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Chapter 2
Cisco CMTS Configuration Commands
Defaults
The Subscriber Management MIB defaults to the following default values:
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Command Modes
Global configuration
Command History
Release
12.1(7)CX1
12.3(9a)BC
Usage Guidelines
This command enables field technicians to add a temporary CPE device behind the subscriber's cable
modem. The temporary CPE device shares the same SID settings as the original CPE device, even though
the temporary CPE device has a different MAC address. The original CPE device automatically changes
from dhcp cpe to static cpe in the CMTS host routing tables, and the CPE device continues to receive
service with the same SID.
To disable Cisco CMTS Static CPE Override on the Cisco CMTS, use the no form of this command. This
automatically updates the routing tables and enables the MAC address from the technician's laptop for
a future field service connection at a different location.Prior to using this command, the first (existing)
DHCP CPE device maintains its DHCP dynamic MAC address behind the cable modem. The SID is
assigned to this IP address.
However, by enabling Static CPE override, you gain the following states and options on two CPE devices
behind the cable modem.
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Note
The second CPE device changes from dhcp cpe to static CPE in the CMTS host tables.
The DOCSIS 1.1 Subscriber Management MIB (DOCS-SUBMGT-MIB) creates and maintains a number
of tables that describe the state of subscriber management for the CMs and CPE devices being serviced
by the Cisco CMTS. The CMTS creates rows in these tables for each CM and CPE device when the CM
registers with the CMTS, and if the CM does not specify a value for an attribute in this table, the CMTS
uses the defaults specified by the cable submgmt default command.
OL-1581-08
The active parameter defaults to FALSE (the CMTS does not actively manage CPE devices).
The learnable parameter defaults to TRUE (the CMTS learns the IP addresses for CPE devices).
The max-cpe parameter defaults to 16 IP addresses.
The filter group ID for each type of filter group defaults to 0, which means that no filtering is done
on that type of traffic.
Modification
This command was introduced.
Published related feature module, available as follows:
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The SID definition on the first CPE device is assigned a different static IP address. This enables you
to change the existing (dynamic) DHCP IP address to a static IP address without first clearing the
DHCP CPE host entries from the Cisco CMTS. The CPE IP state changes from dhcp to static cpe.
This static override allows a second CPE device with a second MAC address behind the same cable
modem with SID1 to be assigned same IP address as the first CPE device.
Cisco CMTS Static CPE Override
http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_troubles
hooting_guide09186a0080284e08.html
Cisco Broadband Cable Command Reference Guide
cable submgmt default
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