Cisco Systems uBR924 Manual de usuario

Troubleshooting Tips for the Cisco uBR924 Cable Access Router 1Troubleshooting Tips for the Cisco uBR924 Cable Access RouterFeature SummaryThis docum

Step 2—Connect to the Cisco uBR92410Cisco IOS Release 12.0(5)T.Step 2—Connect to the Cisco uBR924Telnet to the IP address assigned to the cable interf

Step 3—Display the Cisco uBR924’s MAC Log File Troubleshooting Tips for the Cisco uBR924 Cable Access Router 11Step 3—Display the Cisco uBR924’s MAC L

Step 3—Display the Cisco uBR924’s MAC Log File12Cisco IOS Release 12.0(5)T508144.390 CMAC_LOG_WILL_SEARCH_SAVED_DS_FREQUENCY 699000000508145.540 C

Step 4—Interpret the MAC Log File and Take Action Troubleshooting Tips for the Cisco uBR924 Cable Access Router 13508178.318 CMAC_LOG_RNG_REQ_QUEUED

Step 4—Interpret the MAC Log File and Take Action14Cisco IOS Release 12.0(5)TEvent 1—Wait for the Link to Come UpWhen the Cisco uBR924 cable access ro

Step 4—Interpret the MAC Log File and Take Action Troubleshooting Tips for the Cisco uBR924 Cable Access Router 15The search table is arranged so that

Step 4—Interpret the MAC Log File and Take Action16Cisco IOS Release 12.0(5)TEvent 5—Establish IP Connectivity After ranging is complete, the cable i

Step 4—Interpret the MAC Log File and Take Action Troubleshooting Tips for the Cisco uBR924 Cable Access Router 17Event 8—Transfer Operational Parame

Step 5—Use Additional Troubleshooting Commands18Cisco IOS Release 12.0(5)TEvent 11—Enter the Maintenance StateAs soon as the Cisco uBR924 has success

Step 5—Use Additional Troubleshooting Commands Troubleshooting Tips for the Cisco uBR924 Cable Access Router 19Command ReferenceThis section describes

Related Features and Technologies2Cisco IOS Release 12.0(5)TNote The Cisco uBR924 cable access router is typically configured at the headend. Most cab

show controllers cable-modem20Cisco IOS Release 12.0(5)Tshow controllers cable-modemTo display high-level controller information about a Cisco uBR924

show controllers cable-modem Troubleshooting Tips for the Cisco uBR924 Cable Access Router 21ExamplesFollowing is sample output for the show controlle

show controllers cable-modem22Cisco IOS Release 12.0(5)T ehdr: 01 06 02 74 34 11 01 status=0x00 bd_index=0x0001 len=0x0000 hdr_len=0x0000 eh

show controllers cable-modem Troubleshooting Tips for the Cisco uBR924 Cable Access Router 23data mcfilter MAC control filter for data.DS Downstream B

show controllers cable-modem24Cisco IOS Release 12.0(5)TTX PD ring: tx_head_pd tx_tail_pd ehdrIndicates the memory location of the beginning of b

show controllers cable-modem Troubleshooting Tips for the Cisco uBR924 Cable Access Router 25Related CommandsCommand Descriptionshow controllers cable

show controllers cable-modem bpkm26Cisco IOS Release 12.0(5)Tshow controllers cable-modem bpkmTo display information about the baseline privacy key ma

show controllers cable-modem bpkm Troubleshooting Tips for the Cisco uBR924 Cable Access Router 27Table 3 describes the fields shown in the display.Re

show controllers cable-modem des28Cisco IOS Release 12.0(5)Tshow controllers cable-modem desTo display information about the Data Encryption Standard

show controllers cable-modem des Troubleshooting Tips for the Cisco uBR924 Cable Access Router 29Command HistoryExamplesDES engine registers are displ

