Dell Emulex Family of Adapters - Manual (Page 628)

Emulex Drivers for Windows User Manual P010077-01A Rev. A
3. Configuration
NIC Driver Configuration
628
Configuring NVGRE for the OCe14000-series Adapters
Network virtualization using NVGRE is a network virtualization method that uses
encapsulation and tunneling to create large numbers of VLANs for subnets that can
extend across dispersed data centers and layer 2 (the data link layer) and layer 3 (the
network layer). The purpose is to enable multi-tenant and load-balanced networks that
can be shared across on-premises and cloud environments.
NVGRE was designed to solve issues caused by the limited number of VLANs that the
IEEE 802.1Q specification enables, which are inadequate for complex virtualized
environments, and make it difficult to stretch network segments over the long distances
required for dispersed data centers.
Setup
Prerequisites
Hardware Resources:

Two host servers

Virtual Machines (two per Hyper-V host recommended)

One 10GbE or 40GbE Ethernet Switch

Two OCe14000-series adapters (1 per host server)
Software Resources:

Windows Server 2012 with Hyper-V

Windows Server 2012 on the Virtual Machines

Add and Remove PowerShell Policy Scripts for each host server
1. On the Hyper-V hosts and peer, change the execution policy to allow PowerShell
scripts to run:

Set-Execution Policy unrestricted –Force

Run HostRegedit (run this once on the Hyper-V host only). This sets the registry
key to use VMQs and allows remote PowerShell scripts to be run on the host.
2. Set up non-blank administrator passwords on the peer to run remote PowerShell
scripts.
3. Copy the NIC driver to C:\driver on the Hyper-V Hosts.
Configuration
Creating a VM
1. Use a 10Gb disk image size and 1GB RAM.
2. Install Windows
Server 2012 RTM.
3. Turn off automatic administrator login by using “control userpasswords2”.
4. Turn off the Windows Firewall.
5. Create a vswitch for NVGRE (for example, vport0).
6. Create a vswitch for non-NVGRE (normal traffic).