Instruction Manual
101
Port Setting
Allows you to configure whether a port is trusted or untrusted.
Command Usage
•
A trusted port is a port that is configured to receive messages only from within
the network.
•
An untrusted port is a port that is configured to receive messages from outside
the network or firewall.
•
When DHCP snooping is 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 the port will be removed.
Applying DHCP Snooping Port Settings
1.
On the
DHCP Snooping Port Setting
page, select a
Port
From the drop-down
list.
2.
Select a DHCP Snooping port
Type
radio button:
•
Trusted:
Receives messages from within the network.
•
Untrusted:
Receives messages from outside the network or firewall.
3.
Select whether to Enable or Disable
Chaddr Check,
Client Hardware Address
(CHADDR) Checking on the selected port.
4.
Click the
Apply
button to apply the DHCP Spooning Port settings.
Viewing DHCP Snooping Port Settings
•
On the
DHCP Snooping Port Settings
page, the following information will be
displayed:
•
Port:
Displays the port number the DHCP Snooping settings are applied to.
•
Type:
Displays the port status type (trusted or untrusted)
•
Chaddr Check:
Displays whether CHADDR checking is enabled or disabled
on the corresponding port.
