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Cisco Broadband Cable Command Reference Guide
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Chapter 2 Cisco CMTS Configuration Commands
clear cable host
clear cable host
To clear the host from the router’s internal address tables, use the
clear cable host
command in
privileged EXEC mode.
clear cable host
{
ip-address
|
mac-address
}
Syntax Description
Defaults
No default behavior or values
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command removes a host’s IP and MAC addresses from the router’s internal address tables. This
might be necessary to allow a new host to come online from the previous host’s CM.
Note
If the cleared host continues communicating through the CM, the Cisco CMTS adds the host back to its
internal address tables, and the
show interface cable
interface
modem
command shows it as having a
“static” address. To block the host from any further access, use the
cable source-verify dhcp
command,
so that the host cannot access the network unless it obtains an IP address from an authorized DHCP
server.
Examples
The following example shows how to remove a PC's MAC address from the router's internal address
tables on the Cisco CMTS:
Router#
clear cable host 0050.7366.17ab
Router#
Related Commands
ip-address
IP address for the device to be cleared.
mac-address
MAC address for the device to be cleared.
Release
Modification
11.3 NA
This command was introduced for the Cisco uBR7200 series universal
broadband router.
12.1(5)EC1
Support was added for the Cisco uBR7100 series universal broadband router.
12.2(4)BC1
Support was added for the Cisco uBR10012 universal broadband router.
Command
Description
cable device
Configures the access list for a CM device or host.
cable host access-
group
Configures the access list for the specified hosts.