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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 3 Cisco CMTS Show Commands
show cable modulation-profile
Usage Guidelines
The
show cable modulation-profile
command displays modulation profile group information. A
modulation profile is a collection of burst profiles that are sent out in a Upstream Channel Descriptor
(UCD) message to configure a modem’s transmit parameters for an upstream message burst type.
Table 3-35
shows the IUC codes for each burst type:
Modulation Profile Ranges
The ranges for modulation profiles depends on the cable interface being used and the type of modulation
profile being created.
Table 3-36
lists the valid ranges according to cable interface and modulation type:
12.1(3a)EC
This
reqdata
type was added as a placeholder for scripts that might
reference it, but the DOCSIS MAC scheduler on the Cisco CMTS does not
use this type of burst.
12.2(15)CX
Support was added for the Cisco uBR-MC28U/X cable interface line card,
including support for DOCSIS 2.0 A-TDMA and mixed modulation profiles.
This includes adding additional information to the command’s display, as
well as adding the
a-long
,
a-short
,
a-ugs
, and
verbose
options.
12.2(15)CX1
Added the ability to display the modulation profiles being used by a
particular cable interface and upstream.
12.2(15)BC2
This command displays all default modulation profiles 1, 21, 41, 101, 121,
201, 221, and 241), even when the cable interface card that is associated with
those profiles is not installed. Previous releases displayed only the default
modulation profiles that were in use.
Release
Modification
Table 3-35 Internal Usage Code Types
IUC Type
IUC
Type
IUC 1
Request Burst (
req
)
IUC 7
Not used
IUC 2
Request/Data Burst (
reqdata
)
1
1.
The Cisco CMTS recognizes the
reqdata
burst type but does not use it.
IUC 8
Not used
IUC 3
Initial Ranging Burst (
initial
)
IUC 9
Advanced Phy Short Grant Burst
(
a-short
)
IUC 4
Station Ranging Burst (
station
) IUC 10
Advanaced Phy Long Grant
Burst (
a-long
)
IUC 5
Short Grant Burst (
short
)
IUC 11
Advanaced Phy Unsolicited
Grant Burst (
a-ugs
)
IUC 6
Long Grant Burst (
long
)
IUC 12
Not used
Table 3-36 Allowable Ranges for Modulation Profiles
Cable Interface
DOCSIS 1.X (TDMA)
Mixed DOCSIS 1.X/2.0
DOCSIS 2.0 (A-TDMA)
Cisco uBR7100 series
1 to 10
1
, default=1
N/A
N/A
Cisco uBR-MC16C
1 to 10, default=1
N/A
N/A
Cisco uBR-MC16S
1 to 10, default=1
N/A
N/A
Cisco uBR-MC28C
1 to 10, default=1
N/A
N/A
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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 ...