User’s Manual of WGS Managed Series
4.9.7.4 Port Setting
Configures switch ports as trusted or untrusted.
Command Usage
A trusted interface is an interface that is configured to receive only messages from within the network. An untrusted interface
is an interface that is configured to receive messages from outside the network or firewall.
When DHCP snooping enabled both globally and on a VLAN, DHCP packet filtering will be performed on any untrusted ports
within the VLAN.
When an untrusted port is changed to a trusted port, all the dynamic DHCP snooping bindings associated with this port are
removed.
Set all ports connected to DHCP servers within the local network or firewall to trusted state. Set all other ports outside the
local network or firewall to untrusted state.
The DHCP Snooping Port Setting screen in Figure 4-9-36 & Figure 4-9-37 appears.
Figure 4-9-36 DHCP Snooping Port Setting Page Screenshot
The page includes the following fields:
Object Description
• Port
Select port from this drop-down list
• Type
Indicates the DHCP snooping port mode. Possible port modes are:
Trusted: Configures the port as trusted sources of the DHCP message.
Untrusted: Configures the port as untrusted sources of the DHCP
message.
• Chaddr Check
Indicates that the Chaddr check function is enabled on selected port.
Chaddr: Client hardware address.
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