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Cisco Broadband Access Center for Cable Installation Guide 2.7
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Chapter 4 Installing in a Lab Environment
Configuring Network Registrar and a CMTS
Step 3
To configure your CMTS to insert the DHCP relay agent information option in forwarded
BOOTREQUEST messages, use this Cisco IOS command:
ip dhcp relay information option
The default device detection logic in BACC uses DHCP option 82 information (relay-agent information)
to detect devices.
Step 4
To configure your CMTS so that it does
not
validate the relay agent information option in forwarded
BOOTREPLY messages, use this IOS command:
no ip dhcp relay information check