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Cisco Systems UBR904 инструкция обслуживания

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Похожие руководства по эксплуатации

Хорошее руководство по эксплуатации

Законодательство обязывает продавца передать покупателю, вместе с товаром, руководство по эксплуатации Cisco Systems UBR904. Отсутствие инструкции либо неправильная информация, переданная потребителю, составляют основание для рекламации в связи с несоответствием устройства с договором. В законодательстве допускается предоставлении руководства в другой, чем бумажная форме, что, в последнее время, часто используется, предоставляя графическую или электронную форму инструкции Cisco Systems UBR904 или обучающее видео для пользователей. Условием остается четкая и понятная форма.

Что такое руководство?

Слово происходит от латинского "instructio", тоесть привести в порядок. Следовательно в инструкции Cisco Systems UBR904 можно найти описание этапов поведения. Цель инструкции заключается в облегчении запуска, использования оборудования либо выполнения определенной деятельности. Инструкция является набором информации о предмете/услуге, подсказкой.

К сожалению немного пользователей находит время для чтения инструкций Cisco Systems UBR904, и хорошая инструкция позволяет не только узнать ряд дополнительных функций приобретенного устройства, но и позволяет избежать возникновения большинства поломок.

Из чего должно состоять идеальное руководство по эксплуатации?

Прежде всего в инструкции Cisco Systems UBR904 должна находится:
- информация относительно технических данных устройства Cisco Systems UBR904
- название производителя и год производства оборудования Cisco Systems UBR904
- правила обслуживания, настройки и ухода за оборудованием Cisco Systems UBR904
- знаки безопасности и сертификаты, подтверждающие соответствие стандартам

Почему мы не читаем инструкций?

Как правило из-за нехватки времени и уверенности в отдельных функциональностях приобретенных устройств. К сожалению само подсоединение и запуск Cisco Systems UBR904 это слишком мало. Инструкция заключает ряд отдельных указаний, касающихся функциональности, принципов безопасности, способов ухода (даже то, какие средства стоит использовать), возможных поломок Cisco Systems UBR904 и способов решения проблем, возникающих во время использования. И наконец то, в инструкции можно найти адресные данные сайта Cisco Systems, в случае отсутствия эффективности предлагаемых решений. Сейчас очень большой популярностью пользуются инструкции в форме интересных анимаций или видео материалов, которое лучше, чем брошюра воспринимаются пользователем. Такой вид инструкции позволяет пользователю просмотреть весь фильм, не пропуская спецификацию и сложные технические описания Cisco Systems UBR904, как это часто бывает в случае бумажной версии.

Почему стоит читать инструкции?

Прежде всего здесь мы найдем ответы касательно конструкции, возможностей устройства Cisco Systems UBR904, использования отдельных аксессуаров и ряд информации, позволяющей вполне использовать все функции и упрощения.

После удачной покупки оборудования/устройства стоит посвятить несколько минут для ознакомления с каждой частью инструкции Cisco Systems UBR904. Сейчас их старательно готовят или переводят, чтобы они были не только понятными для пользователя, но и чтобы выполняли свою основную информационно-поддерживающую функцию.

Содержание руководства

  • Страница 1

    Troubleshooting Tip s for the Cisco uBR904 Cable Modem 1 T roub leshooting Tips f or the Cisco uBR904 Cab le Modem The follo wing sections are pro vided: • Feature Summary on page 1 • Prerequisites on page 3 • Supported MIBs and RFCs on page 3 • CMTS to Cable Modem Network T opology on page 4 • T roub leshooting Tips on page 5 • Command[...]

  • Страница 2

    Feature Summary 2 Release 11.3(4)NA List of T erms CA TV —Originally stood for Community Antenn a T elevision. CA TV now refers to an y cable (coaxial/fiber) based system that pro vides television services. Cable modem —Any de vice that modulat es and demodulates digital da ta onto a CA TV plant. Cable rout er — A modular chassis-based router[...]

