网络系统工程综合实训-某小型校园网规划与设计要点

摘要当今的世界正从工业化社会向信息化社会转变，随着计算机、网络和多媒体等信息技术的飞速发展，信息的传递越来越快捷，信息的处理能力越来越强，信息的表现形式也越来越丰富，对社会经济和人们的生活产生了深刻的影响。现在，随着学校教育手段的现代化，很多学校已经逐渐加紧对信息化教育的规划和建设。开展的校园网络建设，旨在推动学校信息化建设，其最终建设目标是将建设成为一个借助信息化教育和管理手段的高水平的智能化、数字化的教学园区网络，最终完成统一软件资源平台的构建，实现统一网络管理、统一软件资源系统，并实现网络远程教学、在线服务、教育资源共享等各种应用；利用现代信息技术从事管理、教学和科学研究等工作。本次的实训就是设计规划一个小型校园网，通过作需求的分析，并设计画网络拓扑图和IP地址的规划等工作。最终，利用实验室设备和bosonsoftware软件组建一个模拟的小型校园网，并对校园网内的各种互联设备和部门进行综合配置，以了解和熟悉校园网建设的过程。关键词：信息，校园网，网络拓扑，IP地址，bosonsoftware一、 实训题目及设计要求1、 实训题目某小型校园网规划与设计2、 网络设计要求本次实训要求规划的校园网内覆盖五个大楼，分别是教学楼、实验楼、图书馆、办公楼和学生宿舍楼，外与Internet相连接。其具体设计要求如下1） 内网计算机共享两个全局IP地址（和）上Internet。（提示：做NAT动态地址映射）。2） 不同大楼内的客户机划分不同的VLAN以控制广播风暴。3） 办公楼和教学楼的计算机能互相通信。4） 校园内所有计算机都能访问服务器。5） 给校园内各个部门的机器分配内网地址。6） 给校园内的服务器（ftp、www等）分配内网地址，并要求外网用户可以访问。（提示：做NAT静态地址映射，外部地址是和）。7） 教学楼100台机器，实验楼150台机器，图书馆100台机器，办公楼机器100台，学生宿舍600台。8） IP地址规定为B类（172.序号.0.0----172.序号.255.255）或C类（192.168.序号.0---192.168.序号.255）。二、 设计思路分析实训题目及其设计要求可知，五栋大楼其实也就是五个不同的 VLAN了，已经可以控制广播风暴，提高网络的性能。其次，在规划 IP地址、给网络中的设备分配IP地址时，要特别注意每栋楼的主机数，以免发生IP地址不够用或冲突的情况，还有在控制各楼栋间的访问时，要采用ACL的标准访问控制列表。另外，通过NAT网络地址转换还可以实现内部地址到外部地址的转化，在服务器访问外部网络时，可以一对一的转换分配外部的地址。而通过动态地址的转换则可以实现校园网内的所有主机共享两个全局 IP地址（内部合法地址）访问Internet。但由于每栋大楼的主机数都是上百的，在设计时如果把所有主机都连上会比较的麻烦和不实际，所以在设计拓扑图时我就在每栋楼选了两台主机作为代表。以下就是我设计规划的网络拓扑框图：

三、网络设备选型在bosonsoftware软件上画仿真拓扑图时，5台交换机的型号我都选用了3550,路由器R1,R2,R3用了3640,而R4用了2514,下面我们来了解一下这些型号的交换机和路由器。（1）、Catalyst3550系列智能以太网Cisco交换机是一种新型的企业级可堆叠多层交换机，可提供高可用性、可扩展性、安全性和可改进网络运营的管理能力，属于中端产品。现可实现以下内智能服务，如 QoS限速、Cisco安全访问控制列表、多播管理和高性能IP路由选择，并与此同时保持了传统 LAN交换的简便性，这在市场上堪称是首开先河。Catalyst3550内部嵌有Cisco集群管理套件（CMS软件，使用户能使用标准 Web浏览器同时配置多台CatalystCisco交换机并对其进行纠错。CiscoCMS软件提供新配置向导，因而能大大简化综合应用和网络内服务的实施。CiscoCatalyst3550 系列智能以太网交换机包括下列千兆位以太网配置：1）、Catalyst3550-12T交换机10个10/100/1000BaseT端口和2个基于千兆位接口转换器（GBIC千兆位以太网端口；2）、Catalyst3550-12G交换机10个基于GBIC的千兆位以太网端口和2个10/100/1000BaseT端口。（2）、Cisco3600系列是一个适合大中型企业internet服务供应商的模块化、多功能访问平台家族。Cisco3600系列拥有70多个模块化接口选项，提供语音/数据集成、虚拟专网、拨号访问和多协议数据路由解决方案。（3） 、Cisco2500系列路由器提供众多的适用于中小型远程办公室的访问产品，基本特点有：1）、用连接到单个现场路由器上网现有设备实现分支机构与企业 WAN和internet的告诉连接；2） 、有效集成LAN和传统的SNA流量，节省通信开销并便利管理；3）、经济有效地集成以太网和令牌环 LAN4） 、用两个同步串行端口快速传输数据。四、IP地址规划从设计要求来看，本次的实训要求内部网络采用 B类（172.序号.0.0----172.序号.255.255）或C类（192.168.序号.0---192.168.序号.255）地址来规划IP地址。而通过计算五栋大楼共有 1050台主机，如果采用C类地址最多可以容纳的主机数为28-2=254v1050,它所能容纳的主机数远远小于所要求的主机数，所以不能用C类的IP地址。而在采用B类地址时，如果子网掩码是用默认的，可以容纳216-2=65534台主机数远远大于了1050,这样会造成不必要的浪费，而且可用的网络地址也很少，所以子网掩码采用 ，即向主机借4位，这样就在不浪费的前提下解决了网络地址不够用的情况。在各楼栋主机的IP地址规划时我遇到了困难，是请教了同学才划出来的。教学楼主机的起始IP地址为：，由于教学楼共有100台主机，要27=128才能容纳100台主机，所以教学楼的IP地址范围是：〜28。实验楼主机起始IP地址为，由于共有150台主机，要28=256才能容纳150台主机，所以实验楼的IP地址范围是：〜。同样的道理，图书馆、办公楼、学生宿舍的主机也是这样来规划的，图书馆和办公楼的主机数也是 100台，也就是27=128,而学生宿舍的主机600台要210=1024才够。F面的表格便是五栋楼的IP地址的分配情况:名称IP地址分配子网掩码教学楼主机〜28实验楼主机〜图书馆主机〜28办公楼主机〜28学生宿舍主机〜

