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Chapter 3
Cisco CMTS Show Commands
show cable modem errors
To display packet header error statistics for one or more CMs, use the show cable modem errors
command in privileged EXEC mode.
Syntax Description
ip-address
mac-address
cable slot/port
cable slot/subslot/port
upstream port
Command Modes
Privileged EXEC
Command History
Release
12.1(4)CX, 12.2(1)XF,
and 12.2(4)BC1
Usage Guidelines
This command displays packet header error information for all CMs, for all CMs attached to a specific
CMTS cable interface, or for a particular CM, as identified by its IP address or MAC address.
In Cisco IOS Release 12.2(15)BC1 and later releases, use the clear cable modem flap-counters
Tip
command to clear these counters.
OL-1581-08
show cable modem [ip-address | mac-address] errors
show cable modem cable slot/port [upstream port] errors
show cable modem cable slot/subslot/port [upstream port] errors
(Optional) Displays error information for a specific CM with the specified
IP address.
(Optional) Displays error information for a specific CM with the specified
MAC address.
(Optional) Displays information for all CMs on the specified cable interface
and downstream port on the Cisco uBR7100 series and Cisco uBR7200
series routers.
On the Cisco uBR7100 series router, the only valid value is 1/0. On the
Cisco uBR7200 series router, slot can range from 3 to 6, and port can be 0
or 1, depending on the cable interface.
(Optional) Displays information for all CMs on the specified cable interface
on the Cisco uBR10012 router. The following are the valid values:
•
•
•
(Optional) Displays information for all CMs using this specific upstream.
You can specify this option only when displaying information for a cable
interface. The valid range for port begins with 0 and ends with a value that
depends on the number of upstream ports on the cable interface line card.
Modification
This command was introduced for the Cisco uBR7100 series,
Cisco uBR7200 series, and Cisco uBR10012 router.
slot = 5 to 8
subslot = 0 or 1
port = 0 to 4 (depending on the cable interface)
Cisco Broadband Cable Command Reference Guide
show cable modem errors
3-83
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