1、分配端口F0/2给lan 20S212-A(config)#nterfc stethern 023S2126-(configif)#sithport moun !定义F0/3为tu端口S26-A(cofg)#inerface fastethet /24S212-A(cnfg-if)sitchpormoetrunk !定义F0/4为unk端口S212A(cofig)nnin-tre mstconfguation ! 进入SP配置模式2126A(cnfigt)#instance vlan 1,0 !配置nsace1(实例1)并关联Va1和10S26-(conf-ms)istnce 2 lan 2,
2、0 !配置实例并关联Van 20和40S226-(config-mst)#nm region !配置域名称S2126-A(confimt)#rsion !配置版本(修订号)验证测试:验证MSTP配置2126-#shwsanigtre mst configaton ! 显示MSTP全局配置Mi spaing tee potool : EnlNme : region1Revision :Intane VlansMapped- -0 2-9,1-9,21- 39,41- 40941 1,2 0,40第二步:配置接入层交换机21616-B(config)#sannng-tre !S2126-B (of
3、i)anngeemdemstp !采用MSTP生成树模式S2126-B(cofg)vla10 !S216-B(cnfi)#van 20 !创建Vlan 20S2126-(conig)#an !创建Vlan 40S12-(con)#intce fastetet/1216-B(cig-if)#sichortaces vlan 10 !分配端口F/1给an10S216-B(cnfi)ntere fastthrnt 2S126B(cofig-if)#sihportaccs vla 40 !分配端口F0/2给Van40S26-B(coni)#iterfacfastehern0/23S2126-B(onf
4、-if)#switchpoode tru !定义F0/23为tunk端口S2126-B(nig)#interfce ethernet 024226-B(fig-if)switcportode trunk !定义F/24为trunk端口216-B(ong)pnning-tree ms conigrtion ! 进入MP配置模式S216-B(onf-mst)insancevlan 1,1 !配置istan (实例)并关联Vl 1和10S126-B(fig-mt)#stn 2 vla 20,40 !配置实例2并关联Van 20和402126B(nst)#me region1 !126-B(confi
5、g-mst)#revson !验证测试:验证TP配置S2126show snnin-tremt confgurtionMulti spaning tree prtoco : EnabledName :eon1Rvisn: Intc VlanMaped- -0 ,11,21-,1-941 1,02 0,40第三步:配置分布层交换机3550S3550A(cfig)#spanin-te !S3550-A(confg)#spaitree m mstp !采用MP生成树模式S355-A(conig)#vlan 10S3550-A(onfig)#van20S350-A(config)#vlan 40S35
6、-A(config)#intrace fastethernet /1S350-A(onigf)#witchpotmod trun !定义1为trn端口S3550-(conf)#inefafatetheret 033550A(cnfig-i)#swtchpt mode trun !定义023为trnk端口S350A(cofig)#itrfc fasetenet 0243550-A(ngf)switpotmod trunk !定义/24为trunk端口S355- (config)snng-treemst 1 proity096 !配置交换机S3550-在instanc 1中的优先级为4096 ,缺
7、省是2768,值越小越优先成为该instace中的roo swichS35-A (coig)#sain-ree mstconfiguraion !进入MSTP配置模式S3550- (confg-mst)#nsanc vl ,10 ! 配置实例1并关联lan 1和0S3550- (cnfg-mst)nsane vlan20,40 !配置实例2并关联Vln 和4S3550 (cofig-t)#ae egion1 !配置域名为region1S50-A (cfmst)#rvisin1 ! 配置版本(修订号)S350-#show spnigtre mst nfiguaionMlti spannin tr
8、e protol: abledName : eion1Rvisio : 1tace Vlas Mapped- - ,11-19,21-39,140941 1,102 20,40第四步:配置分布层交换机3550-BS3550B(nig)#spaning-tree !S3550-B (confi)#pannig-tremde st !S35B(confi)#vlan 10S50B(conig)#vlan 20S3550B(config)#vla 4350(confg)#interaseteret /1S355-B(cfg-i)#swtchprt ode trunk ! 定义F01为trnk端口S5
9、50-(onfig)#inerface fsthernet 023S3550-B(config-if)#swiportmodetrun ! 定义F0/3为trunk端口S550-B(oni)#inerfe fshernt 024S355-B(onfig-if)#switchpormodeun ! 定义F/4为ruk端口S350-B(confi)#pnnin-tre ioit496 !配置交换机S3550-在istanc 2(实例) 中的优先级为4096 ,缺省是326,值越小越优先成为该region (域)中的ootswitS350-B (cofig)#paning-re mstcongura
