CCNP.642-902.V200题库（2013.2.20）实验题

培训 焊锡培训资料ppt免费下载焊接培训教程 ppt 下载特设培训下载班长管理培训下载培训时间表下载 大讲堂官方 YY频道：3660 鸿鹄论坛：bbs.hh010.com CCNPCCNPCCNPCCNP题库 考试代号： 642-902642-902642-902642-902 考试时间： 120120120120分钟 通过分数： 790790790790 题库版本： V200V200V200V200 【优惠】CCNPCCNPCCNPCCNP官方正规报名考试仅需 1500150015001500元((((团报更优惠)))) 1111 附赠价值 500500500500元的 FTPFTPFTPFTP账号，1000G1000G1000G1000G视频教程无限制下载 2222 加入 CCNPCCNPCCNPCCNP题库战报群，天天更新新题，天天有战报！ 3333 负责考前考后所有注册，避免非技术性因素失误。 鸿鹄大讲堂：http://bbs.hh010.com/thread-46172-1-1.htmlhttp://bbs.hh010.com/thread-46172-1-1.htmlhttp://bbs.hh010.com/thread-46172-1-1.htmlhttp://bbs.hh010.com/thread-46172-1-1.html 培训大讲堂官方 YYYYYYYY频道：3660366036603660 CCNPCCNPCCNPCCNP题库战报交流 QQQQQQQQ群：82227482 （500500500500人超级群） CCNPCCNPCCNPCCNP题库战报交流区： http://bbs.hh010.com/forum-26http://bbs.hh010.com/forum-26http://bbs.hh010.com/forum-26http://bbs.hh010.com/forum-263333-1.html-1.html-1.html-1.html 1000100010001000 GGGG视频教程免费下载：http://bbs.hh010.com/forum-228-1.htmlhttp://bbs.hh010.com/forum-228-1.htmlhttp://bbs.hh010.com/forum-228-1.htmlhttp://bbs.hh010.com/forum-228-1.html ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ 1. EIGRP OSPF Redistribution Sim Question: (Hope someone will contribute the detailed requirement of this sim!) Some information I have gathered so far: R2 is an ASBR for EIGRP 100 and OSPF AREA 24 R3 is an ASBR for EIGRP 100 and OSPF AREA 34 [note: so there are TWO separate areas on TWO separate ASBRS thus you need to do redistribution on R2 and R3 R1 is ONLY in EIGRP 100, and is THE ONLY router you can ping from. R4 has a loopback interface that must be pinged from R1. R4 is running OSPF and has redundant link to EIGRP network over R3 router. Notice: You should make a ping from R1 to 172.16.100.1 network to make sure everything is working correctly. Thanks to POONAMPOONAMPOONAMPOONAM who send us the topology and configuration. He got 100% on EIGRP-OSPF lab so this solution is perfect! Please say thank to him and others who contribute this lab-sim! SOLUTION from POONAMPOONAMPOONAMPOONAM b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ AnswerAnswerAnswerAnswer andandandand Explanation:Explanation:Explanation:Explanation: First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU) of the s0/0/0 interface (the interface of R2 connected to R4) for redistribution : R2#R2#R2#R2#showshowshowshow interfaceinterfaceinterfaceinterface s0/0/0s0/0/0s0/0/0s0/0/0 Write down these 5 parameters, notice that we have to divide the Delay by 10 because its metric unit is tens of microsecond. For example, we get Bandwidth=1544 Kbit, Delay=20000 us, Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows: R2#R2#R2#R2#configconfigconfigconfig terminalterminalterminalterminal R2(config)#R2(config)#R2(config)#R2(config)# routerrouterrouterrouter ospfospfospfospf 1111 R2(config-router)#R2(config-router)#R2(config-router)#R2(config-router)# redistributeredistributeredistributeredistribute eigrpeigrpeigrpeigrp 100100100100 metric-typemetric-typemetric-typemetric-type 1111 subnetssubnetssubnetssubnets R2(config-router)#R2(config-router)#R2(config-router)#R2(config-router)#exitexitexitexit R2(config-router)#R2(config-router)#R2(config-router)#R2(config-router)#routerrouterrouterrouter eigrpeigrpeigrpeigrp 100100100100 R2(config-router)#R2(config-router)#R2(config-router)#R2(config-router)#redistributeredistributeredistributeredistribute ospfospfospfospf 1111 metricmetricmetricmetric 1544154415441544 2000200020002000 255255255255 1111 1500150015001500 (Notice: In fact, these parameters are just used for reference and we can use other parameters with