  • Страница 3

    List of Terms Troubleshooting Tip s for the Cisco uBR904 Cable Modem 3 Prerequisites Cisco IOS Release 11.3(4)NA or l ater must be running inside the cable modem. Enter the show version EXEC comm and to display the softw are version le vel. Suppor ted MIBs and RFCs The Cisco uBR904 cable modem supports the following: • Radio Frequency Interf ace [...]

  • Страница 4

    CMTS to Cable Modem Network Topol ogy 4 Release 11.3(4)NA CMTS to Cable Modem Netw ork T opolog y Figure 1 shows the ph y sical relationship between the devices in the HFC network and the cable modem. Figure 1 Sample T opolog y IP-related ATM, FDDI, 100BT... 100BT Analog TV Digital TV Upconvertor ISP @ home... DS-RF 54-860 Mhz Fiber Transceiver 80 [...]

  • Страница 5

    Understand How Basic I nitialization Works Troubleshooting Tip s for the Cisco uBR904 Cable Modem 5 T r oubleshooting Tips Perform the following steps to troubleshoot a cable modem: • Step 1—Understand How Basic Initialization W orks • Step 2—Connect to the Cable Modem • Step 3—Display the Cable Modem’ s MA C Log File • Step 4—Int[...]

  • Страница 6

    Troubleshoo ting Tips 6 Release 11.3(4)NA Figure 2 Cable Modem Initi alization Flowchart Register with the Cisco uBR7246 Registration complete Power on Scan for downstream channel Obtain upstream parameters Upstream parameter acquired Start Ranging Ranging and auto adjust completed Establish IP connectivety IP complete Establish time of day T ime o[...]

  • Страница 7

    Connect to the Cable Modem Troubleshooting Tip s for the Cisco uBR904 Cable Modem 7 . Connect to the Cable Modem T elnet to the IP address assigned to the cable inte rf ace or Ethernet interface. If the interface is not up, you need to access the Cisco IOS software via the RJ-45 console port, which is a physical port on the back of the cable modem.[...]

  • Страница 8

    Troubleshoo ting Tips 8 Release 11.3(4)NA Displa y the Cable Modem’ s MA C Log File A MA C layer circular log file is inside the cable mo dem. This file contains a history of log messages, such as state ev ent acti vities and ti mestamps, which are used for troublesho oting purposes. This lo g file contains the most valuable information for a cab[...]

  • Страница 9

    Display the Cable Modem’s MAC Log File Troubleshooting Tip s for the Cisco uBR904 Cable Modem 9 508146.122 CMAC_LOG_DS_CHANNEL_SCAN_COMPLETED 508146.124 CMAC_LOG_STATE_CHANGE wait_ucd_state 508147.554 CMAC_LOG_UCD_MSG_RCVD 3 508147.558 CMAC_LOG_UCD_NEW_US_FREQUENCY 20000000 508147.558 CMAC_LOG_SLOT_SIZE_CHANGED 8 508147.622 CMAC_LOG_FOUND_US_CHAN[...]

  • Страница 10

    Troubleshoo ting Tips 10 Release 11.3(4)NA Y ou can display other aspects of the MAC layer by using variations of the show controller cable-modem 0 mac command : uBR904# show controller cable-modem 0 mac ? errors Mac Error Log data hardware All CM Mac Hardware registers log Mac log data resets Resets of the MAC state Current MAC state For e xamples[...]

  • Страница 11

    Interpret the MAC Log File and Take Action Troubleshooting Tips for the Cisco uBR904 Cable Modem 11 Ev ent 2 — Scan for a Do wnstream Channel then Synchronize Different geographical regions and dif ferent cable plants use dif ferent frequency bands. The Cisco uBR904 cable modem uses a built-in default fr equency scanning feature to address this i[...]

  • Страница 12

    Troubleshoo ting Tips 12 Release 11.3(4)NA Ev ent 3—Obtain Upstream P arameters The cable modem waits for an upstream channel descriptor mess ages (UCD) from the headend Cisco uBR7246. This is done to retriev e transmi ssion parameters for the upstream channel. 508146.124 CMAC_LOG_STATE_CHANGE wait_ucd_state 508147.554 CMAC_LOG_UCD_MSG_RCVD 3 508[...]

