Cisco SystemsメーカーUBR10012の使用説明書/サービス説明書
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iii Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 CONTENTS Preface vi i Pur pose vii Audienc e vii Document Organi zation vii i Relat ed D ocum ent atio n vii i Obtain ing Docu mentati on ix Cisco.
Cont ent s iv Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 PRE Module Not Suppo rted 3-2 PRE-1 Module Stat us Scre en 3-2 Bootin g Up with Redun dant PRE -1 Modules 3-.
Content s v Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 CHAPTER 5 Replacing or Recovering Passwords 7-1 Password Recove ry Procedu re Overvi ew 7-1 Password Recove r.
Cont ent s vi Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01.
vii Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 Preface This gu ide docu ments p rocesses and pro cedu res f or user lev el ha rdware t rouble shootin g on the Cisco uBR10012 universal broadba nd rou ter.
viii Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Preface Docum ent Organ izatio n Document Orga nization The sect ions of this gui de are as fo llows: Related Documen.
ix Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 Pre face Obtaining Documentat ion For more infor mation a bout the IO S software t hat run s on the Cisco uBR1 0012 ro.
x Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Preface Obtain ing Techni cal Ass istance Y ou can submi t commen ts by using the re sponse car d (if pre sent) beh ind .
xi Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 Pre face Obtaining Additional Publications and Information TAC Case Priority Definitions T o ensure that all cases are reported in a standard format, Ci sco has established case prior ity defi nitions.
xii Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Preface Obtainin g Addi tional Pub lications and Informat ion • T rainin g—Cisc o offers world-cla ss networking tra ining. C urren t offerings in network tra ining are listed a t this URL: http://www .
C HAPTER 1-1 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 1 Basic Trouble shooting Tasks and Startup Issues This se ction descri bes th e basi c proce dure s that use.
1-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapter 1 Basic Troub leshooti ng Tasks and St artup Is sues Confirmi ng the Hard ware Inst allation Confirming the Hardware Installation Start troublesho oting the installation b y issuing the show hardwar e comm and.
1-3 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 1 Basic Tro ubleshoo ting Task s and Sta rtup Issu es Displaying the Cisco IOS Software Version 2 Gigabit Ethernet/IEEE 802.3 interface(s) 4 Cable Modem network interface(s) 509K bytes of non-volatile configuration memory.
1-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapter 1 Basic Troub leshooti ng Tasks and St artup Is sues Display ing Syste m Environme nt Inform ation Displaying .
1-5 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 1 Basic Tro ubleshoo ting Task s and Sta rtup Issu es Cisco uBR10012 Syste m Startup Seq uence Figur e 1 -1 H.
1-6 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapter 1 Basic Troub leshooti ng Tasks and St artup Is sues Cisco uBR10012 System Startup Seque nce T able 1 -1 Ci sc.
C HAPTER 2-1 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 2 PEM Faults and Fan Assembly Failures The follo w ing sections provide metho ds for troubleshootin g faults in volvi ng the Cisco uBR10012 DC Power Entry Mod ules (PE Ms), t he opt ional 24 00W AC-input p ower shelf, and fan a ssembly module .
2-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 2 PEM Faults and Fan Assembly Fai lures AC PEM Fa ults Figur e 2-1 A C PEM F ro nt P anel Ta b l e 2 - 2 lists the AC PEM fault symptoms and cor recti ve actions.
2-3 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 2 PEM Faults and Fan As sembly F ailures DC PEM Faults Ti p Secu rely tighten the cap tiv e scre ws on your PEMs to prev ent height ened le vels of elec tromagne tic interf erence.
2-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 2 PEM Faults and Fan Assembly Fai lures DC PEM Fa ults Figur e 2-2 DC PEM F r ont P anel (or iginal mode l, U.
2-5 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 2 PEM Faults and Fan As sembly F ailures 2400W AC-Input P ower Shelf Ta b l e 2 - 4 lists the DC PEM fault sympt oms and correcti ve actions.
2-6 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 2 PEM Faults and Fan Assembly Fai lures Other Elect rical Probl ems The power shelf i nclude s three 120 0-watt (W) A C-inp ut power modules t hat plug in to a comm on power backpl ane in th e 2400W A C-i nput power shelf.
2-7 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 2 PEM Faults and Fan As sembly F ailures Fan Assembly Module Faults Check the s ite f or: • Improp erly gro.
2-8 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 2 PEM Faults and Fan Assembly Fai lures Fan Asse mbly Mod ule Fa ults Figur e 2-6 F an Assembly Air Cir culation P att er n The LEDs on the front pane l indicate the curr ent status of the fa ns.
2-9 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 2 PEM Faults and Fan As sembly F ailures Fan Assembly Module Faults T able 2-6 F an Assembly Module F ault Indications and Recomm ended A ction Symptom Steps to T ake Fans O K LED is n ot lit 1.
2-10 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 2 PEM Faults and Fan Assembly Fai lures Fan Asse mbly Mod ule Fa ults.
