Table of Contents
Advertisement
Chapter 2
Cisco CMTS Configuration Commands
cable upstream minislot-size
To specify the minislot size (in ticks) for a specific upstream interface, use the cable upstream minislot-
size command in cable interface configuration mode. To reset the minislot size to the default for the
current channel width setting, use the no form of this command.
Syntax Description
n
size
Defaults
The default settings vary, depending on the upstream's channel width. The default values were changed
in Cisco IOS Release 12.2(15)BC1 and later releases to better optimize data and voice traffic on the
upstream.
Cisco IOS releases before and after Cisco IOS Release 12.2(15)BC1.
Command Modes
Interface configuration (cable interface only)
Command History
Release
11.3(6) NA
12.2(15)CX
OL-1581-08
cable upstream n minislot-size size
no cable upstream n minislot-size
Table 2-12 on page 2-330
Modification
This command was introduced.
Support was added for the Cisco uBR-MC16U/X and Cisco uBR-MC28U/X
cable interface line cards, including support for minislot size of 1 to support
DOCSIS 2.0 A-TDMA and mixed modulation profiles.
Specifies the upstream port number. Valid values start with 0 for the
first upstream port on the cable interface line card.
Specifies the minislot size in time ticks. Valid minislot sizes are:
1—(32 symbols at 6.4MHz channel width) Supported by the
•
Cisco uBR-MC16U/X, Cisco uBR-MC28U/X and
Cisco uBR-MC5X20S/U cable interface line cards when operating
in Advanced TDMA (A-TDMA) DOCSIS 2.0 only mode.
2 (32 symbols at at 3.2 MHz channel width)
•
4 (64 symbols at 3.2 MHz channel width)
•
8 (128 symbols at 3.2 MHz channel width)
•
16 (256 symbols at 3.2 MHz channel width)
•
32 (512 symbols at 3.2 MHz channel width)
•
•
64 (1024 symbols at 3.2 MHz channel width)
•
128 (2048 symbols at 3.2 MHz channel width)
lists the default minislot values for each channel width for
Cisco Broadband Cable Command Reference Guide
cable upstream minislot-size
2-329
Advertisement
Table of Contents
