Cisco Systems uBR7200 manual Managing Cable Modems on the HFC Network, MC-585

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Configuring Headend Broadband Access Router Features

Managing Cable Modems on the HFC Network

Verifying a QoS Profile Assignment

To verify a QoS profile assignment, perform the following steps:

Step 1 Load the Cisco uBR7200 series and wait for the cable modems to come online as indicated by the show cable modem command.

Notice that the modems are getting their provisioned class of service as indicated by the show cable modem and show cable qos profile commands.

Step 2 Configure any QoS profile at the CMTS with a specific index number (for example, index 1) by using the SNMP/CLI.

Step 3 Enter the cable qos permission enforce 1 global configuration command.

Step 4 Enter the clear cable modem all reset global configuration command to force the modems to reregister with the CMTS.

Notice that the cable modems are assigned temporarily the CMTS-defined PRE_REGISTRATION QoS profile with index 2 until the cable modems register with the CMTS.

Step 5 Use the debug cable reg command to see that the provisioned QoS parameters of the modems are overwritten at the CMTS during registration.

Notice that at the end of the registration, the modem gets the user-enforced QoS profile as indicated by the show cable modem and show cable qos profile commands.

For additional information, refer to the cable qos permission enforce command reference page in the Cisco IOS Multiservice Applications Command Reference.

Managing Cable Modems on the HFC Network

You can manage the cable modems connected to the Cisco uBR7200 series on the HFC network by performing the optional tasks in the following sections:

•Configuring Sync Message Interval (Optional)

•Configuring Telco Return (Optional)

•Activating Cable Modem Authentication (Optional)

•Activating Cable Modem Upstream Address Verification (Optional)

•Activating Cable Modem Insertion Interval (Optional)

•Configuring the Maximum Number of Hosts Attached to a Cable Modem (Optional)

•Configuring Cable Modem Registration Timeout (Optional)

•Clearing and Resetting Cable Modems (Optional)

•Clearing Cable Modem Counters (Optional)

•Using Ping DOCSIS (Optional)

Note The default values for the commands used in these configuration steps are adequate in most cases to configure the Cisco uBR7200 series.

