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Chapter 6
Cable CPE Commands
cable-modem dhcp-proxy
To specify that a Dynamic Host Configuration Protocol (DHCP) server should provide an IP address for
the router's Ethernet interface, for the loopback interface, or for the router's Network Address
Translation (NAT) address pool, use the cable-modem dhcp-proxy command in cable interface
configuration mode. To disable this feature so that you can then manually assign an IP address to the
Ethernet interface or NAT address pool, use the no form of this command.
Cisco uBR905, Cisco uBR924, Cisco uBR925 Cable Access Routers, and Cisco CVA122 Cable Voice Adapter
This command is available only when the router is configured for routing mode and cannot be used when
Note
the router is configured for DOCSIS-compliant bridging.
Syntax Description
interface ethernet
number
interface loopback
number
nat pool-name
Defaults
No default behavior or values
Command Modes
Interface configuration (cable interface only)
Command History
Release
12.1(1)T
12.1(3)XL
12.1(5)XU1
12.2(2)XA
12.2(8)YJ
12.2(15)T
OL-1581-07
cable-modem dhcp-proxy {interface ethernet number | interface loopback number |
nat pool-name}
no cable-modem dhcp-proxy {interface ethernet number | interface loopback number |
nat pool-name}
Identifies the Ethernet interface to be assigned the static IP address from the
DHCP server (always 0).
Identifies the loopback interface to be assigned the static IP address from
the DHCP server (always 0).
Specifies the name of the NAT pool to be created using the IP address and
subnet mask supplied by the DHCP server. (This option is equivalent to
giving the ip nat pool pool-name start-ip end-ip netmask subnet
command, using the IP address and subnet mask supplied by the DHCP
server.)
Modification
This command was introduced on the Cisco uBR924 cable access router.
Support was added for the Cisco uBR905 cable access router.
Support was added for the Cisco CVA122 Cable Voice Adapter.
Support was added for the Cisco uBR925 cable access router.
The loopback option was added to support automatic configuration of the
IP address on the cable modem tunnel interface for the Cisco uBR905 and
Cisco uBR925 cable access routers.
This command was integrated into Cisco IOS Release 12.2(15)T.
Cisco Broadband Cable Command Reference Guide
cable-modem dhcp-proxy
6-7
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