配置虚拟局域网(VLAN)

第三章配置虚拟局域网 VLAN 虚拟局域网VLAN 网络分段灵活性安全性 3rdfloor 2ndfloor 1stfloor SALES HR ENG 每个VLAN都等于一个广播域 VLAN的操作与特性 每个VLAN都类似一个物理网段一个VLAN可跨越多个交换机干道 Trunk 携载多个VLAN的信息 VLAN的成员模式 静态 由管理员静态 人工 配置动态 基于MAC地址 IP地址等识别其成员资格 VLAN5 静态VLAN 动态VLAN MAC 1111 1111 1111 VLAN10 Porte0 9 Porte0 4 基于端口的VLAN划分 VLAN2 VLAN1 VLAN3 VLAN的标准 CiscoISL InitialMACAddress InitialType Data NewCRC 2 ByteTPID2 ByteTCI ISLHeader26bytes EncapsulatedEthernetframe CRC4bytes IEEE802 1Q 配置静态VLAN EngineeringVLAN MarketingVLAN SalesVLAN Floor 1 Floor 2 Floor 3 PhysicalLayerLANSwitch HumanLayer NetworkLayer 192 20 24 0 RoutingFunctionInterconnectsVLANs 192 20 21 0 192 30 20 0 Data LinkLayerBroadcastDomains AllusersattachedtosameswitchportmustbeinthesameVLAN x VLAN的配置步骤 定义Trunk创建VLAN划分VLAN成员检查配置结果 DefiningaTrunk trunk on off desirable auto nonegotiate wg sw a config if On SettrunkonandnegotiatewithothersideOff SettrunkoffandnegotiatewithothersideDesirable Negotiatewithotherside Trunkonifothersideison desirable orautoAuto WillbeatrunkonlyiftheothersideisonordesirableNon negotiate Settrunkonandwillnotnegotiate DefiningaTrunk wg sw a confterminalEnterconfigurationcommands oneperline EndwithCNTL Zwg sw a config interfacef0 26wg sw a config if trunkon Firsttrunkport PortA On SettrunkonandnegotiatewithothersideOff SettrunkoffandnegotiatewithothersideDesirable Negotiatewithotherside Trunkonifothersideison desirable orautoAuto WillbeatrunkonlyiftheothersideisonordesirableNon negotiate Settrunkonandwillnotnegotiate trunk on off desirable auto nonegotiate wg sw a config if VerifyingaTrunk wg sw a showtrunk A B 中国最庞大的数据库下载 VerifyingaTrunk wg sw a showtrunkaDISLstate On Trunking On Encapsulationtype ISL wg sw a showtrunk A B AddingaVLAN vlanvlan namevlan name wg sw a config AddingaVLAN wg sw a confterminalEnterconfigurationcommands oneperline EndwithCNTL Zwg sw a config vlan9nameswitchlab2 vlanvlan namevlan name wg sw a config VerifyingaVLAN wg sw a showvlan vlan VerifyingaVLAN wg sw a shvlan9VLANNameStatusPorts 9switchlab2Enabled VLANTypeSAIDMTUParentRingNoBridgeNoStpTrans1Trans2 9Ethernet1000091500011Unkn00 wg sw a showvlan vlan ModifyingaVLANName vlanvlan namevlan name wg sw a confterminalEnterconfigurationcommands oneperline EndwithCNTL Zwg sw a config vlan9nameswitchlab90 wg sw a showvlan9VLANNameStatusPorts 9switchlab90Enabled wg sw a config AssigningSwitchPortstoaVLAN vlan membership static vlan dynamic wg sw a config if AssigningSwitchPortstoaVLAN wg sw a confterminalEnterconfigurationcommands oneperline EndwithCNTL Zwg sw a config interfaceethernet0 8wg sw a config if vlan membershipstatic9 vlan membership static vlan dynamic wg sw a config if VerifyingVLANMembership wg sw a showvlan membership VerifyingVLANMembership wg sw a showvlan membershipPortVLANMembershipTypePortVLANMembershipType 15Static131Static21Static141Static31Static151Stati