Related Documents Troubleshooting Tips for the Cisco uBR924 Cable Access Router 3PrerequisitesIn order to use the Cisco uBR924 cable access router for

show controllers cable-modem des30Cisco IOS Release 12.0(5)TRelated Commandsds_unencrypted_length Specifies the number of bytes that will be unencrypt

show controllers cable-modem filters Troubleshooting Tips for the Cisco uBR924 Cable Access Router 31show controllers cable-modem filtersTo display th

show controllers cable-modem filters32Cisco IOS Release 12.0(5)TExamplesMAC and SID filter information is displayed in the following example:uBR924# s

show controllers cable-modem filters Troubleshooting Tips for the Cisco uBR924 Cable Access Router 33Related CommandsMinislots per request Length of e

show controllers cable-modem lookup-table34Cisco IOS Release 12.0(5)Tshow controllers cable-modem lookup-tableTo display the mini-slot lookup table in

show controllers cable-modem lookup-table Troubleshooting Tips for the Cisco uBR924 Cable Access Router 35ExamplesThe mini-slot lookup table is displa

show controllers cable-modem lookup-table36Cisco IOS Release 12.0(5)T370: 3C 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B 4B380: 4B 4B 4B 4B 4B 4B

show controllers cable-modem lookup-table Troubleshooting Tips for the Cisco uBR924 Cable Access Router 3788: 07BC 07BC 07BC 07BC 07BC 07BC 07BC 07

show controllers cable-modem mac38Cisco IOS Release 12.0(5)Tshow controllers cable-modem macTo display detailed MAC-layer information for a Cisco uBR9

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 39Example 1The following sample display shows the MAC l

List of Terms4Cisco IOS Release 12.0(5)T— Cisco Flash MIB— Bridge MIB— IF MIB— MIB-II• Cisco VoIP MIBs: — Cisco Voice IF MIB— Cisco Voice Dial-Control

show controllers cable-modem mac40Cisco IOS Release 12.0(5)T00:14:32: 872.856 CMAC_LOG_RANGING_SUCCESS 00:14:32: 872.874 CMAC_LOG_STATE_CHANGE dhcp

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 41Example 2MAC error log information is displayed in th

show controllers cable-modem mac42Cisco IOS Release 12.0(5)TThe following example indicates that an event in the cable interface driver caused the int

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 43CMAC_LOG_RESET_SERVICE_NOT_AVAILABLEThe CMTS has fail

show controllers cable-modem mac44Cisco IOS Release 12.0(5)TExample 4The following example display for the show controllers cable-modem 0 mac hardwar

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 45TX BD ring with 8 entries at 0x201FB8, tx_count = 0

show controllers cable-modem mac46Cisco IOS Release 12.0(5)Tburst profiles: profile 0: 01 19 1D 00 00 00 00 00 00 00 00 00 00 00 00 00

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 47Example 5The show controllers cable-modem mac state c

show controllers cable-modem mac48Cisco IOS Release 12.0(5)TBurst Descriptor 0: Interval Usage Code: 1 Modulation Type: 1 Differenti

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 49 COS 1: Assigned SID: 5 Max Downstr

List of Terms Troubleshooting Tips for the Cisco uBR924 Cable Access Router 5Cable Modem Termination System (CMTS)—A termination system located at the

show controllers cable-modem mac50Cisco IOS Release 12.0(5)TDS Symbol Rate Downstream frequency in symbols per second.DS QAM Mode Downstream modulatio

show controllers cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 51 Maximum Burst Size Maximum number of mini-slots th

show controllers cable-modem mac52Cisco IOS Release 12.0(5)TRelated CommandsRanging Backoff End Final back-off window for initial ranging contention,

show controllers cable-modem phy Troubleshooting Tips for the Cisco uBR924 Cable Access Router 53show controllers cable-modem phyTo display the conten

show controllers cable-modem phy54Cisco IOS Release 12.0(5)T ldsft=B0EE ldsnre=0098AF ldif=0D004E ldbbi=00000000ldbbq=00000000 ldali=032E00

