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Chapter
16
DHCP Relay Agent
16.1 Protocol Description
DHCP relay agent is used to forward the DHCP packets between client and
server when they are not in the same subnets. The relay receives packets
from the client and inserts certain information like the network in which the
packet is received and then forwards it to the server. The Server identifies
the client’s network from this information and allocates IP accordingly, then
sends the reply to the relay. The Relay then strips the information inserted
and broadcasts the packets into the client’s network.
server when they are not in the same subnets. The relay receives packets
from the client and inserts certain information like the network in which the
packet is received and then forwards it to the server. The Server identifies
the client’s network from this information and allocates IP accordingly, then
sends the reply to the relay. The Relay then strips the information inserted
and broadcasts the packets into the client’s network.