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Prerequisite Tasks

Before you can configure Cisco uBR7246 universal broadband router features, you must first:

•

Note

center that connect the Cisco uBR7246 to the hybrid fiber coaxial (HFC) network.

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Make sure that your current network is designed to support broadband transmission. At the very

least, your network must include the following:

— Computer on the WAN side of your Cisco uBR7246 configured as a DHCP server to assign

IP addresses to cable modems on the HFC network.

— Cisco uBR7246-compatible IF-to-RF upconverter installed in the downstream data path at

your headend site. The upconverter is installed between the Cisco uBR7246 and the

combiner.

The combiner refers to all cables, amplifiers, and taps at the headend or cable distribution

— Diplex filters installed in the downstream RF path between the cable modems and the cable

modem cards in the Cisco uBR7246. Diplex filters are used to convert the single,

bidirectional signals used by cable modems to the two, separate unidirectional signals used

by the cable modem cards.

— RG-59 headend coaxial cable with the maximum braid available (60% + 40% braid), double

foil, and the correct connector for this cable. The center conductor must be straight and

extend 1/8 inch (3.2 mm) beyond the end of the connector and the connector should be

securely crimped to the cable.

Complete a basic configuration of the Cisco uBR7246. This includes, as a minimum, the

following tasks:

— Configure a host name and password for the Cisco uBR7246. For more information about

how to configure a host name and password, refer to the Cisco uBR7246 Universal

Broadband Router Installation and Configuration Guide.

— Configure the Cisco uBR7246 to support IP. For more information about how to configure

IP, refer to the refer to the "IP Overview," "Configuring IP Addressing," and "Configuring IP

Services" chapters in the Network Protocols Configuration Guide, Part 1.

— Install and configure at least one port adapter to provide WAN connectivity. The

Cisco uBR7246 supports the following port adapters: 4-port 10BASE-T Ethernet, 8-port

10BASE-T Ethernet, 100BASE-T Fast Ethernet, ATM, and HSSI.

For information about installing and configuring the 4-port 10BASE-T port adapter, refer to

the 4-E Ethernet 10BASE-T Port Adapter Installation and Configuration document.

For information about installing and configuring the 8-port 10BASE-T port adapter, refer to

the 8-E Ethernet 10BASE-T Port Adapter Installation and Configuration document.

For information about installing and configuring the 100BASE-T Fast Ethernet port adapter,

refer to the 100BASE-T Fast Ethernet Port Adapter Installation and Configuration

document.

For information about installing and configuring the ATM port adapter, refer to the ATM Port

Adapter Installation and Configuration document.

For information about installing and configuring the HSSI port adapter, refer to the HSSI Port

Adapter Installation and Configuration document.

Configuring Cisco uBR7246 Universal Broadband Router Features VC-137

List of Terms