C HAPTER 3-1 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 3 Troubleshooting PRE-1 Modules This cha pter desc ribes how to troubl eshoo t Performa nce Rou ting Engi ne (PRE-1 ) modul es. It pr ovides inform ation on tro ubleshoo ting PR E-1 fa ult sta tes, t he man agemen t Eth ernet po rt, and th e seri al por t.
3-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les PRE Modu le Not Supporte d PRE Module Not Sup ported The Ci sco uBR10 012 r outer supports only the PRE-1 module in Ci sco IO S Rele ase 12.
3-3 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Booting Up with Redundant PRE-1 Modules Booting Up with Redundan t PRE-1 Mo.
3-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les PRE-1 Modul e Faults • V erif y th at both PRE-1 modules a re boot ing the same version of Cisco I OS soft ware.
3-5 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules PRE-1 Module Faults Figur e 3-1 PRE-1 F acepla te and LEDs Ta b l e 3 - 2 lists the P RE-1 fault indicati ons and recommended ac tions.
3-6 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Ethernet Connectio n Problems Ethernet Connection Problems If the manag.
3-7 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Consol e Port S erial C onnect ion Pr oblems Step 2 Check that the Et hernet port in quest ion is assigned a v alid IP address.
3-8 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems Step 8 The consol e can be froz en if the PRE -1 proce ss is ge neratin g a la rge volume of d ebug message s.
3-9 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms For additional informatio n on troubleshooting system crashe s, see the follo wing URLs: • T roubleshooting Ro uter Crashes , at the follo wing URL: http://www .
3-10 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems In additio n, the Cisco CMT.
3-11 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms CPUHOG Errors The rou ter displays a %SYS -3-CPUHOG err or message when a process is using an excessi ve amount o f processo r cycles.
3-12 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems For informat ion on resol v.
3-13 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms Fo r more informati on, se e the docu ment T r oubleshooting High CPU Utilization Due to Pr ocesses , at the following U RL: http://www .
3-14 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems Cisco Internetwork Operating System Software IOS (tm) 10000 Software (UBR10K-P6-M), Experimental Version 12.
3-15 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms Ti p The most effect i ve w ay .
3-16 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems Fatal Ali gnment Errors If the alignment er ror wa s a fa tal error , it display s a message similar to the follo wing: %ALIGN-1-FATAL: Corrupted program counter error.
3-17 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms System returned to ROM by processor memory parity error at PC 0x60301298, address 0x0 at 17:19:47 PDT Mon Dec 15 2003 System restarted at 17:19:47 PDT Mon Dec 15 2003 .
3-18 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems The syste m also allo cates pu blic pools in a number of di f fer ent sizes for more gene ral use.
3-19 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 3 Troubleshoot ing PRE-1 Mo dules Troubl eshooti ng Common Sys tem Proble ms Spurious Memory Accesses A spur.
3-20 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Cha pter 3 Trou bl eshoo ti ng P RE-1 Modu les Troublesho oting Co mmon Sy stem Pr oblems.
C HAPTER 4-1 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 4 Troubleshooting Line Cards This c hapter d iscus ses trou bleshoot ing fau lts on the f ollowing Cisco uB .
4-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s General Information for Troub leshooting Line Card Cras hes General Informa t.
4-3 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds General Information for Troubleshooting Line Card Crashes Slot 5/1: 0 crashes .
4-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s General Information for Troub leshooting Line Card Cras hes Step 8 The vast m.
4-5 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds General Information for Troubleshooting Line Card Crashes • Hard pa rity error s occur when a hardware de fect in the DRAM or proce ssor board causes d ata to be repea tedly co rrup ted at the sam e ad dress.
4-6 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s General Information for Troub leshooting Line Card Cras hes Step 2 If the re sults from the Output Interpr eter indicate a har dware-rela ted problem, try remo ving and reinserting the hardware into the chassis.
4-7 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds General Information for Troubleshooting Line Card Crashes If the crash is acco.
4-8 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting t he T iming, Com municat ion, and Cont rol Plus Card Troubl.
4-9 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troub lesh oot ing t he Ti mi ng, Co mmu nicat ion, and Cont rol P lus C ard When perf orming any tro ublesho oting on th e TCC+ cards, first check the LE Ds as follows: 1.
4-10 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting t he T iming, Com municat ion, and Cont rol Plus Card T abl.
4-11 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troub lesh oot ing t he Ti mi ng, Co mmu nicat ion, and Cont rol P lus C ard The show controlle rs clock-r efer ence command displa ys comp are er rors b etween t he tw o TCC + cards insta lled i n the Cisco u BR10012 rout er .
4-12 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting the O C-12 Packet-O ver-SONE T Line Card Troubleshooting th.
4-13 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troubl eshooti ng the OC-12 Packet -Over-SONE T Line Card T able 4-5 OC-12 POS Line Ca rd F ault Indica tions and Recommende d Action Faul t Corre ctive A ction Fail LE D is li t indicating that the l ine card has faile d 1.
4-14 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting the OC-12 D ynamic Pac ket Transp ort Spatial Reuse Proto c.
