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Configuration Guide - DCN and Server Management

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of Trill, FCoE, DCB, and NLB Server Cluster Association.
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Overview of DCB

Overview of DCB

Data Center Bridging (DCB) is used to build lossless Ethernet, meeting quality of service (QoS) requirements on a converged data center network.

On a converged data center network, local area network (LAN) traffic, storage area network (SAN) traffic, and inter-process communication (IPC) traffic have different QoS requirements:
  • SAN traffic is sensitive to packet loss and relies on in-order delivery, which means that packets are delivered in the same order in which they were sent.
  • LAN traffic allows packet loss and is delivered on a best-effort (BE) basis.
  • IPC traffic is exchanged between servers and requires low latency.

A converged network has high requirements for link sharing and common Ethernet cannot meet the preceding requirements.

Data Center Bridging (DCB) is a set of extensions to Ethernet for use in a data center environment, which is defined by the IEEE 802.1 working group. DCB is used to build lossless Ethernet, meeting QoS requirements on a converged data center network.

Updated: 2019-05-08

Document ID: EDOC1100004349

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