How To Use Dhcp Relay On The Switch; Dhcp Relay Tutorial Introduction - ZyXEL Communications MES3500-24S User Manual

Click Save at the top right corner of the web configurator to save the
8
configuration permanently.
Connect your DHCP server to port 5 and a computer (as DHCP client) to either port 6 or 7. The computer
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should be able to get an IP address from the DHCP server. If you put the DHCP server on port 6 or 7, the
computer will not able to get an IP address.
10 To check if DHCP snooping works, go to Advanced Application > IP Source Guard, you should see an IP
assignment with the type dhcp-snooping as shown.
You can also telnet or log into the Switch's console. Use the command "show dhcp snooping
binding" to see the DHCP snooping binding table as shown next.
sysname# show dhcp snooping binding
MacAddress
-----------------
00:02:00:00:00:1c
Total number of bindings: 1

6.2 How to Use DHCP Relay on the Switch

This tutorial describes how to configure your Switch to forward DHCP client requests to a specific DHCP
server. The DHCP server can then assign a specific IP address based on the information in the DHCP
requests.

6.2.1 DHCP Relay Tutorial Introduction

In this example, you have configured your DHCP server (192.168.2.3) and want to have it assign a
specific IP address (say 172.16.1.18) and gateway information to DHCP client A based on the system
name, VLAN ID and port number in the DHCP request. Client A connects to the Switch's port 2 in VLAN
102.
Chapter 6 Tutorials
IpAddress
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10.10.1.16 6d23h59m20s
MES3500-24S/MGS3520 Series User's Guide
50
Lease Type VLAN
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dhcp-snooping
Port
-----
100 7