五、网络设备安装与调试1、网络设备安装从前面的分析，根据我设计规划的网络拓扑框图在 bosonsoftware上画出仿真的拓扑图如下：其各个设备端口的IP地址规划如下表所示:设备端口IP地址掩码默认网关R1S3/0f0/0[fl/0f2/0R2S3/0[f0/0f1/0R3S3/0:S3/1S3/2f0/0f1/0R4rS0e0PC1e0PC2:e0:PC3e0PC4e0PC5:e0PC6reo:PC7e0PC8e0PC9Pe0「PC10e0FTPe0WWWreo:PC13eO2、路由器的配置命令、R1配置命令、R1基本配置Router>enRonter#aonftEnterconfigurationcommandsroneperLinerEndwithCNTL/Z.Router(config)tthostR1R1tconfig)#int83/0R1faonfig-if}#ipadd172,12.96^22^.2^.240.0R1(config-if)#clock,rate6400R1(canfig-if}itnoshut%LIMIT-3—口PDOWN：InterfaceSerial3/CtchangedstatetoTipR1tconfig-if)Hexit%LINK-3-UPDOWN:InterfaceSeriaL3/0,changedstatetodown%LINEPHOTO-3-UPDOWN:Lineprotocolan.InterfaceSfirial3/0rchangedstatetodownR1(config)#intfD/OR1(Mnfig-if}#ipadd173.42.14^.1255-255.240.0R1(config-if1Unoshut%LINK-3-UPDOWN:InterfaceFastEtliernetd/OrchangedstatetoupR1(config-if)ifexitR1(canfig)#intfl/0Rl(aonfig-if^#ipaddR1tconfig-if}Inoshut%LINK-3-UPDQWN:InterfaceFastStliernetl/OPchangedstatetoupR1(config-if^intf2/DR1(canfig-if^ipadd172.42.192^1255.255.24Q.0R1(config-if)#n&shut%LINK-3-UPDOWN:InterfaceFastEtheruet2/0chajigedst&tetoupR1(config-1.f)texitR1(config)#rooterripR1(config-ronter)itnetwork172h42.0Rl(aonfi<j-router)#network.R1(config-router)(network172.42.160.QR1(config-rauter)tnetwork112,42.192.0R1(config-router)#exit2)、R1访问控制列表R1(config}#access-listHl(config)#access-listR1(config}#access-lis七Rl(config}#access-listR1(config}#intfD/0R1(config-if)#ipaccess-groupR1(config-if}#exitRl(config}#access-listR1(config}Waccess-iistBl(config}#access-listR1(config}ttaccess-iistHl(config}#access-li•七R1(config}#intf1/DHl(config-if)#ipaccess-groupR1(config-if}#exitKI(config}#access-listR1(config}#access'listKI(config)#acaess-iistR1(config}#acce3s-lis七R1(config}#intf2/022222denydenydenypermitany172*42.192.00.0.02550.0-C.2550.0.021outdenydenydenydeny172+42.144.0172.42.192«0172.42,176,0permitany2out5550+0・0.2555denydenydenydeny172,42.144.0172.42.160.D172,42.176.0172,42.224.00.0,0.2550.0.0,2550.0,0.2550.0,0*2553outR1(config-if}#ipaccess-groupKI(config-if}带电xit3outR1{config)naccess-list3permitany、R2配置命令、R2基本配置Roater>eiiRc>utertMnttEnterconfigtieation oneper EndwithCNTL/E.Router(config)#hcstH2R2(coofig)fints3/Qadd172.42.128,2255.^55.240.0R2(e^nfig-if}>elockrate6400R2(config-if#noshutiLINlC-3-VPtXXlirInterfaceSeria13/0fcZtajigcdstatetonpR2(ccnfi?-if}fftxit%LIN7-3-UPDCWHrInterfaceSerlal3/Drchangedstatetodown*LINEPROTO-5-tFPDOWN:LineprotocolonIatfitfaoeSerial3/0jchangedat&tetodenmR2(conf19}lintfU/OR2(c^nfig-lf}|ipadd172,42.176.1255.255,240.0R2(config-if)inoshut%LINK-3-UFtXW:InterfaceFastEtJicmetD/Q, statetoupR2(eonfig-if}fexitR2(config}tintfl/0R2(confiG-lf)#lpadd173.U.234.1255.355.540.0U(<»nfig-i£)Inoshut%LINIT-3-UPD0WN:Interfae*FastEth*ms11/0,changedatatetcupR2 texttR2(contigHr^uterripR2(config-renter)Inetwork172.42.126.DR2(Config-Txrater)#network172^2.176.0R2(confiv-ronter)4network172442«221.0R2 renter}#exit、R2的访问控制列表172.42.160・0R2172.42.160・0R2(confiQ)#acaess-list4denyR2(ccnflg}#aace99-list4denyR2(config)#access-list4deny172・42・玄24・D5555R2(confWaccess-lis^4permitanyR2(config)#intf0/0R2(confiQ-if)#ipaccess-flrotip4outR2{config-lf)#exit5deny172-4$.144.C5deny172・42+1召D・05deny172.42.192・05deny172.42.1?