User manual

Network Setup

Typically, a tagged VLAN interface is used when you want to join an existing VLAN on

the network, and an untagged VLAN interface is used when you are using the port based

VLAN feature to isolate the ports so that you can configure each of them individually.

Limitations of port based VLANs

There are few further limitations to keep in mind when using port based VLANs:

•

The total bandwidth from the switch into the CPU is 100Mbits/s, which is shared

between the 4 ports. This may limit the bandwidth available to a single port when

perform general routing, packet filtering and other activities.

•

Port based VLANs can only be enabled if there are less than 16 total VLANs.

•

Switch A can only have one default VLAN, and any ports that are not explicity

assigned to another VLAN are automatically placed on the default VLAN. The

default VLAN is untagged.

•

You cannot add tagged VLANs to port A1; it is a member of the default VLAN only.

Enabling port based VLANs

Note

If you previously selected 1 LAN Port, 3 Isolated Ports in the Switch Configuration

step of the Quick Setup Wizard, port based VLANs are already enabled.

Select Network Setup from the Networking menu. Next to the port based VLAN

capable interface (Switch A on the SG560, SG565 and SG580), click the Edit icon then

the Ethernet Configuration tab.