Operation Manual – DHCPH3C S5500-EI Series Ethernet Switches Chapter 3 DHCP Relay Agent Configuration3-3If the DHCP relay agent supports Option 82, it will handle a client’s request according tothe contents defined in Option 82, if any. The handling strategies are described in thetable below.If a reply returned by the DHCP server contains Option 82, the DHCP relay agent willremove the Option 82 before forwarding the reply to the client.If a client’srequestingmessage has…HandlingstrategyPaddingformat The DHCP relay agent will…Drop Random Drop the message.Keep Random Forward the message withoutchanging Option 82.normalForward the message after replacingthe original Option 82 with the Option82 padded in normal format.Option 82ReplaceverboseForward the message after replacingthe original Option 82 with the Option82 padded in verbose format.— normal Forward the message after adding theOption 82 padded in normal format.no Option 82— verbose Forward the message after adding theOption 82 padded in verbose format.3.2 Configuration Task ListComplete the following tasks to configure the DHCP relay agent:Task RemarksEnabling DHCP RequiredEnabling the DHCP Relay Agent on an Interface RequiredCorrelating a DHCP Server Group with a Relay Agent Interface RequiredConfiguring the DHCP Relay Agent to Send a DHCP-ReleaseRequest OptionalConfiguring the DHCP Relay Agent Security Functions OptionalConfiguring the DHCP Relay Agent to Support Option 82 Optional3.3 Configuring the DHCP Relay Agent3.3.1 Enabling DHCPEnable DHCP before performing other DHCP-related configurations.
