Which address enables the forwarding of DHCP messages if the DHCP client and DHCP server are not on the same subnet?

Last Updated: Jun 29, 2026
IT Exam Items Repository › Category: CCNP ENARSI v9 › Which address enables the forwarding of DHCP messages if the DHCP client and DHCP server are not on the same subnet?

Which address enables the forwarding of DHCP messages if the DHCP client and DHCP server are not on the same subnet?

  • MAC address
  • IP helper address
  • IPv6 address
  • Broadcast address

Explanation: Routers do not forward UDP broadcasts by default. If a DHCP client and server are on different subnets, a DHCP relay agent must be configured. This is done using the ip helper-address command on the router interface connected to the client, which allows the router to forward the broadcast discovery message as a unicast message to the server's IP address.

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