Dhcp Relay - TP-Link T2600G-28TS User Manual

Step Operation
6 Manually binding
IP addresses
Configure Access Switch

Step Operation
Enable DHCP
•
Relay.
Configure Option
•
82 support.
Configure
•
Server.

10.5 DHCP Relay

Application Environment of DHCP Relay

In DHCP model, DHCP clients broadcast its DHCP request, so the DHCP sever and clients must
be on the same subnet, which require the DHCP server is available in every subnet. It is costly to
build so much DHCP Server. DHCP relay agent solves the problem. Via a relay agent, DHCP
clients request an IP address from the DHCP server in another subnet, and DHCP clients in
different subnets can share the same DHCP server in the internet.
Details of DHCP Relay

A typical application of the switch working at DHCP Relay function is shown below. It can be
altered to meet the network requirement.
Note
Optional. On page Routing→ DHCP Server→Manual Binding,
bind specified ip addresses to the specific clients.
Note
Required. On the Routing→DHCP Server→Global Config page,
enable the DHCP Server function, and the DHCP Relay function
will be enabled at the same time.
Optional. On the Routing→DHCP Relay→Global Config page,
configure the Option 82 parameters.
DHCP Required. On the Routing→DHCP Relay→DHCP Server page,
specify the DHCP Server with the IP address of the central switch.
Figure 10-21 DHCP Relay Application
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