- 1、本文档共34页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
TheIS-ISProtocolPerformingIS-ISRoutingOperations
OSIAddressesOSInetworklayeraddressingisimplementedwithNSAPaddresses.AnNSAPaddressidentifiesasystemintheOSInetwork;anaddressrepresentsanentirenode,notaninterface.VariousNSAPformatsareusedinvarioussystems,
becausedifferentprotocolsmayusedifferentrepresentationsofNSAP.NSAPaddressesareamaximumof20bytes:Higher-orderbitsidentifytheinterareastructure.Lower-orderbitsidentifysystemswithinarea.
IntegratedIS-ISNSAPAddressStructureTheCiscoimplementationofIntegratedIS-ISdistinguishesonlythefollowingthreefieldsintheNSAPaddress:Areaaddress:Variable-lengthfield(1to13octets)
composedofthehigher-orderNSAPoctets,excludingsystemID
andNSEL.SystemID:ESorISidentifierinanarea;fixedlength
ofsixoctetsinCiscoIOSsoftware.NSEL:OneoctetNSAPselector,serviceidentifier.TotallengthofNSAPisfrom8(minimum)to20octets(maximum).
TypicalNSAPAddressStructureThesimplestNSAPformatusedbymostcompaniesrunningIS-ISastheirIGPisasfollows:Areaaddress(mustbeatleast1byte)AFIsetto49Locallyadministered;thus,youcanassignyourownaddresses.AreaIDTheoctetsoftheareaaddressaftertheAFI.SystemIDCiscoroutersrequirea6-bytesystemID.NSELAlwayssetto0forarouter.
IdentifyingSystemsinIS-IS:AreaAddressTheareaaddressuniquelyidentifiestheroutingarea,andthesystemIDidentifies
eachnode.Allrouterswithinanareamustusethesameareaaddress.AnESmaybeadjacent
toarouteronlyiftheyshareacommon
areaaddress.AreaaddressisusedinLevel2routing.
IdentifyingSystemsinIS-IS:SystemIDSystemIDintheaddressusedtoidentifytheIS;itisnotjustaninterface.Ciscosupportsonlya6-bytesystemID.SystemIDisusedinLevel1routingandhastobeuniquewithin
anarea.SystemIDhastobeuniquewithinLevel2routersthatformtheroutingdomain.Generalmendation:use
您可能关注的文档
- 系列产品指南食谱2013florabella muse photoshop actions动作.pdf
- 迅诊移动健康管理.pptx
- 介绍技术通讯ed 01 omnipcx tc1310en.pdf
- benz kids tennis creatives proposal-0614 final2014奔驰儿童网球创意提案决赛.pptx
- council-2012 security for cloud computing 10 steps to ensure cess云计算安全确保顺利进行个步骤.pdf
- MRR系列磁栅尺读数头用户手册.pdf
- G32A1465 产品简介中文.pdf
- MH0系列磁栅尺读数头用户手册.pdf
- 随机性信号检测.pdf
- AHT20温湿度传感器说明书中文版C0-202407.pdf
- AN024_星历原始观测数据协议.pdf
- APM32F051x6x8数据操作说明 V1.6中文.pdf
- AN1086_APM32F4xx_ISP应用笔记中文.pdf
- APM32F051R8 EVAL Board使用调试操作说明V1.0中文.pdf
- APM32F4xxx用户操作说明 V2.2中文.pdf
- APM32F411xCxE 数据操作说明 V1.3中文.pdf
- AN019_NMEA0183协议说明_北云科技.pdf
- AGP21系列电容式薄膜真空规说明书 A1-20240628.pdf
- AHT40温湿度传感器说明书中文版 A1-202406.pdf
- AN1096_APM32F035_HvMOTOR EVAL无感矢量控制方案_V1.1中文.pdf
文档评论(0)