Dhcp Relay - TP-Link JetStream T2700G-28TQ User Manual

Step Operation
4 Configure the IP
address pool
5 Configure the
reserved
addresses
6 Manually binding
IP addresses
Configure Access Switch

Step Operation
1 Enable DHCP
Relay.
2 Configure
82 support.
3 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 on T2700G-28TQ

A typical application of T2700G-28TQ working at DHCP Relay function is shown below. It can be
altered to meet the network requirement.
Note
Required. On page Routing→DHCP Server→Pool Setting,
configure IP address pool parameters for each VLAN interface.
Take VLAN10 as an example, configure its Network Address as
192.168.10.0, Subnet Mask as 255.255.255.0, Default gateway as
192.168.10.1 (the IP address of the VLAN interface), DNS Server
as 160.20.30.2, and customize the Pool Name and Lease Time.
Required. On page Routing→DHCP Server→DHCP Server,
under the Excluded IP Address, configure reserved IP addresses
for the fixed computers in each VLAN.
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.
Option Optional. On the Routing→DHCP Relay→Global Config page,
configure the Option 82 parameters.
Required. On the Routing→DHCP Relay→DHCP Server page,
DHCP
specify the DHCP Server with the IP address of the central switch.
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