This document describes the DHCP Option 82 Support for Routed Bridge Encapsulation features.
The DHCP relay agent information option (option 82) enables a Dynamic Host Configuration Protocol
(DHCP) relay agent to include information about itself when forwarding client-originated DHCP
packets to a DHCP server. The DHCP server can use this information to implement IP address or other
The DHCP Option 82 Support for Routed Bridge Encapsulation feature provides support for the DHCP
relay agent information option when ATM routed bridge encapsulation (RBE) is used. Figure 1 shows a
typical network topology in which ATM RBE and DHCP are used. The aggregation router that is using
ATM RBE is also serving as the DHCP relay agent.
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