1、 interface Spanning Tree interface status and configuration mst Multiple spanning trees pathcost Show Spanning pathcost options root Status and configuration of the root bridge summary Summary of port states uplinkfast Show spanning tree uplinkfast status vlan VLAN Switch Spanning Trees | Output mod
2、ifiers 1.1 zhuyu7-1#show spanning-tree vlan 7 /显示关于vlan7的stp active信息VLAN0007 Spanning tree enabled protocol ieee Root ID Priority 32775 Address 0011.5c2f.ad40 Cost 4 Port 23 （GigabitEthernet0/23） Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32775 （priority 32768 sys-id-ex
3、t 7） Address 58bc.27e5.b380 Aging Time 300Interface Role Sts Cost Prio.Nbr Type- - - - - -Gi0/1 Desg FWD 19 128.1 P2p Edge Gi0/2 Desg FWD 19 128.2 P2p Edge Gi0/3 Desg FWD 4 128.3 P2p Edge Gi0/4 Desg FWD 19 128.4 P2p Edge Gi0/7 Desg FWD 4 128.7 P2p Edge Gi0/15 Desg FWD 4 128.15 P2p Edge Gi0/17 Desg F
4、WD 100 128.17 P2p Edge Gi0/23 Root FWD 4 128.23 P2p Gi0/24 Altn BLK 4 128.24 P2p 1.2 zhuyu7-1#show spanning-tree active VLAN0001 Root ID Priority 32769 Port 23 （GigabitEthernet0/23）（根端口） Bridge ID Priority 32769 （priority 32768 sys-id-ext 1）/一般情况下，sys-id-ext都和vlan id相同/端口状态Gi0/23 Root FWD 4 128.23 P
5、2p（连接类型，点对点，这样的可以快速收敛） VLAN0002 Root ID Priority 32770 Bridge ID Priority 32770 （priority 32768 sys-id-ext 2）VLAN0005 Root ID Priority 32773 Bridge ID Priority 32773 （priority 32768 sys-id-ext 5）/注意，由于这里显示的是spanning tree的active状态，所以，这里显示的只有up状态的端口的spanning tree状态Gi0/1 Desg FWD 19 128.1 P2p Edge /边缘端
6、口VLAN0008 Root ID Priority 32776 Bridge ID Priority 32776 （priority 32768 sys-id-ext 8）VLAN0050 Root ID Priority 32818 Bridge ID Priority 32818 （priority 32768 sys-id-ext 50）1.3 zhuyu7-1#show spanning-tree /这个命令和show spanning-tree active命令输出是相同的，所以建议用这个命令，更简单 Bridge ID Priority 32769 （priority 32768
7、 sys-id-ext 1）1.4 zhuyu7-1#show spanning-tree backbonefast /Show spanning tree backbonefast statusBackboneFast is disabled1.5 zhuyu7-1#show spanning-tree blockedports /显示阻塞的端口Name Blocked Interfaces List- -VLAN0001 Gi0/24VLAN0002 Gi0/24VLAN0005 Gi0/24VLAN0006 Gi0/24VLAN0007 Gi0/24VLAN0008 Gi0/24VLAN
8、0009 Gi0/24VLAN0050 Gi0/24Number of blocked ports （segments） in the system : 8（共8个vlan）1.6 zhuyu7-1#show spanning-tree bridge /显示这个网桥在各个vlan中的bridge ID Hello Max FwdVlan Bridge ID Time Age Dly Protocol- - - - - -VLAN0001 32769 （32768, 1） 58bc.27e5.b380 2 20 15 ieee VLAN0002 32770 （32768, 2） 58bc.27e5.b380 2 20 15 ieee VLAN0005 32773 （32768, 5） 58bc.27e5.b380 2 20
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