Revision 2010-11-15
Page 10 of 33
Setting up a
Static Range
Using a static IP address enables the DHCP Server to assign a DHCP Client the same IP
address each time the device is connected to a designated port on a Relay Agent.
Basic configuration using Option 82 Relay Agent
The setup for this method is a 2 step process and will be described below.
The first step is to setup the Relay Agent. See
Setup Option 82: DHCP Server Switch
.
The second step is to setup the DHCP Server. See
Setup Option 82: DHCP Server Switch
.
Topology:
TX1
192.168.2.100
Example :
A connection is made from the Client to a designated port (TX1) on the Relay
Agent.
In this example:
Make configuration on the Relay Agent. See Figure: Option82_1
The Relay Agent has been enabled.
The address of the DHCP server has been specified in the DHCP
Server 1 IP
as
192.168.2.213.
The Remote ID selected is the IP address of the Relay Agent.
The Relay Status has been enabled. This specifies that the relay agent should send a
request for an IP on behalf of the Client when the Client is connected to port TX1 and
that the VLAN the request will be using is 1.
The default string information provided in the field
Other Data
will be used (TX1-0001).
Configuration on the Server side should match the configuration on the Relay Agent: See
Figure: Option82_2
The Remote ID’s and Circuit ID’s are the same for the Port selected.
When a request for an IP arrives to the DHCP Server from the Relay Agent, the DHCP
Server will compare the Remote and Circuit ID’s and if they match, an IP will be offered.
In this case the Client will receive the IP address 192.168.2.100.
