Hi, I am trying to configure 2 VLANS on my Cisco 871 router. VLAN 10 & VLAN 20.VLAN 10 is for my VoIP.VLAN 20 is for my Data. My physical connection is this: ISP > Cisco 871 > Unmanaged Switch > All DevicesSo I have My ISP connected to FastEthernet 4...