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Cisco Broadband Access Center for Cable Installation Guide 2.7
OL-19105-01
Chapter 4 Installing in a Lab Environment
Configuring Network Registrar and a CMTS
Caution After installation is complete, you must install your licenses and the chain of certificates or the KDC
will not start.
Configuring Network Registrar and a CMTS
For BACC to function, you need to set up Network Registrar client-classes, policies, scopes, and
selection tags. You also need to perform some configuration of CMTS devices.
To configure Network Registrar and CMTS devices, complete these steps:
Step 1 Set up scopes on your Network Registrar server. For example:
<NR_HOME>/usrbin/nrcmd -N <USER_NAME> -P <PASSWORD> -b <
<BACC_HOME>/cnr_ep/samples/bpr_cnr_hsd_sample_config.nrcmd
Note The <BACC_HOME>/cnr_ep/samples/bpr_cnr_hsd_sample_config.nrcmd command runs a
sample Network Registrar configuration script, which defines client-classes, policies, scopes,
selection tags and other related information. You must update this file to reflect the IP address
settings on your network. For more information about this file, see
“Network Registrar
Configuration File Example”. For more detailed information about defining client-classes,
policies, scopes, and selection tags, see the Network Registrar User’s Guide.
Step 2 Enable the cable interface or interfaces on your CMTS with the correct IP addresses and DHCP
helper-address. For example, you might edit the CMTS configuration as follows:
interface Cable3/0
ip address 192.168.5.0 255.255.255.0
ip address 192.168.6.0 255.255.255.0 secondary
ip address 192.168.7.0 255.255.255.0 secondary
ip address 192.168.8.0 255.255.255.0 secondary
Note The IP addresses used here are identical to those in the sample script supplied with the BACC
product. You must edit these addresses to match your own IP address range. Do not attempt to
use these IP addresses in an operational environment.
no ip directed-broadcast
no keepalive
cable downstream annex B
cable downstream modulation 64qam
cable downstream interleave-depth 32
cable downstream frequency 477000000
cable upstream 0 frequency 26000000
cable upstream 0 power-level 0
no cable upstream 0 shutdown
cable dhcp-giaddr primary
cable helper-address <IP Address Of Your Network Registrar Server>
Note A sample configuration script file is included with the BACC product. This file, called
cmts_sample.cfg, is located in the <BACC_HOME>/cnr_ep/samples directory.