  • Страница 13

    Interpret the MAC Log File and Take Action Troubleshooting Tips for the Cisco uBR904 Cable Modem 13 Ev ent 5—Establish IP Connectivity After ranging is complete, the cable interface on the cable modem is up. No w the cable modem accesses a remote DHCP serv er to get an IP addres s. The DHCP request also includes the name of a file that contains a[...]

  • Страница 14

    Troubleshoo ting Tips 14 Release 11.3(4)NA Ev ent 8 — T ransf er Operational P arameters After the DHCP and security operations are su ccessful, the cable modem do wn loads operational parameters from a cab le company’ s TF TP serv er . These parameters are transferred via a configuration file. The f ield CMAC_LOG_DHCP_CONFIG_FILE_NAME shows th[...]

  • Страница 15

    Use Additional Tr oubleshooti ng Commands Troubleshooting Tips for the Cisco uBR904 Cable Modem 15 Ev ent 11 — Enter the Maintenance State As soon as the cable modem is completely up and running, it enters the operational mai ntenance state. 508178.322 CMAC_LOG_STATE_CHANGE maintenance_state Use Additional T roub leshooting Commands Y ou can use [...]

  • Страница 16

    Command Reference 16 Release 11.3(4)NA Command Reference This section provides new commands for troubleshooting the Cisco uBR904 cable modem. All other commands used with this feature are documented in the Cisco IOS Release 11.3 command references. • show contr oller cable-modem • show contr oller cable-modem bpkm • show contr oller cable-mod[...]

  • Страница 17

    show controller cable-modem Troubleshooting Tips for the Cisco uBR904 Cable Modem 17 show contr oller cable-modem T o display high-lev e l controller info rmation about a cable modem, use the show contr oller cable-modem Pri vileged EXEC command. Syntax Description Command Mode Privileged EXEC Usage Guidelines This command f i rst appeared in Cisco[...]

  • Страница 18

    Command Reference 18 Release 11.3(4)NA Global control and status: global_ctrl_status=0x00 interrupts: irq_pend=0x0008, irq_mask=0x00F7 Related Commands show contr oller cable-modem bpkm show contr oller cable-modem des show contr oller cable-modem filters show contr oller cable-modem lookup-table show contr oller cable-modem mac show contr oller ca[...]

  • Страница 19

    show controller cable-modem bpkm Troubleshooting Tips for the Cisco uBR904 Cable Modem 19 show contr oller cable-modem bpkm T o display inform ation about th e baseline priv acy k ey management exchange between the cable modem and the headend CMTS, use the show contr oller cable-modem bpkm Pr ivileged EXEC command. show contr oller cable-modem numb[...]

  • Страница 20

    Command Reference 20 Release 11.3(4)NA show contr oller cable-modem des T o display infor mation about th e Data Encryp tio n Standard (DES) engine registers, use the show controller cable-modem des Privileged EXEC command. show contr oller cable-modem des Syntax Description This command has no k ey words or ar guments. Command Mode Privileged EXEC[...]

  • Страница 21

    show controller cable-modem des Troubleshooting Tips for the Cisco uBR904 Cable Modem 21 Related Commands show contr oller cable-modem show contr oller cable-modem bpkm show contr oller cable-modem filters show contr oller cable-modem lookup-table show contr oller cable-modem mac show contr oller cable-modem phy show contr oller ca ble-modem tuner [...]

  • Страница 22

    Command Reference 22 Release 11.3(4)NA show contr oller cable-modem filter s T o display the registers in the MA C hardware that are used for filtering recei ved frames, use the show controller cable-modem filters Privileged EXEC command. show contr oller cable-modem filters Syntax Description There are no key words or ar guments for this command. [...]

  • Страница 23

    show controller ca ble-modem filters Troubleshooting Tips for the Cisco uBR904 Cable Modem 23 Related Commands show contr oller cable-modem show contr oller cable-modem bpkm show contr oller cable-modem des show contr oller cable-modem lookup-table show contr oller cable-modem mac show contr oller cable-modem phy show contr oller ca ble-modem tuner[...]

