Cisco Systems uBR7200 Setting the Downstream Channel ID, Verifying the Downstream Channel ID

Page 20

Configuring Headend Broadband Access Router Features

Configuring the Downstream Cable Interface

Setting the Downstream Channel ID

To assign a numeric channel ID to the downstream port on the Cisco cable modem card, use the following command in cable interface configuration mode:

Command

Purpose

 

 

CMTS01(config-if)#cable downstream channel-id id

Specifies the downstream channel ID. Acceptable range is

 

0 to 255.

 

 

Verifying the Downstream Channel ID

To verify the downstream channel ID, enter the show controllers cable command for the downstream port you have just configured:

CMTS01# show controllers cable 6/0 downstream

Cable6/0 Downstream is up

Frequency=96000000, Channel Width 6 MHz, 64-QAM, Symbol Rate 5.056941 Msps

FEC ITU-T J.83 Annex B, R/S Interleave I=32, J=4

Troubleshooting Tips

To troubleshoot the configuration, perform the following tasks:

Make sure the cable connections are not loose or disconnected.

Make sure the Cisco cable modem card is firmly seated in its chassis slot and the captive installation screws are tight.

Make sure you entered the correct slot and port numbers when you typed the command.

Make sure the downstream carrier is active by entering the cable downstream if-outputcommand.

Setting the Downstream MPEG Framing Format (Annex B)

The Moving Pictures Experts Group (MPEG) framing format must be compatible with your local standards and specifications for downstream MPEG framing. Annex B is the DOCSIS MPEG framing format standard for North America; Annex A is the European standard.

In Cisco IOS Release 12.1, only the Annex B MPEG framing format is supported.

Note The cable modem card downstream ports and the cable modems on the HFC network connected through these ports must be set to the same MPEG framing format.

To set the downstream MPEG framing format, use the following command in cable interface configuration mode:

Command

Purpose

 

 

CMTS01(config-if)#cable downstream annex B

Sets the downstream MPEG framing format.

 

 

