Cisco SR2016T-NA Reference Manual page 216

cable relay-agent-option
cable relay-agent-option
To enable the system to insert the CM MAC address into a Dynamic Host Configuration Protocol
(DHCP) packet received from a CM or host and forward the packet to a DHCP server, use the cable
relay-agent-option command in cable interface configuration mode. To disable MAC address insertion,
use the no form of this command.
Syntax Description This command has no keywords or arguments.
Defaults no cable relay-agent-option
Command Modes
Interface configuration (cable interface only)
Command History Release
11.3 NA
12.0 mainline,
12.1(2)EC1,
12.0(10) SC
Usage Guidelines
This functionality enables the use of DHCP Option 82 to allow a DHCP server to identify the CM
sending the request and to initiate the appropriate action based on this information. On Cisco IOS
Release 12.0 and later releases, use the
processing.
Examples
The following example shows how to enable the insertion of DHCP relay agent information into DHCP
packets:
router(config-if)# cable relay-agent-option
Related Commands Command
cable helper-address
cable dhcp-giaddr
cable source-verify
Cisco Broadband Cable Command Reference Guide
2-204
cable relay-agent-option
no cable relay-agent-option
Modification
This command was introduced.
This command was made obsolete and was replaced by the
information option command.
ip dhcp relay information option
Description
Specifies a destination IP address for User Datagram Protocol (UDP)
broadcast (DHCP) packets.
Modifies the GIADDR field of DHCPDISCOVER and
DHCPREQUEST packets with a Relay IP address before they are
forwarded to the DHCP server.
Turns on CM upstream verification.
Chapter 2 Cisco CMTS Configuration Commands
ip dhcp relay
command to enable Option 82
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