WESM zl Management and Configuration Guide WT.01.28 and greater

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IP Services—IP Settings, DHCP, and DNS
DHCP Server
Configuring DHCP Relay
Your network might already include a DHCP server. The Wireless Edge Services zl
Module can provide DHCP relay services to this server. A DHCP server serves only
clients on the same subnetwork or VLAN. DHCP relay passes DHCP requests from
clients on one subnetwork to a DHCP server on a different subnetwork, eliminating
the need for a DHCP server on each local network segment.
To provide DHCP relay services, a VLAN interface must have a static IP address.
(The DHCP client is disabled on the VLAN interface.)
Note Enabling DHCP relay on an interface overrides the DHCP server. That is, the server
will not respond to requests on that interface even if you have configured a pool for it.
Note The gateway interface is the interface through which the Wireless Edge Services zl
Module reaches the external DHCP server. Like the interface that relays the DHCP
requests, the gateway interface cannot run either the DHCP server or the DHCP client.
(That is, the interface requires a static address.)
To configure DHCP relay on the Wireless Edge Services zl Module, complete these
steps:
1. Select Network Setup > DHCP Server and click the Relay tab.