4-15 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troubl eshoot ing the OC-12 Dyn amic P acket Tran sport Sp atial Re use Pr otocol WA N Card RX PKTS (P acke ts) Blinking Gree n Off Indi cates th at the DPT po rt line ha s rec ei ved a pa cket.
4-16 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting the Cisco uB R10012 OC- 48 DPT /POS Line Card Troubleshooti.
4-17 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troublesh ooting th e Cisco uBR10012 OC- 48 DPT/POS Line Card SYNC Green Off .
4-18 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting the G igabit Etherne t Line Card Troubleshooting the Gigabi.
4-19 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 4 Troublesh ooting Line Ca rds Troub le shoot in g the Giga bi t Eth ern et Lin e C ard Ta b l e 4 - 8 de scribes the gi gabit Et herne t line card faul t indic ations and su ggests r esponses to each .
4-20 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chapt er 4 Troublesho oting Li ne Card s Troubles hooting the G igabit Etherne t Line Card.
C HAPTER 5-1 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 5 Replacing or Recovering Passwo rds This sec tion d escribes h ow to recover a lost ena ble or console login pas sword, a nd how to repla ce a lost enab le secre t passwo rd on t he C isco uBR 10012 rou ter.
5-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chap ter 5 R epla cing or Re cove rin g Pas swor ds Password Rec overy Proce dure Step 2 Conf igure the termi nal to opera te at 9600 ba ud, 8 data bits , no parity , and 1 stop bit.
5-3 Cisco uBR10012 Unive rsal Broadb and Router Tr oubleshootin g Guide OL-1237-01 Chapter 5 Replacing or Reco vering Passwords Password R ecovery Pr ocedu re Cautio n Do not ex ecute the next step unless you have determ ined you must cha nge or replac e the en able, e nable secret , or c onsole login passwords.
5-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Chap ter 5 R epla cing or Re cove rin g Pas swor ds Password Rec overy Proce dure.
A- 1 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 APPEND IX A Unsupported Commands The fol lo wing are lists of t he commands that a re presen t b ut not sup ported fo r the Cisco uBR10 012 r outer in various rele ases of the C isco IO S software .
A- 2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Appe ndix A U nsupp orte d Co mman ds HCCP Commands • frame-relay map ip ip -addr ess dlci [b roadcast] [ci sco | i.
A-3 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 Append ix A Unsu pported Com mands Unsuppor ted MPLS VPN C ommands Unsupported MPLS VPN Commands The fo llowing commands ar e not suppor ted in any Cisco IO S software release.
A- 4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Appe ndix A U nsupp orte d Co mman ds Unsupp orted Telc o-Return Comm ands • cable telco-r etur n spd factor y-defa.
B-1 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 APPEND IX B Recommended Tools and Test Eq uipment Ta b l e B - 1 lists the basic tools and test equipment necessar y to perform general maintenan ce and troublesh ooting tasks on the Cisco uBR1 0012 router.
B-2 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Appendi x B Recommended To ols and Te st Equipmen t Testin g with TD Rs and OTD Rs T est f iber -optic c able b oth before i nstallation (on-the-reel testing) a nd after installation.
B-3 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 Append ix B Recommen ded Tool s and Test Equipme nt Testing with Breakout Bo xes, Fox Boxe s, and BERT s/BLERTs Testi.
B-4 Cisco uBR10012 Unive rsal Broadba nd Router Troubleshootin g Guide OL-1237-01 Appendi x B Recommended To ols and Te st Equipmen t Testin g with Ne twork An alyzers Testing with Network Analyzers U.
IN-1 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 INDEX A acces s-list com piled c ommand 3-13 access lists 3-13 AC PEM faults 2-1 to 2-3 ACTIVE L ED OC-12 DPT/ SRP 4.
Index IN-2 Cisco uBR10012 Unive rsal Broadba nd Router Tro ublesho oting Guide OL-1237-01 enabl e secr et comm and 7-3 environmen tal information, displaying 1-4 Ethern et prob lems 3-6 exec proces se.
Inde x IN-3 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 PRE-1 module 3-4 to 3-6 PRES ENT, TCC+ 4-9 RX, OC- 48 DPT/ POS 4-16 RX CA RRI ER, OC- 12 DP T/SR P 4-14 RX PK.
Index IN-4 Cisco uBR10012 Unive rsal Broadba nd Router Tro ublesho oting Guide OL-1237-01 OC-12 DPT/ SRP 4-14 TCC+ 4-9 PPP commands A-3 PRE-1 module 3-1 alpha numer ic displa y 1-6, 3-2 conso le conne.
Inde x IN-5 Cisco uBR10012 Univ ersal Broadb and Router Tr oubleshooti ng Guide OL-1237-01 T TCC+ LEDs 4-8 troublesh ooting 4-8 TDR B-2 telco-re turn commands A-3 terminal setti ngs 3-8 test equi pmen.
Index IN-6 Cisco uBR10012 Unive rsal Broadba nd Router Tro ublesho oting Guide OL-1237-01.
デバイスCisco Systems UBR10012の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Cisco Systems UBR10012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 UBR10012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 UBR10012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 UBR10012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 UBR10012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 UBR10012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 UBR10012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 UBR10012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。
