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debug cable ucd
debug cable ucd
To debug upstream channel descriptor (UCD) messages, use the debug cable ucd command in privileged
EXEC mode. To disable debugging output, use the no form of this command.
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Release
11.3NA
Usage Guidelines
This command activates debugging of any upstream channel descriptor (UCD) messages. UCD messages
contain information about upstream channel characteristics and are sent to the CMs on the HFC network.
Cable modems that are configured to use enhanced upstream channels use these UCD messages to
identify and select an enhanced upstream channel to use. When this command is activated, any messages
related to upstream channel descriptors are displayed on the Cisco CMTS console.
Examples
The following is typical output from the debug cable ucd command:
UCD MESSAGE
-----------
FRAME HEADER
MAC MANAGEMENT MESSAGE HEADER
US Channel ID
Configuration Change Count
Mini-Slot Size
DS Channel ID
Symbol Rate
Frequency
Preamble Pattern
CC 0D 0D
Burst Descriptor 0
Cisco Broadband Cable Command Reference Guide
5-84
debug cable ucd
no debug cable ucd
FC
MAC_PARM
LEN
DA
SA
msg LEN
DSAP
SSAP
t
control
version
type
Interval Usage Code
Modulation Type
Modification
This command was introduced.
- 0xC2 ==
- 0x00
- 0xD3
- 01E0.2F00.0001
- 0009.0CEF.3730
- C1
- 0
- 0
- 03
- 01
- 02 ==
- 1
- 5
- 4
- 1
- 8
- 10000000
- CC CC CC CC CC CC CC CC CC CC CC CC CC
- 1
- 1 == QPSK
Chapter 5
Cisco CMTS Debugging Commands
OL-1581-08
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