Installation guide

CHAPTER

3-1

Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide

OL-2238-03

Configuring the Cisco Cable Interface

The Cisco IOS software command-line interface (CLI) can be used to configure the Cisco cable modem

interface for correct operation on the hybrid fiber coax cable (HFC) network. This chapter describes the

following tasks required to configure the Cisco cable modem card.

Note For tasks marked optional below, default settings are typically adequate to configure the system. Change

default settings only with careful prior analysis.

• “Configuring the Downstream Cable Interface” section on page 3-1

• “Configuring the Upstream Cable Interface” section on page 3-9

• “Enabling and Configuring Baseline Privacy” section on page 3-23 (Optional)

• “Configuring and Activating Frequency Agility” section on page 3-28

• “Activating Cable Address Resolution Protocol Requests” section on page 3-35

• “Activating Host-to-Host Communication (Proxy ARP)” section on page 3-36 (Optional)

• “Configuring DHCP Options” section on page 3-37

• “Configuring Time-of-Day Service” section on page 3-38

• “Setting Optional IP Parameters” section on page 3-38 (Optional)

• “Activating Packet Intercept Capabilities” section on page 3-40 (Optional)

• “Configuring Cable Modulation Profiles” section on page 3-41

• “Setting Quality of Service (QoS) for Higher Priority Traffic” section on page 3-46

• “Setting and Viewing Concatenation” section on page 3-52 (Optional)

Configuring the Downstream Cable Interface

The first step in configuring the Cisco CM interface is to configure the downstream cable interface,

which generally entails the downstream frequency, symbol rate, compression, and modulation.

Configuring the downstream cable interface consists of the following specific tasks:

• “Activating the Downstream Carrier” section on page 3-2

• “Setting the Integrated Upconverter” section on page 3-3

• “Setting the Downstream Channel ID” section on page 3-4

• “Setting the MPEG Framing Format” section on page 3-5