Cisco SR2016T-NA Reference Manual page 327

Chapter 2 Cisco CMTS Configuration Commands
Table 2-11 Allowable Frequency Range for the cable upstream frequency Command
Frequency Range
5 to 42 MHz
5 to 55 MHz
5 to 65 MHz
In Cisco IOS Release 12.2(15)BC2 and later releases, the allowable range of frequencies that you can
Note
select with the cable upstream frequency command is determined by the configuration of the
freq-range
If both a Cisco uBR-MC16E cable interface line card and a Cisco uBR-MC16C and/or a
Tip
Cisco uBR-MC16S cable interface line card are present in the chassis, a spectrum group in the 42 MHz
to 65 MHz range should not be assigned.
To configure the default upstream frequency (which is no fixed frequency), enter the cable upstream n
frequency command without specifying a center frequency.
Examples The following example shows how to configure the upstream center frequency for port 0, located in slot
6, to 5,700,000 Hz:
Router(config-if)# cable upstream 0 frequency 5700000
Router(config-if)# exit
Router(config)# exit
Router# show running-config | include frequency
cable upstream 0 frequency 5696000
Router#
Cisco cable interface line cards always program the upstream's center frequency in 16 KHz increments,
Note
and this is the frequency displayed by the lines added to the router's configuration and by the show
controllers cable upstream command. For example, if you use the
command to specify a center frequency of 27 MHz (cable upstream x frequency 27000000), the actual
center frequency will be 27.008 MHz, which is the next highest 16 KHz boundary. The configuration file
will therefore show the line cable upstream 0 frequency 27008000.
OL-1581-08
Supported Cable Interfaces
All supported cable interfaces
Cisco uBR-MC16U/X,
Cisco uBR-MC28U/X,
Cisco uBR-MC5X20U
Cisco uBR-MC16E,
Cisco uBR-MC16U/X,
Cisco uBR-MC28U/X,
Cisco uBR-MC5X20U,
Cisco uBR7111E and
Cisco uBR7114E routers
command.
Minimum Cisco IOS Releases
All releases supported for the
Cisco CMTS
Cisco IOS Release 12.2(15)BC2
Cisco IOS Release 12.0(13)SC,
12.1(4)EC, and 12.2(4)BC1
cable upstream frequency
Cisco Broadband Cable Command Reference Guide
cable upstream frequency
upstream
2-315