no problem. Also, a candidate said that the simulator didn’t accept the Bandwidth of 1544; in that case, we can use a lower value, like 128. If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000) For R3 we use the show interface fa0/0 to get 5 parameters too R3#R3#R3#R3#showshowshowshow interfaceinterfaceinterfaceinterface fa0/0fa0/0fa0/0fa0/0 For example we get Bandwidth=10000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500 bytes R3#R3#R3#R3#configconfigconfigconfig terminalterminalterminalterminal R3(config)#R3(config)#R3(config)#R3(config)#routerrouterrouterrouter ospfospfospfospf 1111 R3(config-router)#R3(config-router)#R3(config-router)#R3(config-router)#redistributeredistributeredistributeredistribute eigrpeigrpeigrpeigrp 100100100100 metric-typemetric-typemetric-typemetric-type 1111 subnetssubnetssubnetssubnets R3(config)#R3(config)#R3(config)#R3(config)#exitexitexitexit b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ R3(config-router)#R3(config-router)#R3(config-router)#R3(config-router)#routerrouterrouterrouter eigrpeigrpeigrpeigrp 100100100100 R3(config-router)#R3(config-router)#R3(config-router)#R3(config-router)#redistributeredistributeredistributeredistribute ospfospfospfospf 1111 metricmetricmetricmetric 10000100001000010000 100100100100 255255255255 1111 1500150015001500 Finally you should try to “show ip route” to see the 172.16.100.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this network. Maybe the “copy running-config startup-config” command will not work in this lab so don’t worry, just skip it. WISH U A VERY BEST GUYS……….. GO ROCK… 注意：考试的时候应该可以看到题干上有句 thethethethe greatestgreatestgreatestgreatest bandwidthbandwidthbandwidthbandwidth这些字眼，那么基本就 是要加 distancedistancedistancedistance，另外记得一定要 showshowshowshow下接口！！！ 本题干要求在 R1 去 ping172.16.100.1/24 的时候根据链路开销达到冗余的目的。 下面就该问题分析： 因为最终的目的是 R1 能 ping 通 172.16.100.1，而而而而 pingpingpingping基于基于基于基于 TCPTCPTCPTCP，，，，即有去有回即有去有回即有去有回即有去有回，，，，从去和回从去和回从去和回从去和回 的两个方向分析冗余的两个方向分析冗余的两个方向分析冗余的两个方向分析冗余，重点在重点在重点在重点在 R1R1R1R1 和和和和 172.16.100.1172.16.100.1172.16.100.1172.16.100.1 上上上上，，，，难点在难点在难点在难点在 ASBRASBRASBRASBR 的的的的 R2R2R2R2 和和和和 R3R3R3R3上上上上（（（（重点在重点在重点在重点在 两端，难点在中间两端，难点在中间两端，难点在中间两端，难点在中间））））；在这里假设 R2 和 R3 上已经做了双向重发布： 一，一，一，一，R1R1R1R1 ---->---->---->----> 172.16.100.1:172.16.100.1:172.16.100.1:172.16.100.1: R1 要把数据包扔给 172.16.100.1， R1 首先要学到路由，将发生下列事件： 1、R3 通过 OSPF 1 学到 172.16.100.0 路由，重发布到 EIGRP 100 中，默认 EIGRP 学到的是 D EX，AD=170，在 EIGRP 域内将学到的路由发给 R2； 2、R2 则收到关于同条路由 172.16.100.1：一从 OSPF 学到的 O E2 AD=110，二从 R3 送来的 D EX AD=170，三是自己重发布的 D EX AD=170。由于从 R3 学到的同条路由，R2 不会再次将 它发回去。同条路由从不同路由 协议 离婚协议模板下载合伙人协议 下载渠道分销协议免费下载敬业协议下载授课协议下载 学到，则 R2 的路由表会基于以下事实：比较比较比较比较 ADADADAD，，，，小小小小的的的的 ADADADAD放入路由表中放入路由表中放入路由表中放入路由表中，于是从 OSPF 学到的路由进入路由表； 注意本题核心：在 R2 上同时从两个协议收到 172.16.100.1 这一条路由，则比较 AD，谁的 AD 小就将放入路由表；其中 R2 收到 O和 D EX 3、R1 学到 172.16.100.1 路由方向为：172.16.100.1 ---->R4---->R2---->R1,那么 R1 ping 的数据包为：R1---->R2---->R4---->172.16.100.1。 二，二，二，二， 172.16.100.1172.16.100.1172.16.100.1172.16.100.1回包，回包，回包，回包，172.16.100.1172.16.100.1172.16.100.1172.16.100.1 ---->---->---->----> R1:R1:R1:R1: 172.16.100.1 要回包到 R1，172.16.100.1 首先也要学到 R1 的路由，将发生下列事件： 1、R2 将 R1 路由重发布到 OSPF 中 2、R3 将 R1 路由重发布到 OSPF 中 3、R4 学到两个方向的同条路由，如果都是 O E2 的话，cost = 20，比较不出来，改成 O E1 才能反映真实的开销，有利于选路；如果 O E1 就要改 metric 4、172.16.100.1 学到 R1 的路由方向为：R1---->R2---->R3---->R4---->172.16.100.1. 172.16.100.1 数据包为：172.16.100.1---->R4---->R3---->R2---->R1。 b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ 做完后，扩展 ping 测试（traceroute 也可）。实验拓扑： 因为人家前面解答已经很专业了，所以我只给出最后从 R1 ping 172.16.100.1 的结果： 本题目变形：就是在 R2—R3 的线路可能考试的时候给的不是串口而是以太网口不是串口而是以太网口不是串口而是以太网口不是串口而是以太网口，R2 到 R3 形成次优路径，此为双点双向重发布的变体，结合需求难度稍大。 