Step Operation
Note
5
Configure the
reserved
addresses
Required. On page
Routing
→DHCP Server→
DHCP Server
, under
the Excluded IP Address, configure reserved IP addresses for the
fixed computers in each VLAN.
Configure Access Switch
Step Operation
Note
1
Enable DHCP
Relay.
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.
2
Configure Option
82 support.
Optional. On the
Routing→DHCP Relay→Global Config
page,
configure the Option 82 parameters.
3
Configure DHCP
Server.
Required. On the
Ro
uting→DHCP Relay→DHCP Server
page,
specify the DHCP Server with the IP address of the central switch.
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 T3700G-52TQ
A typical application of T3700G-52TQ working at DHCP Relay function is shown below. It can
be altered to meet the network requirement.
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