«,0550.0.D.2SS5deny172-4$.144.C5deny172・42+1召D・05deny172.42.192・05deny172.42.1?«,0550.0.D.2SS0,0.0.2555R2(config)#acc«93-listR2(confi^}#access-list5permitanyR2(c&Eif fl/0R2(conf#ipaccess-group%IncompletecamniAnd.R2(confi^-if)tipaacess-^rcup5outR2(config-if)#exit、R3配置命令、R3基本配置Router>enRouter・uortft£nt«rconfigurationecnviancU„oneperline.EndwithCNTL/Z»RoQlerfcontig^IhostR333(config)lints^/DH3(confia'if)#ipadd235.235.£40.0H3(conf)<noshuttLINR-3-UPDOWN:Interfac«Seri&l^/O^changedstatetoupR3(confiq-if)R3(conllg)lints3/lR3{config-if)tipaddR3(config-i£j#nashut%LINJC-3-UED0WN:InterfaceSerial3/1^changedstatetoupR3(config-i£)texitfl3(conf19)lints3/^R3(aonfig-if)#ipadd^53T255.0,0R3(conri^-if)fclockrate6400(config-if)tnosh口t%LINK-3-UFDCWN:InterfaceSerial3/2dchangedstatetoupR3(Config-if)#exitLINK-3-UFD0WN:InterfaceSerial3/2rchangedstatetodown%LINEPROTO-5-UFtXMH:LineprotDcolonInterfaceSeri^13/2FChangedstatetodownR3{confIQ)lintr0/0R3{eonfifl-if)#ipAddIT空.42*3空1255^55,2400R3{eonf)fnosmut%LINR-3-UPD0W:InterfacePistEtfteraetO/O,changedst«tetoopH3(contig-if)texitR3(<»nfigltintfl/0H3(confi5-if)»ipadd1",壮"札】FastEthernetl/QjchangodstatstovpFastEthernetl/Qjchangodstatstovp172.42.32h0172x42,64.0172.42.»C,0R3(ccnflg-lf}|uitR3(config)frouterripR3(ccnfifl-routeTltnetworkR3{eanf15-router)<natworkR3(eontiQ-routerJ<netwflrkR3(config-router)#network53,78.0.0R3 ig-rout■巳r)悴亡:Kit、R3静态NAT设置R3(config)#ipnatinsidesourcestatic172,42,32.259^78,1.1H3(口ontig)痒ipnatins1desourcestatia59.,76.84.9R3(config)#intf0/0R3(config-if7)#ipnatinsideR3(config-if}#ejcitR3(config)#intfl/OR3(config-if}#ipnatinsideR3(config-il7}#exitB3(口。口上拌Intis3/2It3(config-if)#ipnatoutsideR3(config-if}#exitR3(config^#exit、R3动态NAT设置R3(config)#ipnatpoolabc59.78,84-159.7e.84.2netmask255,255.0.0R3(config)#aaaess-list6permit172.42・1：28・00・0・127<255R3(config)#ipnatinsidesourcelist6abc%Invalidinputdetectedat'A,marker,R3^config)#ipnatinsidesourcelist6poolabcR3(CQJifig)#ints3/0R3(config-if)#ipnatinsideR3{config-if)#exitR3(config)#!nts3/lR3{config-if)#ipnatinsideRS(config-if)ttexitR3(config)#ints3/^R3(config-if)#ipnatoutsideR3(config-if)#exit、R4配置命令Router>enRouter#acnftEnterconfignrstionconunands,oneperline.EndwithCNTL/Z.Ronter(config)#hostR4R4(config)#lntsOR4(config-if}#ipadd59*78.84-3255.255-0.0R4(config-if}#noshut%LINK-3-UPDOWH:InterfaceSerialO,changedstatetoupR4{config-if)#exitR4{config)ftinteOR4(config-if}#ipadd59*58-1.1255-255.0.0R4(config-if)#noshut%LINK-3-UPDOWN:InterfaceEthernetOfchangedstatetoupR4(canfig-if)#exitR4(config)irouterripR4(config-router}#network59,5B.0.0R4(config-router)#netwcrkR4(config-router}#exit

