user manual

Configuring Headend Broadband Access Router Features
Managing Cable Modems on the HFC Network
MC-591
Cisco IOS Multiservice Applications Configuration Guide
Verifying Registration Timeout
To verify the registration timeout interval for a cable modem on a particular interface, enter the more
system:running-config command 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:
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.