Cisco Systems uBR7200 Configuring Cable Profiles, Configuring Cable Modulation Profiles, MC-580

Configuring Headend Broadband Access Router Features

Configuring Cable Profiles

To disable IP broadcast echo (the default setting), enter the no cable ip-broadcast-echocommand in cable interface configuration mode.

Verifying IP Broadcast Echo

To verify whether IP broadcast echo has been activated or deactivated, enter the more system:running-configcommand and look for a notation in the cable interface configuration information as shown in the following 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 ip-broadcast-echo

cable insertion-interval 150000 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 entered cable interface configuration mode.

Configuring Cable Profiles

The following sections describe optional cable profile configuration tasks:

•Configuring Cable Modulation Profiles (Optional)

•Configuring QoS Profiles (Optional)

•Setting QoS Permission (Optional)

•Enforcing a QoS Profile Assignment (Optional)

Configuring Cable Modulation Profiles

This section describes how to define the elements that are used in a cable modulation profile. The Cisco uBR7200 series router supports up to eight cable modulation profiles. Profile 1 is the default.

Caution If you change a cable modulation profile, you also make changes to the physical layer. Changing physical layer characteristics affects router performance and function; therefore, this task should only be performed by an expert.

Cisco IOS Multiservice Applications Configuration Guide

MC-580