User Manual

Rev 4.70

Mellanox Technologies

8.8.3 Verifying the Encapsulation of the Traffic

Once the configuration using PowerShell is completed, verifying that packets are indeed encap-

sulated as configured is possible through any packet capturing utility. If configured correctly, an

encapsulated packet should appear as a packet consisting of the following headers:

Outer ETH Header, Outer IP, GRE Header, Inner ETH Header, Original Ethernet Payload.

8.8.4 Removing NVGRE configuration

Step 1. Set VSID back to 0 (on each Hyper-V for each Virtual Machine where VSID was set)

• VMName - the name of Virtual machine

• VMMacAddress - the MAC address of VM's network interface associated with

vSwitch that was connected to Mellanox device.

Step 2. Remove all lookup records (same command on all Hyper-V hosts)

Remove- NetVirtualizationLookupRecord

Step 3. Remove customer route (same command on all Hyper-V hosts)

Remove- NetVirtualizationCustomerRoute

Step 4. Remove Provider address (same command on all Hyper-V hosts)

Remove-NetVirtualizationProviderAddress

Step 5. For HyperV running Windows 2012 only disable network adapter binding to ms_netwnv ser-

vice

<EthInterfaceName> - Physical NIC name

8.9 Differentiated Services Code Point (DSCP)

DSCP is a mechanism used for classifying network traffic on IP networks. It uses the 6-bit Dif-

ferentiated Services Field (DS or DSCP field) in the IP header for packet classification purposes.

Using Layer 3 classification enables you to maintain the same classification semantics beyond

local network, across routers.

Every transmitted packet holds the information allowing network devices to map the packet to

the appropriate 802.1Qbb CoS. For DSCP based PFC the packet is marked with a DSCP value in

the Differentiated Services (DS) field of the IP header.

Please repeat steps 5 to 8 on each Hyper-V after rebooting the Hypervisor.

#Get-VMNetworkAdapter <VMName>(a) | where {$_.MacAddress -eq <VMMacAddress>(b)} | Set-VMNetwork-

Adapter -VirtualSubnetID 0

Disable-NetAdapterBinding <EthInterfaceName>(a) -ComponentID ms_netwnv