Users Guide

14–Data Center Bridging
Data Center Bridging in Windows Server 2012 and Later
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 In NIC partitioned enabled configurations, ETS (if operational) overrides the
Bandwidth Relative (minimum) Weights assigned to each function.
Transmission selection weights are per protocol per ETS settings instead.
Maximum bandwidths per function are still honored in the presence of ETS.
 In the absence of an iSCSI or FCoE application TLV advertised through the
DCBX peer, the adapter will use the settings taken from the local Admin
MIB.
Data Center Bridging in Windows Server 2012
and Later
Starting with Windows Server 2012, Microsoft introduced a new way of managing
quality of service (QoS) at the OS level. The two main aspects of Windows QoS
include:
 A vendor-independent method for managing DCB settings on NICs, both
individually and across an entire domain. The management interface is
provided by Windows PowerShell cmdlets.
 The ability to tag specific types of Layer 2 networking traffic, such as SMB
traffic, so that hardware bandwidth can be managed using ETS.
All Marvell Converged Network Adapters that support DCB are capable of
interoperating with Windows QoS.
To enable the QoS Windows feature, ensure that the Marvell device is
DCB-capable:
1. Using CCM or another management utility, enable data center bridging.
2. Using Windows Device Manager or another management utility, select the
NDIS driver, display Advanced properties, and enable the Quality of
Service property.
When QoS is enabled, administrative control over DCB-related settings is
relinquished to the operating system (that is, QCS CLI or QCC GUI can no longer
be used for administrative control of the DCB). You can use PowerShell to
configure and manage the QoS feature. Using PowerShell Cmdlets, you can
configure various QoS-related parameters, such as traffic classification, priority
flow control, and traffic class throughput scheduling. You should ensure that the
PowerShell-configured DCB settings are compatible with the attached
DCB-enabled switch.
For more information on using PowerShell Cmdlets, see the DCB Windows
PowerShell User Scripting Guide in the Microsoft Technet Library.