user manual

Configuring Headend Broadband Access Router Features
Configuring Cable Profiles
MC-580
Cisco IOS Multiservice Applications Configuration Guide
To disable IP broadcast echo (the default setting), enter the no cable ip-broadcast-echo command 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-config command 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.