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Chapter 3
Cisco CMTS Show Commands
Release
12.0(7)XR and
12.1(1a)T1
12.3(9a)BC
Usage Guidelines
The sort options operate differently on the different Cisco CMTS routers. On the Cisco uBR7100 series
and Cisco uBR7200 series routers, the sort options apply to all cable interface line cards and merge the
output into a single display.
On the Cisco uBR10012 router, the sort options apply to individual cable interface line cards. For
example, the sort-time option sorts all of the flap entries on the first cable interface line card (c5/0/0),
then the entries on the second card (c5/1/0), and so forth.
Occasionally, the show cable flap-list command might temporarily show duplicate entries for the same
Note
cable modem. This can occur after a cable modem has gone offline and before it has completed the
registration process and come back online. When the cable modem does reach the online state, the
duplicate entries disappear.
Examples
The following example shows the output of the show cable flap-list command:
router# show cable flap-list
MAC Address
0010.7bb3.fd19
0010.7bb3.fcfc
0010.7bb3.fcdd
Note
The asterisk (*) in the P-Adj field indicates that a power adjustment has been made for that CM. The
exclamation point (!) indicates that the CM has reached its maximum power transmit level and cannot
increase its power level further.
The following example shows the display of flap-list tables sorted by MAC address:
router# show cable flap-list sort-flap
Mac Addr
0010.1eab.2c0b
0010.1eb2.bb07
0010.7b6b.71cd
0010.1eb2.bb8f
The following example shows the display of flap-list tables sorted by time:
Router# show cable flap-list sort-time
Mac Addr
00e0.2222.2202 C4/0 U0
0010.7b6b.57e1 C4/0 U0
OL-1581-08
Modification
The output of this command was enhanced to show that the Cisco CMTS has
detected an unstable return path for a particular CM and has compensated
with a power adjustment. An asterisk (*) appears in the power adjustment
field for a modem when a power adjustment has been made; an exclamation
point (!) appears when the CM has reached its maximum power transmit
level and cannot increase its power level further.
The sort-int and sort-mac options were added.
Upstream
Ins
Hit
Cable5/0/U1
0
2792
Cable5/0/U1
0
19
Cable5/0/U1
0
19
CableIF
Ins
Hit
C6/0 U0
108
318
C6/0 U0
0
293
C6/0 U0
1
288
C6/0 U0
1
295
CableIF
Ins
Hit
464
2069
0
2475
Miss
CRC
P-Adj Flap
281
0
*45
58
4
0
!43
43
4
0
*3
3
Miss
CRC
P-Adj
27
0
0
31
1
1
32
0
0
30
0
0
Miss
CRC
P-Adj
Flap
242
0
421
885 Oct 16 22:47:23
43
0
1041
1041 Oct 16 22:47:04
Cisco Broadband Cable Command Reference Guide
show cable flap-list
Time
Jul 27 16:54:50
Jul 27 16:55:01
Jul 27 16:55:01
Flap
Time
108 Sep 10 15:26:56
1 Sep 10 15:15:49
1 Sep 10 15:12:13
1 Sep 10 15:11:44
Time
3-27
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