Installation guide

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Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
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Chapter 2 Configuring the Cisco CMTS for the First Time
Understanding Configuration Fundamentals
• Ensure DHCP and DOCSIS configuration files have been created and pushed to appropriate servers
so that each cable modem, when initialized, can:
– transmit a DHCP request
– receive an IP address
– obtain TFTP and ToD server addresses
– download a DOCSIS configuration file (or updated software image if using Cisco uBR924 cable
access routers or Cisco uBR910 cable data service units in your network)
• Ensure customer premises equipment (CPE)—cable modems or set top boxes, PCs, telephones, or
facsimile machines—meet requirements for your network and service offerings.
• Be familiar with your channel plan to assign appropriate frequencies. Outline your strategies for
setting up bundling or VPN solution sets if applicable to your headend or distribution hub. Know
your dial plan if using H.323 for VoIP services and setting up VoIP-enabled CM configuration
files.As appropriate, obtain:
– passwords
– IP addresses
– subnet masks
– device names
After these prerequisites are met, you are ready to configure the Cisco uBR7100 series CMTS. This
includes, at a minimum, configuring a host name and password for the Cisco uBR7100 series router and
configuring the CMTS to support IP over the cable plant and network backbone.
Understanding Configuration Fundamentals
This section describes the basic parameters of using passwords, and initial configuration utilities that the
Cisco uBR7100 series routers support:
• “Using the Enable Secret and the Enable Password” section on page 2-3
• “Configuring the Cisco uBR7100 Series CMTS Using AutoInstall” section on page 2-7
• “Configuring Using the setup Facility” section on page 2-7
• “Configuring Using the Configuration Mode” section on page 2-15
Note These sections provide minimal configuration instructions. For additional configuration information,
refer to subsequent chapters in this guide. For examples of Cisco uBR7100 series configuration files,
refer to the Chapter 4, “Configuring Basic Broadband Internet Access.”
Tip Be sure you have appropriate addresses and values based on your network before you attempt to
configure the router. Enter the show version command to display the release of Cisco IOS software on
your router.