IPSubnetting VLAN 
 
All contents copyright (c) 2007 ZyXEL Communications Corporation.   
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8. Create VLAN 3, include port 1 and port 2. Port 1 connects to the modem and 
packets going in and out this port shouldn’t have VLAN tag. Port 2 connects to the 
router in the CO, and packets going in and out port 2 should have different VLAN tags 
according to its IP address. Click “Add”.