六、网络测试分析1、各楼栋内部PC机之间的互访、教学楼1)、PC1访问PC2:Apinginging173.42.144Jwith32bytesofdata：fromfromfromfromfromU4.4:bytes=32U4.4：bytes=32fromfromfromfromfromU4.4:bytes=32U4.4：bytes=32172.42-144.4:bytes=32:byte护32:bytfia=32time=60nistime=60nistnne=60mstime=fiOni8time=60msTTL=241TTL=241TTL=241TTL=241TTL=241Packets:Sent=5fReceived=®Lost=Q（04losa}f2）、2）、PC2访问PC1C:>pinqRinging172,42144.3with32byt^aofdata:fromfromfromfromfrom:172,42.144,3:172.U.144.3：172,42.144.3fromfromfromfromfrom:172,42.144,3:172.U.144.3：172,42.144.3：17232.144.3:bytes=32bytes=32byteg=32bytes=32bytes=32titne=€0m3time=£0iD3tiuie=fiOmstime二方Em却time=60insTTL=241TTL=341TT1^241TTL=341TTL=241Packets:Sent=5,Received=5,Lost=0（医loss）r、实验楼、、实验楼、PC3访问PC4C：>pingPinging172.42.16D.4with32bytesofdata：fromfromfromfromfrobytes=32160,4:160-4:bytes=32:bytes=35fromfromfromfromfrobytes=32160,4:160-4:bytes=32:bytes=35：bytea=32172,42,160.4:bytes^=32time=60mstime=60nLStime=6amstiioe=60Da3TTL=241TTL=241TTL=S41TTL=241rr1^241pingstatisticsfor:TOKimateroundtriptinesinnilli-secanda:pingstatisticsfor:TOKimateroundtriptinesinnilli-secanda:Minimum=50msrMaximum=CamsTAverage=55msPackets：Sent=5rReceivied=5tLost=0（DEloss}t、PC4访问PC3172i42.160.3Ringing179^42.160.3vlth32byt4«ofd*t*:H^ply f™ 1-72,42,160.3; ijyte^-32Rftply froa 1*72.42 >160.3: bytei^32Reply fnm t?: by“a37Reply fro* 1*72.41 rISO.3: b/Les^S?Replyfro*172.4?r160.3:bytej-32tiiK"60uTTL^I1、PC4访问PC3172i42.160.3Ringing179^42.160.3vlth32byt4«ofd*t*:H^ply f™ 1-72,42,160.3; ijyte^-32Rftply froa 1*72.42 >160.3: bytei^32Reply fnm t?: by“a37Reply fro* 1*72.41 rISO.3: b/Les^S?Replyfro*172.4?r160.3:bytej-32tiiK"60uTTL^I1TTL-211TTL-241tikK—6Dn3TTL^341伸ueMOiuTTL-241Piw}statisticsfor172.42tl€0.3: Packets:Sent=5,Received"S,Lost-0(04loss)tApproxiMtcroundtriptitocsintillil-«ecotid«:Hiniaua*SDu^Muiutm•召0u<Average■ 55u、图书馆)、PC5访问PC6C:>ping172,42,152・4Pinging172・42・192.4with32bytesofdata:Replyfrom172・42・1_号2・4:R*plyfroa172・42・1爭2・4:Replyfrom172.42.192-4:Replyfrom172・42・192・4:bytes=32byte^"32bytes=32bytes=32time=60iiisTTL=241tiio"宦[JmsTTL^241tiK=60msTTD=241t丄口Le=6DiasTTL=241[Replyfrom172■业仝.192・4:bytes=32time-6DinsTTL^241Pingstatisticsfor172r>42^192.4: Packets:Sent=5,Received=5,Lost=0(0%1qs9>fApproximateroundtriptimesinmilli-seconds:KiEUmmn-SOrosdMa.xiniwi- fAversage-SSns2)、PC6访I可PC5C:>pingi”・4趴】號二Pinalng1?2^42.193,3vltb32bytesofdata:R<rplyfroa112.<2,192.3:Replyfn»H3.42.R<rplyfroa112.<2,192.3:Replyfn»H:Replyfnm172.12,192,3;Replyfrw173-12.193.3：Replyfm172,0,192,3:bytci-32ti*&*6DuTTL*2I1bytea-32tiac^60uTTL-211bytci-32tiae-60uTTL^Hlbytes-3?tiwt"60»*TTL*2<1bytci-32tiw6Ch3TTL-2^1PihQ*ututicjfor； Packetj：sent工5』Received*SfLo»t-0(0*let*)r^nprokiMteronndtriptluitnnilli-secwiKb：Mtnt^ua-50»FHaxihub» 60urAveraijfl-、办公楼1)、PC7访问PC8C：>piDgPinging173.4^,176.4with32byteaatdata:Ely froa 172-42.176.4： hytas-32 tlK-fiQw TTL-S41Ly fn» 172.42.176,41 toytes-32 TTK41ly frw bytes-32 tine-SOu TTL-241Hcply fm 172.