ZyXEL Communications GS1920 User Handbook Manual page 87

1. Check the Active box and click the Apply to run the feature. Please kindly use
the HELP button for more specific information.
Figure 1, Advanced Application > IP Source Guard > Source Guard setup > ARP
Inspection > Configure
2. In this screen user can configure which device will be trust on this port. Ex:
based on the scenario, port 9 was been configured as trusted port so that
DHCP server can provide IP address to client within the whitelist-DHCP
snooping and Static binding tables
Figure 2, Advanced Application > IP Source Guard > Source Guard setup > ARP
Inspection > Configure > Port
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