  • Страница 24

    Command Reference 24 Release 11.3(4)NA show contr oller cable-modem lookup-table T o display the mini-slot lookup tab le inside a cable modem, use the show controller cable-modem lookup-tab l e Priv ileged EXEC command. show contr oller cabl e-modem look up-table Syntax Description This command has no keywords or ar guments. Command Mode Privileged[...]

  • Страница 25

    show controller cable-modem lo okup-table Troubleshooting Tips for the Cisco uBR904 Cable Modem 25 1C 1C 1C 1C 1C 1C 1C 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1D 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1E 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 21 21 21 21 21 21 21 21 21 21 21 21 21[...]

  • Страница 26

    Command Reference 26 Release 11.3(4)NA show contr oller cable-modem mac T o show detailed MAC layer information for a cable modem, en ter the show cable controller cable-modem number mac Pri vileged EXEC command. show contr oller cable-modem number mac [ errors | hard ware | log | res e ts | state ] Syntax Description Command Mode Privileged EXEC U[...]

  • Страница 27

    show controller cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 27 Sample Display 1 The following sample display sho ws the MAC log f ile for a cable-modem interface that has successfully come up: uBR904# show controller cable-modem 0 mac log *Mar 7 01:42:59: 528302.040 CMAC_LOG_LINK_DOWN *Mar 7 01:42:59: 528302.042 CMAC_LOG_R[...]

  • Страница 28

    Command Reference 28 Release 11.3(4)NA *Mar 7 01:43:15: 528317.958 CMAC_LOG_RNG_RSP_MSG_RCVD *Mar 7 01:43:15: 528317.960 CMAC_LOG_ADJUST_TX_POWER 14 *Mar 7 01:43:15: 528317.962 CMAC_LOG_POWER_LEVEL_IS 34.0 dBmV (commanded) *Mar 7 01:43:15: 528317.964 CMAC_LOG_RANGING_CONTINUE *Mar 7 01:43:16: 528318.968 CMAC_LOG_RNG_REQ_TRANSMITTED *Mar 7 01:43:16:[...]

  • Страница 29

    show controller cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 29 Sample Displa ys 3 The show controller cable-modem 0 mac resets command sho w s only the en tries in the cable MAC log that begin with the field CMAC_LOG_RESET . Collectiv ely presenting these fields provides you with a summary of the most recent reasons why th[...]

  • Страница 30

    Command Reference 30 Release 11.3(4)NA CMAC_LOG_RESET_PRIVACY_WATCHDOG_EXPIRED The baseline pri vac y excha nge with the CMTS took too long. CMAC_LOG_RESET_CHANGE_US_WATCHDOG_EXPIRED The cable modem was unable to tran smit a response to a UCC-REQ message. CMAC_LOG_RESET_SECURITY_WATCHDOG_EXPIRED The “full se curity” exchange with the CMTS took [...]

  • Страница 31

    show controller cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 31 Sample Display 4 This example display for the show contr oller cable-modem 0 mac hardwar e command shows the detailed configuration of the interface dri ver a nd MA C layer hardware. The most interesting bit is the station address (hardware address) . The rest [...]

  • Страница 32

    Command Reference 32 Release 11.3(4)NA 27 pak=0x82DC904 buf=0x21D65A status=0x80 pak_size=0 28 pak=0x82DC70C buf=0x21CF52 status=0x80 pak_size=0 29 pak=0x82DC514 buf=0x21C84A status=0x80 pak_size=0 30 pak=0x82DC31C buf=0x21C142 status=0x80 pak_size=0 31 pak=0x82DC124 buf=0x21BA3A status=0xA0 pak_size=0 RX MAC message ring with 8 entries at 0x201E80[...]

  • Страница 33

    show controller cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 33 timing recovery circuit: loop_enable=0x00, minislot_divisor=0x00 K0_ctrl=0x06, K1_ctrl=0x07, acq_threshhold=0x01 err_threshhold=0x04, timeout_threshold=0xFF nco_bias=0x4F7004F7, ranging_offset=0x00000000 ts_err=0x00, sync_valid=0x00, delta_F=0x00 timeout_err=0x[...]

