Manual

194
XMS-1024P
a: 14203 Minuteman Drive, Suite 201, Draper, UT 84020-1685 | luxul.com | 801-822-5450
LUX-UG-XMS-1024P Vers: 081314
Most Clients obtain their IP Addresses Dynamically which is illustrated in the
following fi gure.
Figure 12-6 Interaction between a DHCP client and a DHCP Server
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DHCP-DISCOVER Stage: The Client broadcasts the DHCP-DISCOVER packet to fi nd
the DHCP Server.
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DHCP-OFFER Stage: Upon receiving the DHCP-DISCOVER packet, the DHCP Server
selects an IP Address from the DHCP Pool and replies to the Client with DHCP-OFFER
packet carrying the IP Address and other information.
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DHCP-REQUEST Stage: If in the situation that there are multiple DHCP Servers send-
ing DHCP-OFFER packets, the Client will only respond to the fi rst OFFER
packet received. Once the DHCP-OFFER packet is received, the client will broadcast
the DHCP-REQUEST packet which includes the assigned IP Address of the DHCP-
OFFER packet.
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DHCP-ACK Stage: Since the DHCP-REQUEST packet is broadcast, all DHCP Servers on
the Network segment will receive it. However only the requested Server processes
the request. If the DHCP Server acknowledges assigning this IP Address to the Client,
it will send the DHCP-ACK packet back to the Client. If the DHCP Server does not
acknowledge assigning this IP Address, the Server will send the DHCP-NAK packet
and refuse assigning this IP Address to the Client.