STP技术实验配置(超详细-原创).doc

STP技术 实验目的: 熟悉掌握STP配置, 掌握STP原理及选举过程设备说明: 使用小凡模拟器3640实验拓扑: 实验步骤: 基础配置:(1)把所有线路down掉 sw1(config)#int f0/1 /把SW1的f0/1端口down sw1(config-if)#shutdownsw1(config)#int f0/2 /把SW1的f02端口downsw1(config-if)#shutdownsw2(config)#int f0/1 /把SW2的f0/1端口downsw2(config-if)#shutdown (2)在sw1,sw2,sw3 都分别创建 vlan 10, vlan 20sw1#vlan database / 在sw1分别创建vlan 10 vlan 20sw1(vlan)#vlan 10sw1(vlan)#vlan 20 Sw2#vlan database / 在sw2分别创建vlan 10 vlan 20sw2(vlan)#vlan 10sw2(vlan)#vlan 20 Sw3#vlan database / 在sw3分别创建vlan 10 vlan 20Sw3(vlan)#vlan 10Sw3(vlan)#vlan 20 (3) 把sw1,sw2,sw3 的f0/1,f0/2接口划入vlan 10 sw1(config)#int f0/1 sw1(config-if)#switchport access vlan 10 /把f0/1划属于vlan 10sw1(config-if)#int f0/2sw1(config-if)#switchport access vlan 10 /把f0/2划属于vlan 10 sw2(config)#int f0/1 sw2(config-if)#switchport access vlan 10 /把f0/1划属于vlan 10sw2(config-if)#int f0/2sw2(config-if)#switchport access vlan 10 /把f0/2划属于vlan 10 sw3(config)#int f0/1 sw3(config-if)#switchport access vlan 10 /把f0/1划属于vlan 10sw3(config-if)#int f0/2sw3(config-if)#switchport access vlan 10 /把f0/2划属于vlan 10 (3)查看配置信息 Sw1sw1#show running-configBuilding configuration.Current configuration : 945 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname sw1!boot-start-markerboot-end-marker!no aaa new-modelmemory-size iomem 5!ip cefno ip domain lookup! !interface FastEthernet0/0!interface FastEthernet0/1 switchport access vlan 10 shutdown /f0/1,f0/2接口属于vlan 10 并且为down 状态!interface FastEthernet0/2 switchport access vlan 10 shutdown !interface FastEthernet0/3!interface FastEthernet0/4!interface FastEthernet0/5!interface FastEthernet0/6!interface FastEthernet0/7!interface FastEthernet0/8!interface FastEthernet0/9!interface FastEthernet0/10!interface FastEthernet0/11!interface FastEthernet0/12!interface FastEthernet0/13! interface FastEthernet0/14!interface FastEthernet0/15!interface Vlan1 no ip address!ip http server!control-plane! !line con 0line aux 0line vty 0 4!end sw2 sw2#show running-configBuilding configuration.Current configuration : 945 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname sw2!boot-start-markerboot-end-marker!no aaa new-modelmemory-size iomem 5!ip cefno ip domain lookup! !interface FastEthernet0/0!interface FastEthernet0/1 switchport access vlan 10 shutdown /f0/1,f0/2接口属于vlan 10 并且为down 状态!interface FastEthernet0/2 switchport access vlan 10 shutdown !interface FastEthernet0/3!interface FastEthernet0/4!interface FastEthernet0/5!interface FastEthernet0/6!interface FastEthernet0/7!interface FastEthernet0/8!interface FastEthernet0/9!interface FastEthernet0/10!interface FastEthernet0/11!interface FastEthernet0/12!interface FastEthernet0/13! interface FastEthernet0/14!interface FastEthernet0/15!interface Vlan1 no ip address!ip http server!control-plane! !line con 0line aux 0line vty 0 4!endsw3sw3#show running-configBuilding configuration.Current configuration : 945 bytes!