数据中心增强以太网技术白皮书
目录
1 背景 .......................................................................................................................................................... 1
1.2 数据中心 I/O 整合的出现 ............................................................................................................. 1
1.3 增强以太网的提出......................................................................................................................... 4
1.4 增强以太网简介 ............................................................................................................................ 4
2 FCoE 融合网络概述.................................................................................................................................. 7
2.1 概念 ............................................................................................................................................... 7
2.2 FCoE 的提出.................................................................................................................................. 8
2.3 FCoE 介绍 ................................................................................................................................... 10
2.4 好处 ............................................................................................................................................. 12
2.5 应用方式...................................................................................................................................... 15
2.6 与 iSCSI 的区别 ........................................................................................................................... 19
3 PFC 基于优先级的流量控制................................................................................................................... 20
3.1 概述 ............................................................................................................................................. 20
3.2 交互流程...................................................................................................................................... 21
3.3 比传统以太网流控的优势 ........................................................................................................... 22
4 ETS 增强传输选择.................................................................................................................................. 23
4.1 概述 ............................................................................................................................................. 23
4.2 ETS 算法举例 .............................................................................................................................. 24
4.3 比传统以太网队列调度的优势 .................................................................................................... 26
4.4 典型应用描述 .............................................................................................................................. 26
5 数据中心桥接交换协议 DCBX ............................................................................................................... 28
5.1 概述 ............................................................................................................................................. 28
5.2 与 LLDP 的关系 .......................................................................................................................... 30
5.3 优势 ............................................................................................................................................. 30
5.4 典型应用描述 .............................................................................................................................. 30
6 拥塞通告 ................................................................................................................................................. 32
6.1 概述 ............................................................................................................................................. 32
6.2 处理原理-CN-TAG ...................................................................................................................... 32
6.3 结合 PFC 使用 ............................................................................................................................. 32
7 总结 ........................................................................................................................................................ 34
