Cisco Cisco IOS Software Release 12.1(3)EC
Cisco uBR7200 Series Dynamic Upstream Modulation
Supported Platforms
5
Cisco IOS Release 12.1(3a)EC1
Supported Platforms
•
Cisco uBR7223 with Cisco uBR-MC1xC or Cisco uBR-MC16S cable modem cards
•
Cisco uBR7246 with Cisco uBR-MC1xC or Cisco uBR-MC16S cable modem cards
•
Cisco uBR7246 VXR with Cisco uBR-MC1xC or Cisco uBR-MC16S cable modem cards
Supported Standards, MIBs, and RFCs
Standard
DOCSIS 1.0.
MIBs
•
This feature is supported by Cisco uBR7200 series MIBs and DOCSIS MIBs enhancing the
manageability of customer infrastructures.
manageability of customer infrastructures.
For descriptions of supported MIBs and how to use MIBs, see the Cisco MIB web site on CCO at
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
RFCs
No new or modified RFCs are supported by this feature.
Prerequisites
•
Verify that you are using the Cisco IOS software release that supports the Cisco uBR-MC1xC or
Cisco uBR-MC16S cable modem card.
Cisco uBR-MC16S cable modem card.
•
Ensure your network is designed to support reliable broadband data transmission.
At minimum, your network must include:
–
Computer on the WAN side of your Cisco uBR7200 series configured as a Dynamic Host
Configuration Protocol (DHCP) server to assign IP addresses to cable modems or set-top boxes
on the hybrid fiber coaxial (HFC) network.
Configuration Protocol (DHCP) server to assign IP addresses to cable modems or set-top boxes
on the hybrid fiber coaxial (HFC) network.
–
Cisco uBR7200 series-compatible IF-to-RF upconverter installed in the downstream data path
at your headend site. The upconverter is installed between the Cisco uBR7200 series and the
combiner.
at your headend site. The upconverter is installed between the Cisco uBR7200 series and the
combiner.
The combiner refers to all cables, amplifiers, and taps at the headend or cable distribution
center that connect the Cisco uBR7200 series to the HFC network.
center that connect the Cisco uBR7200 series to the HFC network.
–
Diplex filters installed in the downstream RF path between the cable modems and the cable
modem cards in the Cisco uBR7200 series. RG-59 headend coaxial cable with the maximum
braid available (60 percent + 40 percent braid), double foil, and the correct connector for this
cable.
modem cards in the Cisco uBR7200 series. RG-59 headend coaxial cable with the maximum
braid available (60 percent + 40 percent braid), double foil, and the correct connector for this
cable.
•
Complete a basic configuration of the Cisco uBR7200 series as described in the Cisco uBR7200
Series Universal Broadband Router Software Configuration Guide.
Series Universal Broadband Router Software Configuration Guide.
•
Due to the nature of CATV technology, upstream noise management is a significant issue. Cisco
recommends that you follow rigorous North American plant maintenance procedures documented
in the NCTA Supplement on Upstream Transport Issues to adjust return amplifiers and lasers.
recommends that you follow rigorous North American plant maintenance procedures documented
in the NCTA Supplement on Upstream Transport Issues to adjust return amplifiers and lasers.