CCIE版本苏州思朋信息.docx

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CCIE版本苏州思朋信息.docx

CCIE版本苏州思朋信息

CCIELABK2

实验拓扑图

Section-1L2Technologies

1.1TroubleshootLayer2SwitchingNetwork(4Points)

One-two(orfour)faultshavebeeninjectedintothepre-configurations.Theseinssuesmayimpedeaworkingsolutionforcertainportionsofthislabsexamandaffectanylabsexamsection.Youmustverifythatallofyourconfigurationsworkasexpected.Ifsomethingisnotworkingasexpectedthenyoumustfixtheunderlyingproblem.Pointwillbeawardedforsolvingeachproblem.However,ifyoufailtosolveaparticularproblem,andtheinjectedfaultpreventsyoufromhavingaworkingsolulationsofthislab,thenyouwilllosepointsforthefaultandthelabthatisnotworking.

预配置中有两个错误,改正一个得2分。

第一个错误在R1。

interfaceG0/1.11

encapsulationdot1q11native

解决方法:

interfaceG0/1.11

noencapsulationdot1q11native

encapsulationdot1q11

ipaddressYY.YY.0.97255.255.255.224

第二个错误在SW3。

monitorsession20destinationinterfaceFa0/10

解决方法:

nomonitorsessionall

interfaceFa0/10

switchportaccessvlan33

interfacevlan33

ipaddress150.3.YY.1255.255.255.0

1.2Layer2ProvisioningacoreL2

•Use802.1wonallfourswitches(showspanning-treesummarytotals)

•VTPistransparent(showvtpstatus)

•PPPontheseriallinksR2&R3

•Ensurethatspanningtreeenterstheforwardingstateimmediatelyonlyforaccessswitchportsbypassingthelisteningandlearningstates,TheportsthatconnecttoBBisnotconsideredastheaccessports,(showspanning-treeinterfaceportfast)

•AvoidingtransmittingBPDUsonanyaccessswitchportonanyoftheseports,theportsshouldbeshutdownimmediately,useasinglecommandtoconfigureit.(showspanning-treesummarytotals)

•Ensurethatallfourswitchesareabletoreadtounidirectionallinkfailureforanyswitchtoswitchporttheaffectedportshouldbedisabledintheeventfailure.(showudld

VLANS

VLAN

NAME

PORT

10

Marketing

R1F0/1.10

11

Sales

R1F0/1.11

20

Engineering

R2F0/0

30

HR

R3F0/0

33

BB3

Sw3F0/10

42

ISP42

R4F0/0;SW2

51

ISP51

R5F0/1

54

ISPBB

R4F0/1,R5F0/0

234

Support

R2F0/1,SW3,SW4

243

QA

SW2,SW3,SW4

300

Admin

R3F0/1

需求解析:

•VTP采用透明模式;

•R2和R3间采用PPP封装链路;

•采用R-PVST;

•确保交换机的access口能够立刻进入转发状态,略过监听和学习状态。

(连接BB的接口不做access口);

•避免上述access口收到BPDU,一旦收到BPDU,接口要立刻进入关闭状态;

•确保四台交换机能够解析链路故障,出现故障的接口进入err-disable状态

SW1/SW2/SW3/SW4:

spanning-treemoderapid-pvst//配置802.1w协议

spanning-treeportfastbpduguarddefault//只在配置了PortFast的端口上生效(考场上只需要sw1及sw2上配置,sw3无需此配置)

intrangef0/19–24

udldportaggressive//由于线缆连接为网线而非光纤

SW1/SW2:

intrangef0/2–5

spanning-treeportfast//在接口下启用portfast特性

考试时虽然物理拓扑上四台交换机都与BB相连,但SW4的CDPneighbor看不到BB,按照题目的意思UDLD只需要在四台交换机之间的trunk链路开启

1.3Trunking,EtherChannel

•Use802.1qthattheportsrequired.(showinterfacetrunk)

•Switchesshouldnotactivelyattempttoconvertthelinkstotrunklinkbynegotiatingthetrunkmode.

