A network administrator configures a DHCP relay agent on a Layer 3 router interface to forward IP address requests from client hosts to a centralized DHCP server located on a remote subnet. Which TWO actions are performed by the DHCP relay agent during this process? (Select TWO).
- It converts incoming client Layer 2 DHCP broadcast packets into unicast IP packets destined for the central DHCP server IP address.Cevap
- It populates the Gateway IP Address (giaddr) field in the DHCP header with its own interface IP address.Cevap
- CIt converts the client request from UDP port 67 to TCP port 67 to establish a reliable connection across the router.
- DIt issues a temporary IP address lease locally from a router scope while waiting for the central DHCP server to respond.
Cevap
The DHCP relay agent converts local broadcast DHCP client messages into unicast IP packets targeted at the remote DHCP server, and populates the Gateway IP Address (giaddr) field in the DHCP packet header with its own interface IP address.
When client hosts generate broadcast DHCP requests, the relay agent on their local gateway interface captures the broadcast, places its own interface IP into the Gateway IP Address (giaddr) field, and forwards the request as a unicast packet to the configured DHCP server IP. These two functions ensure cross-subnet routing and correct scope selection.
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DHCP Relay Agent Broadcast-to-Unicast Forwarding and GIADDR Field Tagging
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