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname sw3!boot-start-markerboot-end-marker!no aaa new-modelmemory-size iomem 5!ip cefno ip domain lookup! !interface FastEthernet0/0!interface FastEthernet0/1 switchport access vlan 10 shutdown /f0/1,f0/2接口属于vlan 10 并且为down 状态!interface FastEthernet0/2 switchport access vlan 10 shutdown !interface FastEthernet0/3!interface FastEthernet0/4!interface FastEthernet0/5!interface FastEthernet0/6!interface FastEthernet0/7!interface FastEthernet0/8!interface FastEthernet0/9!interface FastEthernet0/10!interface FastEthernet0/11!interface FastEthernet0/12!interface FastEthernet0/13! interface FastEthernet0/14!interface FastEthernet0/15!interface Vlan1 no ip address!ip http server!control-plane! !line con 0line aux 0line vty 0 4!end实验调试: (1) 将sw1,sw2,sw3的f0/1 ,f0/2,f0/3接口打口 sw1(config)#int f0/1sw1(config-if)#no shsw1(config-if)#int f0/2sw1(config-if)#no shsw2(config)#int f0/1sw2(config-if)#no shsw2(config-if)#int f0/2sw2(config-if)#no sh sw3(config)#int f0/1sw3(config-if)#no shsw3(config-if)#int f0/2sw3(config-if)#no sh (2)在sw1,sw2,sw3 spanging-tree vlan 10 Sw1:sw1#show spanning-tree briefVLAN10 Spanning tree enabled protocol ieee Root ID Priority 32768 /根网桥ID 优先极为32768 默认值 Address cc00.0bd8.0000 /MAC地址 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32768 /网桥ID优先极为默认32768值 Address cc00.0bd8.0000 /mac值与根网桥一样,证明SW1为根网桥 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec /hello时间为2秒 /老化时间为20秒 转发延时为15秒 Aging Time 300Interface DesignatedName Port ID Prio Cost Sts Cost Bridge ID Port ID- - - - - - - -FastEthernet0/1 128.2 128 19 FWD 0 32768 cc00.0bd8.0000 128.2 FastEthernet0/2 128.3 128 19 FWD 0 32768 cc00.0bd8.0000 128.3 /端口优先极 /默认优先极 /cost 值为19 端口ID值sw2#show spanning-tree vlan 10 VLAN10 Spanning tree enabled protocol ieee Root ID Priority 32768 Address cc00.0bd8.0000 Cost 19 Port 2 (FastEthernet0/1) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32768 Address cc00.0c40.0000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300Interface DesignatedName Port ID Prio Cost Sts Cost Bridge ID Port ID- - - - - - - -FastEthernet0/1 128.2 128 19 FWD 0 32768 cc00.0bd8.0000 128.2 FastEthernet0/2 128.3 128 19 FWD 19 32768 cc00.0c40.0000 128.3 sw3#show spanning-tree vlan 10 briefVLAN10 Spanning tree enabled protocol ieee Root ID Priority 32768 Address cc00.0bd8.0000 Cost 19 Port 3 (FastEthernet0/2) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32768 Address cc00.0c88.0000 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300Interface DesignatedName Port ID Prio Cost Sts Cost Bridge ID Port ID- - - - - - - -FastEthernet0/1 128.2 128 19 BLK 19 32768 cc00.0c40.0000 128.3 FastEthernet0/2 128.3 128 19 FWD 0 32768 cc00.0bd8.0000 128.3 sw3#show spanning-tree int f0/1 Port 2 (FastEthernet0/1) of VLAN10 is blocking /端口阻塞 Port path cost 19, Port priority 128, Port Identifier 128.2. Designated root has priority 32768, address cc00.0bd8.0000 Designated bridge has priority 32768, address cc00.0c40.0000 Designated port id is 128.3, designated path cost 19 Timers: message age 3, forward delay 0, hold 0 Number of transitions to forwarding state: 0 BPDU: sent 0