Cisco SR2016T-NA Reference Manual page 345

Chapter 2 Cisco CMTS Configuration Commands
Command Modes Interface configuration (cable interface only)
Command History Release
11.3 NA
12.0(7)XR2 and 12.1(1a)T1
12.1(3a)EC1
12.1(5)EC
12.1(7)CX1
12.2(4)BC1
12.2(8)BC2
12.2(11)CY, 12.2(11)BC3
12.2(15)CX
12.2(15)BC2
Usage Guidelines The cable upstream modulation-profile command can assign one or two modulation profiles to an
upstream port, depending on the type of cable interface and Cisco IOS software release being used.
Static Modulation Profile (single profile)
The cable upstream modulation-profile command can assign a single modulation profile to an
upstream port on the Cisco uBR7100 series routers and on all cable interface line cards that are available
for the Cisco CMTS routers. This modulation profile affects all CMs and set-top boxes that are using
that upstream port.
Dynamic Upstream Modulation (dual profiles)
When the cable upstream modulation-profile command assigns two modulation profiles to an
upstream port, it activates the Dynamic Upstream Modulation feature. This feature operates differently,
depending on the Cisco IOS software release and the cable interface line card that is providing the
upstream port:
•
OL-1581-08
The upstream port is on a Cisco uBR7100 series router or on a Cisco uBR-MC1xC,
Cisco uBR-MC28C, or Cisco uBR-MC16E line card that is used on Cisco CMTS router running
Cisco IOS Release 12.1(3a)EC1 or later release.
When using the Dynamic Upstream Modulation feature, the primary modulation profile is the
default profile. The line card tracks the upstream signal quality by monitoring the signal-to-noise
ratio (SNR) value and forward error correction (FEC) counters for the upstream. When the noise on
Modification
This command was first introduced.
This command was introduced into the Cisco IOS Release 12.0 and
Release 12.1 trains, replacing the previous version of the
upstream modulation-profile
This command was modified to add the optional secondary-profile-
number parameter to enable the Dynamic Upstream Modulation
feature.
This command was introduced for the Cisco uBR7100 series
universal broadband routers.
This command was enhanced for the Cisco uBR-MC16S line card.
Support for this command was added for the Cisco IOS
Release 12.2 BC train.
Support for this command was added for the Cisco uBR-MC16S and
Cisco uBR-LCP2-MC16S line cards.
Support was added for the Cisco uBR10-MC5X20S cable interface
line card on the Cisco uBR10012 router.
Support was added for the Cisco uBR-MC16U/X and
Cisco uBR-MC28U/X cable interface line card, including DOCSIS
2.0 A-TDMA and mixed modulation profiles.
Support was added for DOCSIS 2.0 A-TDMA and mixed modulation
profiles on the Cisco uBR-MC5X20S/U cable interface line cards.
Cisco Broadband Cable Command Reference Guide
cable upstream modulation-profile
command.
cable
2-333