Installation guide

4-6
Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
OL-2238-03
Chapter 4 Configuring Basic Broadband Internet Access
EuroDOCSIS Operation
In this case, the user has configured modulation profile number “3” to be available to upstream channels
wherever they are configured to apply it. Note that this modulation profile has been configured to operate
with a QAM-16 modulation scheme. The default modulation scheme for any upstream profile (if it is not
set to QAM-16) is QPSK.
Later in the configuration file example, upstream port 0 on the cable interface card installed in slot 5
utilizes both the spectrum management and the modulation profile configured in the sample.
cable upstream 0 spectrum-group 1
cable upstream 0 modulation-profile 3
EuroDOCSIS Operation
The Cisco uBR7111E and Cisco uBR7114E routers support the EuroDOCSIS channel plans that use an
8 MHz channel width. Key commands that appear in the Cisco uBR7100 series configuration file that
denote EuroDOCSIS operation include:
• cable downstream annex A—Annex A is reserved for EuroDOCSIS operations (Annex B is used
for DOCSIS NTSC operations). Annex A is chosen by default on the Cisco uBR7111E and
Cisco uBR7114E routers.
• cable upstream 0 frequency—The EuroDOCSIS upstream valid range is from 5,000,000 to
65,000,000 Hz.
The following is a typical configuration file for EuroDOCSIS operation:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname UBR7114
!
!
cable modulation-profile 1 request 0 16 1 8 16qam scrambler 152
no-diff 128 fixed uw16
cable modulation-profile 1 initial 5 34 0 48 16qam scrambler 152
no-diff 256 fixed uw16
cable modulation-profile 1 station 5 34 0 48 16qam scrambler 152
no-diff 256 fixed uw16
cable modulation-profile 1 short 6 75 6 8 16qam scrambler 152 no-diff
144 fixeduw8
cable modulation-profile 1 long 8 220 0 8 16qam scrambler 152 no-diff
160 fixeduw8
cable modulation-profile 2 request 0 16 1 8 qpsk scrambler 152 no-diff
64 fixeduw8
cable modulation-profile 2 initial 5 34 0 48 qpsk scrambler 152
no-diff 128 fixed uw16
cable modulation-profile 2 station 5 34 0 48 qpsk scrambler 152
no-diff 128 fixed uw16
cable modulation-profile 2 short 5 75 6 8 qpsk scrambler 152 no-diff
72 fixed uw8
cable modulation-profile 2 long 8 220 0 8 qpsk scrambler 152 no-diff
80 fixed uw8
!
no cable qos permission create
no cable qos permission update
cable qos permission modems
!