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Configuring Data Center
Bridging
This chapter provides the following information about data center bridging (DCB):
“DCB in Windows Server 2012” on page 197
Overview
DCB is a collection of IEEE specified standard extensions to Ethernet to provide
lossless data delivery, low latency, and standards-based bandwidth sharing of
data center physical links. DCB supports storage, management, computing, and
communications fabrics onto a single physical fabric that is simpler to deploy,
upgrade, and maintain than in standard Ethernet networks. DCB has a
standards-based bandwidth sharing at its core, allowing multiple fabrics to coexist
on the same physical fabric. The various capabilities of DCB allow for LAN traffic
(large quantity of flows and not latency-sensitive), SAN traffic (large packet sizes
and requires lossless performance), and IPC (latency-sensitive messages) to
bandwidth share the same physical converged connection and achieve the
individual traffic performance that you need.
DCB includes the following capabilities:
Enhanced Transmission Selection
Enhanced Transmission Selection
Enhanced transmission selection (ETS) provides a common management
framework for assignment of bandwidth to traffic classes. Each traffic class or
priority can be grouped in a priority group (PG), and it can be considered as a
virtual link or virtual interface queue.
