Users Guide

Figure 210 - Distributed L3 DHCP Configuration
Centralized L2 DHCP Configuration
In Centralized L2 mode, both the DHCP server and default gateway are in the data center, on the
other side of the VPN tunnel.
1. Click New in the DHCP Server window and select Centralized, L2 to configure the following
parameters for the Distributed L3 mode DHCP pool:
n Name — Name of the subnet (must be unique).
n Type— Indicates the type of DHCP server. Available options are Local, Distributed L3,
Distributed L2, Centralized L2. Centralized, L2 implies that this is a Centralized mode L2
DHCP subnet.
n VLAN— VLAN ID of the subnet. This needs to be referenced in the SSID configuration
to make use of this subnet.
n DHCP Relay Agent and Option 82— Select to enable or disable these features.
When a DHCP server is configured with a DHCP Relay agent, the client's Broadcast DHCP
Discover packet is not sent to the corporate network, instead the Virtual Controller acts as
the DHCP Relay and unicasts DHCP packets to the corporate DHCP server. Enable DHCP
Option 82 to allow clients to send DHCP packets with the Option 82 string.
The Option 82 string is available only in the Alcatel (ALU) format. The ALU format for the
Option 82 string consists of the following:
n Remote Circuit ID¡ X AP-MAC; SSID; SSID-Type
n Remote Agent¡ X IDUE-MAC
NOTE: The Option 82 is specific to Alcatel and is not configurable in this version of W-
Instant.
The following table describes the behavior of DHCP Relay Agent and Option 82 in the W-IAP.
Dell PowerConnect W-Series Instant Access Point 6.2.0.0-3.2.0.0 | User Guide 267 | VPN Configuration