Cisco Broadband Cable Command Reference Guide

cable helper-address
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Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
Examples The following example shows how to forward UDP broadcasts from both CMs and CPE devices to the
DHCP server at 172.23.66.44:
router(config-if)# cable helper-address 172.23.66.44
The following example shows how to forward UDP broadcasts from CMs and CPE devices to separate
DHCP servers:
router(config)# interface cable 6/0
router(config-if)# cable helper-address 172.23.66.143 host
router(config-if)# cable helper-address 172.23.66.144 cable-modem
Related Commands Command Description
cable dhcp-giaddr Modifies the GIADDR field of DHCPDISCOVER and
DHCPREQUEST packets with a Relay IP address before they are
forwarded to the DHCP server.
cable relay-agent-option Enables the system to insert the CM MAC address into a DHCP
packet received from a CM or host and forward the packet to a DHCP
server.
cable source-verify Turns on CM upstream verification.
cable telco-return spd Enforces the telco-return CM to use a specific Dynamic Host
dhcp-authenticate
Configuration Protocol (DHCP) server.
cable telco-return spd Identifies the IP address of the Dynamic Host Configuration Protocol
dhcp-server
(DHCP) server that the telco-return CM must access.
ip dhcp relay information Enables the system to insert the CM MAC address into a DHCP
option
packet received from a CM or host and forward the packet to a DHCP
server.
ip dhcp smart-relay Monitors client retransmissions when address pool depletion occurs.
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