ZyXEL Communications VDSL SWITCH VES-1616F-3X - Manual (Page 165)

VES-1616F-3x Series User’s Guide
165
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H A P T E R
24
DHCP Relay
This chapter shows you how to configure the DHCP feature.
24.1 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 to relay client DHCP requests to a DHCP server and the server’s responses back to the
clients.
24.1.1 DHCP Relay Agent Information
The switch can add information to client DHCP requests that it relays to a DHCP server. This
helps provide authentication about the source of the requests. You can also specify additional
information for the switch to add to the client DHCP requests that it relays to the DHCP
server. Please refer to RFC 3046 for more details.
The DHCP relay agent information feature adds an Agent Information field to the option 82
field of the DHCP headers of client DHCP request frames that the switch relays to a DHCP
server. The following lists the DHCP relay agent option 82 information that the switch sends
to the DHCP server:
• Slot ID (1 byte)
• Port ID (1 byte)
• VLAN ID (2 bytes)
• System name (up to 32 bytes, this is optional)
24.2 Configuring DHCP Relay
Click Routing Protocol > DHCP Relay in the navigation panel. Use this screen to enable
DHCP relay on the switch and specify the IP address(es) of the DHCP server(s).