Cisco Systems uBR7200 Series Guia de Resolução de Problemas descarregar pdf

CHAPTER

4-1

Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide

78-5897-01

Troubleshooting the System

This chapter contains troubleshooting information. The chapter includes the following sections:

• Using a Cable Modem at the Headend to Verify Downstream Signals

• Managing Cable Modems on the HFC Network

• Polling Cable Modems

• Understanding Show Command Responses

• Troubleshooting Using Cable Flap Lists

• Performing Amplitude Averaging

• Setting Downstream Test Signals

• Pinging Unresponsive Cable Modems

• Using Cable Interface Debug Commands

• Managing the Cisco uBR7246 VXR Clock Card

Using a Cable Modem at the Headend to Verify

Downstream Signals

You can use a Cisco uBR924 cable access router to verify the downstream signal originating from a

Cisco uBR7200 series universal broadband router. Be sure you configure the Cisco uBR924 according

to DOCSIS cable modem practises. To verify the downstream signal from a

Cisco uBR7200 series universal router using a Cisco uBR924, follow the procedure below:

Step 1 After the Cisco uBR924 is operational and you have an input signal between 0 and +5 dBmV, enter the

show controller c0 tuner command.

Step 2 Scan the output for the value corresponding to the signal to noise (SNR) estimate variable. If this value

is at least 35 dB, then you have an optimized signal. If the value is less than 34 dB, adjust the

upconverter at the cable headend.

1 2 3 4 5 6 ... 57 58

Resumo do Conteúdo

Página 1 - Troubleshooting the System

CHAPTER4-1Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-014Troubleshooting the SystemThis chapter contains troub

Página 2

4-10Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 3 - Verify Sync Message Interval

4-11Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 4 - Range, and Data Backoffs)

4-12Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 5

4-13Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 6 - Configure Per Modem Filters

4-14Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 7 - <acl>

4-15Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 8 - Clear Cable Modem Reset

4-16Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemPolling Cable ModemsSamp

Página 9 - Clear Cable Modem Counters

4-17Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemPolling Cable ModemsEnab

Página 10 - Configure Traffic Shaping

4-18Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 11 - Modem Card)

4-19Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 12 - Guided Frequency Hop

4-2Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 13

4-20Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 14 - Show Cable Hop Command

4-21Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 15

4-22Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 16 - Polling Cable Modems

4-23Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 17 - Enable SNMP

4-24Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 18 - General Show Commands

4-25Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 19 - Show Cable Modem

4-26Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 20

4-27Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 21 - 78-5897-01

4-28Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 22

4-29Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 23 - Show Cable Modem Maintenance

4-3Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 24 - Show Interface Cable

4-30Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 25

4-31Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 26

4-32Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 27

4-33Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUnderstanding Show Comma

Página 28

4-34Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 29

4-35Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 30

4-36Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 31 - Show Interface Cable SID

4-37Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 32

4-38Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 33

4-39Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 34 - Show Cable QoS Profile

4-4Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 35

4-40Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 36

4-41Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 37 - Display the Flap List

4-42Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 38

4-43Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 39

4-44Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemTroubleshooting Using Ca

Página 40

4-45Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemPerforming Amplitude Ave

Página 41

4-46Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemPerforming Amplitude Ave

Página 42

4-47Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemSetting Downstream Test

Página 43 - Clear Cable Flap List

4-48Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemPinging Unresponsive Cab

Página 44

4-49Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUsing Cable Interface De

Página 45

4-5Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 46

4-50Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUsing Cable Interface De

Página 47

4-51Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUsing Cable Interface De

Página 48 - Ping a Cable Modem

4-52Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUsing Cable Interface De

Página 49 - Debug Cable ARP Requests

4-53Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemUsing Cable Interface De

Página 50 - Debug Cable MAC Messages

4-54Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging the Cisco uBR72

Página 51 - Activate QoS Debug

4-55Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging the Cisco uBR72

Página 52 - Debug Upstream Messages

4-56Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging the Cisco uBR72

Página 53 - Debug CMTS Transmissions

4-57Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging the Cisco uBR72

Página 54 - Clear Clock Counters

4-58Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging the Cisco uBR72

Página 55 - Display Clock Values

4-6Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 56

4-7Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 57

4-8Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Página 58 - Show General Information

4-9Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide78-5897-01Chapter 4 Troubleshooting the SystemManaging Cable Modems on

Comentários a estes Manuais

Sem comentários

Cisco Systems uBR7200 Series Guia de Resolução de Problemas

Consulte online ou descarregue Guia de Resolução de Problemas para Routers Cisco Systems uBR7200 Series. Cisco Systems uBR7200 Series Troubleshooting Manual do Utilizador

Resumo do Conteúdo

Comentários a estes Manuais

Manuais e produtos relacionados com Routers Cisco Systems uBR7200 Series