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1、實驗八生成樹配置一生成樹協(xié)議STP1實驗名稱生成樹協(xié)議STP2實驗?zāi)康睦斫馍蓸鋮f(xié)議STP的配置及原理3背景描述某學校為了開展計算機教學和網(wǎng)絡(luò)辦公，建立了一個計算機教室和一個校辦公區(qū)，這兩處的計算機網(wǎng)絡(luò)通過兩臺交換機互聯(lián)組成內(nèi)部校園網(wǎng)，為了提高網(wǎng)絡(luò)的可靠性，網(wǎng)絡(luò)管理員用了2條鏈路將交換機互連，現(xiàn)要在交換機上做適當?shù)呐渲茫咕W(wǎng)絡(luò)避免環(huán)路。木實驗以2臺S3550-24交換機為例，2臺交換機分別命名為SwitchA,SwithcB。PC1與PC2在同一個網(wǎng)段，假設(shè)IP地址分別為192.168.0.137,192.168.0.136,網(wǎng)絡(luò)掩碼為255.255.255.0.
2、4實驗功能使網(wǎng)絡(luò)在有冗余鏈路的情況下避免環(huán)路的產(chǎn)生，避免廣播風暴等。5實驗步驟步驟一.在SwitchA和SwithcB上分別開啟生成樹協(xié)議。這里對SwithcA做配置SwitchA>enable14Password:SwitchA#configureterminalEnterconfigurationcommands,oneperline?EndwithCNTL/Z.SwitchA(config)#spanning-treeSwitchA(config)#end驗證測試：SwitchA#$howspanning-treeStpVersion:RSTPSysStpS
3、tatus:EnabledBaseNumPorts:24MaxAge:20HelloTime:2ForwardDelay:15BridgeMaxAge:20BridgeHelloTime:2BridgeForwardDelay:15MaxHops:20TxHoldCount:3PathCostMethod:LongBPDUGuard:DisabledBPDUFilter:DisabledBridgeAddr:00d0.f8ff.837cPriority:8192TimeSinceTopologyChange:0d:0h:26m:8sTopologyChanges:
4、0DesignatedRoot:200000D0F8FF837CRootCost:0Roo田oft:0步驟二.設(shè)置生成樹模式SwitchA#configureterminalEnterconfigurationcommands,oneperline?EndwithCNTLVZ.SwitchA(config)#spanning-treemodestpSwitchA(config)#exit驗證測試：SwitchA#showspanning-t「eeStpVersion:STPSysStpStatus:EnabledBaseNumPorts:24MaxAge:20He
5、lloTime:2ForwardDelay:15BridgeMaxAge:20BridgeHelloTime:2BridgeForvvardDelay:15MaxHops:20TxHoldCount:3PathCostMethod:LongBPDUGuard:DisabledBPDUFilter:DisabledBridneAddr:00d0.f8ff.837cPriority:8192TimeSinceTopologyChange:0d:0h:27m:2sTopologyChanges:0DesignatedRoot:200000D0F8FF837CRootCo
6、st:0RootPort:0步驟三.設(shè)置交換機A的優(yōu)先級為4096(交換機B的優(yōu)先級采用默認的優(yōu)先級32768)SwitchA#configureterminalEnterconfigurationcommands,oneperline?EndwithCNTLVZ.SwitchA(config)#spanning-treepriority4096SwitchA(config)#exit驗證測試：SwitchA#showspanning-treeStpVersion:RSTPSysStpStatus:EnabledBaseNumPorts:24MaxAge:20He
7、lioTime:2ForwardDelay:15BridgeMaxAge:20BridgeHelloTime:2BridgeForwardDelay:15MaxHops:20TxHoldCount:3PathCostMethod:LongBPDUGuard:DisabledBPDUFilter:DisabledBridgeAddr:00d0.f8ff.84a5Priority:8192TimeSinceTopologyChange:0d:lh:18m:43sTopologyChanges:0DesignatedRoot:200000D0F8FF84A5RootCo
8、st:0R
