Dhcp; Chapter 34 Dhcp; Dhcp Overview; Dhcp Configuration Options - ZyXEL Communications XS-3900-48F User Manual

This chapter shows you how to configure the DHCP feature.

34.1 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. When 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 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.

34.1.1 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.

34.2 DHCP Status

Click IP Application > DHCP in the navigation panel. The DHCP Status screen displays.
Figure 153 IP Application > DHCP Status
The following table describes the labels in this screen.
Table 121 IP Application > DHCP Status
LABEL
Relay Status
Relay Mode
XS3900-48F User's Guide
C
DESCRIPTION
This section displays configuration settings related to the Switch's DHCP relay mode.
This field displays:
• None - if the Switch is not configured as a DHCP relay agent.
• Global - if the Switch is configured as a DHCP relay agent only.
• VLAN - followed by a VLAN ID or multiple VLAN IDs if it is configured as a relay agent
for specific VLAN(s).
HAPTER
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DHCP

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