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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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DCB Overview

DCB Overview

DCB is used to build lossless Ethernet, meeting QoS requirements on a converged data center network.

On a converged data center 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: 2019-08-09

Document ID: EDOC1000041694

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