•UtilizeEtherchannelbetweenallswitchinginterconnectionsusingieeestandarttoactivelynegotiatechannel.(showetherchannelsummary)

•Etherchannelloadbalancingshouldbeaccomplishedbydestinationipaddress.(showetherchannelload-balance)

•ConfigureFastethernet0/1onSW2.EnsurethatonlyvlanSALESandMARKETINGareallowed.(showinttrunk)

•Configurethebackboneportsonsw1andsw2tobearoutedinterfaces.(showintf0/10switchport)

需求解析:

•使用802.1q标准封装trunk;

•trunk链路关闭动态协商;

•四台交换机间的trunk链路使用Etherchannel的IEEE协商方式进行捆绑;

•Etherchannel采用基于目的IP的负载均衡方式;

•SW2的F0/1封装trunk,并且只允许VLAN10,11通过;

•SW1和SW2上与BB相连得接口作为三层接口。

SW1/SW2/SW3/SW4:

interfacerangeFa0/19-24

switchporttrunkencapsulationdot1q

switchportmodetrunk

switchportnonegotiate//要在配置trunk后再配置非协商方式

shutdown

port-channelload-balancedst-ip

intrangef0/19-20

channel-group1modeactive//选择active模式会自动识别为LACP

intrangef0/21-22

channel-group2modeactive

intrangef0/23-24

channel-group3modeactive

注意:

必须先配置链路捆绑的负载均衡方式,再将接口加入channel-group,否则后配置的负载均衡方式无法生效,需要关闭两端接口或重启交换机才能转变。

SW1/SW2/SW3/SW4:

interfacerangeFa0/19-24

noshutdown

SW2

interfaceFa0/1//此端口是与R1相连的,配置Trunk完成单臂路由的连通。

switchporttrunkencapsulationdot1q

switchportmodetrunk

switchporttrunkallowvlan10,11

switchportnonegotiate

SW1/SW2:

intf0/10

noswitchport

1.4SpanningTreeRootSwitch

•SW1maybetherootforallvlanswhaterverthenewswitchesaddintotheswitchnetwork.(showspanning-treesummary/showspanning-treeroot)

•SW4shouldneverbecometherootforanyVlan.Ensurethisoccureswithoutchangingtheswitchpriority(withoutusingthe“spanningtreepriority”command.)(showspanning-treesummary)

SW1

spanning-treevlan1-4094priority0//题目可能不让用priority,则spanning-treevlan1-4094rootprimary

interfaceport-channel2//只在连接SW4的port-channle端口起RootGuard

spanning-treeguardroot

SW2

interfaceport-channel1

spanning-treeguardroot

SW3

interfaceport-channel3

spanning-treeguardroot

查看命令:

showspanning-treesummarytotals

showspanning-treeroot//查看根桥信息

1.5PortMirroring

ConfigureportmonitoringonSW3accordingtothefollowingrequirement:

•ThetransmitandreceivetrafficonportsF0/1throughF0/8andtheetherchannelport-channelforF0/19-20shouldmonitored.

•AcopyofthetrafficshouldbeforwardedtoFa0/11(showmonitorsession

需求解析:

•SW3的F0/1–F0/8和portchannel1均为镜像的源端口,将所有的流量映射到F0/11端口。

SW3

monitorsession1sourceinterfaceFastethernet0/1-8,port-channel1both

monitorsession1destinationinterfaceFastethernet0/11

注意:

镜像目的接口将会屏蔽入栈流量,只会向外发送镜像数据

//配完sourceinterface后showrun是分行显示的,即第一行是F0/1-8,第二行是port-channel1我配完就show了,关键要在showmonitorseesion1中看到source是“both”就OK了

1.6MACTableAging-timeTuning

•OnSW1,themacaddressofvlan20dynamicallylearnedshouldagingtwicefastthanothervlans.(showmacaddress-tableaging-time)

需求解析:

•修改SW1的VLAN20的MAC地址老化时间,使其老化速度是其它VLAN的两倍

SW1

macaddress-tableaging150vlan20//默认MAC是300秒超时老化,需求要快两倍就是150秒。

1.7Frame-RelaySwitchConfiguration

ConfigureR1andR3forframerelay,configuringR5astheframerelayswitchaccordingtothefollowingrequirements:

•UseCiscoLMIonFRSwitchonR5andautosenseonR1&R3.

•Donotuseanystaticframe-relaymaps.

•Useframe-relayencapsulationas“cisco”.

•Useframe-relaysubinterfaceonR1andR3,DLCInumberastheirsubinterfaceID,youshouldusetheexistentipaddressforthem,don’tusenewipaddresses.

•UseDLCIassignmenttablebelow.