Cisco IOS Multiservice Applications Configuration Guide

MC-538

Image 20
Contents Configuring Headend Broadband Access Router Features MC-519Headend Overview MC-520Topology of a Typical Broadband Network Voice over IP Services Telco Return MC-523MC-524 TODQoS Features Service Class ProfilesMultiple Service IDs MC-525MC-526 TAG/NetFlow SwitchingQoS Profile Enforcement MC-527 Tag SwitchingNetflow Switching Security Features Weighted Random Early DetectionWeighted Fair Queueing Committed Access Rate CARCable Modem and Multicast Authentication Using Radius Docsis Baseline PrivacyUpstream Address Verification MC-529Traffic Shaping Features Operations and Provisioning FeaturesDynamic Ranging MC-530Downstream Channel ID Configuration Burst Profile ConfigurationDownstream Frequency Override CPE LimitationSpectrum Management Headend Broadband Access Router Configuration Prerequisites MC-533Headend Broadband Access Router Configuration Tasks MC-534Configuring the Downstream Cable Interface CMTS01# configure terminalCMTS01config# interface cable 6/0 Activating the Downstream CarrierSetting the Downstream Center Frequency Troubleshooting TipsVerifying the Downstream Carrier MC-536MC-537 CMTS01config-if#cable downstream frequencyVerifying the Downstream Center Frequency Setting the Downstream Channel ID Setting the Downstream Mpeg Framing Format Annex BVerifying the Downstream Channel ID MC-538Setting the Downstream Modulation Verifying the Downstream Mpeg Framing FormatVerifying the Downstream Modulation MC-539Setting the Downstream Interleave Depth CMTS01config-if#cable downstream interleave-depthVerifying the Downstream Interleave Depth MC-540MC-541 Setting the Downstream Helper AddressVerifying the Downstream Helper Address Setting Downstream Rate Limiting MC-542MC-543 Configuring the Upstream Cable InterfaceVerifying Downstream Rate Limiting Setting the Upstream Frequency MC-544CMTS01# show controllers cable 6/0 u0 Verifying the Upstream FrequencyMC-545 Setting the Upstream Channel Width Verifying Upstream Channel WidthMC-546 Channel-width widthSetting the Upstream Input Power Level MC-547Verifying the Upstream Input Power Level Activating Upstream Admission ControlVerifying Upstream Admission Control MC-548Activating Upstream FEC MC-549Router# more systemrunning-config Specifying Upstream Minislot SizeVerifying Upstream FEC MC-550MC-551 Activating the Upstream ScramblerVerifying Upstream Minislot Size CMTS01config-if#cable upstream usport scrambler CMTS01# more systemrunning-configVerifying the Upstream Scrambler MC-552Activating Upstream Differential Encoding Activating Upstream Rate LimitingVerifying Upstream Differential Encoding MC-553MC-554 CMTS01config-if#no cable upstream usport rate-limitVerifying Upstream Rate Limiting MC-555 Activating Upstream Frequency AdjustmentFrequency-adjust averaging percentage MC-556 Activating Upstream Power AdjustmentVerifying Upstream Frequency Adjustment Activating Upstream Timing Adjustment Verifying Upstream Power AdjustmentMC-557 Continue secondsMC-558 Verifying Upstream Timing AdjustmentActivating the Upstream Ports MC-559 Setting Upstream Backoff ValuesVerifying the Upstream Ports CMTS01config-if#cable upstream usport range MC-560Data-backoff start end Data-backoff automaticMC-561 Configuring and Activating Baseline PrivacyVerifying Upstream Data Backoff Automatic MC-562 Configuring KEK PrivacyCMTS01config-if#cable privacy kek grace-time Configuring TEK Privacy Verifying KEK PrivacyVerifying TEK Privacy MC-563Configuring and Activating Frequency Agility Activating Baseline PrivacyVerifying Baseline Privacy MC-564Combiner Groups MC-565Frequency Management Policy MC-566Determining the Upstream Ports Assigned to a Combiner Group MC-567Configuring and Activating Spectrum Groups Creating Spectrum GroupsVerifying Spectrum Groups MC-568Command Purpose MC-569MC-570 MC-571 Verifying Spectrum Group ConfigurationVerifying Frequency Hopping Configuring Spectrum Group Characteristics MC-572Verifying Spectrum Group Characteristics CMTS01config# cable spectrum-group groupnum hopMC-573 Threshold percentActivating IP Address Resolution Protocol Assigning the Spectrum Group and the Upstream PortsActivating Cable ARP Requests Verifying Spectrum Group and Upstream Port AssignmentsMC-575 Activating Host-to-Host Communication Proxy ARPVerifying ARP Requests Configuring Dhcp Options Activating Cable Proxy ARP RequestsActivating Cable Relay Agent Verifying Cable Proxy ARP RequestsMC-577 Activating Dhcp giaddrVerifying Dhcp giaddr Activation Setting Service Options Setting Optional IP ParametersConfiguring ToD Service Verifying ToD ServiceActivating IP Multicast Echo Activating IP Broadcast EchoVerifying IP Multicast Echo MC-579Configuring Cable Profiles Configuring Cable Modulation ProfilesVerifying IP Broadcast Echo MC-580Number profile MC-581MC-582 Configuring QoS ProfilesVerifying Cable Modulation Profiles Verifying QoS Profiles MC-583Setting QoS Permission Enforcing a QoS Profile AssignmentVerifying QoS Permission MC-584MC-585 Managing Cable Modems on the HFC NetworkVerifying a QoS Profile Assignment Configuring Sync Message Interval Configuring Telco ReturnActivating Cable Modem Authentication Verifying Sync Message IntervalMC-587 Verifying Cable Modem AuthenticationActivating Cable Modem Upstream Address Verification CMTS01config-if#cable source-verify dhcp Activating Cable Modem Insertion IntervalVerifying Cable Modem Upstream Address Verification MC-588MC-589 CMTS01config-if#cable insertion-interval automaticVerifying Cable Modem Insertion Interval MC-590 Configuring Cable Modem Registration TimeoutVerifying the Maximum Number of Hosts MC-591 Clearing and Resetting Cable ModemsVerifying Registration Timeout MC-592 Verifying Cable Modem Clearing and ResettingClearing Cable Modem Counters Using Ping Docsis Verifying that Cable Modem Counters are ClearedVerifying Ping Docsis MC-593Spectrum Management Configuration Example MC-594Virtual Private Network Configuration Example MC-595MC-596 Ip http server Ip http authentication local No cdp run MC-597VoIP Configuration Example MC-598MC-599 Ip subnet-zero No ip domain-lookupTelco Return Configuration Example MC-600Cable telco-return enable MC-601QoS Profile Enforcement Configuration Example Cable Modem all resetMC-602 Cable RegTroubleshooting Using Cable Flap Lists Setting Cable Flap List AgingCMTS01config# cable flap-list aging days MC-603Setting Cable Flap List Insertion Time Setting Cable Flap List Power Adjustment ThresholdVerifying Cable Flap List Aging Verifying Cable Flap List Insertion TimeSetting Cable Flap List Miss Threshold Verifying Cable Flap List Power Adjustment ThresholdCMTS01config# cable flap-list miss-threshold misses Verifying Cable Flap List Miss ThresholdSetting Cable Flap List Size Clearing Cable Flap ListVerifying Cable Flap List Size MC-606
Related manuals
Manual 88 pages 21.59 Kb