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DES-7200 Configuration Guide Chapter 5 DHCP Relay Configuration
5-3
MAC address. Depicted below are the contents in the option, format, and typical
application schemes when the two schemes are used:
1. relay agent information option dot1x: This application scheme requires
802.1x authentication. The device ‘s IP privilege combiens with the ID of VLAN
to which the DHCP client belongs to form the Circuit ID sub-option. When
DHCP relay is uploaded to the DHCP server, combined with the configuration of
the DHCP server, the DHCP relay agent can assign IP addresses with different
privileges to the users with different privileges. The Circuit ID is in the following
format, where the privilege and vid fields respectively have two bytes:
2. relay agent information option82: This option can be used without running
other protocol modules. During DHCP relay, the device forms option82
information according to the port that receives the DHCP request message and
the physical IP address of the device itself, and uploads the option82 information
to the DHCP server. The option is in the following format:
Agent Circuit ID
Agent Remote ID