Configuring Headend Broadband Access Router Features

Managing Cable Modems on the HFC Network

Command

Purpose

 

 

CMTS01(config-if)#cable registration-timeout n

Specifies the maximum number of minutes that can elapse with no

 

upstream activity before a cable modem is declared inactive and the

 

connection terminated. Valid range is from 2 to 60 minutes.

 

Default = 3 minutes.

 

 

Verifying Registration Timeout

To verify the registration timeout interval for a cable modem on a particular interface, enter the more system:running-configcommand and look for a notation in the cable interface configuration information as shown in this command output excerpt:

CMTS01# more system:running-config

Building configuration...

Current configuration:

!

interface Cable6/0

ip address 1.1.1.1 255.255.255.0 no keepalive

cable insertion-interval 2000

cable downstream

annex B

cable downstream

modulation 64qam

cable downstream

interleave-depth 32

cable downstream

symbol-rate 5056941

cable upstream 0

frequency 15008000

cable upstream 0

fec

cable upstream 0

scrambler

no cable upstream 0 shutdown

Troubleshooting Tips

To troubleshoot the configuration, make sure that you entered the correct slot and port numbers when you typed the command.

Clearing and Resetting Cable Modems

To remove a single cable modem (or all cable modems) from the Station Maintenance List and reset the cable modem (or all cable modems) on the network, use one of the following commands in cable interface configuration mode:

Cisco IOS Multiservice Applications Configuration Guide

MC-591

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Cisco Systems uBR7200 manual Clearing and Resetting Cable Modems, Verifying Registration Timeout, MC-591