Cisco UBR924 - uBR 924 Router Troubleshooting Tips page 70

debug cable-modem mac
In addition, transmitted REG-REQs are displayed in hex dump format. The output from this
command is very verbose and is usually not needed for normal interface debugging. The command
is most useful when attempting to attach a Cisco uBR924 cable access router to a CMTS that is not
DOCSIS-qualified.
For a description of the displayed fields of each message, refer to the DOCSIS Radio Frequency
Interface Specification, v1.0 (SP-RFI-I04-980724).
uBR924# debug cable mac messages
*Mar 7 01:44:06:
*Mar 7 01:44:06: UCD MESSAGE
*Mar 7 01:44:06: -----------
*Mar 7 01:44:06: FRAME HEADER
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06: MAC MANAGEMENT MESSAGE HEADER
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06: US Channel ID
*Mar 7 01:44:06: Configuration Change Count
*Mar 7 01:44:06: Mini-Slot Size
*Mar 7 01:44:06: DS Channel ID
*Mar 7 01:44:06: Symbol Rate
*Mar 7 01:44:06: Frequency
*Mar 7 01:44:06: Preamble Pattern
*Mar 7 01:44:06: Burst Descriptor 0
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06: Burst Descriptor 1
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06: Burst Descriptor 2
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
*Mar 7 01:44:06:
70 Cisco IOS Release 12.0(5)T
FC
MAC_PARM
LEN
DA
SA
msg LEN
DSAP
SSAP
control
version
type
RSVD
Interval Usage Code
Modulation Type
Differential Encoding
Preamble Length
Preamble Value Offset
FEC Error Correction
FEC Codeword Info Bytes
Scrambler Seed
Maximum Burst Size
Guard Time Size
Last Codeword Length
Scrambler on/off
Interval Usage Code
Modulation Type
Differential Encoding
Preamble Length
Preamble Value Offset
FEC Error Correction
FEC Codeword Info Bytes
Scrambler Seed
Maximum Burst Size
Guard Time Size
Last Codeword Length
Scrambler on/off
Interval Usage Code
Modulation Type
Differential Encoding
Preamble Length
- 0xC2 == MAC Management
- 0x00
- 0xD3
- 01E0.2F00.0001
- 00E0.1EA5.BB60
- C1
- 0
- 0
- 03
- 01
- 02 == UCD
- 0
- 1
- 4
- 8
- 1
- 8
- 20000000
- CC CC CC CC CC CC CC CC CC CC CC CC CC CC 0D 0D
- 1
- 1 == QPSK
- 2 == OFF
- 64
- 56
- 0
- 16
- 0x0152
- 1
- 8
- 1 == FIXED
- 1 == ON
- 3
- 1 == QPSK
- 2 == OFF
- 128
- 0
- 5
- 34
- 0x0152
- 0
- 48
- 1 == FIXED
- 1 == ON
- 4
- 1 == QPSK
- 2 == OFF
- 128