  • Страница 34

    Command Reference 34 Release 11.3(4)NA 98 219000000 225000000 6000000 99 177000000 213000000 6000000 US ID: 1 US Frequency: 20000000 US Power Level: 34.0 (dBmV) US Symbol Rate: 1280000 Ranging Offset: 12460 Mini-Slot Size: 8 Change Count: 4 Preamble Pattern: CC CC CC CC CC CC CC CC CC CC CC CC CC CC 0D 0D Burst Descriptor 0: Interval Usage Code: 1 [...]

  • Страница 35

    show controller cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 35 Baseline Privacy: Auth. Wait Timeout: 10 Reauth. Wait Timeout: 10 Auth. Grace Time: 600 Op. Wait Timeout: 1 Retry Wait Timeout: 1 TEK Grace Time: 600 Auth. Reject Wait Time: 60 COS 1: Assigned SID: 5 Max Downstream Rate: 4000000 Max Upstream Rate: 2000000 Upstr[...]

  • Страница 36

    Command Reference 36 Release 11.3(4)NA show contr oller cable-modem ph y T o display detailed contents about the re gisters used in the downstream physical hardware used by a cable modem, use the show controller cable-modem ph y Pri vileged EXEC command. show contr oller cable-modem phy { recei ve | transmit } Syntax Description Command Mode Privil[...]

  • Страница 37

    show controller cable-modem phy Troubleshooting Tips for the Cisco uBR904 Cable Modem 37 Physical transmit registers are di splayed in the following example: uBR904# show controller cable-modem 0 phy transmit BCM3037 Transmitter Registers: part_id = 3037 rev_id = 01 test_mode = 00 test_input = 00 test_misc = 2009 rst = 00 power = 0000 power_2 = 00 [...]

  • Страница 38

    Command Reference 38 Release 11.3(4)NA show contr oller cable-modem tuner T o display the settings for the upstream and down stream tuners used by a cable modem, use the sho w controller cabl e-modem tuner Pri vileged EXEC command. show contr oller cable-modem tuner Syntax Description There are no key words or ar guments for this command. Command M[...]

  • Страница 39

    show controller cabl e-modem tuner Troubleshooting Tips for the Cisco uBR904 Cable Modem 39 show contr oller cable-modem mac show contr oller cable-modem phy show interface cable-modem[...]

  • Страница 40

    Command Reference 40 Release 11.3(4)NA show interface cab le-modem T o display information about the cable mo dem interface on a cable modem, use the sho w interface cable-modem EXEC command. show interface cable-modem number [ accounting | counters | crb | irb | type ] Syntax Description Command Mode EXEC Usage Guidelines This command f i rst appe[...]

  • Страница 41

    show interfac e cable-modem Troubleshooting Tips for the Cisco uBR904 Cable Modem 41 The follo wing example displays th e number of packets and each prot ocol type passing through the cable modem interface: uBR904# show int cable-modem 0 accounting cable-modem0 Protocol Pkts In Chars In Pkts Out Chars Out IP 545 185502 159 90240 Trans. Bridge 3878 [...]

  • Страница 42

    Debug Commands 42 Release 11.3(4)NA Deb ug Commands The following ne w debug commands are av ailable to troublesh oot a cable modem: • debug cable- modem bpkm • debug cable- modem bridge • debug cable-modem error • debug cable-mo dem interrupts • debug cable- modem mac • debug cable- modem map[...]

  • Страница 43

    debug cable-modem bpkm Troubleshooting Tips for the Cisco uBR904 Cable Modem 43 deb ug cable-modem bpkm T o debug baseline pri vac y inform ation on a cable modem, use the debug cable-modem mac Privileged EXEC command. The no form of this command turns debugging messages off. [ no ] debug cable-modem bpkm { errors | event s | packets } Syntax Descr[...]

  • Страница 44

    Debug Commands 44 Release 11.3(4)NA Related Commands debug cable-modem bridg e debug cable-modem err or debug cable-modem interrupts debug cable-modem mac debug cable-modem map[...]

