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Cisco Broadband Cable Command Reference Guide
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Chapter 5 Cisco CMTS Debugging Commands
debug cable map
The following shows typical output for the
debug cable map error
command:
Router#
debug cable int cable 4/0
Router#
debug cable map error
CMTS map errors debugging is ON
Router#
00:11:21: ##### Bad IE-offset for prenull IE[1]
#####---------------------- MAP MSG ---------------------
us_ch_id: 1 ucd_count: 11 num_elems: 4 reserved: 0
Alloc Start Time: 20007713 Ack Time: 20007291
Rng_bkoff_start: 0 Rng_bkoff_end: 3
Data_bkoff_start: 0 Data_bkoff_end: 4
sid:16383 iuc:1 mslot_offset:0
sid:16383 iuc:1 mslot_offset:0
sid:16383 iuc:1 mslot_offset:158
sid:0 iuc:7 mslot_offset:160
Related Commands
Table 5-5
debug cable map Field Descriptions
Field Description
sent 5000 MAPs
Total number of maps transmitted.
MAPs had grant(s) Long Grants
Total number of grants considered long-sized by CMTS.
Total Short Grants
Total number of grants considered short-sized by CMTS.
us_ch_id
Identifies the upstream channel ID for this message.
ucd_count
Number of upstream channel descriptors (UCDs).
num_elems
Number of information elements in the map.
reserved
Reserved for alignment.
Alloc Start Time
Start time from CMTS initialization (in minislots) for assignments
in this map.
Ack Time
Latest time from CMTS initialization (in minislots) processed in
upstream. The CMs use this time for collision detection.
Rng_bkoff_start
Initial backoff window for initial ranging contention, expressed as
a power of 2. Valid values are from 0 to 15.
Rng_bkoff_end
Final backoff window for initial ranging contention, expressed as a
power of 2. Valid values are from 0 to 15.
Data_bkoff_start
Initial backoff window for contention data and requests, expressed
as a power of 2. Valid values are from 0 to 15.
Data_bkoff_end
Final backoff window for contention data and requests, expressed
as a power of 2. Valid values are from 0 to 15.
sid
Service ID.
iuc
Interval usage code (IUC) value.
mslot_offset
Minislot offset.
Command Description
show controllers cable
Displays interface controller information for the specified slot.