<S+17t^i bytes*32 tlkGOu TTL*241fro*173^2,176,4:bytcs=32titoe=&0»TT1^241Pingstatlsttcifor■4t.17<□4: JacketsjSent-3,Received-5,Lost=0(0*1qs*>rAppraxiuteronndtriptineainsi111-secandd:M1H1KW■3ta*^Maximod■60nstJkv«raq«■2)、PC8访冋PC7C:>ping172.42.176■日Pinging11».<2.176・」with32bytesofdAta:■is*lyfrcn172.42.17S.3:lyFtM172・4276lyfrcM173.45.17S.3:lyrroa172h<2a176t3:piyfrcn172.4?.17^.1:bytes-32bytes-33bytes-32trytes^32c::xz&fi£v6£-TTL-?«1TTLii241TTL-241TTL-211TTL-241ringstatlstlcvfor172,42=174.3: PacketJi:Sent■5PReceived■5,5■七■0(Clloss)rApproxiMterouAdtriptlaieatinniiii-lecondLS::Hlnlinm■SGsuv.Maximm■ 60urAver-age■ 53m(5)、学生宿舍1)、PC9访问PC10CimpingPingingwltti32bytesordata-rromrramrroafromfrom172・42,224-4-tiytes^32172・42.224,4t>ytes=32172,42.224,4;byt**=32172b42.224,4;bytes=32172=42.224,4;bytes=32timfe=6OEm^time=€0NistiEM=€DHistihk=€Qhist±Enc=6Qn]sTTL=241TTL^241TTL=241TTL^241TTL=241Packst-a:Sentroximateroundtriptimesinnilli-seconds:MinimiiiDi—50m3PHaximniD—60msirAverage0(0%Loss)r55m22)、PC10访问PC9C：>ptw172.42.22<.3Pingingi72.42+22<,3with32bytesofdata:172.42 ・3172.42.234-3334・$224.3173.42.394・3TTL-241TTXMlTTL^241TTLT41TTL-241|PlngBtiatifltmfor17242^224.3;iroxi&aterotrndltrip ina1111-^eeonrilsjMinlmiJii■5D»sdMajclMcm■奇gs*Avera^■ 55iPacketssS«nt■4Raceiwd3*Lost■0(0*lavs),2、五个大楼间互访(1)、教学楼1)、实验楼访问教学楼C:ApingrPinging172■42-144.3172・42・！_4理■3with32bytesofdata:LecjnestLesliestLeciaestLecjnest;ce<Taes1^tini'ecltimedtimedtimed|Pin^s^a^iseicsfor172匚42■144B3:Paakets:Sent=5rReceivedL=OrLost;=5 (100%Xoss),npirox1ma.t«铲Q©ndtripIblmesinrai11i-secondsiMininram=DmsrMajcimniKL=OmsrAT^erage=Dmsri*T2）、图书馆访问教学楼C:>pingPinging172,42,144,3172・42.144.3with32bytesofdiata:timedtimedtimedtimedtimedout■out■out.OUtr.omt.Ping 七i孚七爭for172,42,144,3：Packets:Sent.=5,Received=0rLost=5 (100%loss>fApprox1maLteround七riptimesinml11i-seconds:Minimom=OznsfMaximum=0msAverage=Ohls3）、办公楼访问教学楼Ci>pll>g172,42.144-3PlhdXnd179.42/144.3With39bytesofcLata;豊66666三=tttttTTL-s-241TTL-241TTL-241TTLw241TTL-241:Plngstatisticsfor172.42,144^3: Packets:S^nt■Received■3,La»t=0(Otiqss)fAppro*1naterGimdtriptlnesinait11i-sc<x>ndls^MlnlaiuBi■StasH艸蠱篡1加皿■SOhcs,Average■4）、学生宿舍访问教学楼172+^2.144・3wi32bytesofaata:timed七imedtimedtlinteciout・out■out■out■out■Pingstatistiasfor172.42Padcets:Sent=5,Rece1ve：<l=O,Loslt=5 (1OO%Loss).Approxima1:eroundtriptimesinmi11i-seconds:Mlnimimi=Ojxls, 14日工Im口in=OhlsfAverage=Oms（2）、实验楼1）、教学楼访问实验楼C:>pt™arPinging173.42.1^0^3with32tvytiesofdata:timed*tinw<iC4nedtifiMdout,◎口七亠©口七■oust*Qtlt亠 Oms.AverageCi>pingPinq\ngtimedtimedtinedtimedout.QUt»out*out.out,0,lo»t3）、办公楼访问实验楼C：>plngPingingwith32bytesofdata：sssss巳巳巳巳巳eeeeeCi>pingPinq\ngtimedtimedtinedtimedout.QUt»out*out.out,0,lo»t3）、办公楼访问实验楼C：>plngPingingwith32bytesofdata：sssss巳巳巳巳巳eeeeexoaououPiruffstatisticsfor172»42.160>3：Packets:Sent=51Received=0fLest=5{100%loss}rApproximateroundtriptinesIn»i111-seconds:Minimum=0msfMaximum=Dms.Aver耳ge=0ms4）、学生宿舍访问实验楼C:>ping172*42*160*3Pingingwith32bytesofdata:timedtimedtimedtimedtimedout«out.out.out.out.2）、图书馆访问实验楼172.42.16D.3with32bytesofdatat（3）、图书馆1）、教学楼访问图书馆C:>pingPingingwith32bytesofdata:Requesttimed。