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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 3 Cisco CMTS Show Commands
show cable modem unregistered
A pound sign (#) in the MAC State column indicates that the cable tftp-enforce mark-only command
has been used to require that a CM attempt a TFTP download of the DOCSIS configuration file before
registering, but the CM did not do so (Cisco IOS Release 12.1(11b)EC1 and Cisco IOS
Release 12.2(8)BC2 or later releases).
Tip
The show cable modem command displays the CM timing offset in DOCSIS ticks, while other
commands, such as cable map-advance , display the offset in microseconds. Use the following method
to convert microseconds to DOCSIS ticks:
ticks = microseconds*64/6.25
.
Table 3-33 describes the major fields shown in the show cable modem unregistered displays:
Tip
In Cisco IOS Release 12.1(12)EC, Release 12.2(8)BC1, and later releases, you can add a timestamp to
show commands using the exec prompt timestamp command in line configuration mode.
Table 3-33 Descriptions for the show cable modem unregistered Fields
Field Description
Interface The cable interface line card providing the upstream for this CM.
Prim SID The primary SID assigned to this CM.
Online State The current state of the MAC layer (see Table 3-15 on page 3-60 ).
Timing Offset The timing offset for the CM, in ticks, as recognized on the CMTS. (A tick,
as used here, is 6.25/64 microseconds.) This is the delay between when a
particular cable modem is scheduled to make a transmission and when the
CMTS actually receives it.
Note
An exclamation point (!) in the Timing Offset column indicates that
the CM has exceeded the maximum delay and timing offset specified
by the
cable map-advance command.
Note
The timing offset shown here is typically smaller than the TX Time
Offset value shown by the
show cable modem remote-query
command, because the latter value is the offset as recognized on the
CM (which will include any internal delay between when the CM
software begins the transmission and when the bits actually appear on
the local cable interface).
Rec Power The received power level (in dB) for the CM.
Note
An asterisk (*) in the RxPwr column indicates that a power
adjustment has been made for that CM. An exclamation point (!)
indicates that the CM has reached its maximum power transmit level
and cannot increase its power level further.
QoS Displays the QoS profile assigned to the CM (DOCSIS 1.1 and DOCSIS 2.0
CMs only).
CPE Indicates the number of CPE devices for which the CM is providing services.
IP Address The IP address that the DHCP server has assigned to the CM.
MAC Address The MAC address for the CM.