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)

24.2Configuring 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).

 

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VES-1616F-3x Series User’s Guide