Supported Platforms
32 Cisco IOS Release 12.0(7)T
Supported Platforms
The Cisco uBR900 series cable access router is a standalone device; it works in conjunction with the
Cisco uBR7246 and the Cisco uBR7223 universal broadband routers.
Prerequisites
In order to use the Cisco uBR900 series cable access router for data-over-cable or voice-over-cable
(VoIP) applications, the following tasks must be completed:
•All required CMTS routing and network interface equipment must be installed, configured, and
operational. This includes all headend routers, servers (DHCP, TFTP and TOD), network
management systems, and/or other configuration or billing systems in use in your network.
•Based on the quality and capacity of your cable plant, your system administrator or network
planner must define your network’s IP address allocation plan; spectrum management plan
outlining the recommended operating parameters to optimize performance; channel plan
identifying the channels available to assign to specific Cisco uBR900 series cable access routers;
and dial plan based on the supported VoIP protocol.
•The CMTS system administrator or appropriate personnel must specify the policy parameters for
the Cisco uBR900 series and all computers and other customer premises devices to be supported
at subscriber sites. Refer to Cisco’s Network Registrar (CNR) product documentation.
•The CMTS system administrator or appropriate personnel must define and push DHCP and
CiscouBR900 series configuration files to the appropriate servers such that each cable access
router, when initialized, can transmit a DHCP request, receive its IP address, obtain its TFTP and
TOD server addresses, and download its configuration file (and updated Cisco IOS image, if
required).
Note The MAC address on the cable access router ensures that each router downloads only the
file(s) intended for it.
•The Cisco uBR900 series cable access router must be physically installed and cabled as follows:
—To the headend via CATV coaxial cable. (High-quality, shielded RF coaxial cable with at
least 80% braid is recommended.)
—To at least one PC via the straight-through yellow Ethernet cable supplied with the cable
access router. Refer to the appropriate cable access router quick start guide for detailed
information.
Note When the Cisco uBR900 series is connected to an Ethernet hub, a crossover cable must be
used. Category 5 UTP (10BaseT Ethernet) cable with RJ-45 connectors is recommended.
Note For subscriber sites that support multiple telephones or fax devices on a telephone line, all
wiring associated with the telephone line extension must be in place. Inside wiring must be in
compliance with the country of operation to prevent degradation of service.