Cisco Broadband Cable Command Reference Guide

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show cable modulation-profile
Related Commands
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Table 2-24 show cable modulation-profile Field Descriptions
Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
Field Description
Mo Modulation profile group number. A modulation profile group is the set
of burst profiles that defines upstream transmit characteristics for the
various types of upstream transmission classes.
IUC Interval usage code. Each upstream transmit burst belongs to a class that
is given a number called the interval usage code (IUC). Bandwidth maps
messages (MAP) by IUC codes used to allocate upstream time slots. The
following types are currently defined:
Request—Bandwidth request slot
Request Data—Bandwidth request and short data burst slot
Initial Maintenance—Initial link registration contention slot
Station Maintenance—Link keepalive slot
Short Data Grant—Short data burst slot
Type
Long Data Grant—Long data burst slot
Modulation type.
Preamb length Preamble length.
Diff enco Differential encoding enabled (yes) or not enabled (no).
FEC T bytes Number of bytes that can be corrected for each forward error code (FEC)
code word.
FEC CW size Size, in bytes, of the FEC code word.
Scrambl seed Scrambler seed value in hex format.
Max B size Maximum burst size.
Guard time size Time between successive bursts measured in symbols.
Last CW short Handling of FEC for shortened last code word.
Scrambl Scrambler enabled (yes) or not enabled (no).
Preamb offset The bits to be used for the preamble value.
Tip In Cisco IOS Release 12.1(12)EC, 12.2(8)BC1, and later releases, you can add a timestamp to show
commands using the exec prompt timestamp command in line configuration mode.
Command Description
cable upstream
modulation-profile
Configures a spectrum group to use a specified frequency.
show cable hop Displays CM configuration settings.
show interface cable
sid
Displays cable interface information.
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