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1、ChinaCacheNexus7000操作交流Nov.2013LixueningConfigurationFundamentalsCiscoNX-OSandCiscoIOSSoftwareDifferencesInCiscoNX-OS:WhenyoufirstlogintotheNX-OS,yougodirectlyintoEXECmode.Bydefault,theadminuserhasnetwork-adminrightsthatallowfullread/writeaccess.TheCisc
2、oNX-OSusesafeaturebasedlicensemodel.TheCiscoNX-OShastheabilitytoenableanddisablefeaturessuchasOSPF,BGP,etc…usingthefeatureconfigurationcommand.Configurationandverificationcommandsarenotavailableuntilyouenablethespecificfeature.Interfacesarelabeledinthec
3、onfigurationasEthernet.Therearen’tanyspeeddesignations.TheCiscoNX-OSsupportsVirtualDeviceContexts(VDCs),whichallowaphysicaldevicetobepartitionedintologicaldevices.Whenyoulogintotheconsoleport,youareinthedefaultVDC(VDC1).TheCiscoNX-OShastwopreconfiguredV
4、RFinstancesbydefault(management,default).ThemanagementVRFisappliedtothesupervisormoduleout-of-bandEthernetport(mgmt0),andthedefaultVRFinstanceisappliedtoallotherI/OmoduleEthernetports.Themgmt0portistheonlyportpermittedinthemanagementVRFinstanceandcannot
5、beassignedtoanotherVRFinstance.CiscoNX-OSandCiscoIOSSoftwareDifferencesSSHv2server/clientfunctionalityisenabledbydefault.TELNETserverfunctionalityisdisabledbydefault.(TheTELNETclientisenabledbydefaultandcannotbedisabled.)VTYandAuxiliaryportconfiguration
6、sdonotshowupinthedefaultconfigurationunlessaparameterismodified(TheConsoleportisincludedinthedefaultconfiguration).TheVTYportsupports32simultaneoussessionsandthetimeoutisdisabledbydefaultforallthreeporttypes。TheConsoleandVTYportsalwaysprompttheuserforau
7、sername/passwordpairforauthenticationbeforegrantingaccesstotheCLI.TheCiscoIOSappliesthelogincommandtotheConsoleandVTYportsbydefaulttoenablepasswordauthentication(Ifthenologincommandisapplied,ausercangainaccesswithoutapassword.).Ausercanexecuteshowcomman
8、dsinconfigurationmodewithoutusingthedocommandasinCiscoIOSSoftware.Whenexecutingashowcommand,auserhasseveralmoreoptionswhenusingthepipe(
9、)optionsuchasgrepforparsingtheoutput,perlforactivatingascript,andxmltoformattheoutputfornetwo
