User manual

Chapter 6 Tutorials
GS2210 Series User’s Guide
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6 The DHCP Snooping Port Configure screen appears. Select Trusted in the Server Trusted state field for port
5 because the DHCP server is connected to port 5. Keep ports 6 and 7 Untrusted because they are
connected to DHCP clients. Click Apply.
Figure 39 Tutorial: Set the DHCP Server Port to Trusted
7 Go to Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping >
Configure > VLAN, show VLAN 100 by entering 100 in the Start VID and End VID fields and click Apply.
Then select Yes in the Enabled 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 Option82 Profile in the entry. See Section 26.19.1.3 on page 253.
Figure 40 Tutorial: Enable DHCP Snooping on this VLAN
8 Click Save at the top right corner of the web configurator to save
the configuration permanently.
9 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.