DHCP and the Extreme Networks ExtremeWireless Software Solution

The Extreme Networks ExtremeWireless supports the following DHCP (Dynamic Host Configuration Protocol) configurations per topology:

• Controller is the DHCP server and available for routed topologies. For more information, see “DHCP Service Configuration” on page 3-1.
• Controller is a DHCP relay agent and available for routed topologies.
• Controller is neither a DHCP server or relay agent and available for Bridged@AP topologies. DHCP for traffic bridged locally at the Wireless AP is performed by a local DHCP server on the network and does not go through a controller at all.

For more information, see the User Guide.

Note

All three DHCP configurations are available for Bridged@Controller topologies. For Bridged@Controller topologies, the controller may be configured as the DHCP server for the corresponding VLAN (Virtual LAN). In this configuration, the controller bridges all the received traffic from a connected mobile user to the corresponding VLAN. The VLAN IP assignment must already have been configured for DHCP service. The wireless user joins that VLAN as a normal wired user. The address for the user is provided by the corresponding server. The controller learns the assigned IP address from a user based on IP inspection.