Cisco SystemsメーカーuBR7200 Seriesの使用説明書/サービス説明書
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CHAPTER 4-1 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 4 Troubleshooting the System This chapter contains troubleshooting information.
4-2 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Tips The SNR estimate for a cable modem installed at a headend should be between 35 dB and 39 dB.
4-3 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Verify Sync Message Interval T.
4-4 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network T o acti v ate cable modem upstream address verif ication, use the following cable interf ace conf iguration command.
4-5 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Although the binary exponential backof f algorithm operates in a distributed fashion at dif ferent CMs, the CMTS provides centralized control for the backof f algorithm.
4-6 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Caution Only a trained CMTS administrator should adjust these v alues.
4-7 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network T o conf igure per modem f ilters, use the follo wing commands in cable interf ace conf iguration mode.
4-8 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Configure the Maximum Number o.
4-9 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Verify Clear Cable Modem Reset.
4-10 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Verify Clear Cable Modem Counters T o verify whether or not the counters in the Station Maintenance List are cleared, enter the follo wing command.
4-11 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network T o conf igure this, use the following command in cable interface conf iguration mode.
4-12 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network • Using time scheduled spectrum management, the upstream channel frequency reassignment process is initiated at a conf igured time of day or week.
4-13 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Sample output: noisy1# show cable spec Group Frequency Upstream Weekly Scheduled Power Shared No.
4-14 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network Sample output: noisy1# show c.
4-15 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing Cable Modems on the HFC Network noisy1# show cable hop Upstre.
4-16 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Polling Cable Modems Sample output: noisy1# show cable hop Upstream Po.
4-17 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Polling Cable Modems Enable SNMP Configure Remote Modem Monitoring Verifying Remote Query Information T o display information from a queried modem, enter the show cable modem r emote-query command.
4-18 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses Monitoring and Maintaining Remote Querying Use the following sho w commands to gather status information about the specif ied modems.
4-19 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses • The show cable f lap-list and.
4-20 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the sample command output below: router# show cable modem Interface Prim Online Timing Rec QoS CPE IP address MAC address Sid State Offset Power Cable3/0/U0 1 online 2257 0.
4-21 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses Note * means the noise po wer adj.
4-22 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the follo wing sample for det.
4-23 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the following sample output o.
4-24 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses Follo wing is a response to the show cable modem maintenance command using Cisco IOS Release 12.
4-25 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses T able 4-16 Show Interface Cable Command F ield Descriptions Field Description Cable slot/port is up/.
4-26 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses drops Indicates the number of pac.
4-27 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the following sample output f.
4-28 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses T able 4-18 Show Interface Cable Upstream Command F ield Descriptions Field Description Cable Indicates the location of the upstream interface Upstream is up/.
4-29 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses CIR admission control (formerly: .
4-30 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses Enhanced Show Interface Upstream Output The show interface cable upstr eam command is enhanced in Cisco IOS Release 12.
4-31 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses • Counters for each type of ups.
4-32 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the follo wing display output.
4-33 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Understanding Show Command Responses See the following display for the.
4-34 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Show Cable QoS Profile Follo wing is a response to the show cable qos pr of ile command.
4-35 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists list keeps track of the cable m.
4-36 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Tips In Cisco IOS Release 12.0(7)XR2, Cisco IOS Release 12.1(1a)T1, and higher , the system supports automatic po wer adjustments.
4-37 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Follo wing is a sample response to the show cable f lap command: uBR7200# show cable flap Mac Addr CableIF Ins Hit Miss CRC P-Adj Flap Time 0010.
4-38 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists T able 4-20 Flap List Statistics Description Statistic Description MA C ID This is the MA C-layer address of a cable modem.
4-39 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Hit and Miss The HIT and MISS columns are keepaliv e polling statistics between the Cisco uBR7200 series and the cable modem.
4-40 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Troubleshoot with the Flap List.
4-41 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Set Cable Flap List Aging Y ou can specify the number of days to record and retain f lapping activity on cable modems currently in the f lap-list table.
4-42 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Set Cable Flap List Power Adjustment Threshold Y ou can specify the po wer adjustment threshold that will cause a f lap-list event to be recorded.
4-43 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Verify Cable Flap List Miss Thr.
4-44 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Troubleshooting Using Cable Flap Lists Customize Other Flap List Value.
4-45 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Performing Amplitude Averaging Performing Amplitude Averaging The Cisc.
4-46 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Performing Amplitude Averaging Note The threshold default is 1 dB. The tolerable v alue default is 2 dB. The po wer adjustment is 30 percent.
4-47 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Setting Downstream Test Signals The follo wing example sho ws ho w to .
4-48 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Pinging Unresponsive Cable Modems Configure PRBS Test Signals Verify T.
4-49 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Using Cable Interface Debug Commands Verify the Ping The ping docsis c.
4-50 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Using Cable Interface Debug Commands Debug Environmental Monitor Messages This command acti vates deb ugging of the Cisco uBR7200 series en vironmental monitor .
4-51 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Using Cable Interface Debug Commands T o deacti v ate debugging of cab.
4-52 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Using Cable Interface Debug Commands Debug Cable Modem Ranging Messages This command acti vates deb ugging of ranging messages from cable modems on the HFC network.
4-53 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Using Cable Interface Debug Commands Debug Spectrum Management This command activ ates deb ugging of spectrum management (frequency agility) on the HFC netw ork.
4-54 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing the Cisco uBR7246 VXR Clock Card Debug Upstream Channel Description (UCD) Messages This command acti vates deb ugging of upstream channel descriptor (UCD) messages.
4-55 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing the Cisco uBR7246 VXR Clock Card Force Alternate Clock T o select the external timing source when the clock card is in holdov er mode, use the cable clock f orce global conf iguration command.
4-56 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing the Cisco uBR7246 VXR Clock Card The follo wing sample output.
4-57 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing the Cisco uBR7246 VXR Clock Card The follo wing is sample out.
4-58 Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide 78-5897-01 Chapter 4 Troubleshooting the System Managing the Cisco uBR7246 VXR Clock Card Show Clock Frames T o display information about the midplane TDM clock reference, use the show frame-clocks pri vile ged EXEC command.
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Cisco Systems uBR7200 Seriesをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはCisco Systems uBR7200 Seriesの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Cisco Systems uBR7200 Seriesの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Cisco Systems uBR7200 Seriesで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Cisco Systems uBR7200 Seriesを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はCisco Systems uBR7200 Seriesの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Cisco Systems uBR7200 Seriesに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちCisco Systems uBR7200 Seriesデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