10、ton !进入MS配置模式S550-B (cnfig-mst)#nsac van 1,1 !配置实例1并关联Vlan 1和10S3550-B(onfg-ms)#insac2 ln 20,40 ! 配置实例2并关联Vln 2和4350-B (cni-mst)#na region1 ! 配置域名为regon1S3550-(fig-mst)#reviion 1 !验证MST配置S350-B#o spanning-treemst ofguationMui spanningte protoc :abldNam : rein1Revsio:nstance Vlan Mpped- -0 2-,119,1-9
11、,4140941 ,102 20,0第五步:验证交换机配置S3550-A#shw spani-e mt 1 !显示交换机3550上实例1的特性# MS 1 vlnappe: 1,10BdAr :d.f8f.3 !交换机355的MAC地址rioriy : 4096 ! 优先级imeSiceToployChng: 0d:h:21m:17TopoloyCanes: DsgntedRoot : 000D0FFF4E !后12位是MAC地址,此处显示是55-自身的AC,这说明S3550-A是实例1 (instac 1)的生成树的根交换机RootCos : 0otPort:50-B#sho sanning
12、tee mst 2 !显示交换机S3550-上实例2的特性# MS 2 vlans mapp: 20,40Bdgdd: 0d.8ff.4662riity : 40TimeSneTologyChe:31m:0splgChangs :0esnatedRo: 100200D0F8FF4662 !S3550B是实例 (instance 2)的生成树的根交换机RootCot :Rootrt :S126-A#sh panin-tre mst 1 !显示交换机S2126-上实例1的特性# MST 1 las mappd :1,10rdgeAddr :00d0.ff.1e49Pority : 3268Timc
13、eToplogyCag : 7d:3h:1m:1sTopoloyCangs :Desiateot : 1000D0F8FF43F ! 实例1的生成树的根交换机是3550AtCost : 200000RoPot : Fa0/2 !对实例而言,S2126-A的根端口是F03 216-A#show saning-tre st2 !显示交换机S2126-A上实例2的特性# ST 2 vl apped : 20,0BridgeAddr:0df8fe.1e49Piorty: 32768nceTopologyChag:3:19m:ToogChange :DesgateRoot : 1000D08FF4662
14、 !实例的生成树的根交换机是S3550-RotCot : 000RootPor: Fa0/24 !对实例2而言,S216-A的根端口是Fa024 类似可以验证其它交换机上的配置。【注意事项】 对规模很大的交换网络可以划分多个域(egin),在每个域里可以创建多个istance(实例); 划分在同一个域里的各台交换机须配置相同的域名(nam)、相同的修订号(evision nmber)、 相同的 instanvlan 对应表; 交换机可以支持65个MSTP instac,其中实例0是缺省实例,是强制存在的,其它实例可以创建和删除; 将整个spaning-ree恢复为缺省状态用命令spanning
15、-tree et 。【参考配置】S2#how run !交换机S2126-A的全部配置lding cofigurti.Curet cfigurtion : 583 bytes!sin 1.sname S21Aanning-reespning-ree t confguratio instanc 1 l1,0instne 2 lan20,4 nae region1 revio1!terface stthrnet0/1witchportacss vn 0interface fasttern0/2 ichport acess vln 20intefcfstEthern 0/3sthpot mdetun
16、kiterface asthrnt/2witchportode tunkend2126-B#shw run ! 交换机S2126-B的全部配置ilding conigratio.rre ofigtin : 83 bytesverson.0hostnameS216-Bpannig-treanng-ee mst onfiguratio stance 1 vla1,0istance 2 vlan20,40 ame reon1 rvison1intrfacefastEthernet0/1swtchort acss vla 10iteacefasthrnt 0/2 swithrt access la4i
17、nterfae fasthrne 0/23swithpotmde unkitefce fatEthenet 0/ swicortmode trnkS3550-A#how run ! 交换机S3550-的全部配置uildingcniuati.Currentcfgration :46btsversion 10hotam S3550- spanngtee spanning-tee mstconfiguratio istace 1 lan ,1insae vlan 20,40 nmergion1 revin 1 sanning-trest 1 piority 06nterface FastEheret
18、0 swcpot mdernkintrfce Fstthernet 23 swithport mode unintefce asEther 0/24 witchpote tren350-B#how ru !交换机S355-B的全部配置Building confurtio.Current configurti :54 ytesvesio 1hostname 550-B paning-tre spaningre m cnfiuration instance 1 van1,10istan2 lan 20,0 name reg eiso 1 spaig-te mst 2priory 4096interfae FasEthrnet/1 wtchport mode trunkirace FatEthernt 0/23switch mtrnkitrfFastEthernt 024swithportmd nd
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