b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ 给拓扑： 注意：考试的时候应该可以看到题干上有句 thethethethe greatestgreatestgreatestgreatest bandwidthbandwidthbandwidthbandwidth这些字眼，那么基本就 是要加 distancedistancedistancedistance，另外记得一定要 showshowshowshow下接口！！！ 从 thethethethe greatestgreatestgreatestgreatest bandwidthbandwidthbandwidthbandwidth知道，R1 到 172.16.100.1 的往返最低开销是： 172.16.100.1 <----> R4 <----> R3 <----> R2 <----> R1 因为上面已经分析过了，所以就在 R2 上修改某种 IGP 的 AD 即可。 R2(config-router)#R2(config-router)#R2(config-router)#R2(config-router)# distancedistancedistancedistance eigrpeigrpeigrpeigrp 90909090 109109109109 ------------如果 R2-R3R2-R3R2-R3R2-R3是以太网的话就要加上这条命令 把从 R3R3R3R3发过来的路由 ADADADAD改为 109109109109小于 OSPFOSPFOSPFOSPF 110110110110，则 EIGRPEIGRPEIGRPEIGRP路由会进入 R2R2R2R2路由表中。 2.Policy Based Routing Sim QuestionQuestionQuestionQuestion Company Acan has two links which can take it to the Internet. The company policy demands that you use web traffic to be forwarded only to Frame Relay link if available and other traffic can go through any links. No static or default routing is allowed. b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ AnswerAnswerAnswerAnswer andandandand Explanation:Explanation:Explanation:Explanation: Notice:Notice:Notice:Notice: TheTheTheThe answeransweransweranswer andandandand explanationexplanationexplanationexplanation belowbelowbelowbelow areareareare fromfromfromfrom PeterPanPeterPanPeterPanPeterPan and HelperHelperHelperHelper.Please say thank to them! All the HTTP traffic from the EIGRP Network should go through Frame Relay link if available and all the other traffic should go through either link. The only router you are able to administrate is the Border Router, from the EIGRP Network you may only send HTTP traffic. As the other people mentioned, actually it is not a BGP lab. You are not able to execute the command “router bgp 65001″ 1)1)1)1) AccessAccessAccessAccess listlistlistlist thatthatthatthat catchescatchescatchescatches thethethethe HTTPHTTPHTTPHTTP traffic:traffic:traffic:traffic: BorderRouter#BorderRouter#BorderRouter#BorderRouter#access-listaccess-listaccess-listaccess-list 101101101101 permitpermitpermitpermit tcptcptcptcp anyanyanyany anyanyanyany eqeqeqeq wwwwwwwwwwww Note that the server was not directly connected to the Border Router. There were a lot of EIGRP routes on it. In the real exam you do not know the exact IP address of the server in the EIGRP network so we have to use the source as “any” to catch all the source addresses. 2)2)2)2) RouteRouteRouteRoute mapmapmapmap thatthatthatthat setssetssetssets thethethethe nextnextnextnext hophophophop addressaddressaddressaddress totototo bebebebe ISP1ISP1ISP1ISP1 andandandand permitspermitspermitspermits thethethethe restrestrestrest ofofofof thethethethe traffic:traffic:traffic:traffic: BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#route-maproute-maproute-maproute-map pbrpbrpbrpbr permitpermitpermitpermit 10101010 BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#matchmatchmatchmatch ipipipip addressaddressaddressaddress 101101101101 b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#setsetsetset ipipipip next-hopnext-hopnext-hopnext-hop 10.1.101.110.1.101.110.1.101.110.1.101.1 BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#exitexitexitexit BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#route-maproute-maproute-maproute-map pbrpbrpbrpbr permitpermitpermitpermit 20202020 (Notice: the route-maproute-maproute-maproute-map pbrpbrpbrpbr permitpermitpermitpermit 