3-10DHCP Relay Agent Configuration ExampleNetwork requirementsVLAN-interface 1 on the DHCP relay agent (Switch A) connects to the network where DHCP clientsreside. The IP address of VLAN-interface 1 is 10.10.1.1/24 and IP address of VLAN-interface 2 is10.1.1.2/24 that communicates with the DHCP server 10.1.1.1/24. As shown in the figure below, SwitchA forwards messages between DHCP clients and the DHCP server to assign IP addresses in subnet10.10.1.0/24 to the clients.Network diagramFigure 3-4 Network diagram for DHCP relay agentConfiguration procedure# Create DHCP server group 1 and configure an IP address of 10.1.1.1 for it. system-view[SwitchA] dhcp-server 1 ip 10.1.1.1# Map VLAN-interface 1 to DHCP server group 1.[SwitchA] interface Vlan-interface 1[SwitchA-Vlan-interface1] dhcp-server 1z You need to perform corresponding configurations on the DHCP server to enable the DHCP clientsto obtain IP addresses from the DHCP server. The DHCP server configurations vary with differentDHCP server devices, so the configurations are omitted.z The DHCP relay agent and DHCP server must be reachable to each other.Troubleshooting DHCP Relay Agent ConfigurationSymptomA client fails to obtain configuration information through a DHCP relay agent.
