DHCP, DNS and Time
Dlink DRO-220i User Guide
27
MAC Address
Enter the MAC Address of the system.
IP Address
Enter the IP address to be assigned to the system with the above MAC
Address.
After entering all the information press the
Apply
button. The entries will now be
displayed under the
DHCP Static Mapping Client Table
.
If the Static IP in the DHCP Reservation entry does not fall within the DHCP Server IP
Range, then it will be treated as an invalid entry. These invalid entries will be displayed
in
dark grey
color in the
DHCP Static Mapping Client Table.
3.1.3 DHCP Relay
In DHCP implementations, the DHCP clients send requests to locate the DHCP server by
broadcast messages. Since broadcast messages are normally limited to the local network,
the DHCP server and client always need to be in the same physical network. In large
networks, a server needs to exist on every LAN, which is not economical or easy to
maintain. DHCP relay solves this problem.
A DHCP relay acts as an intermediary between the client in the local network and the
remote DHCP server. It intercepts requests from clients and relays them to the server.
The server then responds back to the relay, which then forwards the response back to the
client.
This relay-agent functionality is most conveniently located in the router which
interconnects the clients and servers, but may alternatively be located in a host which is
directly connected to the client subnet.
L
Caution:
Both DHCP Server and DHCP Relay cannot be enabled in the router
simultaneously. When DHCP Relay is enabled, the Server will be disabled
automatically. And when DHCP Server is enabled, the Relay will be disabled.
Select
Misc
→
DHCP
→
DHCP Relay
to configure
DHCP Relay
as explained below.
DHCP Relay
Relay-Status
Select Enable or Disable to activate or deactivate the DHCP Relay.
DHCP Server IP
Enter the IP address of the DHCP Server from which LAN clients will get
their IP address.
Web UI