20202020 line allows other traffic than HTTP to be routed. Otherwise, other traffic will be dropped) 3)3)3)3) ApplyApplyApplyApply thethethethe route-maproute-maproute-maproute-map onononon thethethethe interfaceinterfaceinterfaceinterface totototo thethethethe serverserverserverserver inininin thethethethe EIGRPEIGRPEIGRPEIGRP Network:Network:Network:Network: BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#BorderRouter(config-route-map)#exitexitexitexit BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#intintintint fa0/0fa0/0fa0/0fa0/0 BorderRouter(config-if)#BorderRouter(config-if)#BorderRouter(config-if)#BorderRouter(config-if)#ipipipip policypolicypolicypolicy route-maproute-maproute-maproute-map pbrpbrpbrpbr BorderRouter(config-if)#BorderRouter(config-if)#BorderRouter(config-if)#BorderRouter(config-if)#exitexitexitexit BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#BorderRouter(config)#exitexitexitexit 4) There is a “Host for Testing”, click on this host to open a box in which there is a button named “Generate HTTP traffic”. Click on this button to generate some packets for HTTP traffic. Jump back to the BorderRouter and type the command “show route-map”. BorderRouter#BorderRouter#BorderRouter#BorderRouter#showshowshowshow route-maproute-maproute-maproute-map In the output you will see the line “Policy routing matches: 9 packets…”. It means that the route-map we configured is working properly. 实验拓扑：其中 winXP_client 用虚拟机， www 流量用 IE 浏览器产生 R1 配置如下 ： access-list 100 permit tcp any any eq www ! route-map pbr permit 10 match ip address 100 set ip next-hop 10.1.101.2 ! b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ route-map pbr permit 20 ！ interface FastEthernet2/0 ip address 192.168.73.254 255.255.255.0 ip policy route-map pbr duplex auto speed auto 根据答案要求： 4) There is a “Host for Testing”, click on this host to open a box in which there is a button named “Generate HTTP traffic”. Click on this button to generate some packets for HTTP traffic. Jump back to the BorderRouter and type the command “show route-map”. BorderRouter#show route-map In the output you will see the line “Policy routing matches: 9 packets…”. It means that the route-map we configured is working properly. 做完这一步，到 winXP_client 上开网页产生 www 流量后，再回到 R1 上“show route-map”： 意思下吧，只要看到流量就 OK。 3.IPv6IPv6IPv6IPv6 OSPFOSPFOSPFOSPFVirtualVirtualVirtualVirtual LinkLinkLinkLink SimSimSimSim QuestionQuestionQuestionQuestion Acme is a small export company that has an existing enterprise network that is running IPv6 OSPFv3. Currently OSPF is configured on all routers. However, R4′s loopback address (FEC0:4:4) cannot be seen in R1′s IPv6 routing table. You are tasked with identifying the cause of this fault and implementing the needed corrective actions that uses OSPF features and does no change the current area assignments. You will know that you have corrected the fault when R4′s loopback address (FEC0:4:4) can be seen in the routing table of R1. b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ AnswerAnswerAnswerAnswer andandandand Explanation:Explanation:Explanation:Explanation: To troubleshoot the problem, first issue the showshowshowshow running-configrunning-configrunning-configrunning-config on all of 4 routers. Pay more attention to the outputs of routers R2 and R3 The output of the “show running-config” command of R2: The output of the “show running-config” command of R3:

! Ipv6 router ospf 1 Router-id 2.2.2.2 Log-adjacency-changes !

! Ipv6 router ospf 1 Router-id 3.3.3.3 Log-adjacency-changes Area 54 virtual-link 4.4.4.4 !

