04-生成树协议.pptVIP

* * * * * * * * * * * 快速生成树配置 Switch#show spanning-tree vlan 1 VLAN0001 Spanning tree enabled protocol rstp Root ID Priority 32769 Address 001f.caff.1000 Cost 19 Port 11 (FastEthernet0/9) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0021.1ba5.6980 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 Interface Role Sts Cost Prio.Nbr Type ------------------- ---- --- --------- -------- -------------------------------- Fa0/2 Desg FWD 19 128.4 P2p Fa0/9 Root FWD 19 128.11 P2p 启用了快速生成树 端口类型为P2P * 多生成树概述 多生成树 MST （Multiple Spanning Tree Protocol） IEEE 802.1s 将一个或多个VLAN映射到一个STP实例 * STP/RSTP是基于端口的，PVST/PVST＋是基于VLAN的，而MSTP就是基于实例的。 多生成树配置 启用MST模式 Switch(config)#spanning-tree mode mst 进入MST配置模式 Switch(config)#spanning-tree mst configuration 配置MST区域名 Switch(config-mst)#name name 配置区域配置修订号 Switch(config-mst)#revision version 将VLAN映射到MST实例 Switch(config-mst)#instance instance-id vlan vlan-list * 范围1-15 设置MST实例优先级 Switch(config)#spanning-tree mst instance-id priority bridge-priority Switch(config)#spanning-tree mst instance-id root { primary | secondary } 查看MST生成树 Switch#show spanning-tree Switch#show spanning-tree mst instance-id STP选择根网桥实例 Switch#show spanning-tree MST0 Spanning tree enabled protocol mstp Root ID Priority 32768 Address 001f.caff.1000 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32768 (priority 32768 sys-id-ext 0) Address 001f.caff.1000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Interface Role Sts Cost