Cisco IOS Multiservice Applications Configuration Guide

MC-585

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Contents MC-519 Configuring Headend Broadband Access Router FeaturesMC-520 Headend OverviewTopology of a Typical Broadband Network Voice over IP Services MC-523 Telco ReturnTOD MC-524MC-525 QoS FeaturesService Class Profiles Multiple Service IDsQoS Profile Enforcement TAG/NetFlow SwitchingMC-526 Netflow Switching Tag SwitchingMC-527 Committed Access Rate CAR Security FeaturesWeighted Random Early Detection Weighted Fair QueueingMC-529 Cable Modem and Multicast Authentication Using RadiusDocsis Baseline Privacy Upstream Address VerificationMC-530 Traffic Shaping FeaturesOperations and Provisioning Features Dynamic RangingCPE Limitation Downstream Channel ID ConfigurationBurst Profile Configuration Downstream Frequency OverrideSpectrum Management MC-533 Headend Broadband Access Router Configuration PrerequisitesMC-534 Headend Broadband Access Router Configuration TasksActivating the Downstream Carrier Configuring the Downstream Cable InterfaceCMTS01# configure terminal CMTS01config# interface cable 6/0MC-536 Setting the Downstream Center FrequencyTroubleshooting Tips Verifying the Downstream CarrierVerifying the Downstream Center Frequency CMTS01config-if#cable downstream frequencyMC-537 MC-538 Setting the Downstream Channel IDSetting the Downstream Mpeg Framing Format Annex B Verifying the Downstream Channel IDMC-539 Setting the Downstream ModulationVerifying the Downstream Mpeg Framing Format Verifying the Downstream ModulationMC-540 Setting the Downstream Interleave DepthCMTS01config-if#cable downstream interleave-depth Verifying the Downstream Interleave DepthVerifying the Downstream Helper Address Setting the Downstream Helper AddressMC-541 MC-542 Setting Downstream Rate LimitingVerifying Downstream Rate Limiting Configuring the Upstream Cable InterfaceMC-543 MC-544 Setting the Upstream FrequencyMC-545 Verifying the Upstream FrequencyCMTS01# show controllers cable 6/0 u0 Channel-width width Setting the Upstream Channel WidthVerifying Upstream Channel Width MC-546MC-547 Setting the Upstream Input Power LevelMC-548 Verifying the Upstream Input Power LevelActivating Upstream Admission Control Verifying Upstream Admission ControlMC-549 Activating Upstream FECMC-550 Router# more systemrunning-configSpecifying Upstream Minislot Size Verifying Upstream FECVerifying Upstream Minislot Size Activating the Upstream ScramblerMC-551 MC-552 CMTS01config-if#cable upstream usport scramblerCMTS01# more systemrunning-config Verifying the Upstream ScramblerMC-553 Activating Upstream Differential EncodingActivating Upstream Rate Limiting Verifying Upstream Differential EncodingVerifying Upstream Rate Limiting CMTS01config-if#no cable upstream usport rate-limitMC-554 Frequency-adjust averaging percentage Activating Upstream Frequency AdjustmentMC-555 Verifying Upstream Frequency Adjustment Activating Upstream Power AdjustmentMC-556 Continue seconds Activating Upstream Timing AdjustmentVerifying Upstream Power Adjustment MC-557Activating the Upstream Ports Verifying Upstream Timing AdjustmentMC-558 Verifying the Upstream Ports Setting Upstream Backoff ValuesMC-559 Data-backoff automatic CMTS01config-if#cable upstream usport rangeMC-560 Data-backoff start endVerifying Upstream Data Backoff Automatic Configuring and Activating Baseline PrivacyMC-561 CMTS01config-if#cable privacy kek grace-time Configuring KEK PrivacyMC-562 MC-563 Configuring TEK PrivacyVerifying KEK Privacy Verifying TEK PrivacyMC-564 Configuring and Activating Frequency AgilityActivating Baseline Privacy Verifying Baseline PrivacyMC-565 Combiner GroupsMC-566 Frequency Management PolicyMC-567 Determining the Upstream Ports Assigned to a Combiner GroupMC-568 Configuring and Activating Spectrum GroupsCreating Spectrum Groups Verifying Spectrum GroupsMC-569 Command PurposeMC-570 Verifying Frequency Hopping Verifying Spectrum Group ConfigurationMC-571 MC-572 Configuring Spectrum Group CharacteristicsThreshold percent Verifying Spectrum Group CharacteristicsCMTS01config# cable spectrum-group groupnum hop MC-573Verifying Spectrum Group and Upstream Port Assignments Activating IP Address Resolution ProtocolAssigning the Spectrum Group and the Upstream Ports Activating Cable ARP RequestsVerifying ARP Requests Activating Host-to-Host Communication Proxy ARPMC-575 Verifying Cable Proxy ARP Requests Configuring Dhcp OptionsActivating Cable Proxy ARP Requests Activating Cable Relay AgentVerifying Dhcp giaddr Activation Activating Dhcp giaddrMC-577 Verifying ToD Service Setting Service OptionsSetting Optional IP Parameters Configuring ToD ServiceMC-579 Activating IP Multicast EchoActivating IP Broadcast Echo Verifying IP Multicast EchoMC-580 Configuring Cable ProfilesConfiguring Cable Modulation Profiles Verifying IP Broadcast EchoMC-581 Number profileVerifying Cable Modulation Profiles Configuring QoS ProfilesMC-582 MC-583 Verifying QoS ProfilesMC-584 Setting QoS PermissionEnforcing a QoS Profile Assignment Verifying QoS PermissionVerifying a QoS Profile Assignment Managing Cable Modems on the HFC NetworkMC-585 Verifying Sync Message Interval Configuring Sync Message IntervalConfiguring Telco Return Activating Cable Modem AuthenticationActivating Cable Modem Upstream Address Verification Verifying Cable Modem AuthenticationMC-587 MC-588 CMTS01config-if#cable source-verify dhcpActivating Cable Modem Insertion Interval Verifying Cable Modem Upstream Address VerificationVerifying Cable Modem Insertion Interval CMTS01config-if#cable insertion-interval automaticMC-589 Verifying the Maximum Number of Hosts Configuring Cable Modem Registration TimeoutMC-590 Verifying Registration Timeout Clearing and Resetting Cable ModemsMC-591 Clearing Cable Modem Counters Verifying Cable Modem Clearing and ResettingMC-592 MC-593 Using Ping DocsisVerifying that Cable Modem Counters are Cleared Verifying Ping DocsisMC-594 Spectrum Management Configuration ExampleMC-595 Virtual Private Network Configuration ExampleMC-596 MC-597 Ip http server Ip http authentication local No cdp runMC-598 VoIP Configuration ExampleIp subnet-zero No ip domain-lookup MC-599MC-600 Telco Return Configuration ExampleMC-601 Cable telco-return enableCable Reg QoS Profile Enforcement Configuration ExampleCable Modem all reset MC-602MC-603 Troubleshooting Using Cable Flap ListsSetting Cable Flap List Aging CMTS01config# cable flap-list aging daysVerifying Cable Flap List Insertion Time Setting Cable Flap List Insertion TimeSetting Cable Flap List Power Adjustment Threshold Verifying Cable Flap List AgingVerifying Cable Flap List Miss Threshold Setting Cable Flap List Miss ThresholdVerifying Cable Flap List Power Adjustment Threshold CMTS01config# cable flap-list miss-threshold missesMC-606 Setting Cable Flap List SizeClearing Cable Flap List Verifying Cable Flap List Size
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