show controllers cable-modem phy Troubleshooting Tips for the Cisco uBR924 Cable Access Router 55Related CommandsCommand Descriptionshow controllers c

show controllers cable-modem tuner56Cisco IOS Release 12.0(5)Tshow controllers cable-modem tunerTo display the settings for the upstream and downstrea

show controllers cable-modem tuner Troubleshooting Tips for the Cisco uBR924 Cable Access Router 57Table 9 Show Controllers Cable-Modem Tuner Field De

show controllers cable-modem tuner58Cisco IOS Release 12.0(5)TDebug CommandsThe following debug commands are available to troubleshoot a Cisco uBR924

debug cable-modem bpkm Troubleshooting Tips for the Cisco uBR924 Cable Access Router 59debug cable-modem bpkmTo debug baseline privacy information on

List of Terms6Cisco IOS Release 12.0(5)TMAC layer—Media Access Control sublayer. Controls access by the cable access router to the CMTS and to the ups

debug cable-modem bpkm60Cisco IOS Release 12.0(5)TRelated CommandsCommand Descriptiondebug cable-modem bridge Debugs bridge filter processing informat

debug cable-modem bridge Troubleshooting Tips for the Cisco uBR924 Cable Access Router 61debug cable-modem bridgeUse the debug cable-modem bridge comm

debug cable-modem bridge62Cisco IOS Release 12.0(5)TRelated CommandsCommand Descriptiondebug cable-modem bpkm Debugs baseline privacy information on a

debug cable-modem error Troubleshooting Tips for the Cisco uBR924 Cable Access Router 63debug cable-modem errorUse the the debug cable-modem error com

debug cable-modem error64Cisco IOS Release 12.0(5)TRelated CommandsCommand Descriptiondebug cable-modem bpkm Debugs baseline privacy information on a

debug cable-modem interrupts Troubleshooting Tips for the Cisco uBR924 Cable Access Router 65debug cable-modem interruptsTo debug Cisco uBR924 interru

debug cable-modem interrupts66Cisco IOS Release 12.0(5)TRelated CommandsCommand Descriptiondebug cable-modem bpkm Debugs baseline privacy information

debug cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 67debug cable-modem macTo troubleshoot the Cisco uBR924 MAC layer,

debug cable-modem mac68Cisco IOS Release 12.0(5)TExamplesExample 1This example shows sample display output from the debug cable-modem mac log command.

debug cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 690 events dropped due to lack of a chunkThe line “0 events droppe

List of Terms Troubleshooting Tips for the Cisco uBR924 Cable Access Router 7CMTS to Cable Modem Network TopologyFigure 1 shows the physical relations

debug cable-modem mac70Cisco IOS Release 12.0(5)TIn addition, transmitted REG-REQs are displayed in hex dump format. The output from this command is v

debug cable-modem mac Troubleshooting Tips for the Cisco uBR924 Cable Access Router 71*Mar 7 01:44:06: Preamble Value Offset - 0*Mar 7 01:44

debug cable-modem mac72Cisco IOS Release 12.0(5)T*Mar 7 01:44:20: MAC MANAGEMENT MESSAGE HEADER*Mar 7 01:44:20: DA - 00

debug cable-modem map Troubleshooting Tips for the Cisco uBR924 Cable Access Router 73debug cable-modem mapTo display the timing from MAP messages to

debug cable-modem map74Cisco IOS Release 12.0(5)TRelated CommandsCommand Descriptiondebug cable-modem bpkm Debugs baseline privacy information on a Ci

Step 1—Understand How Basic Initialization Works8Cisco IOS Release 12.0(5)TTroubleshooting StepsTo troubleshoot a malfunctioning cable modem, perform

Step 1—Understand How Basic Initialization Works Troubleshooting Tips for the Cisco uBR924 Cable Access Router 9Figure 2 Cable Modem Initialization Fl