cisco思科怎么配置STP
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思科公司已成为公认的世界网络互联解决方案的领先厂商，该公司出产的一系列路由器更是引领世界，那么你知道cisco思科怎么配置STP吗?下面是小编整理的一些关于cisco思科怎么配置STP的相关资料，供你参考。
cisco思科配置STP的方法：
SwA(config)#spanning-tree vlan 1 root primary
SwA(config)#spanning-tree vlan 2 root primary
v配置SwB在VLAN 3和4中优先级为4096
SwB(config)#spanning-tree vlan 3 priority 4096
v配置SwA为VLAN 1和2的根网桥
SwB(config)#spanning-tree vlan 4 priority 4096
v查看配置结果
SwB# show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 24577
Address 000d.28bf.4b40
Cost 19
Port 24 (FastEthernet0/24)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 0013.6007.6a00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/22 Altn BLK 19 128.22 P2p
Fa0/23 Altn BLK 19 128.23 P2p
Fa0/24 Root FWD 19 128.24 P2p
VLAN0002
Spanning tree enabled protocol ieee
Root ID Priority 24578
Address 000d.28bf.4b40
Cost 19
Port 24 (FastEthernet0/24)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32770 (priority 32768 sys-id-ext 2)
Address 0013.6007.6a00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/22 Altn BLK 19 128.22 P2p
Fa0/23 Altn BLK 19 128.23 P2p
Fa0/24 Root FWD 19 128.24 P2p
v查看配置结果(VLAN 3 - 4)
SwA#show spanning-tree
VLAN0003
Spanning tree enabled protocol ieee
Root ID Priority 4099
Address 0013.6007.6a00
Cost 19
Port 24 (FastEthernet0/24)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32771 (priority 32768 sys-id-ext 3)
Address 000d.28bf.4b40
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/22 Altn BLK 19 128.22 P2p
Fa0/23 Altn BLK 19 128.23 P2p
Fa0/24 Root FWD 19 128.24 P2p
v配置交换机 C上连接主机的端口为速端口
SwC(config)#interface range fastEthernet 0/1 - 20
SwC(config-if-range)#spanning-tree portfast
%Warning: portfast should only be enabled on ports connected to a single
host. Connecting hubs, concentrators, switches, bridges, etc... to this
interface when portfast is enabled, can cause temporary bridging loops.
Use with CAUTION
%Portfast will be configured in 20 interfaces due to the range command
but will only have effect when the interfaces are in a non-trunking mode.
v在交换机C上配置上行速链路
SwC(config)#spanning-tree uplinkfast
v配置了上行速链路后查看生成树信息
SwC#show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 24577
Address 000d.28bf.4b40
Cost 3019
Port 23 (FastEthernet0/23)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 49153 (priority 49152 sys-id-ext 1)
Address 000d.2861.b100
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Uplinkfast enabled
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/22 Altn BLK 3019 128.22 P2p
Fa0/23 Root FWD 3019 128.23 P2p