CM TS常见问题及解决办法

1 TroubleshootinguBRCableModemsNotComingOnline 北京四达时代通讯网络技术有限公司2001年5月 2 CableModem系统组成 3 常用工具 ShowcablemodemDebugcable modemmaclogverbosePingx x x x 4 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init r1 281312 002010 1 1 220050 7366 1e01Cable2 0 U07offline28100 252010 1 1 200030 96f9 65d9 offline Cablemodemconsideredofflineinit r1 Cablemodemsentinitialranginginit r2 Cablemodemisranginginit rc Cablemodemrangingcompleteinit d Dhcprequestreceivedinit i Dhcpreplyreceived IPaddressassignedinit t TODexchangestartedinit o Optionfiletransferstartedonline Cablemodemregistered enabledfordata 5 ubr7246r Debugcable modemmaclogverbose1d16h 146585 940CMAC LOG CONFIG FILE TFTP FAILED 11d16h 146585 940CMAC LOG CONFIG FILE PROCESS COMPLETE1d16h 146585 944CMAC LOG RESET CONFIG FILE READ FAILED1d16h 146585 944CMAC LOG STATE CHANGEreset interface state1d16h 146585 944CMAC LOG STATE CHANGEreset hardware state Debugcable modemmaclogverbose 6 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE HFC 简化的系统图 7 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 0 Poweron HFC CMOffline 状态 初始状态 8 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 1 RangingProcess HFC CablemodemsentinitialrangingCablemodemisrangingCablemodemrangingcomplete 状态 请求应答过程 9 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init r1 281312 002010 1 1 220050 7366 1e01Cable2 0 U07init r2 28100 252010 1 1 200030 96f9 65d9Cable2 0 U08init rc 28120 252010 1 1 230030 96f9 65da 10 常见问题 回传链路损耗太大 11 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 2 DHCPDiscover CMTS HFC Dhcpreplyreceived Dhcprequestreceived IPaddressassigned 状态 请求应答过程 12 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init d 281312 002010 1 1 220050 7366 1e01Cable2 0 U07init d 28100 252010 1 1 200030 96f9 65d9Cable2 0 U08init d 28120 252010 1 1 230030 96f9 65da 13 常见问题 Missingcablehelper addresscommandontheCMTSorincorrectIPConnectivityissuefromtheCMTStotheDHCPserverDHCPserverdownWrongdefaultgatewayconfiguredattheDHCPserverLowtransmitpowerattheCMorlowupstreamSNR DHCPserveroverloadDHCPserverisoutofIPaddresses 14 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init i 281312 002010 1 1 220050 7366 1e01Cable2 0 U07init i 28100 252010 1 1 200030 96f9 65d9Cable2 0 U08init i 28120 252010 1 1 230030 96f9 65da 15 常见问题 IncorrectorinvalidDOCSISfilespecifiedintheDHCPserverTFTPserverissues forexampleincorrectipaddress TFTPserverunreachableProblemsgettingTODorTimingOffsetIncorrectRoutersettingintheDHCPconfiguration 16 ubr7246r Debugcable modemmaclogverbose3d20h 334415 496CMAC LOG DHCP COMPLETE3d20h 334415 508CMAC LOG STATE CHANGEestablish tod state3d20h 334415 512CMAC LOG TOD REQUEST SENT172 17 110 1363d20h 334415 524CMAC LOG TOD REPLY RECEIVED31783433183d20h 334415 524CMAC LOG TOD COMPLETE3d20h 334415 528CMAC LOG STATE CHANGEsecurity association state3d20h 334415 528CMAC LOG SECURITY BYPASSED3d20h 334415 528CMAC LOG STATE CHANGEconfiguration file3d20h 334415 528CMAC LOG LOADING CONFIG FILEnofile3d20h 334416 544CMAC LOG CONFIG FILE TFTP FAILED 13d20h 334416 548CMAC LOG CONFIG FILE PROCESS COMPLETE3d20h 334416 548CMAC LOG RESET CONFIG FILE READ FAILED Debugcable modemmaclogverbose 17 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 3 TODExchange CMTS HFC TODexchangestarted 状态 请求应答过程 18 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init t 281312 002010 1 1 220050 7366 1e01Cable2 0 U07init t 28100 252010 1 1 200030 96f9 65d9Cable2 0 U08init t 28120 252010 1 1 230030 96f9 65da 19 常见问题 ProblemsgettingTODorTimingOffsetIncorrectRoutersettingintheDHCPconfiguration 20 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 4 OptionfileTransfer CMTS HFC OptionfiletransferstartedCMreceiveoptionfile 状态 请求应答过程 21 Showcablemodem ubr7246r showcablemodemInterfacePrimOnlineTimingRecQoSCPEIPaddressMACaddressSidStateOffsetPowerCable2 0 U05offline22870 002010 1 1 250050 7366 2223Cable2 0 U06init o 281312 002010 1 1 220050 7366 1e01Cable2 0 U07init o 28100 252010 1 1 200030 96f9 65d9Cable2 0 U08init o 28120 252010 1 1 230030 96f9 65da 22 常见问题 Incorrect corrupt forexample ASCIIinsteadofbinary ormissingDOCSISconfigurationfileUnabletoreachtheTFTPserver eitherisunavailable toobusyornoIPconnectivityInvalidormissingConfigurationParametersinDOCSISfileWrongfilepermissionsontheTFTPserver 23 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 5 OnLine CMTS HFC Cablemodemregisteredenabledfordata 状态 请求应答过程 24 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE 6 CPER Raddress CMTS HFC ReplyforCPE address 状态 请求应答过程 25 DHCPTFTPTODServers H L Upconvert MCNSUp MCNSdown IPNetworkAccess CM CPE CMTS HFC Let sgointernet 状态 complete 26 Showcablemodem ubr7246r showcabl