Cisco SR2016T-NA Reference Manual page 580

show cable modem errors
Also see the information about this command's behavior in a Hot Standby Connection-to-Connection
Note
Protocol (HCCP) configuration, see the
Protocol (HCCP) Configuration" section on page
Examples
The following example shows sample output for the show cable modem errors command for all CMs
on a particular cable interface.
Router# show cable modem c8/1/0 errors
MAC Address
0050.7366.1243 C8/1/0/U1
0002.b970.0027 C8/1/0/U4
0006.5314.858d C8/1/0/U4
Router#
Table 3-21
Table 3-21 Descriptions for the show cable modem errors Fields
Field
MAC Address
I/F
CRC
HCS
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 modem vendor
show cable modem
show cable modem
cnr
show cable modem
connectivity
Cisco Broadband Cable Command Reference Guide
3-84
I/F CRC
0
0
8
describes the fields shown in the show cable modem errors displays:
Description
The MAC address for the CM.
The cable interface line card, including the upstream, for this CM.
Number of times the CMTS upstream receiver flagged a packet with a cyclic
redundancy check (CRC) error from this CM. CRC errors usually indicate
downstream signal interruption or interference noise on a plant. Occasional
CRC errors can always be expected, but a high number of CRC errors could
indicate plant problems such as intermittent upstream problems, laster
clipping, common-path distortion, or impulsive noise or interference.
Number of times the CMTS upstream receiver flagged a packet with a header
checksum (HCS) error from this CM. HCS errors could indicate the same sort
of plant problems as CRC errors.
Description
Associates the name of a vendor with its Organizational Unique Identifier
(OUI).
Displays information for the registered and unregistered CMs.
Displays information about the upstream carrier-to-noise ratio (CNR) for a
particular cable modem.
Displays connectivity statistics for one or more CMs.
"Operation with Hot Standby Connection-to-Connection
3-54.
HCS
1
0
3
Chapter 3 Cisco CMTS Show Commands
OL-1581-08