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Cisco Broadband Cable Command Reference Guide
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Chapter 2 Cisco CMTS Configuration Commands
cable spectrum-group (interface configuration)
cable spectrum-group (interface configuration)
To assign a default spectrum group to all of the upstreams on a cable interface, use the
cable spectrum-
group
command in interface configuration
mode. To remove the spectrum groups from the upstreams,
use the
no
form of this command.
cable spectrum-group
group-number
no cable spectrum-group
group-number
Syntax Description
Defaults
No default behavior or values.
Command Modes
Interface configuration
Command History
Usage Guidelines
This command assigns a default spectrum group to all of the upstreams on the cable interface. All
upstreams on the interface use this spectrum group unless you override this configuration, using one of
the following commands:
•
To assign a different spectrum group to a particular upstream, use the
cable upstream spectrum-
group
command.
•
To assign a new frequency to a particular upstream, use the
cable upstream frequency
command.
These two commands override the
cable spectrum-group
command for the particular upstreams to
which they are applied. The remaining upstreams in the interface, however, continue to use the default
configuration that is specified by the
cable spectrum-group
command.
Tip
You must first create and configure the spectrum groups before you can assign them to an interface. To
create and configure spectrum groups, use the set of
cable spectrum-group
commands that are available
in global configuration mode.
Examples
The following example shows how to assign spectrum group 1 to all of the upstreams on the cable
interface in slot 3/0:
Router(config)#
interface cable 3/0
group-number
Specifies the spectrum group that should be used as the default group for the
upstreams on this cable interface. The valid range is from 1 to 32, or from 1 to 40,
depending on the Cisco IOS software release.
Release
Modification
11.3 NA
This command was introduced.
12.2(15)BC2
The maximum number of spectrum groups was increased from 32
to 40 groups per router.