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Chapter 2 Cisco CMTS Configuration Commands
cable upstream frequency
cable upstream frequency
To enter a fixed frequency of the upstream radio frequency (RF) carrier for an upstream port, use the
cable upstream frequency
command in cable interface configuration
mode. To restore the default value
for this command, use the
no
form of this command.
cable upstream
n
frequency
up-freq-hz
no cable upstream
n
frequency
up-freq-hz
Syntax Description
Defaults
Dynamic (not fixed frequency)
Command Modes
Interface configuration (cable interface only)
Command History
Usage Guidelines
The upstream channel frequency of your RF output must be set to comply with the expected input
frequency of your cable interface line card. To configure an upstream channel frequency, you may:
•
Configure a fixed frequency between the allowable ranges and enable the upstream port,
or
•
Create a global spectrum group, assign the interface to it, and enable the upstream port.
The allowable range for the upstream channel frequency depends on the cable interface line card and
Cisco IOS software release being used. See
Table 2-11
for the currently supported values.
n
Specifies the upstream port number on the cable interface line card for
which you want to assign an upstream frequency. Valid values start with
0 for the first upstream port on the cable interface line card.
up-freq-hz
The upstream center frequency is configured to a fixed Hertz (Hz) value.
The valid upstream frequency range is 5 MHz (5000000 Hz) to 42 MHz
(42000000 Hz), 55 MHz (55000000 Hz), or 65 MHz (65000000 Hz),
depending on the cable interface line card being used. If you wish to have
the Cisco CMTS dynamically specify a center frequency for the given
upstream interface, do not enter any frequency value.
Release
Modification
11.3 XA
This command was introduced.
12.0(13)SC
Support for the higher EuroDOCSIS upstream range (5 to 65 MHz) was
introduced for the Cisco uBR-MC16E cable interface line card.
12.1(4)EC, 12.2(4)BC1 Support for the higher EuroDOCSIS upstream range (5 to 65 MHz) was
introduced for the Cisco uBR7111E and Cisco uBR7114E routers.
12.2(15)BC2
The allowable range of frequencies that you can select with this command is
determined by the configuration of the
upstream freq-range
command.
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Страница 1216: ...6 214 Cisco Broadband Cable Command Reference Guide OL 1581 07 Chapter 6 Cable CPE Commands debug usb ...
Страница 1266: ...A 50 Cisco Broadband Cable Command Reference Guide OL 1581 07 Appendix A Using the ROM Monitor unset ...