http://social.technet.microsoft.com/wiki/contents/articles/11524.windows-server-2012-hyper-v-network-virtualization-survival-guide.aspx

http://channel9.msdn.com/Events/TechEd/NorthAmerica/2012/VIR303

http://technet.microsoft.com/en-us/library/jj134230

• Hyper-V Network Virtualization provides “virtual networks” to virtual machines similar to how server virtualization (hypervisor) provides “virtual machines” to the operating system.
• Network virtualization decouples virtual networks from the physical network infrastructure and removes the constraints of VLAN and hierarchical IP address assignment from virtual machine provisioning.
• For workload owners, the key benefit is that they can now move their workload “topologies” to the cloud without changing their IP addresses or re-writing their applications.
• For infrastructure owners, the additional flexibility in virtual machine placement makes it possible to move workloads anywhere in the datacenters without changing the virtual machines or reconfiguring the networks. For example Hyper-V Network Virtualization enables cross subnet live migration so that a virtual machine can live migrate anywhere in the datacenter without a service disruption.

• Windows Server 2012 has vendor-agnostic NIC teaming
• LBFO - Load Balance Fail Over
• Switch-dependent mode
• Switch-independent mode
• Active/active
• Active/standby

• Minimum - Floor
• Maximum - Cap

• Up to 8 classes
• Storage traffic separate

• SR-IOV
• Near-native network performance
• Chipset, NIC and BIOS support required
• Bypasses virtual switch and ACLs
• Can be teamed in Windows 8 and Server 2012 for maximum performance and reliability
• Can live migrate to host without SR-IOV

• Always enable VMQ
• Improves performance
• Balances interrupts

• DCTCP
• Manages congestion
• Lower latency
• Higher throughput
• Requires ECN capable switches (RFC 3168)
  • Explicit Congestion Notification

• Site-to-site connectivity
• Remote access gateway connectivity
• Uses IPsec (VPN)

• Charge-back
• Configuration and usage data preserved across live migration

• Discover service
  • DC, DNS, DHCP
• Organize, assign, monitor and manage IP addresses
• Port mirroring
  • Traffic analysis