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This chapter shows you how to configure the DHCP feature.
35.1 DHCP Overview
DHCP (Dynamic Host Configuration Protocol RFC 2131 and RFC 2132) allows individual computers
to obtain TCP/IP configuration at start-up from a server. You can configure the Switch as a DHCP
relay agent. If you configure the Switch as a relay agent, then the Switch forwards DHCP requests
to DHCP server on your network. If you don't configure the Switch as a DHCP relay agent then you
must have a DHCP server in the broadcast domain of the client computers or else the client
computers must be configured manually.
35.1.1 DHCP Modes
If there is already a DHCP server on your network, then you can configure the Switch as a DHCP
relay agent. When the Switch receives a request from a computer on your network, it contacts the
DHCP server for the necessary IP information, and then relays the assigned information back to the
computer.
35.1.2 DHCP Configuration Options
The DHCP configuration on the Switch is divided into Global and VLAN screens. The screen you
should use for configuration depends on the DHCP services you want to offer the DHCP clients on
your network. Choose the configuration screen based on the following criteria:
• Global: The Switch forwards all DHCP requests to the same DHCP server.
• VLAN: The Switch is configured on a VLAN by VLAN basis. The Switch can be configured to relay
DHCP requests to different DHCP servers for clients in different VLAN.
35.2 DHCP Status
Click IP Application > DHCP in the navigation panel. The DHCP Status screen displays.
Figure 193 IP Application > DHCP > DHCP Status
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