口t.Requesttimedout;.Requesttimedout»Requesttimedout.Requesttimedo口仁.Pingstatisticsfor172.42.192・B:Packets:Sent=5,Received.=01Lost=5(100%loss)rApproximateroundtriptimesinmiHi-seconds!Minimum=Oms,Maximum=0mstAverage=0ms2）、实验楼访问图书馆C：>ping172,42.192,3Pingingwith32bytesofdata:out-out.out・out-out.out・ont.out.Pingstatisticsfor172*42*192*3:PacketrS:Sent—5,Received■0fLost=5(100%loss)FApproximateto口ndtriptimesinmi11i-seconds:Mininnun=0mstMaximum=DmsrAverage=Ohls3）、办公楼访问图书馆Ci>ping172・42・192.3Pinging172.42・1.勺2*詩witb32bytesofdata:Elequesttimedout・Requesttimedout.Reqnesttdmed.out■Requesttimedout・Requesttimedout.Pingstatisticsfor172・42・192.3:Packets:Sent・5FReceived=01Lost■5(100%loss>rApproximateroundtriptime吕inmiHi-seconds:Minimum=0msjMaximum=0msfAverage=0ms

4）、学生宿舍访问图书馆C:>ping172,42,192a3Pinging172.42>192•3Reqee号七timed.out■Request七Im&dout.Requesttiniedout.Reqriesttimedout.RequesttimedOTLt.witTi32 of7“Nt邑:Pingstatisticsfor172,42.192.3:PackersiSent=3fReoeived=0rLost—5{100%loss)tApproximateroundtriptimesinnai11i-secon<is:Minimum■0mstMaximum■OtnstAverage■ 0ms（4）、办公楼1）、教学楼访问办公楼C:>ping172.4^.1^6.3PtiXfino+lift.3with3?bytesOf<1414：R«])Ly )7?.42. Tt|^-?41Rflplyfro«175,42.176.3:bytes-32tme-frQuTTt-241ReplyfttA43.17£r3：byLcd-^2tlkc-^tiDfeaTTL-241R«plyTr»512.4217^.3：byte*-37tiwi-«CrwTTL*?41RepLyfrom172,43.17C.3:byte«-3^ TTL-241Pingstattaticstor1*72,43,174,3： P4ckct*:Sent■5dRe«iveU-5,Lost-0fD* ,Af)t)rex1ndtaroundtriptmj-xinmill-*ac^nd>:UtbXnun■ MaxLklikk-舀Ou*Avera.ye»15ns2）、实验楼访问办公楼C:>pinqPinyinywith32bytesofdata:Re<p].esttiiuecl口口七*Requesttimedout.Requesttimedout»It巳qu亡号tout,Requestout-Pingstatisticsfor172*42 临+3:PacketrS:Sent=5,Received=0,Losr—5 (10口％loss),Approximateroundtriptimesinmilli-aeconds:Minimum=Otns,Maximum=(ZmstAverage=0ms3）、图书馆访问办公楼C:>pingPinging172.42.176-3with32bytesofRecjuestRequestRequestReqnes七Re-qu-ejsttimeciout.timedout#七im总RecjuestRequestRequestReqnes七Re-qu-ejstPingstatisticsfor172,42.176,3:Packets:Sent=5fReceived=0rLost=5 (100%loss}rApproximateroundLtriptimesinmiHi—seconds:Mieiimam=0mstMaximum=OaistAverage乂0ms Received=0fLostC:>pingPinglngout”out.out.out;*out,（5）、学生宿舍1）、教学楼访问学生宿舍C;>pinyPinging172.42,224-3with32C:>pingPinglngout”out.out.out;*out,（5）、学生宿舍1）、教学楼访问学生宿舍C;>pinyPinging172.42,224-3with32bytesofdd.ta;.eqaest:equestrequest、匚qUESt:equesttimedtimedtimedtimedtimed0口上.out;.cut.out;・<3口t；.Pinqstatisticsfor:PackEt;s:Sent=5FReceivied=0rLost=5(100%loss),ApproximateroundtriptimesInmilli^seconds:Minimum=OmstMaximum=0ms』Average=0ms2）、实验楼访问学生宿舍C:>pingrPingin?172.42,224■吕with32bytesofdata:bequest:equewtrequestbequestteqiiesttimedtimedtimedtimedout.out*out*out,o口上*4）、学生宿舍访问办公楼wlth32bytesofdata:timed七imEcltimedt;imedtimed、图书馆访冋学生宿舍C;>ping-Pinging172■热2・22^.3C;>ping-Pingingout・out.out.out.out.172.42*224.3with32bytesout・out.out.out.out.mintedtimedtimedtimedtimed、办公楼访问学生宿舍inystrAtristlesfor17242,224,3:Packets:Sent—51Received■OrLos^t—5 (100%loss>tpproximateroundtrip'times1nmi11i-seconds:Minimum=Dots,MaximumhOms,Average*Qms3、五个大楼访冋服务器、教学楼访问服务器FTP和WWWC：>ping172-42-32,2Pinging172^2,32.2with32bytesofdata:jnfromfromfromtime=60iastinie=60!iLStinie='60m^TTL=241TTL=241TTL=241fromjnfromfromfromtime=60iastinie=60!iLStinie='60m^TTL=241TTL=241TTL=241fromTTL»2«1fFOTitime=60nisTTL=2<1Packets:Sent=5rReceived=5rLost=0(0%loss)rfTWfr<*trwrroa111,42.£4.9:112.0.m.42.£4.2:;fTWfr<*trwrroa111,42.£4.9:112.0.m.42.£4.2:;172.4?,64,2:bYte»"32bytdbytek*32t)yteM~32byter-32titter£0id5tm>50iuTTL-2<1TTL-341TTLViTTL-S<1TTL-3<IFftckot*:S*nt•5rRec4iv«d•Lost”0(Q4Lo»^\,丁:'］「二:說；：：；：朴工::;kjlllllE'：：：；Fftckot*:S*nt•5rRec4iv«d•Lost”0(Q4Lo»^\,55ms55ms、实验楼访冋服务器FTP和WWWCj>ping172.42,32.2Pingimg172,42with32bytesofdata:fromfronifromfromrroxfromfronifromfromrrox172・42.32・2172.42.32・2172・42.32・2172・42m：3殳■富by±es=32toytes=32byt:es-32bytes=32bytes=32time=bOiiLSti]ne=6ttmstime^COnistime=€0®stime=60iasTTL^241TTL-241TTL»241TTH41TTL=241Pmgstatisticsfor172,42,32d: Packets:Sent=Received=3,Lost=0(0%loss}rApproximateroundtriptimesinmi11i-seconds:Mlnimum=50d9.Maxivixun= Averaae=55ms>pin.g179.42■石4亠畫Pinging172,42■石4「2with32bytesofdatai:lylylylyly

P^PPTPfrow.frofiifromfromfrom172-42.64,2:byte9=32172・4lylylylyly

P^PPTPfrow.frofiifromfromfrom172-42.64,2:byte9=32172・42r64■盘當bytes=32172・42■占对.12:bytea-32172.42.64,2;bytes=32172■理2亠右百bytes-32tjme=60ms€13^=601118fLimevCOnistinie=60]MSTTL^241TTL^241TTLw241TTL^241TTL-241fromfromfromfroBfreintime"6Dinstin>e=60n]iS七ih]he-6Did.htime=£0mstimHe—GDiiisfromfromfromfroBfreintime"6Dinstin>e=60n]iS七ih]he-6Did.htime=£0mstimHe—GDiiisPackets:&ent:■51Received.■51Lost.■0(04losg}t55ms*lngstatisticsfor172-42■百4・空： Packets:Sent=5,Recelveil=5*Lost=0(0%loss}rapproximateroundtriptimesiomiHi-seconds:Minimum=50msPMaximum= 60ms.Average=55ms、图书馆访问服务器FTP和WWWC:>piw172.42,32.2Pinging172.42a32・2With32liytesofd^ta:TTL-241TTL=241TTL®241TTL=241TTL-241C：>piWPinging172・42■百4■空with32Bytesofd^ta:fromfromfromfromfrom172・42・64.2:Uytes=32172,42,64.2:bytes=32172-42■&42feytes=32172,42.64.2:bytes=32172tiytes-32TTL=241TT1^241TTL=241TTL=241TTL-241Packe七凸:：S«nt■51Received■5rLost■0 (D4loss)r55ms55ms(4)、办公楼访问服务器FTP和WWWCz>ping172■詣卫「誘罢=2Plnijing172 ・2with52bytesofdata:11-frcmfromfromfrcflifromtiine=£Onijstn&e=60iaiStime-6Dulstiroe=60!asti&ire=6Diaj5TTH*[TTL=241TTL-241TTT41TTL=24LPackets:Sent=5rReceived=5FLost=ID(0%loss),C;>ping172■垃2■五4・2Pingirtg172.42,64B2with32bytesofdata:fromfroflifromfromfrom172.12■石4.2:172,42.64.2:172»42■酉4・Z：172.42^4.2：172.42・64.12:bytes®32bytes=32bytes=32bytes«32bytes=32tin>e=6DmstiEie=60mistiiUfe=6DiiLStiiae=i5DEistlEQre=60DliSTTL-241TT1^241TTL=241TTIj-241TTL=24155ms(5)、学生宿舍访问服务器FTP和WWWC:>ping172.42,32,2Pinging172.42・32.2with32bytesofdata:tromfrc®fromfroaiifrom172-42.32.2:172.42+32.2s172,42,32.2:172・42.32・2：172.42.32・2:bytes-32bytes=32bytes=32bytea=32bytes-32time^SOaisitiine='i£DvLstii»e=60nii3tiine=&OjfistiiftiE-GOnasTTJLY41TTL^241TTL=241TTL=241TTL-241Pirmstatisticsfor172.42,32\2: Packets:Sent=5,Received=5rLost=u(0%loss)TApproxiioateroundtripticoesinml111-seconds:Miniunuia.■5Dins.Majc.imimD■6DmsfAverage■55msC^>ping172.42-642Pinging172・4:2・64.2with32bytesofdata:mplyxplyfromfrouufromfromfrom172・42.64.2172,42.64.3172.42,64-2172.42™64-2172-42.64.2bytes-32bytes=32bytes=32bytes=32bytea^32timewbOiiLSti!P>e=6OiiLStime=60oostime=60nL25time-60msTTL-241TTL=241TTL=24LTTL=241TTL-241Packets:Sent=5,Received=5rLost=0(0%Lass),4、五个大楼和服务器与internet 的连接(1)、教学楼与internet连接Coping59■百8・1・2PingiTiig59.59.1,2with32bytesofdata:Replyfrom厅9・58,1・Replyfrom厅9・58,1・2:Replyfrom:bytes=32byte>=32time=60nisTTL=241tiwe=60wsTTL=241FbeplyfromReplyfromReplyfrombytes*32bytes=32bytes=32FbeplyfromReplyfromReplyfrombytes*32bytes=32bytes=32Pingstatistiesfor勺:9・刁&・1・22 Packets:Sent=5PReceived=5rLost=0(0%loss)fApproximateroundtriptimesinmiHi-seconds:Minimimi■SOhlsrMaximuni■6DmstAverage■55ms、实验楼与internet连接C:>ping92■巧窟・]L・2Pinging5曹■百&・1・2with32bytesofdata.:Replyfrom59,58,1,2:Iwtesf=32tio)e=60ixisReplyfrom;tjytea«32t*me=EDinsReplyfrom59.58-la2:liytesw32time=6DinsReplyfroin59・5S.1・2：Bytes=32tlaie=6DiiisReplyfromi:bytes=32time=60]iisTTL^241TTL-24JTTL«241TTL=241TTL=241Pingsstatistic-sfor厅乡・58,1・2: Paalkets:Sent=5PReceived=5PLost=0(0%loss}fApproximateroundtriptinesinmi111-seconds:Minimum■SOhlsrMaximum■60mstAverage■55ms、图书馆与internet连接C:>ping59hSB・1»2Pin-ging59u56a1・2with32bytresofda.ta:ReplyReplyReplyRepXyReplyfromfromfromfrontfromtime^EDinstiiw石muReplyReplyReplyRepXyReplyfromfromfromfrontfromtime^EDinstiiw石mu』tinie^SOiiLatime^EiQiiLs14106=601113TTL-241TTL-241TTL-241TTL-241TTL=241Pingstatisticsfor59^58.142; Packets:Sent=5tReceived=5,Lost=0<0%loss),9Approximateroiandtriptildesinmi11i-seconds:Minimum=50mstMsjcimwn=60msPAverage=55nis、办公楼与internet连接C:>ping59.58.1・2Pinging59»58»1-2with32bytesofda.ta.itinke=60]iLSTTL=241ti!i>e=60insTTL^241Replyfrom厅9・58・1・2:bytes=32tinke=60]iLSTTL=241ti!i>e=60insTTL^241Replyfrow59,58,1B2:bytes=32Replyfrom59a58□Replyfrom59a58□1・2Ebytes—SSReplyfrom.9今・£8・i■空：bytres=32Replyfrom59,58,1・2:bytesr=32tib>s~6Om3TTL®241tiELLe=fiOmsTTL=241time=60asTTL=241Pingstatisticsror39.58.1・2: Packets:Sent=5rReceived=5*Lost=□(0%loss)fApproximateroundtriptimesinmiHi-seconds:MiniiEr™=SOpis,MaxinwL=60ws,Averagpe=55ms、学生宿舍与internet连接C:>pmg占今■呂&・1・2Pinging59・5i8・l・2with32bytesofdata:ISEfroinfromfrom上raufrom59-58.1.2;bytes=3259»58x1a2sliy七esa3259a30.1a2；l^ytes=32T9・58.1ISEfroinfromfrom上raufrom59-58.1.2;by