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show cable flap-list
Table 3-8
Table 3-8
Field
Mac Addr
CableIF
Ins
Hit
Miss
CRC
P-Adj
Flap
Time
In Cisco IOS Release 12.1(12)EC, Release 12.2(8)BC1, and later releases, you can add a timestamp to
Tip
show commands using the exec prompt timestamp command in line configuration mode.
Related Commands
Command
cable flap-list aging
cable flap-list
insertion-time
cable flap-list miss-
threshold
cable flap-list power-
adjust threshold
cable flap-list size
clear cable flap-list
Cisco Broadband Cable Command Reference Guide
3-28
describes the fields displayed by the show flap-list command.
show cable flap-list Command Field Descriptions
Description
The MAC address for the CM.
The cable interface line card, including upstream, for this CM.
The number of times the CM comes up and inserts itself into the
network. It can indicate intermittent downstream sync loss or
DHCP or modem registration problems.
The number of times the CM responds to MAC layer keepalive
messages. (The minimum hit rate is once per 30 seconds. It can
indicate intermittent upstream, laser clipping, or common-path
distortion.
The number of times the CM misses the MAC layer keepalive
message. An 8 percent miss rate is normal for the Cisco cable
interface line cards. It can indicate intermittent upstream, laser
clipping, or common-path distortion.
The number of cyclic redundancy check (CRC) errors from this
CM. It can indicate intermittent upstream, laser clipping, or
common-path distortion.
The number of times the headend instructed the CM to adjust
transmit (TX) power more than 3 dB. It can indicate amplifier
degradation, poor connections, or thermal sensitivity.
The sum of P-Adj and Ins values. CMs with high flap counts have
high SIDs and might not register.
The most recent time that the CM dropped the connection.
Description
Specifies the number of days to keep a CM in the flap-list table before aging
it out of the table.
Sets the insertion time interval that determines whether a CM is placed in the
flap list.
Specifies the miss threshold for recording a flap-list event.
Specifies the power-adjust threshold for recording a CM flap-list event.
Specifies the maximum number of CMs that can be listed in the flap-list
table.
Clears all the entries in the flap-list table.
Chapter 3
Cisco CMTS Show Commands
OL-1581-08
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