ZyXEL Communications XGS4700 Series, Руководство пользователя

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Chapter 6 Tutorials
XGS4700-48F User’s Guide
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Connect your DHCP server to port 5 and a computer (as DHCP client) to either
port 6 or 7. The computer 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.
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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.
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
sysname# show dhcp snooping binding
MacAddress IpAddress Lease Type VLAN Port
----------------- --------------- ------------ ------------- ---- -----
00:02:00:00:00:1c 10.10.1.16 6d23h59m20s dhcp-snooping 100 7
Total number of bindings: 1