplified

troubleshooting. With built-in support for Network Device Interface Specification (NDIS) filter drivers and

Windows Filtering Platform (WFP) callout drivers, the Hyper-V Extensible Switch also enables independent

software vendors (ISVs) to create extensible plug-ins (known as Virtual Switch Extensions) that can provide

enhanced networking and security capabilities.

Figure 19: Hyper-V Extensible Switch

The two public Windows platforms for extending Windows networking functionality are used as follows:

 NDIS filter drivers: Used to monitor or modify network packets in Windows.

 WFP callout drivers: Used to allow ISVs to create drivers to filter and modify TCP/IP packets,

monitor or authorize connections, filter IPsec-protected traffic, and filter RPCs. Filtering and

modifying TCP/IP packets provides unprecedented access to the TCP/IP packet processing path.

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