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MSTP技术白皮书 H3C认证交换技术学习之 MSTP 官方文档详解 |
MSTP技术白皮书 H3C认证交换技术学习之 MSTP 官方文档详解 目 录 1 概述......................................................................................................................................3 1.1 产生背景......................................................................................................................3 1.1.1 IEEE 802.1D STP..............................................................................................3 1.1.2 IEEE 802.1w RSTP ...........................................................................................4 1.2 MSTP技术优点............................................................................................................5 2 MSTP详细介绍......................................................................................................................5 2.1 相关术语......................................................................................................................5 2.2 MSTP算法实现............................................................................................................9 2.2.1 初始状态............................................................................................................9 2.2.2 端口角色的选择原则..........................................................................................9 2.2.3 优先级向量计算...............................................................................................10 2.2.4 角色选择过程...................................................................................................12 2.2.5 计算结果..........................................................................................................14 3 Comware实现的技术特色....................................................................................................15 3.1 MSTP的三种工作模式...............................................................................................15 3.2 Path Cost缺省值的计算.............................................................................................16 3.3 设置超时因子特性......................................................................................................16 3.4 指定根桥和备份根桥..................................................................................................17 3.5 BPDU保护.................................................................................................................17 3.6 Root保护....................................................................................................................17 3.7 Loop保护...................................................................................................................18 3.8 TC保护.......................................................................................................................19 3.9 配置摘要侦听.............................................................................................................19 3.10 No Agreement Check特性实现................................................................................21 3.11 MSTP标准报文格式特性实现...................................................................................22 3.12 VLAN Ignore特性.....................................................................................................22 4 典型组网案例.......................................................................................................................22 5 总结....................................................................................................................................23 6 参考文献..............................................................................................................................23
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