Cisco Systems uBR7200 Series manual Debug Cable Maps, Debug Cable Modems, Debug Cable PHY Messages

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Chapter 4 Troubleshooting the System

Using Cable Interface Debug Commands

To deactivate debugging of cable MAC messages, use the following command:

CMTS01# no debug cable mac-messages

Debug Cable Maps

This command activates debugging of cable maps that identify data on cable interfaces. When this command is activated, messages related to cable maps are displayed on the Cisco uBR7200 series console. The format for the command follows:

CMTS01# debug cable map

To deactivate debugging of cable maps, use the following command:

CMTS01# no debug cable map

Debug Cable Modems

This command activates debugging of cable modems. When this command is activated, messages from cable modems on the HFC network are displayed on the Cisco uBR7200 series console. The format for the command follows:

CMTS01# debug cable modems

To deactivate debugging of cable MAC messages, use the following command:

CMTS01# no debug cable modems

Debug Cable PHY Messages

This command activates debugging of messages generated in the cable PHY—the physical layer where upstream and downstream activity between the Cisco uBR7200 series and the HFC network is controlled. When this command is activated, messages generated in the cable PHY are displayed on the Cisco uBR7200 series console. The format for the command follows:

CMTS01# debug cable phy

To deactivate debugging of the cable PHY, use the following command:

CMTS01# no debug cable phy

Activate QoS Debug

This command activates debugging of QoS. When this command is activated, messages related to QoS parameters are displayed on the Cisco uBR7200 series console. The format for the command follows:

CMTS01# debug cable qos

To deactivate debugging of QoS, use the following command:

CMTS01# no debug cable qos

Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide

 

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Contents Troubleshooting the System Managing Cable Modems on the HFC Network Configure Sync Message IntervalVerify Sync Message Interval Activate Cable Modem AuthenticationVerify Cable Modem Authentication Activate Cable Modem Upstream Address VerificationCMTS01config-if#cable source-verify dhcp CMTS01config-if#no cable source-verifyVerify Cable Modem Upstream Address Verification Automatic CMTS01config-if#no cable insertion-intervalCMTS01config-if#cable insertion-interval max CMTS01config-if#cable insertion-intervalConfigure Per Modem Filters Configure access lists to be specified on a Configure Cable Modem Registration Timeout Clear Cable Modem ResetCMTS01config-if#cable registration-timeout n Clear Cable Modem Counters Verify Clear Cable Modem ResetVerify Clear Cable Modem Counters Configure Traffic ShapingConfigure Downstream Rate Limiting and Shaping Configure Upstream Rate Limiting and ShapingCMTS01# show interface c3/0 sid 1 counters CMTS01config-if#nocable upstream n1 rate-limitBlind Strategies and Time Scheduled Combined Token-bucketGuided Frequency Hop Field Description Sample outputShow Cable Hop Command Spectrum Management Debug and Test Commands14 Show Cable Hop Parameter Descriptions Polling Cable Modems Debug and Test CommandsVerifying Remote Query Information Enable SnmpConfigure Remote Modem Monitoring Allows you to configure accessUnderstanding Show Command Responses General Show CommandsMonitoring and Maintaining Remote Querying Show Cable Modem See the sample command output below Page SID Show Cable Modem Maintenance Cable modem cable 3/0 upstream 0 unregisteredCable modem cable 3/0 upstream 0 offline Show Interface Cable UBR7200#show cable modem maintenanceMTU CRC Router# show interface cable 6/0 downstream Field Description18 Show Interface Cable Upstream Command Field Descriptions ATP Enhanced Show Interface Upstream Output Cable slot 3, port Show Interface Cable SIDConnectivity Router# show interface c3/0 sid counters verboseShow Router# show interface c3/0 sid connectivityRouter# show interface c3/0 sid 1 counters Troubleshooting Using Cable Flap Lists Show Cable QoS ProfileUBR7200#show cable qos profile Page Page UBR7200#show cable flap Display the Flap ListMAC ID Statistic DescriptionPlant troubleshooting. The CRC counter indicates Troubleshoot with the Flap List Verify Cable Flap List Insertion Time Set Cable Flap List AgingSet Cable Flap List Insertion Time Verify Cable Flap List AgingSet Cable Flap List Power Adjustment Threshold Verify Cable Flap List Power Adjustment ThresholdSet Cable Flap List Miss Threshold Verify Cable Flap List Size Set Cable Flap List SizeClear Cable Flap List Verify Cable Flap List Miss ThresholdCustomize Other Flap List Values and Related Commands Performing Amplitude Averaging Enable or Disable Power AdjustmentSyntax Valid Values Set Frequency Threshold to Affect Power AdjustmentSetting Downstream Test Signals Configure Unmodulated Test SignalsStep Command Purpose Pinging Unresponsive Cable Modems Configure Prbs Test SignalsVerify Test Signal Output Step CommandUsing Cable Interface Debug Commands Verify the PingDebug Cable ARP Requests Debug Baseline Privacy Activity Debug Cable MAC Protocol ErrorsDebug Environmental Monitor Messages Activate Debug of Baseline PrivacyActivate QoS Debug Debug Cable MapsDebug Cable Modems Debug Cable PHY MessagesDebug Cable Modem Registration Requests Debug Cable Modem Reset MessagesDebug Cable Modem Ranging Messages Debug Upstream MessagesDebug Upstream Channel Change UCC Messages Debug Spectrum ManagementDebug Channel Allocations Debug Cmts TransmissionsShow diag Show frame-clocks Show tech support Show version Managing the Cisco uBR7246 VXR Clock CardDebug Upstream Channel Description UCD Messages Clear Clock CountersCable clock force primary secondary no cable clock force Force Alternate ClockSet Midplane TDM Clock as Primary Reference Display Clock ValuesShow controllers clock-reference Show Clock Diagnostic InformationShow Clock Hardware Information and Register Values Router# show cable clock33 describes the fields shown in the show diag display Show Clock Frames Show General InformationRouter# show frame-clocks