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Cisco Broadband Cable Command Reference Guide
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Chapter 3 Cisco CMTS Show Commands
show cable modem cnr
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.
Related Commands
Prim SID
The primary SID assigned to this CM.
snr/cnr
The current upstream carrier-to-noise ratio (CNR) or signal-to-noise ratio
(SNR) for this particular CM, in decibels (dB). In Cisco IOS Release
12.2(15)BC1 and later releases, this field shows “-----” for offline cable
modems.
Note
You can also use the
show controllers cable
command to display the
signal-to-noise ration (SNR) or CNR for a cable interface line card,
but this value is only an estimate because it uses a random sampling
of modems to determine the average for the card at any particular
time. The CNR value shown by the
show controllers cable
command
can therefore appear to fluctuate compared to the individual values
shown by the
show cable modem cnr
command.
Table 3-18 Descriptions for the show cable modem cnr Fields (continued)
Field
Description
Command
Description
cable modem vendor
Associates the name of a vendor with its Organizational Unique Identifier
(OUI).
show cable modem
Displays information for the registered and unregistered CMs.
show interface cable
modem
Displays information about the CMs connected to a particular cable
interface.
show cable modem
remote-query
Displays information collected by the remote-query feature.
show cable
modulation-profile
Displays modulation profile group information.
show controllers cable
Displays information about the interface controllers for a cable interface on
the Cisco CMTS router.
show interface cable
sid
Displays cable interface information.