Access Control List Screens; Dhcp Relay Overview; Dhcp Relay Agent Information; Dhcp Relay Screen - ZyXEL Communications MSC1000G User Manual

Access Control List Screens

This chapter describes the ACL (Access Control List) screens.

5.1 DHCP Relay Overview

DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual
clients to obtain TCP/IP configuration at start-up from a DHCP server. You can configure the
system to relay client TCP/IP configuration requests to a DHCP server and the server's
responses back to the clients.
You can configure the system to forward client DHCP requests from different VLANs to
specific DHCP servers.

5.1.1 DHCP Relay Agent Information

The system can add information to 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 system to add to the 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 headers in the 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)
• Information that you specify (up to 23 ASCII characters)

5.2 DHCP Relay Screen

Click ACL > DHCP Relay to display the screen shown next.
Chapter 5 Access Control List Screens
MSC1000G User's Guide
C
H A P T E R
5
73