Chapter 6 Tutorials
GS2220 Series User’s Guide
87
Fig ure 64 Tutorial: Set the DHCP Server Port to Trusted
7 Go to Adva nc e d Applic a tio n > IP Sourc e G ua rd > IPv4 So urc e G ua rd Se tup > DHC P Sno o ping >
Config ure > VLAN, show VLAN 100 by entering 100 in the Sta rt VID and End VID fields and click Apply.
Then select Ye s in the Ena ble d field of the VLAN 100 entry shown at the bottom section of the screen.
If you want to add more information in the DHCP request packets such as source VLAN ID or system
name, you can also select an O ptio n82 Pro file in the entry.
Fig ure 65 Tutorial: Enable DHCP Snooping on this VLAN
8 Click Sa ve at the top right corner of the Web Configurator to save the configuration permanently.
9 Connect your DHCP server to port 4 and a computer (as DHCP client) to either port 5 or 6. The computer
should be able to get an IP address from the DHCP server. If you put the DHCP server on port 5 or 6, the
computer will NOT be able to get an IP address.
10 To check if DHCP snooping works, go to Adva nc e d Applic a tio n > IP So urc e Gua rd > IPv4 So urc e G ua rd
Se tup, you should see an IP assignment with the type DHC P- Sno o ping as shown.
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