  • Страница 45

    debug cable-mo dem bridge Troubleshooting Tips for the Cisco uBR904 Cable Modem 45 deb ug cable-modem bridge Use the debug cable-modem bridge Privileged EXEC co mmand to debug bridge filter processing information on a cable modem. The no form of this command turns debugging messages of f. [ no ] debug cable-modem bridge Usage Guidelines This comman[...]

  • Страница 46

    Debug Commands 46 Release 11.3(4)NA deb ug cable-modem err or Use the the debug cable-modem err or Privileged EX EC command to enable debugging messages for the cable interface dri ver . The no form of this command tu rns debugging messages of f. [ no ] debug cable-modem err or Usage Guidelines This command f i rst appeared in Cisco IOS Releas e 11[...]

  • Страница 47

    debug cable-modem i nterrupts Troubleshooting Tips for the Cisco uBR904 Cable Modem 47 deb ug cable-modem interrupts Use the debug cable-modem interrupts command to deb ug cable modem interrupts. The no form of this command turns debugging messages off. [ no ] debug cable-modem interrupts Usage Guidelines This command f i rst appeared in Cisco IOS [...]

  • Страница 48

    Debug Commands 48 Release 11.3(4)NA deb ug cable-modem mac Use the debu g cable-modem mac Privile ged EXEC command to troublesh oot the cable modem MA C layer . The no form of this command turns debugging messages off. [ no ] debug cable-modem mac { log [ verbose ] | messages } Syntax Description Usage Guidelines This command f i rst appeared in Ci[...]

  • Страница 49

    debug cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 49 Figure 8 Sample Deb ug Cable-Modem Mac Log Output uBR904# debug cable-modem mac log *Mar 7 01:42:59: 528302.040 CMAC_LOG_LINK_DOWN *Mar 7 01:42:59: 528302.042 CMAC_LOG_RESET_FROM_DRIVER *Mar 7 01:42:59: 528302.044 CMAC_LOG_STATE_CHANGE wait_for_link_up_state *Mar 7 01:42[...]

  • Страница 50

    Debug Commands 50 Release 11.3(4)NA Figure 9 compares t he output of the debug cable-modem mac log command with the deb ug cable-modem mac log verbose command. The k eyword verbos e disp lays periodic ev ents such as rangin g. Figure 9 Sample Deb ug Cable-Modem Mac Log an d Verbo se Output uBR904# debug cable mac log Cable Modem mac log debugging i[...]

  • Страница 51

    debug cable-modem mac Troubleshooting Tips for the Cisco uBR904 Cable Modem 51 *Mar 7 01:44:06: control - 03 *Mar 7 01:44:06: version - 01 *Mar 7 01:44:06: type - 02 == UCD *Mar 7 01:44:06: RSVD - 0 *Mar 7 01:44:06: US Channel ID - 1 *Mar 7 01:44:06: Configuration Change Count - 4 *Mar 7 01:44:06: Mini-Slot Size - 8 *Mar 7 01:44:06: DS Channel ID -[...]

  • Страница 52

    Debug Commands 52 Release 11.3(4)NA *Mar 7 01:44:06: *Mar 7 01:44:06: MAP MESSAGE *Mar 7 01:44:06: ----------- *Mar 7 01:44:06: FRAME HEADER *Mar 7 01:44:06: FC - 0xC3 == MAC Management with Extended Header *Mar 7 01:44:06: MAC_PARM - 0x02 *Mar 7 01:44:06: LEN - 0x42 *Mar 7 01:44:06: EHDR - 0x00 0x00 *Mar 7 01:44:06: MAC MANAGEMENT MESSAGE HEADER *[...]

  • Страница 53

    debug cable-mo dem map Troubleshooting Tips for the Cisco uBR904 Cable Modem 53 deb ug cable-modem map Use the debug cable-modem map Privileged EXEC command to display the timing f rom MAP messages to sync messages and the timing between MAP messages. The no form of this command disables debugging output. [ no ] debug cable-modem map Usage Guidelin[...]

  • Страница 54

    What to do Next 54 Release 11.3(4)NA What to do Ne xt For more troubleshooting tips, see the ch apter “T roub leshooting the Inst allation” in the Cisco Cable Modem Installation and Configuration Guide .[...]