A network host on VLAN 10 needs an IP address from a centralized DHCP server located across a routed network on VLAN 100. Place the steps of the initial DHCP discovery and offer process in the correct order from first to last.
- 1The host broadcasts a DHCPDISCOVER packet on its local VLAN 10 subnet using UDP port 67.
- 2The local router's relay agent receives the broadcast, populates the GIADDR field with its local SVI IP address, and unicasts the packet to the DHCP server.
- 3The remote DHCP server receives the unicast message, uses the GIADDR field to select the proper IP pool, and sends a unicast DHCPOFFER back to the relay agent.
- 4The relay agent receives the DHCPOFFER and forwards it onto the client's local subnet as a broadcast or unicast frame.
Cevap
The correct sequence starts with the host broadcasting a DHCPDISCOVER packet on its local subnet, followed by the local relay agent populating the GIADDR header and forwarding a unicast packet to the central server, then the DHCP server replying with a unicast DHCPOFFER using the GIADDR to choose the pool, and finally the relay agent delivering the DHCPOFFER to the local host.
The correct sequence reflects standard DHCP relay behavior across subnets: a local client broadcast is captured by the relay agent, converted to a unicast packet containing the GIADDR, processed by the central DHCP server, sent back to the relay agent as a unicast DHCPOFFER, and lastly delivered back to the client host.
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Anahtar Kavram
DHCP Relay Operation and Packet Transformation Sequence