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Chapter 3
Cisco CMTS Show Commands
show cable logging
To display the log of messages about bad IP source addresses or DOCSIS-layer events on the cable
interfaces, use the show cable logging command in user EXEC or privileged EXEC mode.
Syntax Description
badipsource
layer2events
summary
slot
Command Modes
User EXEC, Privileged EXEC
Command History
Release
12.1(13)EC
12.2(11)CY
12.2(11)BC2
12.2(15)CX
12.2(15)BC2
12.3(9a)BC
Usage Guidelines
The
error messages that the Cisco CMTS generates when it discovers a CM or CPE device using an
unauthorized IP address. Similarly, the cable logging layer2events command creates a buffer to contain
the system messages that are generated for DOCSIS-layer (Layer2) events. If the BADIPSOURCE or
DOCSIS-layer buffer becomes full, the oldest messages are deleted to make room for the newer
messages.
Use the show cable logging command to display the current contents of the BADIPSOURCE or
DOCSIS-layer buffer. After you have viewed all of the error messages in the current buffer, use the clear
cable logging command to clear out the buffer to make room for newer messages.
OL-1581-08
show cable logging [badipsource | layer2events | summary] [slot]
Displays the contents of the error log buffer containing the error messages
for bad IP source addresses.
Displays the contents of the message log buffer for DOCSIS-layer (Layer-2)
events.
Displays the status of the logging feature and its buffer.
(Optional) Displays the log for a particular cable interface on the
Cisco uBR7200 series router. The slot parameter can range from 3 to 6,
depending on the cable interface.
Note
Modification
This command was introduced for the Cisco uBR7100 series and
Cisco uBR7200 series universal broadband routers.
Support was added for the Cisco uBR10012 universal broadband router.
Support was added to the Release 12.2 BC train for the Cisco uBR7100
series, Cisco uBR7200 series, and Cisco uBR10012 routers.
Support was added to display the log buffer on an individual
Cisco uBR-MC28U/X cable interface line card on the Cisco uBR7200 series
router.
Support was added for the Cisco uBR-MC16U/X and Cisco uBR-MC5X20U
cable interface line cards.
The layer2events keyword was added.
cable logging badipsource
This option is supported only on the Cisco uBR-MC16U/X,
Cisco uBR-MC5X20U, and Cisco uBR-MC28U/X cable interface
line card.
command creates a circular buffer that contains the BADIPSOURCE
Cisco Broadband Cable Command Reference Guide
show cable logging
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