•keepframerelayaddressingandlayer3ospfrequirementinmind.(useonlytheipaddressesspecifiedinDiagram1)

需求解析:

•R1和R3采用自动的LMI监听;

•不采用任何静态frame-relaymap;

•帧中继封装采用cisco封装标准;

•R1和R3采用点到点子接口建立帧中继,DLCI号作为子接口标识;

R5:

//考试时帧中继交换机不能登录,也不用自己配置。

frame-relayswitching//全局启用帧中继交换机功能,TS2排错也考

interfaces0/0/0

encapsulationframe-relay//默认采用的封装方式就是CISCO

frame-relayintf-typedce

frame-relaylmi-typecisco//默认采用的LMI方式就是CISCO

frame-relayroute221interfaces0/0/1223

noshutdown

interfaces0/0/1

encapsulationframe-relay

frame-relayintf-typedce

frame-relaylmi-typecisco

frame-relayroute223interfaces0/0/0221

noshutdown

//实验过程中,clockrate不一定在R5上配置,考场里是在R1、R3上配置了。

R1

interfaces0/0/1

encapsulationframe-relay

noarpframe-relay

noframe-relayinverse-arp

noframe-relaylmi-type//如果有lmi-type则需要先no掉,才能自动感知

noshut

interfaces0/0/1.13point-to-point

frame-relayinterface-dlci221pppVirtual-Template1//将虚拟模版与本地DLCI值关联

补充:

封装类型为frame-relay的serial口不能进行ppp验证,使用Virtual-Template来实现

interfacemultilink1//要先定义multilink接口才能将VT绑定到multilink

pppmultilink

pppmultilinkgroup1//上面这两条命令会在绑定VT后自动生成

ipunnumberedloopback0//以太网接口下是无法配置借用ip地址

补充:

两端直连接口如果都借用ip地址,即使2ip地址不再同一网段仍可以跑路由协议

bandwidth128

补充:

PPPMultilink协议(MP)具有绑定两条或多条同步并行连接的能力,所产生的虚拟连接拥有的带宽等于各条独立连接的带宽的总和。

inerfaceVirtual-Template1

pppmultilink

pppmultilinkgroup1

bandwidth128

R3

interfaces0/0/0

encapsulationframe-relay

noarpframe-relay

noframe-relayinverse-arp

noshut

interfaces0/0/0.31point-to-point

frame-relayinterface-dlci223pppVirtual-Template1

interfacemultilink1//要先定义multilink接口才能将VT绑定到multilink

pppmultilink

pppmultilinkgroup1//上面这两条命令会在绑定VT后自动生成

ipunnumberedloopback0

bandwidth128

inerfaceVirtual-Template1

pppmultilink

pppmultilinkgroup1

bandwidth128

考场里的SW1SW2SW3SW4的iprouting和ipcefdistributed没开启,SVI的ip地址默认也没配置需手工补上;

SW1/SW2/SW3/SW4:

iprouting

ipcefdistributed

SW1

interfacevlan11

ipaddressyy.yy.0.98255.255.255.224

interfacevlan51

ipaddressyy.yy.0.129255.255.255.224

SW2

interfacevlan42

ipaddressyy.yy.128.129255.255.255.224

interfacevlan243

ipaddressyy.yy.128.163255.255.255.224

SW3

interfacevlan33

ipaddress150.3.yy.1255.255.255.0

interfacevlan243

ipaddressyy.yy.128.161255.255.255.224

interfacevlan234

ipaddressyy.yy.128.195255.255.255.224

SW4

interfacevlan243

ipaddressyy.yy.128.162255.255.255.224

interfacevlan234

ipaddressyy.yy.128.194255.255.255.224

 

Section-2L3Technologies

2.1IPv4OSPFpart1

ConfiguretheOSPFarea0andarea51aspertheIGPtopologydiagramandthefollowingrequirements:

•TheprocessIDcanbeanynumber.

•Loopback0interfacesshouldbeadvertisedinanyOSPFareaforallnon-MPLSDevices.(showipprotocols|sectionospf1)

•UpdatesshouldbeadvertisedonlyoutoftheinterfacesthatareindicatedintheIGPtopologydiagram.(showipprotocols|sectionospf1/showipospfintbief)

•SW1shouldalwaysgenerateadefaultrouteintotheOSPFdomain.

•TheBB1linkshouldbeseenasExternalOSPFroutesintheOSPFdomain.

•Makesurethattheinterfacesareseeninthecorrectareasperthediagram.

•DonotcreateadditionalOSPFareas.

需求解析:

•自由定义OSPF进程号;

•除MPLS设备外回环口0加入OSPF进程;

•宣告网段精确匹配到接口;

•SW1向OSPF域强制通告默认路由;

•连接

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