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Choose the menu Routing→DHCP Relay→Global Config to load the following page.

Figure 10-19 Global Config

The following entries are displayed on this screen:



Option 82 configuration

Configure the Option 82 which cannot be assigned by the switch.

Option 82 Support: Enable or disable the Option 82 feature.

Existed Option 82

Field:

Select the operation for the existed Option 82 field of the

DHCP request packets from the Host.

 Keep: Indicates to keep the Option 82 field of the packets.



Replace: Indicates to replace the Option 82 field of the

packets with the switch defined one.



Drop: Indicates to discard the packets including the

Option 82 field.

Customization: Enable or disable the switch to define the Option 82 field.

Circuit ID: Enter the sub-

option Circuit ID for the customized Option 82

field.

Remote ID: Enter the sub-

option Remote ID for the customized Option 82

field.