Cisco SR2016T-NA Reference Manual page 117

Chapter 2 Cisco CMTS Configuration Commands
cable freq-range
To configure the Cisco CMTS router for the range of frequencies that are acceptable on upstreams, use
the cable freq-range command in global configuration mode. To restore the default value (which is
based on the cable interface and on the Annex A/B configuration), use the no form of this command.
Syntax Description european
japanese
north-american
Defaults
no cable freq-range, which defaults to a frequency range based on the Annex configuration:
•
•
Command Modes Global configuration
Command History Release
12.2(15)BC2
Usage Guidelines
In Cisco IOS Release 12.2(15)BC2 and later, the Cisco CMTS router supports three different modes of
operation, depending on the cable interface line cards being used. The range of frequencies that are
allowed in each mode are as follows:
•
•
•
To configure the router so that it supports the proper range of upstream frequencies, use the
freq-range
cable upstream frequency
accept only frequencies that are in the configured range.
OL-1581-08
cable freq-range [european | japanese | north-american]
no cable freq-range
Configures the Cisco CMTS router to accept upstream frequency ranges
that conform with the EuroDOCSIS specifications (5 MHz to 65 MHz).
Configures the Cisco CMTS router to accept upstream frequency ranges
that conform to the extended range used in Japan (5 MHz to 55 MHz).
Configures the Cisco CMTS router to accept upstream frequency ranges
that conform to the DOCSIS specifications (5 MHz to 42 MHz).
Annex A = european (EuroDOCSIS, 5 MHz to 65 MHz)—Supported only on cable interfaces that
support EuroDOCSIS
Annex B = north-american (DOCSIS, 5 MHz to 55 MHz)—All cable interfaces support the 5 MHz
to 42 MHz range. The 42 MHz to 55 MHz range is supported only on certain cable interfaces.
Modification
This command was introduced for the Cisco uBR7246VXR and
Cisco uBR10012 universal broadband routers.
North American DOCSIS (Annex B)—Upstreams use frequencies between 5 MHz and 42 MHz.
This range is supported by all cable interface line cards.
European EuroDOCSIS (Annex A)—Upstreams use frequencies between 5 MHz and 65 MHz.
Japanese Extended Range (Annex B)—Upstreams use frequencies between 5 MHz and 55 MHz.
command. After you have configured the router with the cable freq-range command, the
and cable spectrum-group (interface configuration)
Cisco Broadband Cable Command Reference Guide
cable freq-range
upstream
commands then
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