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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 5 Cisco CMTS Debugging Commands
debug cable mac-address
debug cable mac-address
To display debug information for a specific CM, use the
debug cable mac
command in privileged EXEC
mode. The
no
form of this command disables debugging output.
debug cable mac-address
address
[
address-mask
] [
verbose
]
no debug cable mac-address
address
[
address-mask
] [
verbose
]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
You can repeat this command for other MAC addresses. Each time you specify a different MAC address,
debugging is turned on for that particular MAC address.
If you enter two commands with the same MAC address, but with different values for the
mask
or
verbose
keywords, the router treats both commands as the same. In this case, the latest debugging
information supersedes the previous debugging information.
Note
Do not use this command if you have a large number of CMs on your network. The Cisco CMTS will
become flooded with console printouts.
Examples
The following example demonstrates how to enable debugging for all traffic coming from cable
interface 3/0 of CMs with the MAC address 00E0.1Exx.xxxx:
Router#
debug cable interface c3/0
Router#
debug cable mac-address 00E0.1E00.0000 ffff.ff00.0000
Router#
004042: Jul 2 08:47:13.656: Ranging Modem 00E0.1E23.4567, SID 73 on Interface Cable3/U0
004043: Jul 2 08:47:13.656: Ranging request from 00E0.1E23.4567, SID 73 [73] on Interface
Cable3/U0
004044: Jul 2 08:47:13.656: Timing error 0, power error 0.25dB, freq error 4 (adjust 0)
004045: Jul 2 08:47:13.656: Ranging successful
Tip
To monitor a specific CM when it comes online, use the
debug cable mac-address
,
debug cable
mac-protocol
, and
debug cable registration
commands.
address
Specifies the particular MAC address to debug.
address-mask
Specifies an address mask to indicate a range of addresses to debug. This
mask is bit-ANDed with the given address, and debug messages are
displayed for any CM that matches the resulting non-zero bits.
verbose
Specifies detailed output for the particular MAC address.
Release
Modification
12.1 T
This command was introduced.