User guide

Dell PowerConnect 55xx Systems User Guide 561
Trusted Interfaces
Interfaces are untrusted if the packet is received from an interface outside the
network or from an interface beyond the network firewall. Trusted interfaces
receive packets only from within the network or the network firewall.
To configure an interface to be trusted:
1
Click Switching  Dynamic ARP Inspection  Trusted Interface in the
tree view to display the
Trusted Interface: Summary page.
Figure 18-5. Trusted Interface: Summary
The ports on the selected unit and their trusted status are displayed.
2 To modify the status of an interface, click Edit.
3 Select the interface and enable/disable its Trust Status , which is the
DHCP Snooping Trust mode.