b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ We knew that all areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0). In some cases, where this is not possible,we can use a virtual link to connect to the backbone through a non-backbone area.The area through which you configure the virtual link is known as a transit area. In this case, the area 11 will become the transit area. Therefore, routers R2 and R3 must be configured with the areaareaareaarea virtual-linkvirtual-linkvirtual-linkvirtual-linkcommand. + Configure virtual link on R2 (from the first output above, we learned that the OSPF process ID of R2 is 1): R2>R2>R2>R2>enableenableenableenable R2#R2#R2#R2#configureconfigureconfigureconfigure terminalterminalterminalterminal R2(config)#R2(config)#R2(config)#R2(config)#ipv6ipv6ipv6ipv6 routerrouterrouterrouter ospfospfospfospf 1111 R2(config-rtr)#R2(config-rtr)#R2(config-rtr)#R2(config-rtr)#areaareaareaarea 11111111 virtual-linkvirtual-linkvirtual-linkvirtual-link 3.3.3.33.3.3.33.3.3.33.3.3.3 (Notice that we have to use neighbor router-id 3.3.3.3, not R2′s router-id 2.2.2.2) + Configure virtual link on R3 (from the second output above, we learned that the OSPF process ID of R3 is 1 and we have to disable the wrong configuration of “area 54 virtual-link 4.4.4.4″): R3>R3>R3>R3>enableenableenableenable R3#R3#R3#R3#configureconfigureconfigureconfigure terminalterminalterminalterminal R3(config)#R3(config)#R3(config)#R3(config)#ipv6ipv6ipv6ipv6 routerrouterrouterrouter ospfospfospfospf 1111 R3(config-rtr)#R3(config-rtr)#R3(config-rtr)#R3(config-rtr)#nononono areaareaareaarea 54545454 virtual-linkvirtual-linkvirtual-linkvirtual-link 4.4.4.44.4.4.44.4.4.44.4.4.4 R3(config-rtr)#R3(config-rtr)#R3(config-rtr)#R3(config-rtr)#areaareaareaarea 11111111 virtual-linkvirtual-linkvirtual-linkvirtual-link 2.2.2.22.2.2.22.2.2.22.2.2.2 We should check the configuration on R4: R4>R4>R4>R4>enableenableenableenable R4#R4#R4#R4#showshowshowshow running-configrunning-configrunning-configrunning-config You will see a wrongly configured virtual-link command. To get full mark we have to disable b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ this command: R4#R4#R4#R4#configureconfigureconfigureconfigure terminalterminalterminalterminal R4(config)#R4(config)#R4(config)#R4(config)#ipv6ipv6ipv6ipv6 routerrouterrouterrouter ospfospfospfospf 1111 R4(config-rtr)#R4(config-rtr)#R4(config-rtr)#R4(config-rtr)#nononono areaareaareaarea 54545454 virtual-linkvirtual-linkvirtual-linkvirtual-link 3.3.3.33.3.3.33.3.3.33.3.3.3 After finishing the configuration don’t forget to ping between R1 and R4 to make sure they work well! Now all the configuration was done. It is weird that we can’t ping the IPv6 loopback interface of R4 (with the ping or ping ipv6 command) but we can check by using the command showshowshowshow ipv6ipv6ipv6ipv6 routerouterouteroute on R1 The copyingcopyingcopyingcopying running-configrunning-configrunning-configrunning-config startup-configstartup-configstartup-configstartup-config command will not work but don’t worry, just skip it. Notice: If you issue the command “show running-config” on R1, you will see these two lines: passive-interfacepassive-interfacepassive-interfacepassive-interface defaultdefaultdefaultdefault nononono passive-interfacepassive-interfacepassive-interfacepassive-interface fa0/0fa0/0fa0/0fa0/0 (fa0/0 is the interface connecting with R2) These two lines make all the interfaces of R1 become passive interfaces except interface fa0/0. They are correctly configured so don’t try to disable them. 该题有两个陷阱 Notice: If you issue the command “show running-config” on R1, you will see these two lines: passive-interface default no passive-interface fa0/0 (fa0/0 is the interface connecting with R2) 这个配置没有问题， 不要在这里纠结 第二个是 virtual-link 配置错误，更正即可。最后实现 R1 和 R4 的 loopback 互相通信： b b s .h h 01 0. c o m ????：http://bbs.hh010.com/ ????：http://book.hh010.com/ OK，实现题目效果。 4.4.4.4. EIGRPEIGRPEIGRPEIGRPStubStubStubStub SimSimSimSim QuestionQuestionQuestionQuestion By increasing the first distant office, JS manufactures has extended their business. They configured the remote office router (R3) from which they can reach all Corporate subnets. In order to raise network stableness and lower the memory usage and broadband utilization to R3, JS manufactures makes use of route summarization together with the EIGRP Stub Routing feature. Another network engineer is responsible for the implementing of this solution. However, in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R